Roland Urbina
type: MusicGroup
genre: vallenato
popularity: 11
followers: 108
additional property: CopyrightID
additional property: CopyrightChainExplorerURL
  type: PropertyValue
  value: https://explorer.copyrightchains.com/tx/0x781c6ecef931879ef67e2e8f3ec4ebcd7a548991a4d69c0601006a14738909d2
additional property: OTSHash
additional property: OTSBitcoinBlock
  type: PropertyValue
  value: 953641
additional property: OTSBitcoinBlockVerifyURL
  type: PropertyValue
  value: https://blockstream.info/api/block-height/953641
additional property: OTSProofURL
  type: PropertyValue
  value: https://artists.proofprofile.net/proofs/artist/3946cb7c-ece5-4fba-91b3-99a6d4e95814.ots
additional property: OTSRecordURL
  type: PropertyValue
  value: https://artists.proofprofile.net/proofs/artist/3946cb7c-ece5-4fba-91b3-99a6d4e95814.json
additional property: OTSVerificationAPI
  type: PropertyValue
  value: https://artists.proofprofile.net/api/v1/bot/ots/verify/artist/3946cb7c-ece5-4fba-91b3-99a6d4e95814
additional property: OTSTimestamp
  type: PropertyValue
  value: 2026-06-14T13:54:28Z
additional property: OTSCanonicalRecord
  type: PropertyValue
  value: {"copyright_id":"0x781c6ecef931879ef67e2e8f3ec4ebcd7a548991a4d69c0601006a14738909d2","name":"Roland Urbina","registered_at":"2026-06-14T10:33:39Z","symbol":"NIM0425634","token_address":"0xd8ffe2562fe47048a3bed01447e09baa843db6ec","type":"artist","uuid":"3946cb7c-ece5-4fba-91b3-99a6d4e95814"}
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 0x781c6ecef931879ef67e2e8f3ec4ebcd7a548991a4d69c0601006a14738909d2. Chain 2 (Bitcoin): anchored in block 953641 (2026-06-14T13:54:28Z). Bridge: the canonical record inside this Bitcoin proof contains the same CopyrightID. Verify: download https://artists.proofprofile.net/proofs/artist/3946cb7c-ece5-4fba-91b3-99a6d4e95814.json and https://artists.proofprofile.net/proofs/artist/3946cb7c-ece5-4fba-91b3-99a6d4e95814.ots, the client at https://opentimestamps.org runs `ots verify -f record.json proof.ots`.
  date published: 2026-06-14T13:54:28Z
  text: {"copyright_id":"0x781c6ecef931879ef67e2e8f3ec4ebcd7a548991a4d69c0601006a14738909d2","name":"Roland Urbina","registered_at":"2026-06-14T10:33:39Z","symbol":"NIM0425634","token_address":"0xd8ffe2562fe47048a3bed01447e09baa843db6ec","type":"artist","uuid":"3946cb7c-ece5-4fba-91b3-99a6d4e95814"}