{
  "_comment": "Bitcoin Core development sponsors and their known developers. Updated manually.",
  "_last_updated": "2026-01-27",
  "_methodology": "Classification: 'sponsored' = actively funded for Bitcoin Core work. 'affiliated' = works at company but funding unclear.",
  
  "sponsors": [
    {
      "id": "chaincode",
      "name": "Chaincode Labs",
      "type": "nonprofit",
      "domains": ["chaincode.com"],
      "website": "https://chaincode.com"
    },
    {
      "id": "spiral",
      "name": "Spiral (Block/Square)",
      "type": "corporate",
      "domains": ["spiral.xyz", "block.xyz", "squareup.com"],
      "website": "https://spiral.xyz"
    },
    {
      "id": "blockstream",
      "name": "Blockstream",
      "type": "corporate",
      "domains": ["blockstream.com", "blockstream.io"],
      "website": "https://blockstream.com"
    },
    {
      "id": "brink",
      "name": "Brink",
      "type": "nonprofit",
      "domains": ["brink.dev"],
      "website": "https://brink.dev"
    },
    {
      "id": "mit_dci",
      "name": "MIT Digital Currency Initiative",
      "type": "academic",
      "domains": ["mit.edu", "media.mit.edu"],
      "website": "https://dci.mit.edu"
    },
    {
      "id": "hrf",
      "name": "Human Rights Foundation",
      "type": "nonprofit",
      "domains": ["hrf.org"],
      "website": "https://hrf.org/devfund"
    },
    {
      "id": "okcoin",
      "name": "OKCoin",
      "type": "corporate", 
      "domains": ["okcoin.com"],
      "website": "https://okcoin.com"
    },
    {
      "id": "gemini",
      "name": "Gemini",
      "type": "corporate",
      "domains": ["gemini.com"],
      "website": "https://gemini.com"
    },
    {
      "id": "opensats",
      "name": "OpenSats",
      "type": "nonprofit",
      "domains": ["opensats.org"],
      "website": "https://opensats.org"
    }
  ],
  
