Cotonou City Crew
type: MusicGroup
popularity: 5
followers: 2030
additional property: CopyrightID
additional property: CopyrightChainExplorerURL
  type: PropertyValue
  value: https://explorer.copyrightchains.com/tx/0x82618ffcda1e22fc80d7e23e17682333c052ee41ca0ef2b586c8825e13354fce
additional property: OTSHash
additional property: OTSBitcoinBlock
  type: PropertyValue
  value: 954631
additional property: OTSBitcoinBlockVerifyURL
  type: PropertyValue
  value: https://blockstream.info/api/block-height/954631
additional property: OTSProofURL
  type: PropertyValue
  value: https://artists.proofprofile.net/proofs/artist/cdd5b313-f01b-4da7-a049-8846b64b3a69.ots
additional property: OTSRecordURL
  type: PropertyValue
  value: https://artists.proofprofile.net/proofs/artist/cdd5b313-f01b-4da7-a049-8846b64b3a69.json
additional property: OTSVerificationAPI
  type: PropertyValue
  value: https://artists.proofprofile.net/api/v1/bot/ots/verify/artist/cdd5b313-f01b-4da7-a049-8846b64b3a69
additional property: OTSTimestamp
  type: PropertyValue
  value: 2026-06-21T02:46:24Z
additional property: OTSCanonicalRecord
  type: PropertyValue
  value: {"copyright_id":"0x82618ffcda1e22fc80d7e23e17682333c052ee41ca0ef2b586c8825e13354fce","name":"Cotonou City Crew","registered_at":"2026-06-20T23:59:32Z","symbol":"NIM1756485","token_address":"0x6649c7b9b5400f61bab0140fc95cc9c06c69b752","type":"artist","uuid":"cdd5b313-f01b-4da7-a049-8846b64b3a69"}
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
subject of: OpenTimestamps Proof of Existence
  type: DigitalDocument
  encoding format: application/vnd.opentimestamps.ots
  description: Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x82618ffcda1e22fc80d7e23e17682333c052ee41ca0ef2b586c8825e13354fce. Chain 2 (Bitcoin): anchored in block 954631 (2026-06-21T02:46:24Z). Bridge: the canonical record inside this Bitcoin proof contains the same CopyrightID. Verify: download https://artists.proofprofile.net/proofs/artist/cdd5b313-f01b-4da7-a049-8846b64b3a69.json and https://artists.proofprofile.net/proofs/artist/cdd5b313-f01b-4da7-a049-8846b64b3a69.ots, run `ots verify -f record.json proof.ots` (https://opentimestamps.org).
  date published: 2026-06-21T02:46:24Z
  text: {"copyright_id":"0x82618ffcda1e22fc80d7e23e17682333c052ee41ca0ef2b586c8825e13354fce","name":"Cotonou City Crew","registered_at":"2026-06-20T23:59:32Z","symbol":"NIM1756485","token_address":"0x6649c7b9b5400f61bab0140fc95cc9c06c69b752","type":"artist","uuid":"cdd5b313-f01b-4da7-a049-8846b64b3a69"}
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  type: MusicAlbum
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  type: MusicAlbum
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  type: MusicAlbum
  date published: 2020-12-25