Barça Fans
type: MusicGroup
popularity: 11
followers: 5437
additional property: CopyrightID
additional property: CopyrightChainExplorerURL
  type: PropertyValue
  value: https://explorer.copyrightchains.com/tx/0x6efd94dc5305b9c1cdbb7a6f14f03bf92e9c0aaff7e3d09ff1120f062ae96b74
additional property: OTSHash
additional property: OTSBitcoinBlock
  type: PropertyValue
  value: 953803
additional property: OTSBitcoinBlockVerifyURL
  type: PropertyValue
  value: https://blockstream.info/api/block-height/953803
additional property: OTSProofURL
  type: PropertyValue
  value: https://artists.proofprofile.net/proofs/artist/e35744c4-4d3c-4185-b371-48989d791f32.ots
additional property: OTSRecordURL
  type: PropertyValue
  value: https://artists.proofprofile.net/proofs/artist/e35744c4-4d3c-4185-b371-48989d791f32.json
additional property: OTSVerificationAPI
  type: PropertyValue
  value: https://artists.proofprofile.net/api/v1/bot/ots/verify/artist/e35744c4-4d3c-4185-b371-48989d791f32
additional property: OTSTimestamp
  type: PropertyValue
  value: 2026-06-15T15:41:00Z
additional property: OTSCanonicalRecord
  type: PropertyValue
  value: {"copyright_id":"0x6efd94dc5305b9c1cdbb7a6f14f03bf92e9c0aaff7e3d09ff1120f062ae96b74","name":"Barça Fans","registered_at":"2026-06-15T04:17:43Z","symbol":"NIM0679546","token_address":"0x381c4c8eaf8c8b363477f3180edcefbd48fca737","type":"artist","uuid":"e35744c4-4d3c-4185-b371-48989d791f32"}
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 0x6efd94dc5305b9c1cdbb7a6f14f03bf92e9c0aaff7e3d09ff1120f062ae96b74. Chain 2 (Bitcoin): anchored in block 953842 (2026-06-15T22:22:30Z). Bridge: the canonical record inside this Bitcoin proof contains the same CopyrightID. Verify: download https://artists.proofprofile.net/proofs/artist/e35744c4-4d3c-4185-b371-48989d791f32.json and https://artists.proofprofile.net/proofs/artist/e35744c4-4d3c-4185-b371-48989d791f32.ots, run `ots verify -f record.json proof.ots` (https://opentimestamps.org).
  date published: 2026-06-15T22:22:30Z
  text: {"copyright_id":"0x6efd94dc5305b9c1cdbb7a6f14f03bf92e9c0aaff7e3d09ff1120f062ae96b74","name":"Barça Fans","registered_at":"2026-06-15T04:17:43Z","symbol":"NIM0679546","token_address":"0x381c4c8eaf8c8b363477f3180edcefbd48fca737","type":"artist","uuid":"e35744c4-4d3c-4185-b371-48989d791f32"}