smartcontractkit/chainlink

Features

• Decentralized Oracle Networks - Connects smart contracts to off-chain data and computation through a network of independent node operators that reach consensus on data validity.
• Oracle-Powered DeFi Infrastructure - Powers DeFi protocols with reliable price feeds, automation, and cross-chain capabilities for lending, trading, and settlement.
• Market Data Feeds - Delivers tamper-resistant price data for crypto, commodities, and forex to smart contracts via a decentralized oracle network.
• Tamper-Proof - Delivers cryptographically signed, redundantly validated market data from multiple independent nodes to secure DeFi applications.
• Automated On-Chain Data Deliveries - Automates delivery of critical financial data onto blockchains on a schedule or in response to events.
• Decentralized Price Feed Accesses - Aggregates premium data through Sybil-resistant oracles to deliver verified price values on-chain.
• Tamper-Proof Real-Time Prices - Delivers accurate, tamper-resistant on-chain pricing for fiat, crypto, and equities to maintain stablecoin pegs and trigger liquidations.
• Proof of Reserve Verifications - Ships automated proof-of-reserve verification to confirm tokenized assets are fully collateralized.
• Token and Message Transfers - Combines token transfers with arbitrary messages in one atomic cross-chain transaction.
• Decentralized Price Feed Aggregations - Combines data from multiple independent oracle nodes into a single on-chain price reference for crypto assets.
• Transaction Record Maintenance - Maintains a complete, immutable historical record of all network transactions for verifiable audit trails.
• Off-Chain Data Integration Layers - Connects oracle nodes to custom off-chain APIs and computations through a REST interface for specialized data integration.
• Off-Chain Reporting Protocols - Implements an off-chain reporting protocol that aggregates oracle responses using threshold signatures to reduce gas costs.
• Collateral Proof Protocols - Provides on-chain proof of off-chain or cross-chain collateral, enabling independent audits to prevent overissuance.
• Reserve Attestation Protocols - Pulls reserve data from custodians or APIs into oracle networks to attest that tokenized assets are fully backed.
• Reserve Verification Protocols - Relays off-chain collateralization data on-chain through a decentralized verification network to prove reserves are sufficient.
• Tamper-Proof Data Delivery - Delivers tamper-resistant data from external sources to on-chain smart contracts via decentralized oracle networks.
• On-Chain Data Feed Publishing - Publishes tamper-resistant, low-latency data from off-chain sources onto a blockchain for smart contract consumption.
• On-Chain Price Feed Readings - Reads the latest value of a cryptocurrency price feed on-chain and stores it in a smart contract for later use.
• Cross-Chain Asset Migration - Moves digital assets between different blockchains through a single secure standard.
• On-Chain Reference Contracts - Stores latest and historical asset prices in smart contract reference contracts, updated automatically by independent node operators.
• Collateralization Verifiers - Fetches real-time reserve data from off-chain or cross-chain sources so smart contracts can autonomously audit asset backing.
• Oracle-Based Data Synchronization - Bridges real-world data from APIs and price feeds onto blockchains through decentralized oracle networks.
• Oracle-Based Market Data Retrievals - Retrieves accurate, real-world price data from decentralized oracle networks to power DeFi lending and trading applications.
• Modular Oracle Frameworks - Ships a modular oracle infrastructure that adapts to evolving blockchain standards and regulatory requirements.
• Staking and Slashing Mechanisms - Uses a staking-based security model where LINK tokens are locked as collateral and slashed for poor oracle performance.
• Oracle Node Slashing - Penalizes node operators by removing a portion of their staked LINK when valid alert conditions are met.
• Oracle Service Staking - Provides a staking protocol where LINK tokens are locked to back oracle service performance and secure the network.
• Collateral-Backed Minting Triggers - Automatically halts or allows token minting based on real-time reserve collateral thresholds verified by oracle data.
• Off-Chain Collateral Verifications - Relays collateralization data from external accounts or vaults onto a blockchain to prove tokens are fully backed.
• Stablecoin Collateral Verifications - Provides on-chain verification that stablecoins are fully backed by collateral using oracle data feeds.
• External Data-Driven - Delivers external data to on-chain smart contracts via decentralized oracle networks for powering transactions.
