Port Vell
type: MusicGroup
description: thumb|Barcelona's old Customs building|300px|right thumb|The old Customs building photo from 1971 shows Christopher Columbus' Santa Maria replica (no longer moored there), and missing the new Port Vel
popularity: 6
followers: 23
additional property: CopyrightID
additional property: CopyrightChainExplorerURL
  type: PropertyValue
  value: https://explorer.copyrightchains.com/tx/0xea1040c55927fa2f3902a23d1f7090696e1857127c3a71ef6920b332501050cd
additional property: OTSHash
additional property: OTSBitcoinBlock
  type: PropertyValue
  value: 954603
additional property: OTSBitcoinBlockVerifyURL
  type: PropertyValue
  value: https://blockstream.info/api/block-height/954603
additional property: OTSProofURL
  type: PropertyValue
  value: https://artists.proofprofile.net/proofs/artist/c03331d4-40a9-4191-87af-b1ee1faef6f0.ots
additional property: OTSRecordURL
  type: PropertyValue
  value: https://artists.proofprofile.net/proofs/artist/c03331d4-40a9-4191-87af-b1ee1faef6f0.json
additional property: OTSVerificationAPI
  type: PropertyValue
  value: https://artists.proofprofile.net/api/v1/bot/ots/verify/artist/c03331d4-40a9-4191-87af-b1ee1faef6f0
additional property: OTSTimestamp
  type: PropertyValue
  value: 2026-06-20T21:47:54Z
additional property: OTSCanonicalRecord
  type: PropertyValue
  value: {"copyright_id":"0xea1040c55927fa2f3902a23d1f7090696e1857127c3a71ef6920b332501050cd","name":"Port Vell","registered_at":"2026-06-20T18:59:24Z","symbol":"NIM1685327","token_address":"0x6fdaccc2b8ea3b375acae461b1ff87af65800259","type":"artist","uuid":"c03331d4-40a9-4191-87af-b1ee1faef6f0"}
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 0xea1040c55927fa2f3902a23d1f7090696e1857127c3a71ef6920b332501050cd. Chain 2 (Bitcoin): anchored in block 954603 (2026-06-20T21:47:54Z). Bridge: the canonical record inside this Bitcoin proof contains the same CopyrightID. Verify: download https://artists.proofprofile.net/proofs/artist/c03331d4-40a9-4191-87af-b1ee1faef6f0.json and https://artists.proofprofile.net/proofs/artist/c03331d4-40a9-4191-87af-b1ee1faef6f0.ots, run `ots verify -f record.json proof.ots` (https://opentimestamps.org).
  date published: 2026-06-20T21:47:54Z
  text: {"copyright_id":"0xea1040c55927fa2f3902a23d1f7090696e1857127c3a71ef6920b332501050cd","name":"Port Vell","registered_at":"2026-06-20T18:59:24Z","symbol":"NIM1685327","token_address":"0x6fdaccc2b8ea3b375acae461b1ff87af65800259","type":"artist","uuid":"c03331d4-40a9-4191-87af-b1ee1faef6f0"}
album: Las Mejores Habaneras
  type: MusicAlbum
  date published: 2005
album: Color de Mel
  type: MusicAlbum
  date published: 2019-02-09