البنية التحتية للشبكة

إن Alloy هي مجموعة من المكتبات التي توفر أنواعًا وتطبيقات عميل RPC لإيثيريوم.

قواعد بيانات من نظير إلى نظير (Peer-to-Peer) للويب اللامركزي

إن ⁦go-libp2p⁩ هو تطبيق ⁦Go⁩ الأساسي لـ ⁦libp2p⁩، حيث يقوم بتعبئة وحدات النقل، وتحديد الهوية، و⁦DHT⁩، و⁦GossipSub⁩ التي تعتمد عليها ⁦Prysm⁩ و⁦Lotus⁩ و⁦Celestia⁩ والعملاء الآخرون على نطاق واسع الذين يحتاجون إلى اكتشاف النظراء والمراسلة على مستوى الإنتاج.

إن ⁦js-libp2p⁩ هو تطبيق ⁦JavaScript⁩ لعمليات نقل ⁦libp2p⁩، والأمان، و⁦pubsub⁩، والاكتشاف - والذي تستخدمه مراكز ⁦Farcaster⁩، والأدوات المتعلقة بـ ⁦Lodestar⁩، ومكدسات التنسيق الأخرى خارج السلسلة.

يقع eRPC أمام مزودي RPC الخاصين بك لإضافة التخزين المؤقت، وتجاوز الفشل، والتوجيه المضبوط لأعباء العمل الثقيلة القراءة مثل لوحات المعلومات، والمفهرسات، والواجهات الخلفية متعددة المستأجرين.

عقدة إيثيريوم مبنية للعمل في المتصفح، و ⁦Bun⁩، و ⁦Deno⁩، و Node.js

1RPC from Automata Network is a privacy-preserving public RPC endpoint for Ethereum and other EVM chains. Builders point an application at it when request metadata should not be tied back to users.

إن Alchemy هي منصة مطورين لبناء تطبيقات إيثيريوم وEVM مع البنية التحتية للعقدة، وواجهات برمجة التطبيقات (APIs)، وحزم تطوير البرمجيات (SDKs).

All That Node is a multi-chain node-as-a-service platform offering shared and dedicated Ethereum RPC nodes. Builders sign up for an endpoint instead of running their own node.

Ankr offers free public and paid RPC endpoints across many chains. Builders point applications at Ankr for hosted chain access without operating their own nodes.

Blockdaemon runs enterprise node infrastructure together with staking systems and RPC APIs. Infrastructure teams use it when node operation and staking are outsourced under an enterprise agreement.

BlockPI Network is a hosted RPC service for Ethereum and more than 70 other chains, with shared and dedicated node tiers. Builders use it for chain access without operating infrastructure.

Chainnodes provides RPC and node infrastructure for Ethereum and the major layer 2 networks, including archival endpoints. Builders buy endpoints there when an application needs historical state as well as current data.

Chainstack provides managed node and RPC infrastructure with global request routing. Builders use it when an application needs dedicated nodes and endpoints served close to its users.

dRPC is a hosted RPC service that spreads JSON-RPC, WebSocket, and REST traffic across independent node providers on Ethereum, its L2s, and 200+ other networks. It covers archive data, MEV-protected transaction endpoints, per-key rate limits, and usage dashboards, so reach for it when you want managed endpoints with provider redundancy instead of running nodes yourself.

A terminal UI that searches 1000+ EVM chains, latency-tests their public RPC endpoints, and exports the winner as ETHRPCURL for Foundry and Hardhat commands. It also manages your own private endpoints with encrypted storage and per-project favorites, so reach for it when you switch chains often and are tired of pasting RPC URLs.

Flashbots Protect is an RPC endpoint that keeps transactions out of the public mempool and returns MEV refunds. Wallet and application builders point users at it to reduce frontrunning on their transactions.

GetBlock gives hosted access to nodes on many chains through RPC endpoints. Builders connect applications to it for chain access without running their own infrastructure.

InfStones offers managed node infrastructure with RPC APIs, non-custodial staking, and node monitoring across many chains. Builders use it instead of operating their own nodes.

توفر ⁦Infura⁩ البنية التحتية لـ ⁦RPC⁩ لإيثيريوم و⁦EVM⁩ وواجهات برمجة التطبيقات (⁦APIs⁩) التي تستخدمها المحافظ والتطبيقات اللامركزية (⁦dapps⁩) للاتصال بسلسلة الكتل.

