Brendon Callahan
type: MusicGroup
popularity: 25
followers: 38
additional property: CopyrightID
additional property: CopyrightChainExplorerURL
  type: PropertyValue
  value: https://explorer.copyrightchains.com/tx/0x76c2e412498b4a013742e55072348c2c49ad000bb3f5939cfc1503d61c5dbf71
additional property: OTSHash
additional property: OTSBitcoinBlock
  type: PropertyValue
  value: 953407
additional property: OTSBitcoinBlockVerifyURL
  type: PropertyValue
  value: https://blockstream.info/api/block-height/953407
additional property: OTSProofURL
  type: PropertyValue
  value: https://artists.proofprofile.net/proofs/artist/23cec5e4-5450-48a8-b9b4-3eed2a87877c.ots
additional property: OTSRecordURL
  type: PropertyValue
  value: https://artists.proofprofile.net/proofs/artist/23cec5e4-5450-48a8-b9b4-3eed2a87877c.json
additional property: OTSVerificationAPI
  type: PropertyValue
  value: https://artists.proofprofile.net/api/v1/bot/ots/verify/artist/23cec5e4-5450-48a8-b9b4-3eed2a87877c
additional property: OTSTimestamp
  type: PropertyValue
  value: 2026-06-12T19:24:56Z
additional property: OTSCanonicalRecord
  type: PropertyValue
  value: {"copyright_id":"0x76c2e412498b4a013742e55072348c2c49ad000bb3f5939cfc1503d61c5dbf71","name":"Brendon Callahan","registered_at":"2026-06-11T14:21:08Z","symbol":"NIM0047396","token_address":"0x7d6b1cad7d6e0ed14dadd62a2d3cd34964f5cf2f","type":"artist","uuid":"23cec5e4-5450-48a8-b9b4-3eed2a87877c"}
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 0x76c2e412498b4a013742e55072348c2c49ad000bb3f5939cfc1503d61c5dbf71. Chain 2 (Bitcoin): anchored in block 953407 (2026-06-12T19:24:56Z). Bridge: the canonical record inside this Bitcoin proof contains the same CopyrightID. Verify: download https://artists.proofprofile.net/proofs/artist/23cec5e4-5450-48a8-b9b4-3eed2a87877c.json and https://artists.proofprofile.net/proofs/artist/23cec5e4-5450-48a8-b9b4-3eed2a87877c.ots, the client at https://opentimestamps.org runs `ots verify -f record.json proof.ots`.
  date published: 2026-06-12T19:24:56Z
  text: {"copyright_id":"0x76c2e412498b4a013742e55072348c2c49ad000bb3f5939cfc1503d61c5dbf71","name":"Brendon Callahan","registered_at":"2026-06-11T14:21:08Z","symbol":"NIM0047396","token_address":"0x7d6b1cad7d6e0ed14dadd62a2d3cd34964f5cf2f","type":"artist","uuid":"23cec5e4-5450-48a8-b9b4-3eed2a87877c"}
album: INDUSTRY BABY
  type: MusicAlbum
  date published: 2024-11-21
album: It Must Have Been Love
  type: MusicAlbum
  date published: 2024-12-05
album: My Girl
  type: MusicAlbum
  date published: 2024-12-19