El SFK
type: MusicGroup
popularity: 22
followers: 18
additional property: CopyrightID
additional property: CopyrightChainExplorerURL
  type: PropertyValue
  value: https://explorer.copyrightchains.com/tx/0xd15f460f14845b7084035df28e6f7d79244baec83fa7d13fe4c09b61985fa32c
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/20777046-583f-40e1-926c-253c2a3ecda5.ots
additional property: OTSRecordURL
  type: PropertyValue
  value: https://artists.proofprofile.net/proofs/artist/20777046-583f-40e1-926c-253c2a3ecda5.json
additional property: OTSVerificationAPI
  type: PropertyValue
  value: https://artists.proofprofile.net/api/v1/bot/ots/verify/artist/20777046-583f-40e1-926c-253c2a3ecda5
additional property: OTSTimestamp
  type: PropertyValue
  value: 2026-06-12T19:24:56Z
additional property: OTSCanonicalRecord
  type: PropertyValue
  value: {"copyright_id":"0xd15f460f14845b7084035df28e6f7d79244baec83fa7d13fe4c09b61985fa32c","name":"El SFK","registered_at":"2026-06-11T14:01:15Z","symbol":"NIM0042656","token_address":"0x97362d220ed90e403d38faec631886dd4fb98fcd","type":"artist","uuid":"20777046-583f-40e1-926c-253c2a3ecda5"}
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 0xd15f460f14845b7084035df28e6f7d79244baec83fa7d13fe4c09b61985fa32c. 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/20777046-583f-40e1-926c-253c2a3ecda5.json and https://artists.proofprofile.net/proofs/artist/20777046-583f-40e1-926c-253c2a3ecda5.ots, run `ots verify -f record.json proof.ots` (https://opentimestamps.org).
  date published: 2026-06-12T19:24:56Z
  text: {"copyright_id":"0xd15f460f14845b7084035df28e6f7d79244baec83fa7d13fe4c09b61985fa32c","name":"El SFK","registered_at":"2026-06-11T14:01:15Z","symbol":"NIM0042656","token_address":"0x97362d220ed90e403d38faec631886dd4fb98fcd","type":"artist","uuid":"20777046-583f-40e1-926c-253c2a3ecda5"}
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  type: MusicAlbum
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