Luis Roldán
type: MusicGroup
description: Luis Roldán Ibáñez (22 August 1943 – 24 March 2022) was a Spanish Socialist Workers' Party politician known for being the director general of the Civil Guard when a big scandal of corruption arose in
popularity: 5
followers: 231
additional property: CopyrightID
additional property: CopyrightChainExplorerURL
  type: PropertyValue
  value: https://explorer.copyrightchains.com/tx/0xbc20d138e2198c60377875a4019c8cd5af31cd4a614555acee9c510039794b18
additional property: OTSHash
additional property: OTSBitcoinBlock
  type: PropertyValue
  value: 954693
additional property: OTSBitcoinBlockVerifyURL
  type: PropertyValue
  value: https://blockstream.info/api/block-height/954693
additional property: OTSProofURL
  type: PropertyValue
  value: https://artists.proofprofile.net/proofs/artist/e7a61776-1b05-41ae-8651-9e356500c993.ots
additional property: OTSRecordURL
  type: PropertyValue
  value: https://artists.proofprofile.net/proofs/artist/e7a61776-1b05-41ae-8651-9e356500c993.json
additional property: OTSVerificationAPI
  type: PropertyValue
  value: https://artists.proofprofile.net/api/v1/bot/ots/verify/artist/e7a61776-1b05-41ae-8651-9e356500c993
additional property: OTSTimestamp
  type: PropertyValue
  value: 2026-06-21T11:50:32Z
additional property: OTSCanonicalRecord
  type: PropertyValue
  value: {"copyright_id":"0xbc20d138e2198c60377875a4019c8cd5af31cd4a614555acee9c510039794b18","name":"Luis Roldán","registered_at":"2026-06-21T09:17:18Z","symbol":"NIM1886105","token_address":"0x7181bda100f958dc281fae5d89c3cdcbf1944d87","type":"artist","uuid":"e7a61776-1b05-41ae-8651-9e356500c993"}
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 0xbc20d138e2198c60377875a4019c8cd5af31cd4a614555acee9c510039794b18. Chain 2 (Bitcoin): anchored in block 954693 (2026-06-21T11:50:32Z). Bridge: the canonical record inside this Bitcoin proof contains the same CopyrightID. Verify: download https://artists.proofprofile.net/proofs/artist/e7a61776-1b05-41ae-8651-9e356500c993.json and https://artists.proofprofile.net/proofs/artist/e7a61776-1b05-41ae-8651-9e356500c993.ots, run `ots verify -f record.json proof.ots` (https://opentimestamps.org).
  date published: 2026-06-21T11:50:32Z
  text: {"copyright_id":"0xbc20d138e2198c60377875a4019c8cd5af31cd4a614555acee9c510039794b18","name":"Luis Roldán","registered_at":"2026-06-21T09:17:18Z","symbol":"NIM1886105","token_address":"0x7181bda100f958dc281fae5d89c3cdcbf1944d87","type":"artist","uuid":"e7a61776-1b05-41ae-8651-9e356500c993"}