United States × Blockchain, Crypto & Web3

🇺🇸Blockchain, Crypto & Web3 in United States

59 blockchain, crypto & web3 providers in United States, publishing 151 APIs.

59 providers 151 published APIs 325 indexed documents

Blockchain, Crypto & Web3 in United States — 59 providers on the APIs.io network sit in both cohorts, and between them they publish 151 indexed APIs.

31 of the 59 publish at least one machine-readable API; 28 publish nothing indexed at all. That split is the first thing worth reading here — a vertical can be well represented in a market and still have almost no programmable surface.

By Kin Score band: 25 minimal, 11 developing, 11 emerging, 4 exemplar, 4 strong, and 4 thin.

Leading by rating: Hive Civilization, SCVD General Store, Kraken, Gemini Trust Company, Solidus Labs, ALTR, and 53 more.

Country membership reads a tag or a stated headquarters. A provider lands in United States when one of its own top-level tags names the country, or when its own description states a headquarters that names the country or one of its cities (roadmap#542, #719). A description that calls a company by its nationality, or names a city in a phrase that is not a headquarters statement, is not counted, so this cell is a floor, not a census.

Providers (59)

Provider	Description	APIs	Rating
Hive Civilization	Hive Civilization (DBAs The Hivery and The Hivery IQ; Walnut Creek, California; single-founder Wyoming corporation established 2026) sells signed, independently verifiable recei...	2	exemplar
SCVD General Store	Record Creative Co. LLC is the one-person Oak City, North Carolina company that operates scvd.store — "Sean-Claude Van Damme's General Store", an evidence observatory for agenti...	3	exemplar
Kraken	Kraken is one of the world's largest and longest-running cryptocurrency exchanges, founded in 2011 and headquartered in San Francisco. Kraken offers Spot and Futures trading, st...	24	exemplar
Gemini Trust Company	Gemini Trust Company, LLC is a United States cryptocurrency exchange and custodian, founded in 2014 and headquartered in New York, regulated as a New York State Department of Fi...	2	exemplar
Solidus Labs	Solidus Labs is a crypto-native market-integrity and compliance technology company founded in 2018 by former Goldman Sachs engineers, headquartered in New York with offices in T...	5	strong
ALTR	ALTR is a unified data security platform that discovers, classifies, masks, tokenizes and monitors sensitive data across Snowflake, Databricks and OLTP databases (PostgreSQL, My...	42	strong
Datavant	Datavant is a United States health-data logistics company, formed from the 2021 merger of Datavant and Ciox Health, that connects and de-identifies healthcare data across a "net...	2	strong
NovoPayment	NovoPayment is a Miami-headquartered banking-as-a-service and embedded-finance platform serving banks, fintechs, retailers and payment companies across the Americas. Its develop...	15	strong
LVL LTD CO	LVL LTD CO is a sole-operator product lab in Cleveland, Georgia (operator Joseph Lamar Taylor; trade name, LLC registration stated as pending) that runs lvlltd.com, an agent-nat...	1	developing
Spreedly	Spreedly is a United States payments orchestration platform and PCI-compliant card vault that lets merchants and platforms securely tokenize payment methods once and then transa...	1	developing
Hive Agent IQ	Hive Agent IQ (hiveagentiq.com) is the agent-platform brand of Hive Civilization — a single-founder Wyoming company (Stephen Rotzin) whose sibling brand thehiveryiq.com is profi...	4	developing
Coinme	Coinme is a Seattle-based regulated cryptocurrency company that offers Crypto-as-a-Service (CaaS): modular API infrastructure that lets platforms embed crypto without building i...	1	developing
Shift4	Shift4 (NYSE: FOUR) is a US-based integrated payments and commerce technology company headquartered in Center Valley, Pennsylvania, and a Fortune 1000 business serving restauran...	1	developing
AltoIRA	Alto (AltoIRA) is a Nashville-based self-directed IRA platform that lets everyday investors hold alternative assets — private equity, venture funds, startups, real estate, farml...	2	developing
Supra	Supra is a vertically integrated Layer 1 blockchain developed by the Swiss-based Entropy Foundation, combining a MultiVM execution layer (MoveVM plus an EVM) with services that ...	2	developing
ACI Worldwide	ACI Worldwide (NASDAQ: ACIW) is a US-headquartered payment-software company that builds real-time payment, card, merchant/eCommerce, and bill-payment technology for banks, proce...	5	developing
Tesser	Tesser is a New York-based stablecoin payments infrastructure company that lets licensed financial institutions, banks, fintechs, and payment service providers move money across...	1	developing
Coin Metrics	Coin Metrics is a Boston-based crypto financial intelligence provider founded in 2017, selling institutional-grade cryptoasset network (on-chain) data, exchange market data (tra...	1	developing
Upland	Upland (Uplandme, Inc.) is a San Francisco-based Web3 metaverse company that maps virtual property onto real-world addresses, letting players buy, sell, trade and build on token...	5	developing
Bitnomial	Bitnomial is a Chicago-based derivatives exchange company that owns and operates U.S. CFTC-regulated subsidiaries — a Designated Contract Market (exchange/DCM), a Derivatives Cl...	2	thin
DEUSPROOF	DEUSPROOF is a free public register of AI agents and a forensic notary for what they make, operated by REDGROUND BLOCKCHAIN LLC (Florida, USA) at deusproof.com. Every agent the ...	3	thin
Bastion	Bastion is a full-stack, regulated stablecoin infrastructure platform for enterprises and financial institutions. Founded in 2023 and based in Campbell, California by former a16...	1	thin
River Financial	River Financial Inc. (river.com) is a regulated U.S.-based Bitcoin brokerage and bank for long-term investors, operating under NMLS ID #1906809. Customers can buy, sell, send, a...	1	thin
HealthVerity	HealthVerity is a United States life-sciences data platform, headquartered in Philadelphia, Pennsylvania, that operates what it describes as the nation's largest real-world data...	1	emerging
Sojo Industries	Sojo Industries is a national industrial-automation and supply-chain technology company founded in 2021 and headquartered in Bristol, Pennsylvania, serving the food and beverage...	1	emerging
American Express	American Express is a globally integrated payments company and card network that offers charge and credit cards, merchant acquiring, corporate payments, travel, and Membership R...	12	emerging
