tellor.io

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# tellor

Your Decentralized Oracle

## Sitemaps

- [XML Sitemap](https://tellor.io/sitemap.xml): Contains all public & indexable URLs for this website.

## Posts

- [Reflections on the First Half of 2023: Progress and Developments](https://tellor.io/blog/reflections-on-the-first-half-of-2023-progress-and-developments/) - As we hit the mid-point of 2023, we find ourselves reflecting on what we’ve done and where we are. Those who have been keeping up with our weekly dev calls are well aware of our efforts. To offer a more consolidated overview, we're taking a step back to write about our 2023 endeavors into a
- [Introducing the Tellor Operator Dashboard](https://tellor.io/blog/introducing-the-tellor-operator-dashboard/) - Tellor's security depends on a network of committed participants (validators, reporters, delegators, selectors, and security providers) who lock TRB into the system and assume real operational responsibilities. That commitment deserves full transparency so we built operator.tellor.io. With it every participant, current or prospective, can closely approximate their role costs, what it earns, and
- [Tellor Pull: A New Way To Use Tellor](https://tellor.io/blog/tellor-pull-a-new-way-to-use-tellor/) - Tellor Pull: A New Way To Use Tellor Tellor's newest evolution (Tellor Layer) has afforded the core team the flexibility to build new ways users can integrate Tellor. While the traditional push implementation is still the default use-case, Tellor Pull introduces an added layer of efficiency, allowing the value your protocol cares about to
- [Tellor Rewards Have Fully Transitioned to Tellor Layer — Here's What That Means](https://tellor.io/blog/tellor-rewards-have-fully-transitioned/) - Tellor has reached a pivotal milestone: reporter rewards have fully transitioned to Tellor Layer. If you're a reporter still operating on legacy Tellor (Tellor 360) on Ethereum, this is your signal to migrate. From this point on, Tellor Layer will be referred to as simply, Tellor. We know this is an adjustment but moving forward
- [The Comprehensive Guide to the Challenge of Price Feeds](https://tellor.io/blog/the-comprehensive-guide-to-the-challenge-of-price-feeds/) - Price feeds are simply an up-to-date stream of just how much an asset is worth. Defi needs them to price collateral and settle derivative markets, but the challenge of properly pricing assets extends deep into traditional financial markets. It sounds super simple, but between choosing price sources, aggregating them, and differences in outlier handling, they're
- [Upgrade Mainnet v6.1.5](https://tellor.io/blog/upgrade-mainnet-v6-1-5/) - We will be upgrading Tellor Mainnet around 10:45AM EST on Tuesday, April 14th! If you have questions feel free to ping us on the ⁠#developers channel in our discord! Updates include: Remove no stake report Prevent reporter self switching Refined pruning Upgrade Tag: v6.1.5 Upgrade Height: 17,003,500 Thank you for building with Tellor!
- [Tellor Mainnet Upgrade v6.1.4](https://tellor.io/blog/mainnet-update-v6_1_4/) - We will be upgrading Tellor Mainnet around 12:03 PM EST on Monday, April 13th! This is the TRBBridgeV2 update for Tellor Mainnet. Tellor bridge V2 adds security hardening features and improvements designed to enhance long-term security, flexibility, and upgrade resilience. The upgrade enables a smooth transition from the existing TokenBridge to TokenBridge V2 while preserving
- [Tellor Testnet Upgrade v6.1.4](https://tellor.io/blog/tellor-testnet-upgrade-v6-1-4/) - We will be upgrading Tellor Palmito Testnet on Monday, March 23rd at approximately 11:30am EST! The upgrade introduces TokenBridge V2 and a set of Tellor Layer improvements designed to enhance long-term security, flexibility, and upgrade resilience. The upgrade enables a smooth transition from the existing TokenBridge to TokenBridge V2 while preserving all bridged TRB and
- [Upgrade Testnet Tag: v6.1.3](https://tellor.io/blog/testnet-update-v6_1_3/) - We will be upgrading Tellor Palmito Testnet around 1:00 PM EST on Thursday, February 26th! If you have questions feel free to ping us on the ⁠#developers channel in our discord! Updates include: updated install script added tests & security parameters more strict vote extensions upgrade handler for v6.1.3 Upgrade Tag:v6.1.3 Upgrade Height: 17415040 Thank
- [Upgrade Testnet Tag: v6.1.2](https://tellor.io/blog/testnet-update-v6_1_2/) - We will be upgrading Tellor Palmito Testnet around 9:00 AM EST on Monday, February 16th! If you have questions feel free to ping us on the ⁠#developers channel in our discord! Updates include: Update resync-prune-node.sh Update install_layer.sh Optimize and reduce storage and some iterations Upgrade Tag:v6.1.2 Upgrade Height: 16864110 Thank you for building with Tellor!
- [Using Tellor: Integration Workflow](https://tellor.io/blog/using-tellor-integration-workflow/) - Integrating oracle data securely into your application is critical. Tellor, an L1 oracle chain, enables developers on any chain to access subjective data through robust verification mechanisms. This article provides a technical overview to help developers understand the necessary integration steps, verification checks, and specific considerations for common oracle use cases. Tellor Integration Workflow
- [Upgrade Mainnet Tag: v6.1.1](https://tellor.io/blog/mainnet-update-v6_1_1/) - We will be upgrading Tellor Mainnet on Thursday, Jan 29th! This upgrade increases validation to reported data before saving to state and enhances encoding/decoding error handling. Notable changes with this release: Move daemons package to a separate repository Change: store snapshot only if delegation state changed Update/available tips query Fix when decoding strings using hex.DecodeString
- [Upgrade Testnet Tag: v6.1.0](https://tellor.io/blog/testnet-update-v6_1_0/) - We will be upgrading Tellor Palmito Testnet around 9:00 AM EST on Friday, Jan 9th! This upgrade significantly refines how time-based inflationary rewards (TBR) are distributed to reporters, creating stronger incentives for consistent, full-coverage reporting across all cycle list queries. Core Changes Distribution timing - Rewards now accumulate over a configurable period (via governance parameter
- [2025 Year-In-Review](https://tellor.io/blog/2025-year-in-review/) - Overview As 2025 draws to a close, Tellor reflects on a transformative year. After a rigorous period of building, it was finally time for Tellor’s standalone oracle chain, Tellor Layer, to be unleashed into the wild. Mainnet was finally deployed in Q3 and hasn’t looked back since, solidifying its role as a cornerstone of data
- [Upgrade Testnet Tag: v6.0.0](https://tellor.io/blog/testnet-update-v6_0_0/) - We will be upgrading Tellor Palmito Testnet around 1:00 PM EST on Tuesday, October 28th! If you have questions feel free to ping us on the ⁠#developers channel in our discord! Updates include: tokenbridge init function for testnet New Price feeds for yETH, vyUSD, sUSN, and sfrxUSD! (reporterd) Prometheus telemetry for individual sources! Improved discord
- [Upgrade Testnet Tag: v5.1.2](https://tellor.io/blog/testnet-update-v5_1_2/) - We will be upgrading Tellor Palmito Testnet around 10:30 AM EST on Tuesday, September 30th! If you have questions feel free to ping us on the ⁠#developers channel in our discord! Updates include: Timestamps added to aggregate report events. Events for when tokens are added to stake. Batched data reporting with `MsgBatchSubmitValue`! Extra Rewards Account
- [Upgrade Mainnet Tag: v5.1.1](https://tellor.io/blog/mainnet-update-v5_1_1/) - We will be upgrading Tellor Mainnet around 10:15 AM EST on Wednesday, September 3! If you have questions feel free to ping us on the ⁠#developers channel in our discord! Updates include: Added prometheus endpoints for tracking individual price sources. Added new Query `layerd query reporter selections-to` which returns the address and size of selections
- [Tellor Layer Mainnet Open to Public](https://tellor.io/blog/layer-mainnet-open-to-public/) - Tellor Layer Mainnet is now open to the public! Layer is the next evolution of the Tellor oracle – a fast, permissionless, secure blockchain, designed to give developers full control over how data gets on-chain. Unlike traditional oracle networks that offer rigid and centralized pre-built feeds; Tellor Layer lets builders define their own data, while
- [Social Forking a Cosmos SDK Chain](https://tellor.io/social-forking-cosmos/) - Authored By: Caleb Potter, Backend/DevOps Engineer at Tellor Social forking is a community-driven response to disagreements or failures in a blockchain’s governance, validator set, or protocol direction. It has played a pivotal role in blockchain history, serving as a last-resort tool when communities face irreconcilable differences. Unlike technical forks, which are driven by code changes
- [Upgrade Palmito Testnet Tag: v5.1.0](https://tellor.io/blog/palmito-testnet-update-v5_1_0/) - We will be upgrading Layer Palmito around 10am EST this Wednesday, July 2nd! If you have questions feel free to ping us on the ⁠#testing-layer channel in our discord! Updates include: Added tips for token bridge deposits Increased Report Window Time Adjusted disputed stake allocation after winning dispute No stake reporting Allowing selectors to become