• Reserve-Backed Minting - Requires reserves to equal or exceed supply before minting, providing cryptographic guarantees against over-minting.
• Undercollateralization Halts - Blocks new token minting when total supply exceeds available reserves, preventing infinite mint attacks.
• Atomic Delivery-versus-Payment - Enables atomic cross-chain delivery-versus-payment settlement through its interoperability protocol.
• External Adapter Frameworks - Provides an external adapter framework that connects oracle nodes to custom off-chain APIs via REST.
• Protocol Function Automations - Triggers core protocol functions like liquidations and interest accrual with reliable real-time automation.
• Smart Contract Deployment Tools - Provides tools for compiling Solidity and deploying bytecode to EVM-compatible chains.
• Cross-Chain Workflow Orchestrations - Provides a unified integration layer for orchestrating smart contract workflows across multiple blockchains.
• Oracle Node Operations - Operates decentralized oracle nodes that fetch and deliver off-chain data to smart contracts.
• Blockchain-Agnostic Deployments - Provides a blockchain-agnostic design that deploys on any new blockchain an institution needs to connect.
• Fair Transaction Orderers - Ships a fair transaction sequencing service that orders transactions off-chain to prevent frontrunning and MEV.
• Cross-Chain Bridges - Transfers data and value between different blockchains using a standardized protocol.
• Atomic Settlement Protocols - Executes atomic delivery-versus-payment and payment-versus-payment across blockchains.
• Atomic Swap Protocols - Provides atomic cross-chain swap execution that reverts entirely if conditions are not met.
• Native Token Transfers - Ships a standardized protocol for moving tokens natively between blockchains without per-chain adapters.
• Secure Token Bridges - Provides a secure cross-chain token bridging protocol with independent risk monitoring and oracle computation.
• Cross-Chain Interoperability Protocols - Ships a unified cross-chain messaging protocol for transferring tokens and data securely between different blockchain networks.
• Application Development - Provides a unified messaging protocol for moving assets, messages, and application state securely across blockchains.
• Cross-Chain Messaging Protocols - Ships a cross-chain messaging protocol for transferring tokens, messages, and data between blockchains.
• Decentralized Financial Systems - Recreates traditional financial services like lending and trading using permissionless smart contracts and oracle infrastructure.
• External API Data Fetching - Fetches data from any external API and runs serverless compute to bring off-chain information on-chain.
• Smart Contract Development Frameworks - Provides comprehensive tooling for writing, testing, and deploying smart contracts on blockchain networks.
• Orchestration Layers - Provides an all-in-one orchestration layer for managing and coordinating complex institutional-grade smart contract workflows.
• Fair Transaction Sequencers - Provides a fair transaction sequencing service that orders transactions to prevent frontrunning and MEV manipulation.
• Blockchain Transaction Sequencers - Implements a FIFO transaction sequencing policy that orders transactions based on when they are received by the oracle network.
• On-chain Randomness Generators - Produces tamper-proof random numbers inside smart contracts using cryptographic proofs verified before consumption.
• Randomness Verifications - Verifies each random result against its cryptographic proof on-chain so consuming contracts only receive validated values.
• Verifiable Random Functions - Generates cryptographically provable random numbers off-chain that smart contracts verify on-chain for tamper-proof randomness.
• Randomness Requests - Requests cryptographically provable random numbers from a decentralized oracle network for smart contract use.
• Reserve-Backed - Provides on-chain verification that tokenized assets are fully backed by real-world reserves via decentralized oracles.
• Proof of Reserve Oracles - Automatically checks off-chain or cross-chain collateral against on-chain supply using oracle networks to prevent overissuance.
• Verifiable Reserve Publishing - Writes immutable, real-time reserve proofs on-chain so users and regulators can independently confirm asset backing.
• Verifiable Off-Chain Computations - Performs verifiable off-chain computations like random number generation and transaction sequencing to augment on-chain logic.
• Data Origin Authentications - Uses cryptographic proofs to confirm that data originated from a trusted source before it reaches a smart contract.
• Oracle Data Fetchers - Delivers external data like asset prices and interest rates onto blockchains through decentralized oracle networks.