BNY Mellon	BNY Mellon (legal parent The Bank of New York Mellon Corporation, rebranded to "BNY" in 2024) is a US money-center bank and the world's largest custodian, overseeing roughly $50...	5	emerging
Andalusia Labs	Andalusia Labs is an applied research laboratory headquartered in Palo Alto building internet-native economic infrastructure. Its flagship platform, OpenGDP, is the "Global Base...	0	emerging
Chaoslabs	Chaos Labs is a New York-based company building financial-intelligence and economic-security infrastructure for onchain markets. Its flagship product, Edge (Chaos Oracles), is a...	0	emerging
Hamsa	Hamsa (formerly HamsaPay) is a San Francisco-based financial infrastructure company "powering the Finternet." It builds the Hamsa Unified Confidential Ledger (UCL), a privacy-en...	0	emerging
Baxus	BAXUS is a peer-to-peer marketplace for buying, selling, trading, and storing fine and rare wine and spirits, built on the Solana blockchain. Founded in 2021 by Tzvi Wiesel and ...	1	emerging
Blockskye	Blockskye is an enterprise travel management and payments platform for large corporate travel programs, founded in 2017 and headquartered in New York. It combines a consumer-gra...	1	emerging
Milo Credit	Milo (formerly Milo Credit) is a Miami-based financial technology company and licensed mortgage lender that pioneered crypto-backed lending. Milo lets cryptocurrency holders acc...	0	emerging
The Block	The Block is a New York-based digital-assets research, analysis, and news brand founded in 2018, covering cryptocurrency, blockchain, and Web3 markets. Its subscription platform...	3	emerging
Blur	Blur is a New York-based NFT marketplace and aggregator built for professional traders on Ethereum, founded by the pseudonymous "Pacman" (Tieshun Roquerre) in October 2022 and b...	0	minimal
Digital Currency Group	Digital Currency Group (DCG) is a cryptocurrency and blockchain holding and venture company founded in 2015 by Barry Silbert and headquartered in Stamford, Connecticut. DCG buil...	0	minimal
Azra Games	Azra Games is a mobile role-playing game studio founded in 2022 by Mark Otero and headquartered in Sacramento, California. The studio builds RPGs on its proprietary "RPG GameKit...	0	minimal
Chipper Cash	Chipper Cash is a pan-African fintech (legal entities Critical Ideas, Inc. and Voyse Technologies US, Inc.) operating a mobile-first cross-border money transfer, digital payment...	0	minimal
Republic	Republic is a New York-based fintech and private investing platform (republic.com) that lets retail and accredited investors access early-stage startups, private companies, real...	0	minimal
Theta EdgeCloud	Theta EdgeCloud is a distributed, hybrid AI and video cloud built on the Theta Network blockchain, offering on-demand GPU compute for AI model training, fine-tuning, inference, ...	0	minimal
Stickies	Stickies (stickies.wtf) was a Los Angeles-based consumer web3 company, built by BYO Labs, that made "dumb stickers and GIFs starring your favorite NFTs" — users connected a cryp...	0	minimal
Reverie	Reverie is an early-stage venture capital firm based in New York that invests at the pre-seed and seed stages in crypto and web3 companies and protocols, describing its work as ...	0	minimal
Synquote	Synquote is a decentralized crypto options trading platform that lets traders obtain options quotes directly from market makers using a request-for-quote (RFQ) model. Founded in...	0	minimal
MakersPlace	MakersPlace is a curated marketplace for authentic digital creations, letting artists mint, sell, and collect verified digital artworks (NFTs) recorded on the blockchain. Founde...	0	minimal
EV3	Escape Velocity (EV3) is an early-stage crypto and web3 venture capital firm based in New York, co-founded by Mahesh Ramakrishnan and Salvador Gala, that backs founders building...	0	minimal
Placeholder	Placeholder is a venture capital partnership based in New York City that invests in decentralized information networks — crypto protocols and Web3 infrastructure. It was added t...	0	minimal
VeriTX	VeriTX Corp. is a veteran-owned blockchain and cybersecurity firm based in East Aurora, New York that builds trusted, tamper-evident data and supply-chain infrastructure origina...	0	minimal
Core Loop	Core Loop is a game studio founded in 2020 by Vincenzo Alagna and Dan Chao, veterans of Machine Zone, GREE, and Funzio, building a modern cross-platform MMO at the intersection ...	0	minimal
Merkle	Merkle Data is a risk-management and analytics platform for crypto institutions, founded in 2017 and headquartered in New York. The platform aggregates proprietary market data (...	0	minimal
nWay	nWay is a San Francisco-based multiplayer game developer and publisher founded in 2011, known for real-time synchronous PvP titles including Power Rangers: Legacy Wars (70M+ dow...	0	minimal
Dechert	Dechert LLP is a global law firm founded in 1875 and headquartered in Philadelphia, Pennsylvania, with "more than 900 lawyers" across 22 offices in the United States, Europe, th...	0	minimal
Protego Trust Bank	Protego Trust Bank is a Seattle, Washington digital-asset trust bank built for institutional clients, offering crypto-asset custody, trading, lending/borrowing and issuer servic...	0	minimal
Battlebound	Battlebound was a Los Angeles-based blockchain / play-to-earn game studio founded in May 2021 by former Riot Games technical artist Adam Hensel (pseudonym Damos), with a team dr...	0	minimal
BlockFi	BlockFi was a Jersey City, New Jersey crypto-financial-services company founded in 2017 by Zac Prince and Flori Marquez that offered retail and institutional clients interest-be...	0	minimal
Clutch Wallet	Clutch Wallet was a Los Angeles-based web3 startup building a non-custodial "social wallet" and web3 toolkit — a seedless browser extension and mobile wallet (leaning on account...	0	minimal
Slingshot	Slingshot is a self-custody, multi-chain DeFi application and wallet founded in 2020 and headquartered in San Francisco, letting retail users search, send, receive, and swap ten...	0	minimal
Topl	Topl was an impact-technology company founded in 2017 out of Rice University and based in Houston, Texas, building a proof-of-stake blockchain that let organizations prove ethic...	1	minimal
Transparent Systems	Transparent Systems (Transparent Financial Systems) was a Seattle-based fintech startup advancing financial infrastructure through on-demand, 24/7 cryptographic settlement solut...	0	minimal
Unikrn	Unikrn was an esports betting and entertainment company founded in November 2014 by Rahul Sood and Karl Flores, headquartered in Seattle and backed by investors including Mark C...	0	minimal