- [Upgrade Palmito Testnet Tag: v5.0.0](https://tellor.io/blog/palmito-testnet-update-2/) - We will be upgrading Layer Palmito around 9am EST this Thursday, May 22! If you have questions feel free to ping us on the ⁠#testing-layer channel in our discord! Updates include: No-stake reporting is now enabled, letting anyone submit data without a bonded stake Selectors can now act as reporters, expanding flexibility in Layer’s architecture
- [Upgrade Palmito Testnet Tag: v4.0.3](https://tellor.io/blog/palmito-testnet-update/) - We will be upgrading Layer Palmito around 10am EST this Thursday, May 1! If you have questions feel free to ping us on the ⁠#testing-layer channel in our discord! Updates include: Receiver address is now required on the depositToLayer function Recovery for deposits with undecodable deposit addresses Reporter daemon will now be a separate binary
- [Upgrade Chickamauga Testnet Tag: v3.0.4](https://tellor.io/blog/chickamauga-testnet-update/) - We will be upgrading Layer Chickamauga tomorrow at about 1:30PM EST tomorrow Wednesday March 12! If you have questions feel free to ping us in the ⁠testing-layer channel! Thank you for testing with Tellor! Updates include: Added lastConsensusTimestamp to improve user security on bridged data Added better monitoring (telemetry) Upgrade Tag: v3.0.4 Upgrade Height: 1185570
- [Tellor Layer 101: An introduction to the next Evolution of the Tellor Protocol](https://tellor.io/blog/101/) - Tellor is a decentralized, censorship-resistant oracle protocol designed to power blockchain applications with reliable and user-tailored off-chain data. Building on years of successful upgrades and improvements, Tellor is evolving into its own Layer 1 blockchain, Tellor Layer. This transition will mark a new level of security and scalability for the oracle protocol, while continuing to
- [Palmito Testnet Opening to Public](https://tellor.io/blog/palmito-testnet-opening-to-public/) - Tellor’s new testnet, Palmito, will be open to the public on: THURSDAY APRIL 2 @ 10:00PM EST If you are running a Chickamauga node, feel free to turn it off. Don't hesitate to ping us in the #⁠testing-layer channel of our discord if you have any questions! Please provide a Sepolia address to receive test
- [Layer Security 201](https://tellor.io/blog/layer-security-201/) - This article will lay out the formulas and thinking behind Tellor security. It should give you a solid understanding of the current crypto-economic guarantees underlying the system and even the best ways to attack it and how much it will cost. For a more general overview of Tellor and how it works, check out our
- [Oracles x AI](https://tellor.io/blog/tellor-x-ai/) - "What are the AI opportunities for Tellor?" We’ve been asked this and other questions many times. How does Tellor utilize AI? How does AI fit into the broader narrative of determining truth? How does AI replace the need for oracles? The truth is we’ve been looking at it. As someone who’s been through the cycles
- [A Three-Layered Approach: Solving the Oracle Problem](https://tellor.io/blog/a-three-layered-approach/) - In a world where misinformation is rampant—and where most oracle exploits occur not at the protocol level but through manipulation of data sources or assets—it’s essential to leverage available technology to counter these challenges. The oracle problem extends beyond simply ensuring data delivery. The oracle problem can be broken down into 3 layers: Integrity –
- [Tellor Chickamauga Testnet Now Live](https://tellor.io/blog/tellor-chickamauga-testnet-now-live/) - We are excited to announce that the Tellor Layer public testnet, Chickamauga Testnet, is now live! This marks a significant milestone in the development of Tellor Layer, our stand-alone Layer 1 blockchain. What is Tellor Layer? Tellor Layer is designed to come to consensus on any subjective data by leveraging a network of staked parties
- [Tellor Layer Whitepaper](https://tellor.io/blog/tellor-layer-white-paper/) - Note: This is a blog version of the Tellor Layer whitepaper which is available here. Tellor Layer is currently in production. This is an overview of the intended workings of the system. Feedback and contributions are very welcome and we hope to engage in a dialogue with the community throughout the design and build process.
- [Tellor Security 301](https://tellor.io/blog/tellor-security-301/) - The Tellor oracle is a decentralized network of reporters dedicated to creating transparent and censorship resistant data. Having been live for several years now, with several upgrades, Tellor has become quite the robust system, consistently driving towards decentralization and security. Now Tellor is in the process of becoming its own L1. Although much of the
- [2024 - A Year In Review](https://tellor.io/blog/2024-a-year-in-review/) - Overview Another trip around the sun, another year on the frontline of tackling the oracle problem. The majority of 2024 was spent with heads down & focused on building out Tellor Layer, our new L1 chain built to focus on providing robust, censorship-resistant oracle data. On the heels of excitement from Layer’s announcement made at
- [A New Swoosh: The Life and Times of the Tellor Logo](https://tellor.io/blog/a-new-swoosh-the-life-and-times-of-the-tellor-logo/) - Introduction Today, we’re thrilled to unveil a refreshed look for the Tellor logo and brand. At Tellor, our focus has always been on building the best technology—our protocol is the heart of everything we do. But as crypto evolves, so do the ways we communicate who we are and what we stand for. We believe
- [Long Tail Asset Oracles For Collateral In Defi](https://tellor.io/blog/long-tail-asset-oracles-for-collateral-in-defi/) - We all see it. The number of tokens in the world has exploded. Whether it’s memecoins, NFTs, real world assets (RWAs), options and futures positions, prediction market tokens, tokenized financial positions (i.e. vaults), and even tokenized other tokens (e.g. LSTs), we love tokens. And this is great. Yet most of DeFi still doesn’t support these
- [Tellor Antietam Testnet Now Live](https://tellor.io/blog/tellor-antietam-testnet-now-live/) - We are excited to announce that the Tellor Layer public testnet, Antietam Testnet, is now live! This marks a significant milestone in the development of Tellor Layer, our stand-alone Layer 1 blockchain built using the Cosmos SDK. What is Tellor Layer? Tellor Layer is designed to come to consensus on any subjective data by leveraging
- [Tellor’s Oracle L1, Tellor Layer, Goes to Audit: A Major Milestone](https://tellor.io/blog/tellors-oracle-l1-tellor-layer-goes-to-audit-a-major-milestone/) - Exciting news! The code for Tellor Layer has officially gone to audit, marking a significant milestone in our journey to build a decentralized, robust, and secure Layer 1 oracle blockchain using the Cosmos SDK. Tellor Layer is designed to reach consensus on any subjective data using a network of staked reporters, ensuring accurate and reliable
- [Tellor Deploys To zkSync Era](https://tellor.io/blog/tellor-deploys-to-zksync-era/) - Tellor is now live on zkSync Era! About this deployment Tellor is a decentralized and permissionless oracle protocol that securely brings any verifiable data on chain using robust crypto economic design. We are excited to announce that today we have deployed to zkSync Era. Tellor, the oracle protocol most committed to censorship-resistance, has been deployed
- [Tellor Deploys To BOB](https://tellor.io/blog/tellor-deploys-to-bob/) - Tellor is now live on BOB! About this deployment Tellor is a decentralized and permissionless oracle protocol that securely brings any verifiable data on chain using robust crypto economic design. We are excited to announce that today we have deployed to BOB. BOB is a hybrid L2 that combines the security of Bitcoin with the
- [Introducing the Architecture Decision Records (ADR) for Tellor Layer](https://tellor.io/blog/introducing-the-architecture-decision-records-adr-for-tellor-layer/) - Welcome to a pivotal moment in the evolution of oracles and the Tellor ecosystem. As we approach the first anniversary of embarking on the ambitious project that is Tellor Layer, it's time to peel back the curtains and share a deeper look into the architectural backbone that promises to redefine our protocol. We're talking about
- [Tellor Delpoys to Fraxtal](https://tellor.io/blog/tellor-delpoys-to-fraxtal/) - Tellor is now live on Fraxtal! About this deployment Tellor is a decentralized and permissionless oracle protocol that securely brings any verifiable data on chain using robust crypto economic design. We are excited to announce that today we have deployed to Fraxtal. Fraxtal is an innovative EVM-compatible rollup powered by the OP stack, offering fast,
- [Tellor Deploys to Polygon zkEVM](https://tellor.io/blog/tellor-deploys-to-polygon-zkevm/) - Tellor is now live on Polygon zkEVM! About this deployment Tellor is a decentralized and permissionless oracle protocol that securely brings any verifiable data on chain using robust crypto economic design. We are excited to announce that today we have deployed to Polygon zkEVM! Polygon zkEVM (Zero-Knowledge Ethereum Virtual Machine) is a Layer 2 scaling
