Cuarteto Re!Tango
type: MusicGroup
genre: tango
popularity: 4
followers: 143
additional property: CopyrightID
additional property: CopyrightChainExplorerURL
  type: PropertyValue
  value: https://explorer.copyrightchains.com/tx/0x1abafccba4a4effc375da80eccbbccc31da62290ed47e58e1281bb23aa2cb7dc
additional property: OTSHash
additional property: OTSBitcoinBlock
  type: PropertyValue
  value: 953851
additional property: OTSBitcoinBlockVerifyURL
  type: PropertyValue
  value: https://blockstream.info/api/block-height/953851
additional property: OTSProofURL
  type: PropertyValue
  value: https://artists.proofprofile.net/proofs/artist/01fc72b6-d836-4350-a0c0-90a553bafa84.ots
additional property: OTSRecordURL
  type: PropertyValue
  value: https://artists.proofprofile.net/proofs/artist/01fc72b6-d836-4350-a0c0-90a553bafa84.json
additional property: OTSVerificationAPI
  type: PropertyValue
  value: https://artists.proofprofile.net/api/v1/bot/ots/verify/artist/01fc72b6-d836-4350-a0c0-90a553bafa84
additional property: OTSTimestamp
  type: PropertyValue
  value: 2026-06-15T23:06:35Z
additional property: OTSCanonicalRecord
  type: PropertyValue
  value: {"copyright_id":"0x1abafccba4a4effc375da80eccbbccc31da62290ed47e58e1281bb23aa2cb7dc","name":"Cuarteto Re!Tango","registered_at":"2026-06-15T14:13:04Z","symbol":"NIM0733321","token_address":"0x4a6fde72dba6662601ebf4fc248e6a06224fe516","type":"artist","uuid":"01fc72b6-d836-4350-a0c0-90a553bafa84"}
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 0x1abafccba4a4effc375da80eccbbccc31da62290ed47e58e1281bb23aa2cb7dc. Chain 2 (Bitcoin): anchored in block 953909 (2026-06-16T07:53:13Z). Bridge: the canonical record inside this Bitcoin proof contains the same CopyrightID. Verify: download https://artists.proofprofile.net/proofs/artist/01fc72b6-d836-4350-a0c0-90a553bafa84.json and https://artists.proofprofile.net/proofs/artist/01fc72b6-d836-4350-a0c0-90a553bafa84.ots, run `ots verify -f record.json proof.ots` (https://opentimestamps.org).
  date published: 2026-06-16T07:53:13Z
  text: {"copyright_id":"0x1abafccba4a4effc375da80eccbbccc31da62290ed47e58e1281bb23aa2cb7dc","name":"Cuarteto Re!Tango","registered_at":"2026-06-15T14:13:04Z","symbol":"NIM0733321","token_address":"0x4a6fde72dba6662601ebf4fc248e6a06224fe516","type":"artist","uuid":"01fc72b6-d836-4350-a0c0-90a553bafa84"}
album: Tandas
  type: MusicAlbum
  date published: 2023-07-14