Kaleido is a hosted platform for running permissioned and public chain environments, including managed Ethereum nodes and tokenization services.

Lava Network is a decentralized RPC access layer that routes requests across independent node operators for Ethereum and more than 27 other chains. Builders route calls through it when access should not depend on one provider.

NodeCore is a self-hosted RPC load balancer in Go that sits in front of several blockchain API providers and scores upstreams on latency, error rate, and availability to pick one per request. It layers caching, request hedging, retries, per-method rate limiting, and quorum verification over JSON-RPC, WebSocket, and REST interfaces, so reach for it when you run your own RPC cluster and want failover across providers rather than a single endpoint.

NOWNodes is a node-as-a-service provider covering Ethereum and more than 125 other chains, with shared and dedicated nodes plus block explorers. Builders get an API key for hosted RPC across the chains they support.

OnFinality offers an RPC API and dedicated node hosting for Ethereum and more than 130 other networks, with indexing add-ons. Builders use it when one provider should cover both node access and indexed data.

Pocket Network, served through Grove, is a decentralized RPC relay network with an onchain incentive protocol. Builders use its endpoint network when they want chain access that does not depend on a single provider.

PublicNode from Allnodes serves free Ethereum RPC endpoints that need no API key. Builders use it for quick reads, scripts, and fallback endpoints.

QuickNode is a hosted RPC provider covering many chains, with an add-on marketplace and service level agreements. Builders subscribe when they want managed endpoints and extra infrastructure services instead of running nodes.

Tatum is a TypeScript SDK over its hosted RPC and blockchain APIs, covering wallets, transactions, tokens, and notifications. Builders install it when one package should cover both chain access and wallet operations.

Validation Cloud is an enterprise RPC node API for Ethereum and more than 50 protocols, alongside staking and analytics services. Builders pick it when they need support commitments and analytics with the endpoint.

Watchdata provides hosted blockchain APIs and RPC endpoints across several networks, including Ethereum mainnet and testnets. Builders use it as a hosted endpoint when they do not run their own node.

إن ⁦evm-rpcs-list⁩ هي حزمة ⁦npm⁩ صغيرة تُجمّع البيانات الوصفية للسلسلة ونقاط نهاية ⁦RPC⁩ العامة للعديد من شبكات ⁦EVM⁩ المستمدة من ⁦chainlist.org⁩ بحيث يمكن للنصوص البرمجية استيراد خريطة ⁦JSON⁩ واحدة بدلاً من ترميز نقاط النهاية بشكل ثابت.

Chainlist is a directory of EVM chain IDs and public RPC endpoints that developers and wallets use to add a network. The repository is the source of chainlist.org.

Checkpointz is a beacon-chain checkpoint sync provider from ethPandaOps. Node operators run one or point a consensus client at an existing instance to bootstrap a node in minutes instead of syncing from genesis.

ethereum-lists/chains is the canonical metadata list for EVM chains, covering chain ID, name, native currency, and RPC URLs. Builders pull chains.json from it to populate wallet and network configuration instead of hardcoding chain data.

Helios from a16z is a portable light client that serves verified Ethereum and other chain data without trusting an RPC provider. Builders run it or embed the Rust library when an application must check the data it receives.

enr is the Rust implementation of EIP-778 Ethereum Node Records, used by discv5 and the consensus and execution peer-to-peer stack. Rust builders add the crate to read and write node records.

Stereum هو مثبت يعتمد على واجهة المستخدم الرسومية لمزامنة عقد إيثيريوم وأوبتيميزم محليًا وكشف نقاط نهاية ⁦JSON-RPC⁩ و ⁦websocket⁩ الخاصة بك بمجرد تحديث الكتل.

Besu is a Java Ethereum execution client hosted by LF Decentralized Trust, formerly under Hyperledger, with wide enterprise use. Node operators run it when a deployment is standardized on the Java stack.

Ream is a Rust implementation of Ethereum's proposed Lean Consensus design. Client developers use it to experiment with the next consensus architecture, and it is not a production node client.

Teku is a Java Ethereum consensus client from Consensys that is favored by institutional operators. Validator and node operators run it when a deployment is standardized on the Java stack.