• Aggregated Oracle Data Readings - Provides gas-free reading of pre-aggregated oracle data already committed on-chain via view functions.
• Data Reporting Incentivizations - Uses staking and reputation systems to financially reward honest oracle data reporting and penalize dishonest ones.
• Sybil-Resistant Node Operations - Uses decentralized, Sybil-resistant node operators to eliminate single points of failure in oracle networks.
• Decentralized Application Development - Builds decentralized applications that integrate blockchain functionality for use cases like artist payments or crypto wallets.
• Smart Contract - Bridges off-chain data to smart contracts via oracle networks for real-world input-driven execution.
• Interchain Token Transfers - Provides a cross-chain messaging protocol that transfers tokens securely between blockchains using burn/mint and lock/unlock mechanisms.
• Hybrid Smart Contract Architectures - Combines on-chain infrastructure with off-chain processing to create feature-rich hybrid smart contracts.
• Self-Executing Agreements - Provides a decentralized automation network that triggers smart contract execution when predefined conditions are met.
• Smart Contract Automations - Provides a decentralized automation service that triggers smart contract execution based on predefined conditions.
• Real World Asset Tokenization - Converts physical or financial assets like real estate and commodities into onchain digital tokens for trading and ownership.
• Reserve Auditing - Provides on-chain verification that tokenized assets are fully backed by real-world reserves.
• Condition-Based On-Chain Monitors - Checks contract state off-chain every block and initiates transactions only when specified criteria become true.
• Event-Triggered On-Chain Actions - Watches for specific smart contract log events and automatically initiates upkeep transactions in response.
• Event-Triggered On-Chain Workflows - Triggers smart-contract actions such as settlements or liquidations based on predefined off-chain events or schedules.
• Smart Contract-to-API Bridges - Ships a core bridging layer that connects on-chain smart contracts to any external API or computation source.
• Consensus-Based Data Writing - Writes computed results to blockchains via decentralized oracle networks that reach consensus on data validity.
• Smart Contract Web Access - Fetches external data from APIs and real-world sources onto blockchains for smart contract consumption.
• Blockchain Provider Abstractions - Provides a blockchain abstraction layer so users interact with a single platform and currency.
• Gas Cost Optimizers - Ships gas-efficient automation and off-chain execution to reduce on-chain transaction costs.
• Enriched Market Data Streams - Streams market data enriched with metadata like market status and staleness indicators for on-chain applications.
• Reserve Verifications - Provides automated, tamper-proof monitoring of off-chain gold reserves so users can independently confirm tokenized gold is fully backed.
• High-Frequency Market Data Streamings - Streams low-latency market data feeds for ultra-fast derivatives and trading applications on-chain.
• High-Throughput Market Data Accesses - Delivers low-latency market data on-chain for latency-sensitive DeFi markets like perpetuals and options.
• Low-Latency Market Data Integrations - Integrates signed, low-latency market data from streaming oracles into on-chain transactions for time-sensitive DeFi operations.
• Sub-Second Market Data Deliveries - Delivers market data on-chain with sub-second latency using globally distributed infrastructure.
• Smart Contract Compliance Enforcements - Applies custom compliance rules and privacy features to meet regulatory requirements across smart contract workflows.
• Blockchain Data Monetizations - Enables traditional data providers to sell their API data directly to smart contracts through the oracle network.
• Corporate Actions Automation - Automates corporate actions by validating AI outputs, formatting to ISO 20022, and distributing records across blockchains.
• Digital Transfer Agent Operations - Enables fund distributors and transfer agents to manage tokenized assets onchain with real-time traceability.
• Traditional Finance Integrations - Integrates traditional financial systems with any public or private blockchain through a single interface.
• On-Chain Financial Workflow Automations - Automates complex financial workflows using programmable smart contract logic to reduce settlement times and costs.
• Deployment Acceleration - Integrates existing financial infrastructure with onchain systems to accelerate deployment of blockchain-based financial products.
• Asset Valuation Sourcings - Retrieves asset pricing data from professional providers and exchanges through a decentralized oracle network.
• Multi-Chain Token Management - Onboards, lists, and controls tokens on multiple blockchains without redeploying contracts or splitting liquidity.
