Sara Cobo
type: MusicGroup
popularity: 19
followers: 2937
additional property: CopyrightID
additional property: CopyrightChainExplorerURL
  type: PropertyValue
  value: https://explorer.copyrightchains.com/tx/0x3e6d4efc0e53538a356a1b7840028518c018f3f566be614b2fb5ccbda5599c0c
additional property: OTSHash
additional property: OTSBitcoinBlock
  type: PropertyValue
  value: 953719
additional property: OTSBitcoinBlockVerifyURL
  type: PropertyValue
  value: https://blockstream.info/api/block-height/953719
additional property: OTSProofURL
  type: PropertyValue
  value: https://artists.proofprofile.net/proofs/artist/8901042e-14bd-40dd-92ab-a15178f3b143.ots
additional property: OTSRecordURL
  type: PropertyValue
  value: https://artists.proofprofile.net/proofs/artist/8901042e-14bd-40dd-92ab-a15178f3b143.json
additional property: OTSVerificationAPI
  type: PropertyValue
  value: https://artists.proofprofile.net/api/v1/bot/ots/verify/artist/8901042e-14bd-40dd-92ab-a15178f3b143
additional property: OTSTimestamp
  type: PropertyValue
  value: 2026-06-15T01:07:48Z
additional property: OTSCanonicalRecord
  type: PropertyValue
  value: {"copyright_id":"0x3e6d4efc0e53538a356a1b7840028518c018f3f566be614b2fb5ccbda5599c0c","name":"Sara Cobo","registered_at":"2026-06-14T18:52:15Z","symbol":"NIM0544560","token_address":"0x853d359b11be2dc77e7789b219c191cfac952b93","type":"artist","uuid":"8901042e-14bd-40dd-92ab-a15178f3b143"}
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 0x3e6d4efc0e53538a356a1b7840028518c018f3f566be614b2fb5ccbda5599c0c. Chain 2 (Bitcoin): anchored in block 953719 (2026-06-15T01:07:48Z). Bridge: the canonical record inside this Bitcoin proof contains the same CopyrightID. Verify: download https://artists.proofprofile.net/proofs/artist/8901042e-14bd-40dd-92ab-a15178f3b143.json and https://artists.proofprofile.net/proofs/artist/8901042e-14bd-40dd-92ab-a15178f3b143.ots, run `ots verify -f record.json proof.ots` (https://opentimestamps.org).
  date published: 2026-06-15T01:07:48Z
  text: {"copyright_id":"0x3e6d4efc0e53538a356a1b7840028518c018f3f566be614b2fb5ccbda5599c0c","name":"Sara Cobo","registered_at":"2026-06-14T18:52:15Z","symbol":"NIM0544560","token_address":"0x853d359b11be2dc77e7789b219c191cfac952b93","type":"artist","uuid":"8901042e-14bd-40dd-92ab-a15178f3b143"}
album: Sara Cobo
  type: MusicAlbum
  date published: 2017-07-04