21 Bronco
type: MusicGroup
popularity: 2
followers: 309
additional property: CopyrightID
additional property: CopyrightChainExplorerURL
  type: PropertyValue
  value: https://explorer.copyrightchains.com/tx/0x23d9f3b4a86b444c2f0f4bb97c639d6febbce7443ca891266f123bca596bc8f5
additional property: OTSHash
additional property: OTSBitcoinBlock
  type: PropertyValue
  value: 953915
additional property: OTSBitcoinBlockVerifyURL
  type: PropertyValue
  value: https://blockstream.info/api/block-height/953915
additional property: OTSProofURL
  type: PropertyValue
  value: https://artists.proofprofile.net/proofs/artist/19e15faf-9cc4-4989-b1f1-7986303033d4.ots
additional property: OTSRecordURL
  type: PropertyValue
  value: https://artists.proofprofile.net/proofs/artist/19e15faf-9cc4-4989-b1f1-7986303033d4.json
additional property: OTSVerificationAPI
  type: PropertyValue
  value: https://artists.proofprofile.net/api/v1/bot/ots/verify/artist/19e15faf-9cc4-4989-b1f1-7986303033d4
additional property: OTSTimestamp
  type: PropertyValue
  value: 2026-06-16T08:36:32Z
additional property: OTSCanonicalRecord
  type: PropertyValue
  value: {"copyright_id":"0x23d9f3b4a86b444c2f0f4bb97c639d6febbce7443ca891266f123bca596bc8f5","name":"21 Bronco","registered_at":"2026-06-15T22:48:47Z","symbol":"NIM0856358","token_address":"0x58a042de84db5d0e143e4d522b9c2212b0556fec","type":"artist","uuid":"19e15faf-9cc4-4989-b1f1-7986303033d4"}
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 0x23d9f3b4a86b444c2f0f4bb97c639d6febbce7443ca891266f123bca596bc8f5. Chain 2 (Bitcoin): anchored in block 953915 (2026-06-16T08:36:32Z). Bridge: the canonical record inside this Bitcoin proof contains the same CopyrightID. Verify: download https://artists.proofprofile.net/proofs/artist/19e15faf-9cc4-4989-b1f1-7986303033d4.json and https://artists.proofprofile.net/proofs/artist/19e15faf-9cc4-4989-b1f1-7986303033d4.ots, the client at https://opentimestamps.org runs `ots verify -f record.json proof.ots`.
  date published: 2026-06-16T08:36:32Z
  text: {"copyright_id":"0x23d9f3b4a86b444c2f0f4bb97c639d6febbce7443ca891266f123bca596bc8f5","name":"21 Bronco","registered_at":"2026-06-15T22:48:47Z","symbol":"NIM0856358","token_address":"0x58a042de84db5d0e143e4d522b9c2212b0556fec","type":"artist","uuid":"19e15faf-9cc4-4989-b1f1-7986303033d4"}
album: The Rehearsal Tapes, Pt. 1 (Live)
  type: MusicAlbum
  date published: 2016-07-27
album: The Rehearsal Tapes, Pt. 1
  type: MusicAlbum
  date published: 2016-07-27
album: The Rehearsal Tapes, Pt. 2
  type: MusicAlbum
  date published: 2016-08-26
album: The Rehearsal Tapes, Pt. 2
  type: MusicAlbum
  date published: 2016-08-26
album: The Rehearsal Tapes, Pt. 2 (Live)
  type: MusicAlbum
  date published: 2016-08-26
album: The Rehearsal Tapes, Pt. 2
  type: MusicAlbum
  date published: 2016-08-26
album: The Rehearsal Tapes, Pt. 3
  type: MusicAlbum
  date published: 2016-12-21
album: The Rehearsal Tapes, Pt. 3 (Live)
  type: MusicAlbum
  date published: 2016-12-21
album: The Rehearsal Tapes, Pt. 4
  type: MusicAlbum
  date published: 2018-01-19
album: The Rehearsal Tapes, Pt. 4
  type: MusicAlbum
  date published: 2018-01-19