• Post-Trade Process Automation - Reduces settlement delays and reconciliation errors by automating post-trade workflows on blockchain.
• Volume-Weighted Average Price Retrievals - Retrieves volume-weighted average prices via decentralized oracle networks for accurate asset pricing.
• Traditional Asset Prices - Provides real-time pricing for U.S. equities, ETFs, FX pairs, and commodities streamed on-chain.
• Financial Data Attachments - Attaches financial data to tokens and automates updates to improve investor transparency and reduce manual effort.
• Fractionalization Mechanisms - Splits high-value assets into smaller digital tokens to broaden investor participation and improve liquidity.
• Compliance-Enforced Transaction Automations - Automates trades and regulatory checks via smart contracts, cutting administrative overhead and intermediary costs.
• Cross-Chain Record Synchronization - Keeps a consistent real-time view of asset metadata like NAV and holdings as assets move across chains.
• Custom Data Stream Configurations - Allows users to define custom data stream formats, cadence, and fields for blockchain protocol logic.
• Custom Datafeed Creations - Creates custom on-chain datafeeds for financial data like Net Asset Value and Proof of Reserve.
• Liquid Staking Token Price Feeds - Publishes accurate, tamper-resistant price data for liquid staking tokens so DeFi protocols can accept them as collateral.
• Volatility Data Feeds - Delivers realized volatility data through oracle networks for configuring DeFi risk parameters.
• Digital Token Issuance - Issues and manages ownership rights for tokens with programmable features like utility, governance, or asset claims.
• Liquid Staking Protocols - Mints tradable receipt tokens representing claims on staked assets, enabling their use as collateral in other protocols.
• Backing Verifications - Provides on-chain data to confirm that liquid staking tokens are fully backed by staked native assets.
• Restaking Protocols - Reuses staked tokens to secure third-party protocols in exchange for additional yield through restaking mechanisms.
• Liquidity Indicators - Provides liquidity-weighted bid/ask quote prices and benchmark data for on-chain risk management.
• Liquidity Pool Staking - Provides a shared staking pool where users deposit tokens to run validators and distribute rewards proportionally.
• Institutional Liquidity Access - Connects institutional systems to decentralized liquidity pools for broader capital access in onchain finance.
• Market Availability Indicators - Uses built-in signals to distinguish between active trading hours and offline periods for accurate on-chain behavior.
• Price Risk Indicators - Constructs confidence intervals from price dispersion data to measure consensus among market participants.
• Market Data Staleness Detections - Detects stale or out-of-hours market data to maintain accurate on-chain behavior reflecting traditional market conditions.
• Institutional Data Publishing - Publishes high-quality institutional market data directly onto blockchain networks through oracle infrastructure.
• On-Chain Market Data Publishing - Delivers verifiable bid, ask, and last traded prices for regulated securities directly onto blockchains for DeFi protocols.
• Reserve Monitors - Monitors reserves held on other blockchains or off-chain to prevent overissuance of tokenized assets.
• Token Swaps - Exchanges crypto assets between parties on different blockchains using time-bound smart contracts.
• On-Chain Risk Rating Ingestion - Pulls real-time stablecoin stability assessments from S&P Global onto the blockchain for automated protocol decisions.
• Oracle Network Data Monetizations - Allows data providers to sell their existing API data to smart contracts through the decentralized oracle network.
• Staking-Based Service Agreements - Defines staking-based service agreements for tailored oracle services with specific data sources and reputation thresholds.
• Proof-of-Stake Delegation - Automatically assigns community staked LINK to node operators proportionally for delegation rewards.
• Burn Verification Attestations - Adds third-party verifiers to confirm burn or lock events before minting tokens on the destination chain.
• Asset Data Synchronization - Keeps tokenized assets updated with real-time valuations and compliance data as they move between blockchains.
• Oracle-Based Valuation Updates - Updates on-chain asset valuations by fetching market rates and appraisals through oracle networks.
• Settlements - Enables atomic settlement of tokenized assets across public and private blockchains for delivery-versus-payment transactions.
• Metadata Updates - Updates NFT metadata automatically when predefined on-chain or off-chain conditions are met.
