Wanca Holguin
type: MusicGroup
popularity: 23
additional property: CopyrightID
additional property: CopyrightChainExplorerURL
  type: PropertyValue
  value: https://explorer.copyrightchains.com/tx/0xb29b444a4013edebb370cd5c68a1bbe4a1059f36c6952968d12668e76a3f6936
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/ef9cb6a5-3afd-4387-a9e6-5d0328174adc.ots
additional property: OTSRecordURL
  type: PropertyValue
  value: https://artists.proofprofile.net/proofs/artist/ef9cb6a5-3afd-4387-a9e6-5d0328174adc.json
additional property: OTSVerificationAPI
  type: PropertyValue
  value: https://artists.proofprofile.net/api/v1/bot/ots/verify/artist/ef9cb6a5-3afd-4387-a9e6-5d0328174adc
additional property: OTSTimestamp
  type: PropertyValue
  value: 2026-06-12T19:24:56Z
additional property: OTSCanonicalRecord
  type: PropertyValue
  value: {"copyright_id":"0xb29b444a4013edebb370cd5c68a1bbe4a1059f36c6952968d12668e76a3f6936","name":"Wanca Holguin","registered_at":"2026-06-12T13:15:52Z","symbol":"NIM0308852","token_address":"0x8d10aae383497b5fa3146bb29d7f3b139ac1dc52","type":"artist","uuid":"ef9cb6a5-3afd-4387-a9e6-5d0328174adc"}
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 0xb29b444a4013edebb370cd5c68a1bbe4a1059f36c6952968d12668e76a3f6936. 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/ef9cb6a5-3afd-4387-a9e6-5d0328174adc.json and https://artists.proofprofile.net/proofs/artist/ef9cb6a5-3afd-4387-a9e6-5d0328174adc.ots, run `ots verify -f record.json proof.ots` (https://opentimestamps.org).
  date published: 2026-06-12T19:24:56Z
  text: {"copyright_id":"0xb29b444a4013edebb370cd5c68a1bbe4a1059f36c6952968d12668e76a3f6936","name":"Wanca Holguin","registered_at":"2026-06-12T13:15:52Z","symbol":"NIM0308852","token_address":"0x8d10aae383497b5fa3146bb29d7f3b139ac1dc52","type":"artist","uuid":"ef9cb6a5-3afd-4387-a9e6-5d0328174adc"}
album: Forever
  type: MusicAlbum
  date published: 2025-03-27