- [Tellor Deploys to Linea](https://tellor.io/blog/tellor-deploys-to-linea/) - Tellor is now live on Linea! About this deployment Tellor is a decentralized and permissionless oracle protocol that securely brings any verifiable data on chain using robust crypto economic design. We are excited to announce that today we have deployed to Linea! Linea, a zkEVM chain, developed by ConsenSys that merges zero-knowledge proofs with full
- [Bridging Bitcoin Balances to Tellor-Enabled Chains: Introducing BTCBalance](https://tellor.io/blog/bridging-bitcoin-balances-to-tellor-enabled-chains-introducing-btcbalance/) - TLDR: New functionality just dropped in the Tellor system enabling users to bridge balances from Bitcoin to any Tellor enabled chain. The BTCBalance query type revolutionizes how users and dapps can leverage Bitcoin’s vast value across Defi. What are query types? In order for Tellor to provide flexibility and allow anyone to utilize the protocol,
- [Tellor @ EthDenver 2024 Preview](https://tellor.io/blog/tellor-ethdenver-2024-preview/) - Tellor @ EthDenver 2024 Preview EthDenver stands not just as a mere convention and hackathon but as the ceremonial ribbon-cutting for the year ahead. For us at Tellor, this gathering holds a treasure trove of memories and milestones; back in 2020 we were just attendees with a newly launched protocol, back in 2021, we were
- [Tellor Deploys to Mantle Network](https://tellor.io/blog/tellor-deploys-to-mantle-network/) - Tellor is now live on Mantle's mainnet & Goerli testnet! About this deployment Tellor is a decentralized and permissionless oracle protocol that securely brings any verifiable data on chain using robust crypto economic design. Mantle is a high-performance Ethereum layer-2 network with modular design, low fees and high security. By deploying the Tellor oracle and
- [Using Tellor Best Practices Part 2: Maintenance](https://tellor.io/blog/using-tellor-best-practices-part-2-maintenance/) - If you’ve read Part 1 of our Best Practices series actions you learned how to properly integrate Tellor into your project along with the proper methods of implementation for security. Now it's time to make sure the data flowing into your contracts is properly checked & monitored. Here’s our recommendations: Hold TRB for disputes Reporters
- [Using Tellor Best Practices Part 1:  Development](https://tellor.io/blog/using-tellor-best-practices-part-1-development/) - This is a two part series that is designed to guide you through the necessary preparations & processes for using the Tellor oracle. The first part walks a user through actions for the security of your code / integration, and the second is actions to help make sure the data flowing into your contracts is
- [2023 Year In Review](https://tellor.io/blog/2023-year-in-review/) - Overview 2023 kicked off with a bang! Riding on the wave of excitement from our late-2022 achievements, including the launch of Tellor 360 and our integration with Liquity, we hit the ground running. We revamped our documentation to be more user-friendly, anticipating a surge in interest. Our journey this year wasn't just about expanding our
- [Liquid Staking Tokens: Understanding the Oracle Perspective in DeFi's Evolving Landscape](https://tellor.io/blog/liquid-staking-tokens-understanding-the-oracle-perspective-in-defis-evolving-landscape/) - Liquid Staking Tokens: Understanding the Oracle Perspective in DeFi's Evolving Landscape Liquid staking tokens (LSTs) of Ethereum, like stETH (Lido's staked ETH) and rETH (Rocket Pool's staked ETH), have gained popularity as they allow users to earn staking rewards on the Ethereum network while maintaining liquidity. However, yield is never risk-free, after all there’s no
- [How to Send Discord Alerts for Disputable Tellor Values (and auto-dispute too)](https://tellor.io/blog/the-disputable-values-monitor-guide/) - This is a step-by-step guide for installing and using the Disputable Values Monitor (DVM). The methods outlined here should work on a fresh installation of Ubuntu 20.04 LTS (Amazon t2.small AWS instance). Individual commands may differ with other environments particularly for installing python 3.9. Note: The Disputable Values Monitor uses feeds from telliot-feeds, and endpoints.yaml
- [Tellor: at a glance](https://tellor.io/blog/tellor-at-a-glance/) - TLDR: Launched in 2019, it decentralizes the process of putting real world data on-chain Tellor is an immutable and fully permissionless system. Reporters stake TRB to report and earn TRB (not trivial and there are associated risks) Tellor Layer, launching in 2024, enhances the protocol to bridge data anywhere Welcome to the world of
- [Tellor Layer](https://tellor.io/blog/tellor-layer/) - Background Usage of the current Tellor protocol is expanding, with the system having demonstrated its security across various EVM networks. However, the constant-change of crypto has led the Tellor team to recognize trends that signal potential challenges for the existing structure of the Tellor protocol in the upcoming years, specifically: 1. Emergence of Application-Specific Chains:
- [How to Install Telliot - A Beginner Friendly Guide](https://tellor.io/blog/how-to-install-telliot-the-noob-friendly-guide/) - This is a step by step guide for how to install Telliot using the command line. Telliot is an open source client for interacting with the Tellor oracle. The methods outlined here were confirmed on a fresh installation of Ubuntu 20.04 LTS (Amazon t2.micro AWS instance). Individual commands will differ with other environments (particularly for
- [Tellor Deploys to Manta Pacific](https://tellor.io/blog/tellor-deploys-to-manta-pacific/) - Tellor is now live on Manta Pacific Mainnet! Tellor is a decentralized and permissionless oracle protocol that uses staking and disputing mechanisms to bring data onchain. This Manta deployment of Tellor is identical to other evm implementations with the latest version of Tellor. If you’re a developer and you need oracle data for your Manta based
- [Deployed: Oracle Contract Gas Optimization](https://tellor.io/blog/deployed-oracle-contract-gas-optimization/) - We have deployed a new version of the oracle contract (TellorFlex) for gas optimization. As the previous oracle contracts are immutable, they remain operational and we are looking forward to the community adopting this new contract. In line with routine protocol optimizations, these changes have been applied to the TellorFlex Contract code to reduce
- [How to Report Oracle Data With Telliot](https://tellor.io/blog/how-to-report-oracle-data-with-telliot/) - This is a step-by-step guide on how to use Telliot for reporting Tellor oracle data. This is not a guide for how to install Telliot. If you haven't installed Telliot yet, check out our noob friendly installation guide, and come back when you're ready to report. Private keys note: Reporting Tellor oracle data with Telliot
- [How to Install Python 3.9 and venv on Ubuntu](https://tellor.io/blog/how-to-install-python-3-9-and-venv-on-ubuntu/) - This is a step-by-step guide for installing Python3.9 and the python virtual environment manager: venv. The methods outlined here are intended for a fresh installation of Ubuntu 20.04 LTS. Prerequisites: A computer, virtual machine (AWS, Google Cloud, etc.), or windows subsystem for linux (WSL) running ubuntu version 20.04. (other versions of Ubuntu are probably fine,
- [Defending Tellor](https://tellor.io/blog/defending-tellor/) - Tellor is a synergetic oracle protocol that is unique in the Ethereum Oracle space in the way that it enables people from all over the world to operate it via on-chain functions and smart contracts. This permissionless service offers flexibility that comes with unique monitoring challenges for the network's participants. Reporters need to know whether
- [Decentralizing DataSpecs](https://tellor.io/blog/decentralizing-dataspecs/) - The Tellor protocol stands out for its decentralized and permissionless design. Beyond decentralization, Tellor offers flexibility in allowing users to request custom data. Yet, one aspect we've continually strived to improve is the decentralization of how we handle our data specifications or 'dataSpecs'. These are currently hosted on GitHub, but now we are taking a
- [On-Chain Registry Testnet Deployment](https://tellor.io/blog/on-chain-registry-testnet-deployment/) - Tellor is a flexible oracle protocol that allows anyone to define new data types, known as query types, to fit their unique needs. A query type is laid out in a data specification document, providing a blueprint for reporters, users, data validators, voters, and all other participants to understand the precise nature of the expected
- [How to Claim Tellor Autopay Tips](https://tellor.io/blog/how-to-claim-tellor-autopay-tips/) - This is a step by step guide for how to use Tellor’s open-source tip claiming software: the timestamps-tip-scanner. Caution: Running any Tellor client like the timestamps-tip-scanner involves handling private keys. Never share your private keys with anyone under any circumstances. Take appropriate precautions and know that you are using this software at your own risk.
