Célia Held
type: MusicGroup
popularity: 4
followers: 575
additional property: CopyrightID
additional property: CopyrightChainExplorerURL
  type: PropertyValue
  value: https://explorer.copyrightchains.com/tx/0x66820ad9e71e2f4040f4b427c7ec739f12b8377aab1f6c98ee438ad62e97a0d7
additional property: OTSHash
additional property: OTSBitcoinBlock
  type: PropertyValue
  value: 954587
additional property: OTSBitcoinBlockVerifyURL
  type: PropertyValue
  value: https://blockstream.info/api/block-height/954587
additional property: OTSProofURL
  type: PropertyValue
  value: https://artists.proofprofile.net/proofs/artist/bb885518-a542-4f06-932a-edcafe89902d.ots
additional property: OTSRecordURL
  type: PropertyValue
  value: https://artists.proofprofile.net/proofs/artist/bb885518-a542-4f06-932a-edcafe89902d.json
additional property: OTSVerificationAPI
  type: PropertyValue
  value: https://artists.proofprofile.net/api/v1/bot/ots/verify/artist/bb885518-a542-4f06-932a-edcafe89902d
additional property: OTSTimestamp
  type: PropertyValue
  value: 2026-06-20T19:10:41Z
additional property: OTSCanonicalRecord
  type: PropertyValue
  value: {"copyright_id":"0x66820ad9e71e2f4040f4b427c7ec739f12b8377aab1f6c98ee438ad62e97a0d7","name":"Célia Held","registered_at":"2026-06-20T17:12:07Z","symbol":"NIM1662548","token_address":"0xb90cb04d47772eedc874cf13725f3f346e98539b","type":"artist","uuid":"bb885518-a542-4f06-932a-edcafe89902d"}
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 0x66820ad9e71e2f4040f4b427c7ec739f12b8377aab1f6c98ee438ad62e97a0d7. Chain 2 (Bitcoin): anchored in block 954587 (2026-06-20T19:10:41Z). Bridge: the canonical record inside this Bitcoin proof contains the same CopyrightID. Verify: download https://artists.proofprofile.net/proofs/artist/bb885518-a542-4f06-932a-edcafe89902d.json and https://artists.proofprofile.net/proofs/artist/bb885518-a542-4f06-932a-edcafe89902d.ots, run `ots verify -f record.json proof.ots` (https://opentimestamps.org).
  date published: 2026-06-20T19:10:41Z
  text: {"copyright_id":"0x66820ad9e71e2f4040f4b427c7ec739f12b8377aab1f6c98ee438ad62e97a0d7","name":"Célia Held","registered_at":"2026-06-20T17:12:07Z","symbol":"NIM1662548","token_address":"0xb90cb04d47772eedc874cf13725f3f346e98539b","type":"artist","uuid":"bb885518-a542-4f06-932a-edcafe89902d"}
album: Senhor da Paz
  type: MusicAlbum
  date published: 1995-12-01