Erigon is an efficiency-focused Ethereum execution client that embeds the Caplin consensus layer. Infrastructure builders run it when they want one process for execution and consensus and fast access to historical state.

ethdo is a command line tool for beacon-chain and validator account management, covering keys, withdrawals, and exits. Validator operators use it for one-off account operations outside the client.

ethrex is a minimalist Ethereum execution client written in Rust by LambdaClass with growing adoption. Rust builders run it when they want a compact client codebase to operate or read.

Grandine is a multithreaded Ethereum consensus client written in Rust for high throughput. Node operators run it when they want to drive many validators from one process.

Lighthouse is an Ethereum consensus client written in Rust by Sigma Prime and one of the most used clients on the network. Validator and node operators run it to follow and attest to the beacon chain.

Lodestar is an Ethereum consensus client written in TypeScript by ChainSafe that adds client diversity in the JavaScript ecosystem. TypeScript infrastructure builders run it as a node or reuse its libraries.

Nethermind is an Ethereum execution client written in C# and .NET, and the second most used client on the network. Node operators and infrastructure builders run it to serve JSON-RPC and follow the chain.

Nimbus is a resource-efficient Ethereum consensus client written in Nim for low-power hardware. Validator operators run it on small machines where memory and CPU headroom are limited.

Prysm is an Ethereum consensus client written in Go by Prysmatic Labs and historically the most used client. Validator and node operators run it to take part in consensus.

Reth is a modular Ethereum execution client written in Rust by Paradigm. Rust builders run it as a node or extend its components to build custom infrastructure.

staking-deposit-cli generates validator keys and deposit data for Ethereum staking, and is now maintained as the EthStaker fork that the original owners point to. Validators run it once when setting up new keys.

nimbus-eth1 is an Ethereum execution client built for resource-restricted devices, from the team behind the Nimbus consensus client. Operators run it where memory and storage are tight, separately from nimbus-eth2 on the consensus side.

bloXroute is a blockchain distribution network offering low-latency mempool streaming and MEV bundle submission. Builders use it when a trading or infrastructure service needs pending transactions quickly and a path to submit bundles.

op-rbuilder is a block builder for OP Stack chains, adapted from rbuilder for rollup sequencer block production. Rollup teams run it as the builder behind their sequencer.

rollup-boost is a sidecar for OP Stack sequencers that adds MEV-Boost style external block building to a rollup. Sequencer operators run it when blocks should come from outside builders.

Commit-Boost is a validator sidecar that runs MEV-Boost together with other community-built commitment protocols. Validator operators run it instead of the plain sidecar when they want to take on commitments beyond block sourcing.

MEV-Boost is a validator sidecar that sources blocks from a competitive marketplace of builders and relays under proposer-builder separation. Validator operators run it alongside their consensus client to receive externally built blocks.

mev-boost-relay is the reference relay server for MEV-Boost proposer-builder separation, run by relay operators rather than validators. A team standing up its own relay runs this implementation.

rbuilder is a Rust MEV-Boost block builder that constructs blocks and submits them to relays. Teams that build blocks run it directly or fork it as the base for their own builder.

إن ⁦Ponder⁩ هو إطار عمل للفهرسة لتطبيقات الكريبتو مع التركيز على التحديث السريع وراحة المطورين عند تقديم بيانات سلسلة حديثة إلى النهاية الخلفية أو الواجهة الأمامية للمنتج.

إن ⁦rindexer⁩ هو إطار عمل مفهرس يركز على التطبيقات مع بيئة عمل GraphQL و⁦Postgres⁩ عندما تحتاج إلى مسارات موثوقة من السلسلة إلى واجهة برمجة التطبيقات (API) بدون الحاجة إلى أدوات ربط ⁦ETL⁩ مخصصة.

Allium is a managed data warehouse and API service for onchain data aimed at institutional use. Builders use it when they want onchain datasets delivered into their analytics stack rather than indexed in house.

Amberdata is a commercial digital asset data platform covering onchain, market, and DeFi datasets through APIs aimed at financial institutions. Builders call it when an application needs market and protocol data from one vendor.

Apibara builds streaming onchain data pipelines that handle chain reorganizations. Builders use it when a service consumes live chain data and must correct itself when blocks are reorged.

Bitquery serves decoded blockchain data across networks through GraphQL, Kafka, and gRPC interfaces. Builders use it when an application needs decoded transactions and events from several chains in one place.