- [Tellor Automatic Tipping Guide](https://tellor.io/blog/tellor-automatic-tipping-guide/) - This is a step by step guide for how to use Tellor’s open-source auto-tipper-bot to automate tipping strategies for using Tellor as your primary oracle. We will also cover how to set up fallback tipping for protocols that use Chainlink as their primary oracle and Tellor as their secondary oracle. Note: Tipping tellor reporters involves
- [The Key To Tellor's Customizability: An In-Depth Guide to Query Types](https://tellor.io/blog/the-key-to-tellors-customizability-an-in-depth-guide-to-query-types/) - In this article, we'll look at how Tellor permissionlessly enables gasless governance, decentralized cross-chain communication, on-chain API calls and more, with Query Types. Introduction Tellor is an immutable decentralized oracle protocol that allows users to request specific pieces of data and incentivizes reporters to place those values in an on-chain database. Tellor is compatible with
- [User Checklists](https://tellor.io/blog/user-checklists/) - ‘User Checklists’ have now been added to Tellor’s documentation! At Tellor, we pride ourselves on having created robust client software and thorough documentation to guide new users. Using a truly decentralized and permissionless oracle, however, presents some unique security challenges, and we want to help make sure these are accounted for in every integration. With
- [How to Manage CLI Applications on Hosted VMs with Screen](https://tellor.io/blog/how-to-manage-cli-applications-on-hosted-vms-with-screen/) - This guide will help you learn to use Screen. Screen is a fantastic tool for keeping Tellor clients (and other command line based applications) running on hosted machines when you don’t have the window open on your client machine. These methods can be used with AWS (or other VM) instances running Ubuntu or any other
- [Tellor's EVMCall: Contract Calldata Across EVM Chains](https://tellor.io/blog/tellor-evmcall-contract-calldata-across-evm-chains/) - Introducing Tellor's EVMCall Contract Calldata Across EVM Chains Discover the power of Tellor's EVMCall for cross-chain calldata retrieval, and experience enhanced security, efficiency, and transparency when relaying on-chain data across EVM chains. TLDR: EVMCall enables Tellor users on chain X to receive data from smart contracts on chain Y and have them written to chain
- [Tellor Deploys to Sepolia Testnet](https://tellor.io/blog/tellor-deploys-to-sepolia-testnet/) - For those new to Ethereum and similar smart contract networks, there are Mainnets, and there are public testnets. These testnet networks serve as testing grounds for protocol and smart contract developers to evaluate protocol updates and potential smart contracts in a setting that closely resembles a live environment, prior to Mainnet deployment. Think of it
- [Tellor Deploys to Filecoin Virtual Machine](https://tellor.io/blog/tellor-deploys-to-filecoin-virtual-machine-hyperspace/) - Tellor is now live on Filecoin Virtual Machine mainnet and Hyperspace, the test-network of the FVM! FVM is a runtime environment for smart contracts on the Filecoin Network and is set for mainnent launch in March. This opens up a whole new world of use-cases to Filecoin Network and we wanted Tellor to be a
- [How to Minimize Attack Vectors On Tellor](https://tellor.io/blog/how-to-minimize-attack-vectors-on-tellor/) - Overview Types of attacks on Tellor Tellor is a robust decentralized oracle that’s been live for more than three years. Over that time, we’ve been hacked, attacked, audited, and beat up more times than we can count, but with that, we’ve learnt a lot about the attack vectors present in the system and how to
- [Tellor Deploys to Arbitrum](https://tellor.io/blog/tellor-deploys-to-arbitrum/) - Tellor is now live on Arbitrum Mainnet and Goerli Testnet! Tellor is a decentralized and permissionless oracle protocol that uses staking and disputing mechanisms to bring data onchain. This Arbitrum deployment of Tellor is identical to other evm implementations with the latest version of Tellor. If you’re a developer and you need oracle data for
- [Tellor Deploys to Optimism Mainnet](https://tellor.io/blog/tellor-deploys-to-optimism-mainnet/) - Tellor is now live on Optimism Mainnet! Tellor is a decentralized and permissionless oracle protocol that uses staking and disputing mechanisms to bring data onchain. This Optimism deployment of Tellor is identical to other evm implementations with the latest version of Tellor. If you’re a developer and you need oracle data for your Optimism based
- [Update!  New oracle contract deployed.](https://tellor.io/blog/update-new-oracle-contract-deployed/) - Today Tellor is deploying an updated oracle contract with some quality of life improvements. As you may recall, upgrades to the now previous oracle contracts are impossible as of the Tellor360 upgrade, so this update is effectively a fork of the oracle contract. Given its proximity to the Tellor360 upgrade and the fact that
- [How to Withdraw Your Reporter Stake](https://tellor.io/blog/how-to-withdraw-your-reporter-stake/) - This is a guide for how to “un-stake” your TRB when you no longer wish to submit data to the Tellor oracle. We will use Metamask wallet and a block explorer. This method is similar for all Tellor networks. The process is simple. It requires calling two functions with a 7 day wait in between.
- [How to Create Token Approval Transactions with Remix](https://tellor.io/blog/how-to-create-token-approval-transactions-with-remix/) - This is a step-by-step guide for using Remix to build and execute an approve function. It's written for the Tellor Contracts on Polygon and Mumbai specifically, but the methods outlined here can be adjusted and used with most other ERC20 token contracts also. Enjoy! Introduction: Why do we need to do this? If you’re reading
- [Tellor Launches on Gnosis Chain](https://tellor.io/blog/tellor-launches-on-gnosis-chain/) - Tellor is now live on Gnosis Chain’s Mainnet and Chiado Testnet! Tellor is a decentralized, censorship-resistant oracle protocol that uses staking and disputing mechanisms to bring data onchain. Since Gnosis Chain is evm compatible, this version of Tellor will be identical to other evm implementations with the latest version of Tellor. If you’re a developer
- [Tellor upgrades on Polygon mainnet](https://tellor.io/blog/tellor-successfully-upgrades-on-polygon-mainnet/) - Tellor360 is now live on Polygon’s mainnet! We've selected Polygon as our first mainnet in production that 360 is live on, and we couldn't be more excited to announce to the world that they can now start using it! Tellor360 is the only truly decentralized and immutable oracle solution on Polygon. If you’re a developer
- [2022 Year in Review ](https://tellor.io/blog/2022-year-in-review/) - It’s that time of the year again for a year in review and time flies when you #buidl. I know for many 2022 will be looked back through the prism of a deep bear market, gains lost, protocols going down, and plenty of FUD on cryptotwitter. But on the bright side, bear markets are when
- [Updating Tellor Gnosis Multisig to Safe (Gnosis Safe)](https://tellor.io/blog/updating-tellor-gnosis-multisig-to-safe-gnosis-safe/) - Tellor will be transferring its funds from the former Gnosis Multisig to their latest Safe wallet (formerly Gnosis Safe). We have been using the original Gnosis Multisig since the beginning of Tellor in 2019 but many tools no longer use this version and have since transitioned to Safe. Using a multi-signature wallet that requires more
- [How to Query Custom Data with Tellor](https://tellor.io/blog/how-to-query-custom-data-with-tellor/) - We all know that you can do price feeds super easily with Tellor. In fact, we put prices from every single token on coingecko up just to prove it.
