La 840
type: MusicGroup
genre: cuarteto
popularity: 21
followers: 4335
additional property: CopyrightID
additional property: CopyrightChainExplorerURL
  type: PropertyValue
  value: https://explorer.copyrightchains.com/tx/0xf4c31307af0104a719caf58d57034618411d452382e61ec2b8b0f5a7e1a0a3dd
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/77fa4a72-ae49-45d1-9f89-096453b086db.ots
additional property: OTSRecordURL
  type: PropertyValue
  value: https://artists.proofprofile.net/proofs/artist/77fa4a72-ae49-45d1-9f89-096453b086db.json
additional property: OTSVerificationAPI
  type: PropertyValue
  value: https://artists.proofprofile.net/api/v1/bot/ots/verify/artist/77fa4a72-ae49-45d1-9f89-096453b086db
additional property: OTSTimestamp
  type: PropertyValue
  value: 2026-06-12T19:24:56Z
additional property: OTSCanonicalRecord
  type: PropertyValue
  value: {"copyright_id":"0xf4c31307af0104a719caf58d57034618411d452382e61ec2b8b0f5a7e1a0a3dd","name":"La 840","registered_at":"2026-06-12T01:20:51Z","symbol":"NIM0155001","token_address":"0xb02748a3ed4a6b6f9b895eab99484d5378c0a598","type":"artist","uuid":"77fa4a72-ae49-45d1-9f89-096453b086db"}
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 0xf4c31307af0104a719caf58d57034618411d452382e61ec2b8b0f5a7e1a0a3dd. Chain 2 (Bitcoin): anchored in block 953408 (2026-06-12T19:28:13Z). Bridge: the canonical record inside this Bitcoin proof contains the same CopyrightID. Verify: download https://artists.proofprofile.net/proofs/artist/77fa4a72-ae49-45d1-9f89-096453b086db.json and https://artists.proofprofile.net/proofs/artist/77fa4a72-ae49-45d1-9f89-096453b086db.ots, run `ots verify -f record.json proof.ots` (https://opentimestamps.org).
  date published: 2026-06-12T19:28:13Z
  text: {"copyright_id":"0xf4c31307af0104a719caf58d57034618411d452382e61ec2b8b0f5a7e1a0a3dd","name":"La 840","registered_at":"2026-06-12T01:20:51Z","symbol":"NIM0155001","token_address":"0xb02748a3ed4a6b6f9b895eab99484d5378c0a598","type":"artist","uuid":"77fa4a72-ae49-45d1-9f89-096453b086db"}
album: La Banda del Potro
  type: MusicAlbum
  date published: 2015-08-06
album: Era Todo Mentira
  type: MusicAlbum
  date published: 2024-11-12
album: Tan Solo Yo
  type: MusicAlbum
  date published: 2024-12-06