  "sponsored_developers": [
    {
      "canonical_name": "Gloria Zhao",
      "github": "glozow",
      "emails": ["gloriajzhao@gmail.com"],
      "sponsor_id": "brink",
      "status": "active",
      "notes": "Mempool/P2P focus"
    },
    {
      "canonical_name": "Andrew Chow", 
      "github": "achow101",
      "emails": ["github@achow101.com", "achow101-github@achow101.com"],
      "sponsor_id": "blockstream",
      "status": "active",
      "notes": "Wallet maintainer"
    },
    {
      "canonical_name": "Pieter Wuille",
      "github": "sipa",
      "emails": ["pieter.wuille@gmail.com", "pieter@wuille.net"],
      "sponsor_id": "chaincode",
      "status": "active",
      "notes": "Consensus, cryptography"
    },
    {
      "canonical_name": "Suhas Daftuar",
      "github": "sdaftuar",
      "emails": ["sdaftuar@gmail.com", "sdaftuar@chaincode.com"],
      "sponsor_id": "chaincode",
      "status": "active",
      "notes": "P2P, mempool"
    },
    {
      "canonical_name": "John Newbery",
      "github": "jnewbery",
      "emails": ["john@johnnewbery.com"],
      "sponsor_id": "brink",
      "status": "active",
      "notes": "Brink co-founder"
    },
    {
      "canonical_name": "Marco Falke",
      "github": "MarcoFalke",
      "emails": ["falke.marco@gmail.com", "*~=`'#}+{/-|&$^_@721217.xyz"],
      "sponsor_id": "chaincode",
      "status": "emeritus",
      "notes": "Former testing maintainer"
    },
    {
      "canonical_name": "Wladimir van der Laan",
      "github": "laanwj",
      "emails": ["laanwj@gmail.com", "laanwj@protonmail.com"],
      "sponsor_id": "mit_dci",
      "status": "emeritus",
      "notes": "Former lead maintainer"
    },
    {
      "canonical_name": "Cory Fields",
      "github": "theuni",
      "emails": ["cory-nospam-@coryfields.com"],
      "sponsor_id": "mit_dci",
      "status": "emeritus",
      "notes": "Build system"
    },
    {
      "canonical_name": "Matt Corallo",
      "github": "TheBlueMatt",
      "emails": ["matt@bluematt.me", "bitcoindev@bluematt.me"],
      "sponsor_id": "spiral",
      "status": "active",
      "notes": "LDK, formerly Core"
    },
    {
      "canonical_name": "Michael Ford",
      "github": "fanquake",
      "emails": ["fanquake@gmail.com"],
      "sponsor_id": "brink",
      "status": "active",
      "notes": "Build/release maintainer"
    },
    {
      "canonical_name": "Hennadii Stepanov",
      "github": "hebasto",
      "emails": ["32963518+hebasto@users.noreply.github.com", "hebasto@gmail.com"],
      "sponsor_id": "brink",
      "status": "active",
      "notes": "GUI, build system"
    },
    {
      "canonical_name": "Ryan Ofsky",
      "github": "ryanofsky",
      "emails": ["ryan@ofsky.org"],
      "sponsor_id": "chaincode",
      "status": "active",
      "notes": "Multiprocess"
    },
    {
      "canonical_name": "Sjors Provoost",
      "github": "Sjors",
      "emails": ["sjors@sprovoost.nl"],
      "sponsor_id": "spiral",
      "status": "active",
      "notes": "Wallet, Stratum v2"
    },
    {
      "canonical_name": "Antoine Poinsot",
      "github": "darosior",
      "emails": ["darosior@protonmail.com"],
      "sponsor_id": "chaincode",
      "status": "active",
      "notes": "Miniscript"
    },
    {
      "canonical_name": "Sebastian Falbesoner",
      "github": "theStack",
      "emails": ["sebastian.falbesoner@gmail.com"],
      "sponsor_id": "brink",
      "status": "active",
      "notes": "Various contributions"
    },
    {
      "canonical_name": "Fabian Jahr",
      "github": "fjahr",
      "emails": ["fjahr@protonmail.com"],
      "sponsor_id": "brink",
      "status": "active",
      "notes": "Coinstats, UTXO"
    },
    {
      "canonical_name": "Jon Atack",
      "github": "jonatack",
      "emails": ["jon@atack.com"],
      "sponsor_id": "opensats",
      "status": "active",
      "notes": "Review, P2P"
    },
    {
      "canonical_name": "Antoine Riard",
      "github": "ariard",
      "emails": ["antoine.riard@gmail.com"],
      "sponsor_id": "chaincode",
      "status": "emeritus",
      "notes": "Lightning, mempool"
    },
    {
      "canonical_name": "Greg Sanders",
      "github": "instagibbs",
      "emails": ["gsanders87@gmail.com"],
      "sponsor_id": "spiral",
      "status": "active",
      "notes": "Mempool, wallet"
    }
  ],
  
  "classification_rules": {
    "_comment": "Fallback rules when developer is not in sponsored_developers list",
    "corporate_domains": [
      "chaincode.com", "blockstream.com", "blockstream.io", "spiral.xyz",
      "block.xyz", "brink.dev", "okcoin.com", "gemini.com", "kraken.com",
      "coinbase.com", "bitpay.com", "bitgo.com", "river.com"
    ],
    "academic_domains": [
      "mit.edu", "stanford.edu", "berkeley.edu", "cornell.edu"
    ],
    "personal_domains": [
      "gmail.com", "hotmail.com", "yahoo.com", "outlook.com",
      "protonmail.com", "proton.me", "pm.me", "me.com", "icloud.com", 
      "aol.com", "users.noreply.github.com", "gmx.com", "tutanota.com"
    ]
  }
}