Capitol Quartet
type: MusicGroup
popularity: 3
followers: 203
additional property: CopyrightID
additional property: CopyrightChainExplorerURL
  type: PropertyValue
  value: https://explorer.copyrightchains.com/tx/0xb1fcbb6f13d5019b8cd1eb58cdb5af0f444831131b8384fe8a4ac213f42f0e61
additional property: OTSHash
additional property: OTSBitcoinBlock
  type: PropertyValue
  value: 954705
additional property: OTSBitcoinBlockVerifyURL
  type: PropertyValue
  value: https://blockstream.info/api/block-height/954705
additional property: OTSProofURL
  type: PropertyValue
  value: https://artists.proofprofile.net/proofs/artist/eb70bb99-1560-4720-899f-1753e10b7d3b.ots
additional property: OTSRecordURL
  type: PropertyValue
  value: https://artists.proofprofile.net/proofs/artist/eb70bb99-1560-4720-899f-1753e10b7d3b.json
additional property: OTSVerificationAPI
  type: PropertyValue
  value: https://artists.proofprofile.net/api/v1/bot/ots/verify/artist/eb70bb99-1560-4720-899f-1753e10b7d3b
additional property: OTSTimestamp
  type: PropertyValue
  value: 2026-06-21T13:42:37Z
additional property: OTSCanonicalRecord
  type: PropertyValue
  value: {"copyright_id":"0xb1fcbb6f13d5019b8cd1eb58cdb5af0f444831131b8384fe8a4ac213f42f0e61","name":"Capitol Quartet","registered_at":"2026-06-21T10:44:24Z","symbol":"NIM1901878","token_address":"0xa540332e382d9c3b06d0196246542692648dde90","type":"artist","uuid":"eb70bb99-1560-4720-899f-1753e10b7d3b"}
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 0xb1fcbb6f13d5019b8cd1eb58cdb5af0f444831131b8384fe8a4ac213f42f0e61. Chain 2 (Bitcoin): anchored in block 954705 (2026-06-21T13:42:37Z). Bridge: the canonical record inside this Bitcoin proof contains the same CopyrightID. Verify: download https://artists.proofprofile.net/proofs/artist/eb70bb99-1560-4720-899f-1753e10b7d3b.json and https://artists.proofprofile.net/proofs/artist/eb70bb99-1560-4720-899f-1753e10b7d3b.ots, run `ots verify -f record.json proof.ots` (https://opentimestamps.org).
  date published: 2026-06-21T13:42:37Z
  text: {"copyright_id":"0xb1fcbb6f13d5019b8cd1eb58cdb5af0f444831131b8384fe8a4ac213f42f0e61","name":"Capitol Quartet","registered_at":"2026-06-21T10:44:24Z","symbol":"NIM1901878","token_address":"0xa540332e382d9c3b06d0196246542692648dde90","type":"artist","uuid":"eb70bb99-1560-4720-899f-1753e10b7d3b"}
album: Capitol Quartet: American Sketches
  type: MusicAlbum
  date published: 1997-01-01
album: Capitol Quartet: American Sketches
  type: MusicAlbum
  date published: 1997-01-01
album: Anything Goes
  type: MusicAlbum
  date published: 2001
album: Flex
  type: MusicAlbum
  date published: 2012-08-27
album: Balance
  type: MusicAlbum
  date published: 2015-08-14