La Cattrina
type: MusicGroup
genre: folk metal
popularity: 2
followers: 565
additional property: CopyrightID
additional property: CopyrightChainExplorerURL
  type: PropertyValue
  value: https://explorer.copyrightchains.com/tx/0x54468a755de9872486c61df20ca9fa9040234ab897429e427af5bd843f77086b
additional property: OTSHash
additional property: OTSBitcoinBlock
  type: PropertyValue
  value: 953961
additional property: OTSBitcoinBlockVerifyURL
  type: PropertyValue
  value: https://blockstream.info/api/block-height/953961
additional property: OTSProofURL
  type: PropertyValue
  value: https://artists.proofprofile.net/proofs/artist/27a48840-cd51-40a4-8790-9de7cb39acca.ots
additional property: OTSRecordURL
  type: PropertyValue
  value: https://artists.proofprofile.net/proofs/artist/27a48840-cd51-40a4-8790-9de7cb39acca.json
additional property: OTSVerificationAPI
  type: PropertyValue
  value: https://artists.proofprofile.net/api/v1/bot/ots/verify/artist/27a48840-cd51-40a4-8790-9de7cb39acca
additional property: OTSTimestamp
  type: PropertyValue
  value: 2026-06-16T14:58:45Z
additional property: OTSCanonicalRecord
  type: PropertyValue
  value: {"copyright_id":"0x54468a755de9872486c61df20ca9fa9040234ab897429e427af5bd843f77086b","name":"La Cattrina","registered_at":"2026-06-16T03:25:14Z","symbol":"NIM0922384","token_address":"0x9860b544050b604031139b9c2edb0d0ceb385d1e","type":"artist","uuid":"27a48840-cd51-40a4-8790-9de7cb39acca"}
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 0x54468a755de9872486c61df20ca9fa9040234ab897429e427af5bd843f77086b. Chain 2 (Bitcoin): anchored in block 953961 (2026-06-16T14:58:45Z). Bridge: the canonical record inside this Bitcoin proof contains the same CopyrightID. Verify: download https://artists.proofprofile.net/proofs/artist/27a48840-cd51-40a4-8790-9de7cb39acca.json and https://artists.proofprofile.net/proofs/artist/27a48840-cd51-40a4-8790-9de7cb39acca.ots, run `ots verify -f record.json proof.ots` (https://opentimestamps.org).
  date published: 2026-06-16T14:58:45Z
  text: {"copyright_id":"0x54468a755de9872486c61df20ca9fa9040234ab897429e427af5bd843f77086b","name":"La Cattrina","registered_at":"2026-06-16T03:25:14Z","symbol":"NIM0922384","token_address":"0x9860b544050b604031139b9c2edb0d0ceb385d1e","type":"artist","uuid":"27a48840-cd51-40a4-8790-9de7cb39acca"}
album: Día de Muertos
  type: MusicAlbum
  date published: 2019-11-02
album: Todos Muertos, Todos Santos
  type: MusicAlbum
  date published: 2023-11-02