Chainbase is a hosted multi-chain data warehouse with indexing APIs. Builders query it for chain data across networks without operating indexers.

Checkpoint from Snapshot Labs is a library for indexing Ethereum and Starknet contract events and serving them over GraphQL. Builders install it to turn their own contract events into a GraphQL API, separate from the Snapshot voting application.

Codex is a hosted API with a TypeScript SDK for real-time token prices, holder data, and market data. Builders install it when a trading or portfolio application needs live market data.

Covalent, delivered as GoldRush, is a unified REST API for historical onchain data across many chains. Builders call it when an application needs normalized balances, transfers, and history without writing a chain-specific indexer.

إن ⁦Envio⁩ هو إطار عمل فهرسة متعدد السلاسل بمعالجات ⁦TypeScript⁩ أو ⁦JavaScript⁩ أو ⁦ReScript⁩، يتزامن عبر ⁦HyperSync⁩ بدلاً من ⁦RPC⁩ عندما تحتاج إلى واجهة برمجة تطبيقات (⁦API⁩) واحدة لـ ⁦GraphQL⁩ مدعومة بـ ⁦Postgres⁩ عبر عدة سلاسل ⁦EVM⁩.

ethereum-etl is a Python tool that exports Ethereum data into files and data warehouses. Data builders run it to move blocks, transactions, and logs into their own analytics storage.

Firehose, in its firehose-ethereum form, is the flat-file block extraction layer that feeds Substreams. Its documentation addresses operators running a full indexing stack, since Substreams users can reach the same data through hosted endpoints.

Goldsky runs hosted subgraphs and streaming pipelines for onchain data. Builders use it when they want subgraphs and data streams operated for them rather than self-hosted.

mempool-dumpster continuously records observed mempool transactions into Parquet and CSV files for MEV and mempool research. Researchers pull the hosted dumps from Flashbots or run the Go collector against their own node.

Moralis offers web3 data APIs together with webhook-first event streams. Builders call its REST endpoints for wallet, token, NFT, and price data on Ethereum mainnet and subscribe to Streams webhooks for events.

Safe Transaction Service is the backend that indexes Safe multisig transactions and coordinates their collection of signatures. Safe integrations run or call it to track pending and executed multisig transactions.

Shovel is a configuration-driven tool that indexes EVM logs into PostgreSQL. Builders point it at contracts and tables when they want event data in their own database without writing indexer code.

Space and Time is a SQL data warehouse that produces proofs of its query results for onchain use. Builders query it when a contract or application must trust a computed result rather than a plain API response.

SubQuery is an open indexing SDK paired with a decentralized network of RPC and indexer operators. Builders define an indexer with it and serve the results as an API.

Subsquid, also called SQD, is a modular batch indexing SDK backed by distributed data archives. Builders use it to write custom indexers that read from archives instead of pulling every block from an RPC node.

Substreams is a parallelized streaming data engine for blockchain data built on Firehose. Data builders write Substreams modules when a pipeline needs to process large ranges of blocks in parallel.

The Graph is a decentralized indexing protocol where builders deploy subgraphs and query them over GraphQL. Builders use it to turn contract events into a queryable API without running their own indexer.

TrueBlocks, used through its chifra command, builds a local address-based index on top of an Ethereum node. Builders run it to index and query the full activity of an address from their own machine.

إن DefiLlama هي مجموعة تحليلات مفتوحة تشتهر بلوحات معلومات إجمالي القيمة المقفلة (TVL) الشفافة، ومُجمِّع وصفي لمنصات التداول اللامركزية (DEX)، وLlamaZip، وهو موجه مبادلة مضبوط للتجميعات المتفائلة يساعد المتداولين في العثور على مسارات فعالة عبر السيولة المجزأة.

إن ⁦Ethernal⁩ هو مستكشف كتل مفتوح المصدر يمكنك استضافته ذاتيًا لأي سلسلة ⁦EVM⁩، مع واجهات برمجة تطبيقات (⁦APIs⁩) وخطافات واجهة مستخدم (UI hooks) للصنابير، وعناصر واجهة مستخدم لمنصات التداول اللامركزية (⁦DEX⁩)، والمعالجة اللاحقة المخصصة، ومعارض الرموز غير القابلة للاستبدال (⁦NFT⁩)، وتدفقات التحقق.