Indexed API documents (325)

Two numbers, both real: these providers publish 151 APIs as their own documents, which the catalog indexes split one-per-resource into 325 documents. Showing the first 200.

🇺🇸Blockchain, Crypto & Web3 in United States

Providers (59)

Indexed API documents (325)

Hive Receipts and Agent Commerce API (HiveMorph)

HiveCompute Inference Router API

Hive MCP Gateway and Registry

Hive Passport Trust Rail (HKTN)

Hive Civilization A2A Agent

SCVD General Store API

SCVD General Store MCP Servers

SCVD Evidence Agent (A2A)

Kraken Spot WebSocket API v2

Kraken Spot WebSocket API v1 (Legacy)

Kraken Futures WebSocket API

Kraken FIX API

Kraken NFT API

Kraken Earn API

Kraken Embed REST API

Kraken OAuth REST API

Kraken Ramp REST API

Kraken Custody REST API

Kraken OTC REST API

Kraken Prime REST + WebSocket + FIX API

Kraken Account API

Kraken Account Data API

Kraken Auth API

Kraken Charts API

Kraken Earn API

Kraken Funding API

Kraken History API

Kraken Market Data API

Kraken Subaccounts API

Kraken Trading API

Kraken Transfers API

Kraken WebSocket API

Gemini Crypto Trading REST API

Gemini Prediction Markets REST API

Gemini WebSocket API

Gemini MCP Server

Solidus Labs Address API

Solidus Labs Corrections API

Solidus Labs Latest API

Solidus Labs Scams API

Solidus Labs Token API

Solidus Labs Webhooks API

Vaulted Tokenization API

Key Management API (KMA)

ALTR MCP Server

ALTR Access Request API

ALTR Administrators API

ALTR Agent API

ALTR Agent Tasks API

ALTR Agents API

ALTR Alerts API

ALTR Managed Collections API

ALTR Anomalies API

ALTR Applications API

ALTR Auth API

ALTR Auto Tagging API

ALTR Batch API

ALTR Classification API

ALTR Classification Jobs API

ALTR Classifiers API

ALTR Collections API

ALTR Comments API

ALTR Configuration API

ALTR Control Plane API

ALTR Data API

ALTR Data Discovery API

ALTR Data Masking API

ALTR Data Tagging API

ALTR Databases API

ALTR Databricks Tag Policy API

ALTR Definitions API

ALTR Instances API

ALTR Integrations API

ALTR Maskingpolicies API

ALTR Me API

ALTR Metadata API

ALTR Organization API