- [TRB Migration](https://tellor.io/trb-migration/) - What happened On February 15, 2021, the Tellor system experienced a major error while deploying the upgrade to v2.6.1. To allow a method for Tellor to upgrade without forking the entire system, we utilize a proxy contract that holds all the functionality and just fork this one contract. These upgrades are presented for community input
- [Tellor360 has Launched on Ethereum Mainnet](https://tellor.io/blog/tellor360-has-launched-on-ethereum-mainnet/) - TL;DR: Tellor is now the only immutable & decentralized oracle in the “EVMiverse,” complete with any easy to onboard, unified structure across all EVM chains. What Happened Today the vote for Tellor 360 has passed and the Tellor 360 upgrade has launched on Ethereum Mainnet. This was no trivial feat as the odds were
- [The Vote for Tellor360 is Live! What this Means and How to participate.](https://tellor.io/blog/the-vote-for-tellor360-is-live-what-this-means-and-how-to-participate/) - We’ve been hard at work preparing for this moment, and we're excited it’s here. Please read on if you want to know more about the goals of this upgrade and how you can participate to make it happen. The vote for Tellor360 is Now live! This vote is the last governance-voted upgrade to the Tellor
- [Prepare to Vote on Tellor360 Upgrade! (10/25)](https://tellor.io/blog/prepare-to-vote-on-tellor-360-upgrade-10-25/) - The vote for Tellor360 goes live on Tuesday 10/25/2022 for upgrading the Tellor contracts on Mainnet Ethereum to Tellor360. We want everyone to be aware of the changes, why they make Tellor better, and how to participate in making this happen. Let's jump in. Tellor currently, and for the last 2 years, has operated
- [Tellor360 - The Next Level](https://tellor.io/blog/tellor360-the-next-level/) - Updated October 21, 2022 Tellor as a protocol has been alive for three years now and has seen tremendous changes over the years. We continue to grow as a network, community, and project, continually using the lessons learned to create a better system that stays true to the values which we were founded on. current
- [Tellor 360 deployed on Mumbai Testnet!](https://tellor.io/blog/tellor-360-deployed-on-mumbai-testnet/) - Tellor 360 deploys to Mumbai The Tellor team is pleased to announce our initial deployment of Tellor360 to Polygon’s Mumbai Testnet. Our team will test the oracle functionality on mumbai first and then deploy to polygon-mainnet, to test most of our system in a real production environment. Also it’s worthy to note that unlike
- [Next Challenges for Tellor](https://tellor.io/blog/next-challenges-for-tellor/) - Tellor is live and better than ever. We’ve laid out a solid plan with tellor360 for removing any lingering issues of governance, token centralization, and team dependence and the protocol is well on its way to changing the space in a big way. As we continue to mature and move to countless chains, there are
- [The Tellor Machine Part 1: Autopay](https://tellor.io/blog/the-tellor-machine-part-1-autopay/) - The Tellor Machine series is an in-depth look at why Tellor works the way it works. Along the way we will look back at some early social media posts about the oracle problem, examining what a truly decentralized oracle should be. Enjoy! It's been said that, the term “cryptoeconomics” was first used by some well
- [The Tellor Machine - Part 0: The Oracle Problem](https://tellor.io/blog/the-tellor-machine-part-0_oracle_problem/) - 7 years ago, a reddit post by ​u/dalovindj started (possibly) the first significant social media conversation about “the oracle problem”.
- [Filecoin Insurance](https://tellor.io/blog/filecoin-insurance/) - Piggy-backing off of our presentation on Filecoin, the Tellor devs have put together an mvp smart contract for the users of Filecoin. With the filecoinInsurance smart contract, users can leverage Ethereum’s robust network to add an insurance layer to their agreements (aka ‘deals’); providing coverage in the case that the data storage provider or ‘prover’
- [Tellor Launches on Algorand](https://tellor.io/blog/tellor-launches-on-algorand/) - In an effort to facilitate a multi-chain ecosystem, the Tellor oracle has been re-implemented for the Algorand Virtual Machine (AVM). On Algorand, Tellor oracles continue to be secure, decentralized, and easy to integrate. The primary contracts of the Tellor oracle on Algorand are the feed contracts, the medianzier contracts, and the governance contract. At a
- [How to Delegate Your Vote](https://tellor.io/how-to-delegate-your-vote/) - If you want to show your support while avoiding paying gas voting on future Tellor proposals... You can delegate your voting power! Delegating means that you are assigning your voting power, trusting the delegate to make the right decisions on your behalf, and thus would not need to vote on any proposals or disputes to
- [Tellor RNG](https://tellor.io/blog/tellor-rng/) - Tellor officially now has its own Random Number Generator! After seeing such high market demand for a fully decentralized RNG, we decided to flex our muscles with our own unique approach to randomness. The new query type uses the following process to produce a random number: Takes a timestamp as the input Retrieves the next available
- [Gas Price Oracle](https://tellor.io/blog/gas-price-oracle/) - Providing historical gas price data on-chain enables DeFi protocols to build smart contracts with reimbursement functionality; helping to create new ways for DAOs, DeFi, and NFT projects to give back to their communities. Fostering community participation is one of the top priorities for any project in the Ethereum smart contract space. The most successful DAOs
- [How to Deploy Tellor on an EVM Chain](https://tellor.io/how-to-deploy-tellor-on-an-evm-chain/) - So, your EVM chain is all ready to go, but one key component is missing… …a decentralized oracle! Well, you’re in luck because the oracle experts at Tellor have released a version that can now be implemented on any EVM compatible chain! Here is a guide on how to spin up your own version of
- [Crawl. Walk. Run: The narrative for proper values-driven growth of decentralized projects.](https://tellor.io/crawl-walk-run-the-narrative-for-proper-values-driven-growth-of-decentralized-projects/) - There seem to be different comfort levels when it comes to centralization in crypto projects. Perhaps this is due to differing ideas of what the purpose of blockchain is, maybe a lack of patience with scaling efforts, or the pervasiveness of speculators and the subsequent influence that they have on the success or failure of
- [The Data Feed: A Viewport to Tellor](https://tellor.io/blog/the-data-feed-a-viewport-to-tellor/) - The Tellor Data Feed provides a human readable view of all submissions to Tellor’s multichain databases in real time. The values are listed alongside the reporter’s public address with clickable links to the corresponding Submit Value transaction as it can be found on etherscan. It’s always helpful for smart contract protocols to have front-end tools
- [It’s Time to Vote for Tellor Treasury Q2 2022...Again!](https://tellor.io/its-time-to-vote-for-tellor-treasury-q2-2022-again/) - The first proposal for a Q2 Treasury did not pass. Unfortunately this was due to an error...the manual function that votes for delegated addresses was not run. This caused a significant under-count of total token-weight. Given that the community actually did show enough support to pass the proposal, we’ve decided to propose a re-vote! We
- [It’s Time to Vote for Tellor Treasury Q2 2022! ](https://tellor.io/its-time-to-vote-for-tellor-treasury-q2-2022/) - Tellor Treasuries is a special contract that rewards TRB holders who lock up tokens and participate in governance. Each treasury period lasts 90 days roughly corresponding to a standard financial quarter. In order to receive rewards, stakers are required to vote on all governance or delegate their voting power to an address that will vote. 