إن ⁦Blockscout⁩ هو مستكشف كتل مفتوح المصدر وقابل للاستضافة الذاتية لشبكات ⁦EVM⁩، يوفر التحقق من العقود، وواجهات برمجة التطبيقات (⁦APIs⁩)، وأدوات المطورين للسلاسل والتجميعات.

إن Blobscan هو مستكشف وAPI لكتل بيانات EIP-4844 - فك التشفير، والتحليلات، ومخططات النشر التي تستهدف فرق التجميع التي تدير بنية تحتية قادرة على التعامل مع كتل البيانات.

Sourcify هي خدمة تحقق من العقود الذكية لامركزية ومفتوحة المصدر

إن ⁦growthepie.xyz⁩ هو موقع تحليلات لتجميعات إيثيريوم يعرض الأساسيات، واستخدام مساحة الكتلة، والاقتصاديات، ومقاييس توفر البيانات، ولوحات المعلومات على مستوى التطبيق.

مستكشف كتل إيثريوم محلي وسريع للغاية مبني على Erigon لسلاسل EVM

Artemis provides cross-chain fundamentals and metrics dashboards, with an API that serves the same data.

beaconcha.in is an open-source explorer for the Ethereum beacon chain and its validators. Staking and infrastructure builders use it to inspect validator performance and query beacon-chain data.

Blockaid is a closed-source security service that detects malicious activity and is integrated into many wallets and sites. Builders integrate it to simulate a transaction and warn a user before a harmful signature.

Dora the Explorer is a lightweight slot-by-slot explorer for the Ethereum beacon chain. Teams running a devnet or testnet deploy it to see consensus activity on their own network.

Dune is a community analytics platform where onchain data is queried with SQL and shared as dashboards. Builders write queries or call the API when they need protocol metrics and want to reuse work others have published.

إن ⁦Etherscan⁩ هو مستكشف كتل إيثيريوم ومنصة ⁦API⁩ للتحقق من العقود، وفحص المعاملات، والوصول إلى البيانات على السلسلة.

Forta is a decentralized network for runtime threat detection and anomaly monitoring. Builders write detection bots and run them on the network to get alerts about suspicious activity against their contracts.

إن ⁦Herd Explorer⁩ هو مستكشف إيثيريوم بمساعدة الذكاء الاصطناعي: ابحث في العقود والرموز المميزة، ثم اطلب من المساعد المدمج تفسيرات سريعة للوظائف، والأحداث، وكيفية اتصال الأجزاء ببعضها.

Hypernative is a hosted platform for real-time onchain threat detection and risk monitoring. Builders choose it when a protocol needs monitored alerts and automated responses to attacks.

Nansen provides onchain analytics with wallet labels and its Smart Money views of what labeled wallets are doing.

Pessimistic Spotter monitors deployed contracts for exploit patterns and raises alerts. Teams point it at their own contracts to catch an attack while it is still running.

relayscan monitors MEV-Boost relays and publishes data on bids, delivered payloads, and relay behavior. Block builders and researchers query its hosted JSON endpoints or run the command line tool against their own data.

Routescan is a multi-chain block explorer with an Etherscan-compatible API. Builders use it to verify contracts and query chain data on networks through the same API calls they already write for Etherscan.

Sentio is an observability platform combining a transaction debugger, simulation, indexing, metrics, and alerts. Builders use it to trace a failed call and then watch the same contract with dashboards and alerts.

Token Terminal publishes standardized financial metrics and dashboards for protocols, such as revenue, fees and active users.

xatu is network monitoring tooling with collection clients, called sentries, and a central server that pipelines consensus and execution telemetry. Node and infrastructure teams run it to gather telemetry from their own nodes.

مستكشف كتل ⁦4337⁩

إن ⁦NFTScan⁩ هو مستكشف ⁦NFT⁩ وواجهة برمجة تطبيقات (⁦API⁩) للبيانات يستخدمه المطورون للبحث في مجموعات ⁦NFT⁩، والملكية، وسجل المعاملات عبر إيثيريوم وشبكات ⁦EVM⁩ الأخرى.

L2BEAT publishes risk analysis, activity data and research on Ethereum layer 2 networks. Builders use it to compare rollups and check their security assumptions before choosing where to deploy.

إن Band Protocol هي منصة أوراكل بيانات عبر السلاسل تقوم بتجميع وربط بيانات العالم الحقيقي وواجهات برمجة التطبيقات (APIs) بالعقود الذكية.