• Supply Tracking - Provides on-chain token supply tracking via decentralized oracle networks for real-time circulating supply data.
• SDK-Based - Writes and simulates workflows using TypeScript or Go SDKs to orchestrate APIs, smart contracts, and off-chain computation.
• Abstraction Gateways - Provides an enterprise abstraction layer that lets institutions interact with any blockchain from existing backend systems.
• High Availability Infrastructure - Achieves high availability with tamper-resistant architecture designed for high-frequency onchain execution.
• Cross-Chain Transfer Rate Limiters - Monitors infrastructure for anomalies and enforces rate limiting to protect blockchain bridges and token transfers.
• Off-Chain Transaction Processing - Implements off-chain transaction processing to scale throughput and reduce fees while maintaining base chain security.
• Validity Proof Rollups - Batches thousands of off-chain transactions and posts a single validity proof to increase throughput and reduce costs.
• On-Chain Recurring Job Registrations - Deploys automation-compatible contracts and registers them on a decentralized network to run tasks repeatedly.
• Zero-Knowledge Rollups - Provides a zero-knowledge rollup solution for deploying Ethereum dApps with increased throughput and reduced costs.
• Blockchain Games - Executes in-game actions and distributes rewards using tamper-proof smart contracts and verifiable randomness.
• Hybrid Asset Settlements - Orchestrates atomic or hybrid settlement of tokenized assets and fiat payments across blockchains.
• Bitcoin Asset Bridges - Transfers Bitcoin-based assets securely between different blockchain networks.
• Collateral Reserve Verifications - Verifies that tokenized or wrapped Bitcoin assets are fully collateralized by checking on-chain reserves in real time.
• Collateral Monitors - Checks wrapped assets in cross-chain bridges against reserve feeds and triggers emergency actions if undercollateralization is detected.
• External Validators - Uses a separate set of validator nodes to verify source chain state and relay transactions with trust-minimized guarantees.
• Peer-to-Peer Validators - Relies on counterparties to verify each other's state, enabling peer-to-peer atomic swaps with high trust-minimization.
• Liquidity Routings - Aggregates liquidity conditions and token balances from multiple blockchains for efficient swaps.
• Rate Limiters - Implements configurable rate limits on cross-chain token transfers to protect against exploits and manage risk.
• Risk Management Networks - Monitors and verifies the primary network's behavior through a separate Risk Management Network for added security.
• Stablecoin Bridgings - Connects stablecoins across private and public blockchains and traditional finance rails.
• Transaction Validators - Operates a separate Risk Management Network that independently verifies all cross-chain transactions for security and correctness.
• Institutional Cross-Chain Transactions - Provides private, verifiable cross-chain transactions that protect financial data and meet regulatory standards.
• Transfer Monitors - Provides a Risk Management Network with transaction-level monitoring, incident response, and analytics for cross-chain transfers.
• Arbitrary Data Deliveries - Delivers arbitrary data payloads across blockchains through a secure messaging protocol.
• Multi-Chain Application Compositions - Composes token transfers and arbitrary messaging with other oracle services for multi-chain applications.
• Liquidity Aggregators - Connects isolated on-chain markets to enable seamless flow of tokenized assets across different blockchain networks.
• Multi-Chain Protocol Deployments - Enables launching protocols across multiple chains through a single integration point for data, compute, and interoperability.
• Independent Validators - Validates cross-chain transactions through a secondary, independent network of nodes to enhance security.
• Blockchain Integration - Links existing infrastructure, custody providers, and key management solutions to blockchains without replacing them.
• Serverless API Data Fetching - Provides a serverless platform for smart contracts to fetch external API data and trigger NFT updates.
• Hash Timelock Escrows - Protects deposited tokens in cryptographic escrows that release funds only when both parties submit proofs within a time limit.
• Private On-Chain Computation - Executes smart contracts inside trusted execution environments to keep transaction data confidential on any blockchain.
• Institutional Smart Contract Development - Ships tooling and orchestration for building compliant, private, and interoperable smart contracts for enterprise use.
• Wrapped Token Undercollateralization Halts - Pauses wrapped token operations when Proof of Reserve detects insufficient backing to prevent overissuance.