- [The Tellor Snapshot Oracle](https://tellor.io/introducing-the-tellor-snapshot-oracle/) - Tellor leverages simple crypto-economic incentives to decentralize the delivery of a Snapshot vote result on-chain, making real and meaningful participation possible for every token holder in your community. Background On-chain token-weighted governance allows smart contract developers to democratize blockchain processes in a way that wasn’t really possible before the first voting platforms were coded up
- [Tellor Security 201](https://tellor.io/security-201/) - The Tellor oracle is a decentralized network of reporters dedicated to providing data to various chains. Having been live for several years now, with several upgrades, Tellor has become quite the robust system, consistently driving towards decentralization and security. This article should give you a solid understanding of the current crypto-economic guarantees underlying the system
- [Tellor Deployed to Harmony](https://tellor.io/tellor-deployed-to-harmony/) - We are excited to announce that the Tellor oracle is up and running on Harmony! Tellor was approved for a $50k grant as one of 35 teams selected for Harmony’s “Project X” initiative to invest in promising projects. We ran with it, and now the Tellor oracle is ready for use on Harmony’s EVM compatible
- [Defense of Oracles](https://tellor.io/defense-of-oracles/) - Tellor is a decentralized oracle that fetches pricing data for smart contracts on Ethereum. Since Ethereum and Tellor are the future of finance and will eventually back all financial contracts, we may have some security holes if the trillion dollar financial markets migrate over to our network without us properly thinking through the security of
- [How to be a TRB Holder: Learn how to best contribute to the success of Tellor](https://tellor.io/how-to-be-a-trb-holder-learn-how-to-best-contribute-to-the-success-of-tellor/) - When we set out to build Tellor, we knew we wanted to build a system that we wanted to also be a part of — we didn’t want to build a crypto ecosystem that didn’t fit our values. We aren’t a team that owns the majority of our token because we believe the holders of
- [Oracles and Settlement Prices: An Introduction to Settlement Procedure Standards in DeFi.](https://tellor.io/oracles-and-settlement-prices-an-introduction-to-settlement-procedure-standards-in-defi/) - It’s 2020, beginning of February. Our protagonist, let’s call him Bob, has a large tank of gas sitting in his backyard, enough to fill up his Ford a few times over. Unfortunately due to Covid-19, he’s kind of sidelined from using it for the foreseeable future. Fortunately for him though, his buddy Jim doesn’t believe
- [Best Practices for Oracle Users on Ethereum](https://tellor.io/best-practices-for-oracle-users-on-ethereum/) - Defi is a new and growing part of the Ethereum ecosystem, but one of the key pieces that is just beginning to get attention is oracles. Without oracles, defi would only have access to on-chain information which severely limits its applicability to real world use cases. As most of you know, the space is already
- [Staking, Disputes, and Voting](https://tellor.io/staking-disputes-and-voting/) - The Tellor technical design is a carefully designed crypto economic mechanism for providing measurably secure values on-chain. The staking amount in the current Tellor technical design is the amount of Tributes that a party needs to deposit before they can mine. The dispute fee is the amount of Tributes parties need to dispute given values.
- [We Heard You Like Price Feeds](https://tellor.io/we-heard-you-like-price-feeds/) - So we put every Coingecko spot price on chain. Tellor has always aimed to be the most transparent and permissionless oracle protocol out there. But we are particularly excited about how flexible Tellor has become regarding what data you can ask our reporters to put on-chain and how easy it is to do. What better
- [What is Tellor?](https://tellor.io/what-is-tellor/) - Tellor is a Decentralized Oracle that provides the most secure solution for those that need high value off-chain data in their smart contracts. It provides the infrastructure for decentralized applications to bring off-chain data on-chain by properly incentivizing random miners to provide data. Why did we #buidl it? Blockchain networks, or more specifically, the Ethereum
- [Why we built Tellor](https://tellor.io/why-we-built-tellor/) - For the past year and a half, we’ve had the privilege to focus on building Daxia, a protocol for decentralized derivatives on Ethereum. In layman terms, a derivative is simply a financial contract betting on the future price of something. At its core, derivative contracts are a perfect use case for Ethereum and other decentralized
- [No pre-mine, no ICO.: Why we went for a Dev-Share](https://tellor.io/no-pre-mine-no-ico-why-we-went-for-a-dev-share/) - What we do at Tellor At Tellor we’ve created a decentralized oracle that provides the most secure solution for those that need high value off-chain data in their smart contract and the data output is properly secured by a hybrid PoW/PoS consensus mechanism. Decentralized oracles in general allow smart contracts to escape the current boundaries of blockchains
- [Tellor Security Design](https://tellor.io/tellor-security-design/) - Tellor’s security protocol is a staked PoW system which requires five miner submissions before adding an official value on-chain. Each miner is required to be staked to be allowed to submit the Proof-Of-Work solution along with the requested data value and the first five miners are rewarded. This article will attempt to explain some of
- [Tellor and Binance](https://tellor.io/tellor-and-binance/) - We are very excited to announce that Binance Labs (Binance’s VC arm) has invested in Tellor and for the last 4 weeks Tellor has been in Berlin as part of the Binance Labs Berlin Chapter. We are honored to be a part of the Binance family and have been taking full advantage of this opportunity
- [Tellor Tributes (TRB): Mechanisms of the Token Supply Growth Rate](https://tellor.io/tellor-tributes-trb-mechanisms-of-the-token-supply-growth-rate/) - Tellor is a decentralized oracle on the Ethereum network and utilizes a mined token, the Tribute, to incentivize validators, secure data points, and handle all governance matters of the system. As a token that grows in supply over time, it is necessary for Tellor to set an issuance rate for its system. This rate will represent
- [On The Synthetix Oracle Issues](https://tellor.io/on-the-synthetix-oracle-issues/) - As many of you may have seen in the crypto news, Synthetix (a platform for derivatives) recently had an issue where their Oracle reported the wrong value and caused some serious losses (and conversely gains) for certain customers. As an oracle provider, we’ve gotten quite a few questions on how we would ‘solve’ the issue. But
- [On Oracles](https://tellor.io/on-oracles/) - A long time ago in a galaxy far away, there was just Bitcoin. It could only do very simple UTXO stuff. Then came V2 blockchains, which enabled smart contracts, tokenization and basic escrow payments within closed systems. This is where we sit. The next phase is the connected blockchain. V3 will be streamlined and scalable
- [Tellor launches to Mainnet!](https://tellor.io/tellor-launches-to-mainnet/) - Tellor is thrilled to announce the launch of our decentralized oracle on the Ethereum Mainnet. It has been a big week for us! First, we had a successful audit from our friends and security partners, Certik, who will be releasing a case-study on us very soon. And now, our mainnet launch! Now we can officially set our
- [Certik Audit of Tellor Completed!](https://tellor.io/certik-audit-of-tellor-completed/) - We are proud to announce the successful audit performed by CertiK. CertiK, is the leading blockchain security company, founded by Computer Science professors from Yale and Columbia University. They pioneered using Formal Verification technology to perform comprehensive mathematical computations that are able to identify undetected vulnerabilities in a project’s source code, offering suggestions to prevent issues before they
- [Auditing your Smart Contacts](https://tellor.io/auditing-your-smart-contacts/) - Over the last year, the Tellor Oracle system has undergone three audits with two different auditors, been completely refactored several times, and has been critiqued and adjusted by some of the smartest minds in the space. It’s been a long road to getting a working system on mainnet, and this article should give you an
- [We, the blockchain.](https://tellor.io/we-the-blockchain/) - We, the blockchain. The blockchain sold to us is far from reality. Cryptographic security. Immutability. Code is law. The permanent, unchanging global database of interconnected nodes. ………… Despite nearly a decade of rhetoric, cryptocurrencies and the decentralized world surrounding them are not a revolution of money, databases, or even cryptography. Rather, it is a revolution
- [Tellor 101](https://tellor.io/tellor-101/) - Tellor is a decentralized oracle on Ethereum. To break down what exactly that means, first you have to understand the problem we’re solving: blockchain networks are very siloed. They’re amazing systems that allow for trustless financial contracts, but if you need access to information not on Ethereum, like the price of BTC/USD, an interest rate,
- [December 2019 Community Update](https://tellor.io/december-2019-community-update/) - We’re rounding out 2019 strong! Let’s jump right in. What’s New 800+ Telegram members Top of IDEX volume Radar Relay and Bidesk Listing Coinmarket Cap and CoinGecko listing Tellor on Delta Direct ADO EIP Draft 101 Article Unitalk AMA (Chinese community) What’s Happening This month has all been about volume. We saw a couple hundred
