El Afri
type: MusicGroup
genre: pop urbano
popularity: 11
followers: 52
additional property: CopyrightID
additional property: CopyrightChainExplorerURL
  type: PropertyValue
  value: https://explorer.copyrightchains.com/tx/0xf64d651e28cb4160a8875d6e284785dd509bcabf03d8b53f45d696e61393e2f9
additional property: OTSHash
additional property: OTSBitcoinBlock
  type: PropertyValue
  value: 953697
additional property: OTSBitcoinBlockVerifyURL
  type: PropertyValue
  value: https://blockstream.info/api/block-height/953697
additional property: OTSProofURL
  type: PropertyValue
  value: https://artists.proofprofile.net/proofs/artist/550727ce-e4c9-4e0d-872c-79966a739214.ots
additional property: OTSRecordURL
  type: PropertyValue
  value: https://artists.proofprofile.net/proofs/artist/550727ce-e4c9-4e0d-872c-79966a739214.json
additional property: OTSVerificationAPI
  type: PropertyValue
  value: https://artists.proofprofile.net/api/v1/bot/ots/verify/artist/550727ce-e4c9-4e0d-872c-79966a739214
additional property: OTSTimestamp
  type: PropertyValue
  value: 2026-06-14T21:49:28Z
additional property: OTSCanonicalRecord
  type: PropertyValue
  value: {"copyright_id":"0xf64d651e28cb4160a8875d6e284785dd509bcabf03d8b53f45d696e61393e2f9","name":"El Afri","registered_at":"2026-06-14T13:23:47Z","symbol":"NIM0466227","token_address":"0x966c3e074d0e6d38e05460ef0e46aefbb266f3f1","type":"artist","uuid":"550727ce-e4c9-4e0d-872c-79966a739214"}
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 0xf64d651e28cb4160a8875d6e284785dd509bcabf03d8b53f45d696e61393e2f9. Chain 2 (Bitcoin): anchored in block 953697 (2026-06-14T21:49:28Z). Bridge: the canonical record inside this Bitcoin proof contains the same CopyrightID. Verify: download https://artists.proofprofile.net/proofs/artist/550727ce-e4c9-4e0d-872c-79966a739214.json and https://artists.proofprofile.net/proofs/artist/550727ce-e4c9-4e0d-872c-79966a739214.ots, the client at https://opentimestamps.org runs `ots verify -f record.json proof.ots`.
  date published: 2026-06-14T21:49:28Z
  text: {"copyright_id":"0xf64d651e28cb4160a8875d6e284785dd509bcabf03d8b53f45d696e61393e2f9","name":"El Afri","registered_at":"2026-06-14T13:23:47Z","symbol":"NIM0466227","token_address":"0x966c3e074d0e6d38e05460ef0e46aefbb266f3f1","type":"artist","uuid":"550727ce-e4c9-4e0d-872c-79966a739214"}
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