• Pool-Free Transfers - Uses burn-and-mint mechanisms to move tokens across chains, eliminating the need for pooled liquidity.
• Reduced Validator Sets - Employs a reduced validator set for off-chain processing, secured by on-chain proofs instead of full consensus.
• Custom Off-Chain Compute Executions - Runs custom JavaScript code off-chain to transform and aggregate data before delivering it on-chain.
• Off-Chain Compute with On-Chain Deliveries - Executes custom off-chain compute, queries APIs, and delivers results on-chain in a single transaction.
• Transaction Batching - Groups multiple transactions into a single submission to distribute on-chain fees across many operations.
• Compliance Rule Enforcement - Applies identity checks, policy rules, and reporting workflows to digital assets using modular compliance services.
• Cross-Chain Compliance Enforcements - Applies programmable compliance rules to smart contract interactions across different blockchain networks.
• Cross-Chain Policy Enforcements - Applies customizable rules to cross-chain transactions to meet regulatory and organizational requirements.
• Pre-Settlement Compliance - Applies identity data and existing compliance rules to tokenized assets and applications before settlement.
• Tokenized Asset Compliance - Embeds regulatory and internal compliance rules directly into tokenized assets to meet requirements automatically.
• Zero-Knowledge Rollups - Runs Ethereum-compatible smart contracts inside a zero-knowledge rollup for scalable, verified execution.
• Confidential Smart Contracts - Keeps proprietary data, business logic, external connectivity, and computation fully confidential within smart contracts.
• Validity Proofs - Submits cryptographic validity proofs to confirm layer-2 transaction correctness without re-execution.
• Cryptographic Execution Proofs - Uses cryptographic signatures, fault proofs, or validity proofs to resolve disputes and finalize state changes on the underlying blockchain.
• Oracle Network Workflow Verifications - Executes workflows across decentralized oracle networks with cryptographic proof that every step occurred as defined.
• Confidential Computations - Keeps sensitive data confidential during off-chain computation using zero-knowledge proofs or trusted hardware.
• Custom Oracle Workflow Deployments - Deploys and runs custom oracle-powered workflows on a unified runtime for cross-environment execution.
• Oracle MEV Recaptures - Recaptures oracle-related maximal extractable value from data feed usage to generate new protocol revenue.
• Privacy-Preserving Transactions - Uses trusted execution environments and zero-knowledge proofs to keep transaction details confidential on-chain.
• Layer-2 Finality - Ships a layer-2 scaling solution that achieves fast finality through validity proofs on the base chain.
• Trusted Execution Environments - Executes smart contract logic inside hardware enclaves to keep transaction data confidential during off-chain computation.
• Oracle Data Signatures - Digitally signs every data point from oracle nodes and stores it on-chain for verifiable data pipeline integrity.
• DeFi - Automatically applies protocol protections like freezing assets when a collateralization anomaly is detected.
• Programmable Transfers - Enables token transfers that carry data payloads to trigger smart contract actions on the destination chain.
• State Change Batching - Reduces gas fees by posting only final state changes on-chain instead of full transaction data.
• Lifecycle Management - Manages subscription, redemption, and servicing of tokenized assets onchain with real-time traceability and compliance.
• Commodity Tokenization - Mints digital tokens representing ownership of physical gold bullion stored in a vault for fractionalized ownership.
• Off-Chain Data Enrichment - Feeds real-world information such as prices and corporate actions onto any blockchain where the token resides.
• Token Enrichment - Attaches enriched data and embedded security to tokenized real-world assets to unlock their onchain utility.
• Verifiable - Triggers verifiable workflows onchain and offchain using authenticated data from decentralized oracle networks.
• Authenticated Data Retrievals - Retrieves data from authenticated sources with multi-node validation to eliminate single points of failure.
• Cross-Chain Contract Calls - Triggers smart contract functions on a destination blockchain from a source chain.
• Data Marketplaces - Operates a data marketplace where smart contracts can purchase and consume external API data through the oracle network.
• Smart Contract-to-External Action Triggers - Enables smart contracts to trigger actions in external off-chain systems like payment networks and IoT devices.

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