- [2019 Year-In-Review](https://tellor.io/2019-year-in-review/) - 2019 has been a year of new beginnings and forward momentum. We’ve had our nose to the proverbial grind-stone; #buidling and aiming for the moon. But as 2019 winds down to it’s concluding weeks we’ve decided to take a brief pause and look back at where we’ve come and what have we done. Let’s take
- [January Community Update](https://tellor.io/january-community-update/) - Happy New Year to everyone! It’s a new decade and we feel refreshed and ready to make 2020 a huge success for our project. We have a head full of steam from last month. Let’s take a look at what happened. Last Month At A Glance 1200+ Telegram members ~1k Twitter followers Eterbase Listing Citex
- [Tellor’s Belief & Future Vision: The Belief](https://tellor.io/tellors-belief-future-vision-the-belief/) - The control that governments and corporations have over money is becoming more obsolete as crypto and blockchain solutions mature. As these new systems develop, the dynamics of a private central bank and the poorly understood structure of our monetary system will be more widely viewed as unnecessary in favor of what’s next. From rising inequality
- [February Community Update](https://tellor.io/february-community-update/) - This month was a time of incremental improvements as well as the start of some development work that’s really exciting. Here’s your monthly update: Last Month At A Glance 1440 (+400) Telegram members 1300 (+300) Twitter followers Decentralized Club AMA New Articles Miner Pool Automatic Disputer Documentation Improvements Cross Chain Design Proposal Consensys Mentorship Our
- [Tellor Tokenomics 201](https://tellor.io/tellor-tokenomics-201/) - Tellor is a decentralized data oracle. This simple definition encompasses a robust system of game theory and economic incentives to encourage user participation in the Tellor network and deter attackers — Tellor’s “tokenomics”. This article explores how Tellor’s native cryptocurrency, Tributes (TRB), and its tokenomic model, create a system that provides truly decentralized data for
- [The Delusion of Liquidity](https://tellor.io/the-delusion-of-liquidity/) - You’ve heard the cries in every altcoin group on Telegram: “We need more liquidity!”, “If only we can get on “XYZ exchange” and get some real liquidity in our token”, or the more subtle “we should hire market makers for the token.” Liquidity is hailed as a godsend. The theory is that market makers and
- [March Community Update](https://tellor.io/march-community-update/) - March 03 2020 This past month contained plenty of activity in the world of Tellor. Our community continues to grow and we are grateful for all the contributions, help in the channel, and efforts to spread the word. Now, let’s review this past month! Last Month At A Glance 1760 (+312) Telegram members 1956 (+656)
- [Tellor Inflation + Quorum Upgrade Completed](https://tellor.io/tellor-inflation-quorum-upgrade-completed/) - Tellor has been live since August 1st, 2019. Since then, we’ve seen tremendous growth in the interest and robustness of the Tellor community and codebase. Looking back at initial design decisions though, we saw opportunity for improvement and upgraded our system to better enable Tellor’s long term success. Inflation reduction The block reward was reduced
- [Proposed V2 Upgrades](https://tellor.io/proposed-v2-upgrades/) - Tellor is a decentralized oracle that provides price data on Ethereum using a network of staked miners that compete to solve a PoW challenge and submit its solution along with requested data. We have been delighted to see the growth of the Tellor network since its initial launch in August 2019. From the get-go we
- [April Community Update](https://tellor.io/april-community-update/) - Our thoughts are with everyone in and out of the Tellor community affected by the Covid-19 outbreak, both directly and indirectly. This month has been a strange one and difficult for the entire world. The team here at Tellor is thankful to report that we’ve managed well considering, and our families are all safe and
- [What is an Oracle in DeFi and Why does it matter?](https://tellor.io/what-is-an-oracle-in-defi-and-why-does-it-matter/) - For those of you just learning about decentralized finance, or DeFi, this article should give you a good idea of what this growing niche is trying to achieve as a sub-industry of blockchain. “DeFi is essentially just conventional financial tools built on a blockchain — specifically Ethereum. They are mostly predicated on open-source protocols or
- [Quarterly Update: Q2 2020](https://tellor.io/quarterly-update-q2-2020/) - It’s a new format for our community updates from here on out! We are moving to quarterly frequency for these things where we will review the previous period and give a glimpse on what’s coming next. Because this is the first quarterly update there will be some redundant content from the last two previous monthly
- [Tellor Data Feed and Dispute Center](https://tellor.io/tellor-data-feed-and-dispute-center/) - We’re happy to present to our community new front end pieces for our oracle system: the Tellor Data Feed and the Tellor Dispute Center. Now it is easier than ever to see Tellor’s oracle in action and request Tellor price updates through our unique tipping mechanism which incentivizes miners to fetch your data. Additionally, with the new Dispute
- [Tellor V2 is LIVE!](https://tellor.io/tellor-v2-is-live/) - We are proud to announce Tellor V2 is now live on mainnet. Woohoo! From the get-go we knew that, in order to better serve our customers and future expected demand, Tellor would need to evolve. After talking with potential customers and users over the past year, we know that Tellor needs to get faster and more
- [Quarterly Update — Q3 Review](https://tellor.io/quarterly-update-q3-review/) - It’s that time again! Here’s your Quarterly Update, reviewing all that happened in Q3 and looking forward. Q3 2020 was all about acceleration for Tellor and in our minds felt like we had turned another big corner as a project. We had our busiest quarter in terms of tech developments, event sponsorships, speaking gigs/interviews, and
- [Tellor Improvement Proposals](https://tellor.io/tellor-improvement-proposals/) - BEHOLD! Tellor Improvement Proposals! Now that Tellor is fully decentralized, any further updates will need to be proposed and voted by the community. In order to ensure that the community is up to speed on how exactly this process shakes down, this article will aim to lay out the lifecycle of what has been deemed
- [Goodbye Admin Key, Hello Decentralized Governance](https://tellor.io/goodbye-admin-key-hello-decentralized-governance/) - Today is a special moment for the Tellor core team and our community. With both excitement and a healthy dose of apprehension, the founding team of Tellor is announcing we have sent our admin key to the “0 Address” and effectively destroyed the last centralized mechanism in Tellor’s protocol. All future changes and upgrades to the Tellor
- [Tellor v2.5: The first Tellor Improvement Proposal — TIP-2](https://tellor.io/tellor-v2-5-the-first-tellor-improvement-proposal-tip-2/) - The first decentralized upgrade of Tellor using the Tellor Improvement Proposal process has been released! This is our new token governance method of upgrading the Tellor protocol after our recent admin key burn. For this proposal we are looking to make some simple but effective changes to the mining network, which we believe will make it more robust and
- [The Tribe has spoken: V2.5 passes and is now live!](https://tellor.io/the-tribe-has-spoken-v2-5-passes-and-is-now-live/) - Our first upgrade using the new Tellor Improvement Proposal token governance method is in the books. We are happy to report that TIP-2, the proposal for V2.5 has passed and is now live on mainnet. Here are the voting metrics: 55 unique address voted 18% (of the Total TRB supply) voted in support As a community we should be
- [Tellor Security 201](https://tellor.io/tellor-security-201/) - Introduction The Tellor oracle is a decentralized network of miners dedicated to providing data to the Ethereum network. Having been live for over a year now, with several upgrades, Tellor has become quite the robust system, consistently driving towards decentralization and security. This article should give you a good understanding of the current crypto-economic guarantees
- [Play with Tellor: using our new integration sandbox](https://tellor.io/play-with-tellor-using-our-new-integration-sandbox/) - In an effort to open up accessibility for users to ‘play’ with Tellor, we’ve created Tellor Playground. This allows projects to interact with the Tellor protocol in its simplest form, focusing on components a user would only need to concern themselves with to incorporate Tellor into their smart contract and see if it’s a right
- [Tellor on Matic](https://tellor.io/tellor-on-matic/) - As Ethereum scales we see Layer 2 structures playing a key role along the way. And so we’ve sought to design a structure to not only benefit from the technical opportunities these options could have for an oracle, but to widen our reach in bringing censorship resistant oracles to more users. Our first step in
- [Subjectivity in Oracles](https://tellor.io/subjectivity-in-oracles/) - Subjectivity, Ambiguity, and Decentralized Oracles In an instant, hacks of financial protocols, or misunderstandings of the internal workings of a financial contract can lead to huge losses with often little recourse. Whether it’s traditional financial products that settled to LIBOR, traders who saw Crude go negative for the first time in history this year[1], or
- [2020 Year-In-Review](https://tellor.io/2020-year-in-review/) - For Tellor, 2020 was a banner year. Despite being the first full year in existence, we experienced a growth in the community and protocol that beat our best expectations! More importantly too, it was the year of staying true to the principles that define us and our purpose in the crypto space. From the beginning, Tellor
