Mark Colby
type: MusicGroup
genre: cool jazz
genre: jazz funk
popularity: 2
followers: 396
additional property: CopyrightID
additional property: CopyrightChainExplorerURL
  type: PropertyValue
  value: https://explorer.copyrightchains.com/tx/0x09ed22ff0401e3ca33e4f4c633435cc7cb0cdb104e3048dccfeda99252b2c0a5
additional property: OTSHash
additional property: OTSBitcoinBlock
  type: PropertyValue
  value: 954603
additional property: OTSBitcoinBlockVerifyURL
  type: PropertyValue
  value: https://blockstream.info/api/block-height/954603
additional property: OTSProofURL
  type: PropertyValue
  value: https://artists.proofprofile.net/proofs/artist/c3a0ebf9-3bac-44cf-a9fe-317857579367.ots
additional property: OTSRecordURL
  type: PropertyValue
  value: https://artists.proofprofile.net/proofs/artist/c3a0ebf9-3bac-44cf-a9fe-317857579367.json
additional property: OTSVerificationAPI
  type: PropertyValue
  value: https://artists.proofprofile.net/api/v1/bot/ots/verify/artist/c3a0ebf9-3bac-44cf-a9fe-317857579367
additional property: OTSTimestamp
  type: PropertyValue
  value: 2026-06-20T21:47:54Z
additional property: OTSCanonicalRecord
  type: PropertyValue
  value: {"copyright_id":"0x09ed22ff0401e3ca33e4f4c633435cc7cb0cdb104e3048dccfeda99252b2c0a5","name":"Mark Colby","registered_at":"2026-06-20T20:24:26Z","symbol":"NIM1705216","token_address":"0x6f71b32f16d22239ace96af72069243481e69dbb","type":"artist","uuid":"c3a0ebf9-3bac-44cf-a9fe-317857579367"}
additional property: OTSVerifyInstructions
  type: PropertyValue
  value: 1. Compute SHA-256 of OTSCanonicalRecord value → must equal OTSHash 2. Open OTSProofURL → extract Bitcoin block number → must equal OTSBitcoinBlock 3. GET OTSBitcoinBlockVerifyURL → returns the Bitcoin block hash at height OTSBitcoinBlock; GET https://blockstream.info/api/block/{that hash} → its timestamp must match OTSTimestamp 4. Read CopyrightID inside OTSCanonicalRecord → must equal the CopyrightID above 5. GET OTSVerificationAPI → pre-computed 6-check result from server 6. If all match: this entity was registered on CopyrightChains at OTSTimestamp, independently verifiable on Bitcoin Note: an OTS proof may carry multiple Bitcoin attestations; OTSBitcoinBlock is the earliest confirmed one — a later attestation inside the proof corroborates it and is not a mismatch
subject of: OpenTimestamps Proof of Existence
  type: DigitalDocument
  encoding format: application/vnd.opentimestamps.ots
  description: Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x09ed22ff0401e3ca33e4f4c633435cc7cb0cdb104e3048dccfeda99252b2c0a5. Chain 2 (Bitcoin): anchored in block 954603 (2026-06-20T21:47:54Z). Bridge: the canonical record inside this Bitcoin proof contains the same CopyrightID. Verify: download https://artists.proofprofile.net/proofs/artist/c3a0ebf9-3bac-44cf-a9fe-317857579367.json and https://artists.proofprofile.net/proofs/artist/c3a0ebf9-3bac-44cf-a9fe-317857579367.ots, run `ots verify -f record.json proof.ots` (https://opentimestamps.org).
  date published: 2026-06-20T21:47:54Z
  text: {"copyright_id":"0x09ed22ff0401e3ca33e4f4c633435cc7cb0cdb104e3048dccfeda99252b2c0a5","name":"Mark Colby","registered_at":"2026-06-20T20:24:26Z","symbol":"NIM1705216","token_address":"0x6f71b32f16d22239ace96af72069243481e69dbb","type":"artist","uuid":"c3a0ebf9-3bac-44cf-a9fe-317857579367"}
album: Tenor Reference
  type: MusicAlbum
  date published: 2001-01-01
album: Tenor Reference
  type: MusicAlbum
  date published: 2001-01-01
album: Speaking of Stan
  type: MusicAlbum
  date published: 2003
album: I Didn't Have Wings
  type: MusicAlbum
  date published: 2004-01-01
album: Reflections
  type: MusicAlbum
  date published: 2008-11-18
album: Yesterday's Gardenias
  type: MusicAlbum
  date published: 2011-11-15
album: Serpentine Fire / One Good Turn
  type: MusicAlbum
  date published: 2015-05-21