توفر شبكات أوراكل تشين لينك اللامركزية مدخلات ومخرجات وحسابات مقاومة للتلاعب لدعم العقود الذكية المتقدمة على أي سلسلة كتل.

تتغلب Chronicle على القيود الحالية لنقل البيانات على السلسلة من خلال تطوير أوراكل قابلة للتطوير حقًا، وفعالة من حيث التكلفة، ولامركزية، وقابلة للتحقق.

DIA Oracles is an open-source oracle platform that delivers customizable price and data feeds for contracts to read onchain. Contract developers wire its feeds in instead of building their own oracle.

شبكة ⁦Pyth⁩ هي شبكة أوراكل مالية من الطرف الأول مصممة لنشر بيانات العالم الحقيقي المستمرة على السلسلة في بيئة مقاومة للتلاعب، ولامركزية، ومستدامة ذاتيًا.

إن ⁦RedStone⁩ هو أوراكل معياري لامركزي يوفر خلاصات بيانات محسنة للغاز. وهو متخصص في تقديم خلاصات الأسعار للأصول الناشئة، مثل رموز التخزين السائل (LSTs)، ورموز إعادة التخزين السائل (⁦LRTs⁩)، ومشتقات التخزين لـ بيتكوين.

يسمح أوراكل ⁦UMA⁩ المتفائل للعقود الذكية بتلقي أي نوع من البيانات بسرعة لتطبيقات مختلفة، بما في ذلك التأمين، والمشتقات المالية، وأسواق التنبؤ.

إن ⁦Witnet⁩ هو أوراكل لامركزي وغير مقيد بإذن ومقاوم للرقابة يساعد العقود الذكية على التفاعل مع أحداث العالم الحقيقي بضمانات اقتصادية قوية للكريبتو.

واجهة برمجة تطبيقات (API) واحدة للمبادلة والجسر والتحويل السريع (zap) عبر جميع سلاسل الكتل والبروتوكولات الرئيسية. قم بتمكين التداول عبر جميع مجمعات منصات التداول اللامركزية (DEX)، والجسور، والأنظمة القائمة على النوايا (intent-systems) ووفر مئات الساعات من وقت المطورين.

تبني ⁦Unruggable Labs⁩ بنية تحتية مفتوحة للتسمية بأسلوب ⁦ENS⁩ على التجميعات، بما في ذلك بوابات ⁦Unruggable⁩ التي تجلب إثباتات حالة التجميع وتتحقق منها على طبقة 1 (L1) لإيثيريوم بحيث يمكن للعملاء تحليل الأسماء بشكل منزوع الثقة مع توسع شبكات الطبقة الثانية (⁦L2s⁩).

The Across toolkit is an SDK for bridging and intent-based transfers through Across. Builders import it to fetch quotes, submit deposits, and move funds between chains from application code.

تتيح ⁦Decent⁩ عمليات التبديل عبر السلاسل والمعاملات بنقرة واحدة مع أي رمز عبر السلاسل.

Relay is a hosted service for cross-chain routing and transaction execution.

إن ⁦IPFS⁩ هو تخزين نظير موجه بالمحتوى للبيانات الوصفية للرموز غير القابلة للاستبدال (⁦NFT⁩)، وحمولات الحوكمة، والواجهات الأمامية للتطبيقات اللامركزية (⁦dapps⁩)، والأصول الأخرى التي تريدها خارج السلسلة ولكنها مرتبطة بشكل يمكن التحقق منه من إيثيريوم أو التجميعات.

Aleph Cloud is a decentralized cloud offering storage, virtual machines, and hosting that contracts and applications can reach as an off-chain data layer. Builders deploy onto it when application data and compute should not sit with a single hosting provider.

eth.limo is a gateway that serves ENS-named, IPFS-hosted frontends over ordinary HTTPS, such as yourname.eth.limo. Teams shipping an IPFS frontend point users at their eth.limo address so a normal browser can load it.

Irys, formerly Bundlr, is a JavaScript SDK for permanent and programmable data storage built on Arweave. Applications install it when data should be paid for once and kept indefinitely.

Pinata is an IPFS pinning and file upload service used to host NFT metadata and images for contract projects. Teams upload assets there so token metadata stays available after mint.