- [Introducing Chorus: a community currency protocol](https://tellor.io/introducing-chorus-a-community-currency-protocol/) - The Tellor team is excited to present Chorus, a community currency protocol. Chorus is being built to empower communities through customizable semi-stable coins that can be tailored to fit their specific needs. Throughout history, nations have used currency and monetary policy to further the unique goals of their economy. Chorus makes this toolkit available to
- [Tellor token v1](https://tellor.io/tellor-token-v1/) - “Change is not always growth, but growth is often rooted in change.” — Drizzt Do’Urden The Basics On February 15, 2021, the Tellor system experienced a major error while deploying the upgrade to v2.6.1. To allow a method for Tellor to upgrade without forking the entire system, we utilize a proxy contract that holds the
- [Q1 2021 Update](https://tellor.io/q1-2021-update/) - The first quarter of 2021 really battle tested the Tellor team and community. From developing and announcing an exciting new product, to forking our token due to a fatal bug, we’ve had quite the ride these last couple months. But it’s not the highs and the lows that define you, it’s what you do in
- [Liquity using Tellor](https://tellor.io/liquity-using-tellor/) - Liquity, an immutable and decentralized borrowing protocol, has integrated Tellor’s oracle into their system. When we set out to write our piece on oracle best practices, which presents concepts like “Assume your oracle can fail”, and “Know the cost to break,” we intended to set the tone for how we felt the oracle space would be
- [Coinbase Lists TRB](https://tellor.io/coinbase-lists-trb/) - We are excited to announce that starting Wednesday May 5, users can transfer Tellor Tributes, TRB, into Coinbase Pro accounts ahead of trading. Support for TRB will be available in all Coinbase’s supported jurisdictions. Trading will begin on or after 9AM Pacific Time (PT) Thursday May 6, if liquidity conditions are met. TRB-USD and TRB-BTC
- [Tellor3 Upgrade is Live!](https://tellor.io/tellor3-upgrade-is-live/) - This week we deployed a small but important update to the Tellor contracts and we’d like to highlight the key points for you here. First, a bit of technical context about Tellor’s smart contract structure: Tellor uses proxy contracts and delegate calls. What this means is that we have a main contract (Tellor Master) that
- [Tellor X Whitepaper Released](https://tellor.io/tellor-x-whitepaper-released/) - Today marks a special day for the Tellor team and our community. We have released the whitepaper for a major overhaul of our oracle protocol — Tellor X. Tellor has been live on Ethereum for nearly 2 years now and it’s been a long road establishing ourselves as a major competitor in the oracle space. Tellor
- [Q2 2021 Review](https://tellor.io/q2-2021-review/) - Hi Tellor Community, hope you are enjoying the summer wherever you are! Over the past quarter the Tellor team has been busy at work completing major initiatives including being listed on two major exchanges and releasing the whitepaper on the game-changing updates to our oracle, nicknamed TellorX. The Next Gen Oracle Announced The biggest news
- [Moving from Admin Key to DAO — Tellor’s Parachute Smart Contract](https://tellor.io/moving-from-admin-key-to-dao-tellors-parachute-smart-contract/) - Most blockchain projects have some sort of centralized control (admin key) that allows a developer or founding team to make decisions on the smart contracts underpinning their work. Many projects take steps to secure these admin keys, but still, the admin key yields a large amount of power to the hands of very few. Decisions
- [TellorX Goes to External Audit](https://tellor.io/tellorx-goes-to-external-audit/) - The team has sent the code for TellorX to audit, a major milestone for launching the newest version of the decentralized oracle. Since the initial mainnet release of Tellor, we continue to work towards building an unstoppable oracle. An oracle that’s censorship resistant, as decentralized as possible, and above all has clean well-functioning code. Tellor
- [Decentralization... How Tellor does it.](https://tellor.io/decentralization-how-tellor-does-it/) - TL;DR No ICO or Pre-mine Fair Distribution Permissionless Nodes Decentralized Governance Transparency From inception Tellor has prioritized being as decentralized as possible. But this concept of “decentralization” is pretty broad, and using the term as a slogan holds little weight without providing specific details. This blog post aims to concisely provide these details and
- [Don't just Speculate...Participate!](https://tellor.io/dont-just-speculate-participate/) - Introduction Let's go out on a metaphorical limb for a moment and make an assumption: Most people don’t get into cryptocurrency for the technology...did that limb hold? Of course it did! That limb was thiccc. It's virtually impossible to enter any crypto conversation without people openly fantasizing about making 100x gains. Even when crypto conversations
- [Ampleforth Using Tellor As Oracle - An Amplified Look](https://tellor.io/ampleforth-using-tellor-as-oracle-an-amplified-look/) - Introduction Tellor is pleased to be working with Ampleforth to provide price data into its smart contracts. For those that don’t know how Tellor works, we’re a decentralized oracle that uses a network of staked data reporters who compete to fetch off-chain data and place it on-chain. Ampleforth now uses Tellor to bring on two
- [Tellor Successfully Launches its Newest Blockchain Oracle on Ethereum](https://tellor.io/tellor-successfully-launches-its-newest-blockchain-oracle-on-ethereum/) - The release of TellorX is a major step in building out decentralized blockchain infrastructure. Tellor, a decentralized oracle network, is excited to announce the release of our latest upgrade. After almost a year of planning, designing and building what has been nicknamed TellorX, the community has passed the vote and the team successfully released the
- [Tellor Year In Review - 2021](https://tellor.io/tellor-year-in-review-2021/) - Introduction From the lows of having to fork the entire protocol, to the highs of a Coinbase listing, key integrations, and a huge upgrade launch, 2021 proved to be quite a roller coaster of emotion, for a young startup like Tellor. Young...in human years of course. But in crypto years? An aged fine wine at

## Pages

- [Home](https://tellor.io/) - The Source of Decentralized Data Tellor is the oracle layer for secure, censorship-resistant data creation and distribution. Built to be the source of truth, not just middleware, it is unlike any other data provider in the industry. Whitepaper Documentation Data That's Different. Data Without Dependency Centralization Independent Data Unlike traditional oracles that are middleware between
- [About the Team](https://tellor.io/about-the-team/) - The core Tellor team got into crypto because it promised to change the world and we wanted to be a part of it. Our goal was to create DeFi products.
- [TRB, the Tellor Token](https://tellor.io/more-about-trb/) - TRB is the Tellor token, used to align incentives between users, data reporters, and the community of holders. It is used for rewards, security, and governance
- [whitepaper](https://tellor.io/whitepaper/) - We believe a "whitepaper" should be easy to read and simply help you understand how the project works. We hope the following information provides exactly that
- [Blog](https://tellor.io/blog/) - The tellor blog is a library of resources, including dives into the architecture of the oracle itself, updates, and real time commentary on the world of crypto.
- [QueryIDStation](https://tellor.io/queryidstation/) - A query ID is the unique identifier of a Query, the specification for a type of data that's requested from, reported to, and retrieved from Tellor oracles.
- [Using Tellor](https://tellor.io/using-tellor/) - Built for any data type, our network of reporters supports literally everything. If your data can be verified, Tellor can bring it on-chain.
- [Resource Library](https://tellor.io/resource-library/) - Understanding decentralized oracles and their place in the world can be a daunting task, especially for those new to building decentralized products.
- [Data Feed](https://tellor.io/data-feed/) - The Tellor Data Feed shows the protocol at work, specifically what data types have actively been reported
- [Docs](https://tellor.io/docs/) - Tellor docs serves as the main hub for all Tellor documentation. You'll be able to find all you need to know in one of the following sections
- [Report Data for Tellor](https://tellor.io/report-data-for-tellor/) - Reporting is how Tellor provides requested data. For any oracle protocol to truly be decentralized, the data submission and validation must be permissionless.
- [Text Styling](https://tellor.io/text-styling/) - H1: We put data on blockchains. Any data. Smart contracts have their own unique data needs – these needs will only broaden as our industry grows. That is why we built Tellor to be able to answer any data request and put that data on-chain, on demand. Smart contracts have their own unique data needs

## Categories

- [Uncategorized](https://tellor.io/category/uncategorized/)
- [Quarterly & Year End Reviews](https://tellor.io/category/reviews/)
- [Community Updates](https://tellor.io/category/communityupdates/)
- [Tellor Updates](https://tellor.io/category/tellorupdates/)
- [Thought Leadership](https://tellor.io/category/thoughtleadership/)
- [Integrations](https://tellor.io/category/integrations/)
- [Tellor Info](https://tellor.io/category/tellor_info/)
- [New Feature](https://tellor.io/category/new-feature/)
- [Guides](https://tellor.io/category/guides/)
- [Deep Dive](https://tellor.io/category/deep-dive/)

## Tags

- [New Feature](https://tellor.io/tag/new-feature/)
- [guide](https://tellor.io/tag/guide/)
- [mainnet](https://tellor.io/tag/mainnet/)