The Checkers
type: MusicGroup
genre: boogie-woogie
genre: doo-wop
popularity: 3
followers: 258
additional property: CopyrightID
additional property: CopyrightChainExplorerURL
  type: PropertyValue
  value: https://explorer.copyrightchains.com/tx/0x1dc0919b4cdb930076b6a88014d2b10a50d87eb3960e489eab30b96d3c54c1d1
additional property: OTSHash
additional property: OTSBitcoinBlock
  type: PropertyValue
  value: 954638
additional property: OTSBitcoinBlockVerifyURL
  type: PropertyValue
  value: https://blockstream.info/api/block-height/954638
additional property: OTSProofURL
  type: PropertyValue
  value: https://artists.proofprofile.net/proofs/artist/d41bafc7-96fc-4257-9aac-f0db146621a0.ots
additional property: OTSRecordURL
  type: PropertyValue
  value: https://artists.proofprofile.net/proofs/artist/d41bafc7-96fc-4257-9aac-f0db146621a0.json
additional property: OTSVerificationAPI
  type: PropertyValue
  value: https://artists.proofprofile.net/api/v1/bot/ots/verify/artist/d41bafc7-96fc-4257-9aac-f0db146621a0
additional property: OTSTimestamp
  type: PropertyValue
  value: 2026-06-21T03:45:44Z
additional property: OTSCanonicalRecord
  type: PropertyValue
  value: {"copyright_id":"0x1dc0919b4cdb930076b6a88014d2b10a50d87eb3960e489eab30b96d3c54c1d1","name":"The Checkers","registered_at":"2026-06-21T01:57:11Z","symbol":"NIM1783262","token_address":"0x6b18e8aa0eaeaea2b98cb68ee9c0fde7066ee9a7","type":"artist","uuid":"d41bafc7-96fc-4257-9aac-f0db146621a0"}
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 Note: an OTS proof may carry multiple Bitcoin attestations; OTSBitcoinBlock is the earliest confirmed one — a later attestation inside the proof corroborates it and is not a mismatch
subject of: OpenTimestamps Proof of Existence
  type: DigitalDocument
  encoding format: application/vnd.opentimestamps.ots
  description: Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x1dc0919b4cdb930076b6a88014d2b10a50d87eb3960e489eab30b96d3c54c1d1. Chain 2 (Bitcoin): anchored in block 954638 (2026-06-21T03:45:44Z). Bridge: the canonical record inside this Bitcoin proof contains the same CopyrightID. Verify: download https://artists.proofprofile.net/proofs/artist/d41bafc7-96fc-4257-9aac-f0db146621a0.json and https://artists.proofprofile.net/proofs/artist/d41bafc7-96fc-4257-9aac-f0db146621a0.ots, the client at https://opentimestamps.org runs `ots verify -f record.json proof.ots`.
  date published: 2026-06-21T03:45:44Z
  text: {"copyright_id":"0x1dc0919b4cdb930076b6a88014d2b10a50d87eb3960e489eab30b96d3c54c1d1","name":"The Checkers","registered_at":"2026-06-21T01:57:11Z","symbol":"NIM1783262","token_address":"0x6b18e8aa0eaeaea2b98cb68ee9c0fde7066ee9a7","type":"artist","uuid":"d41bafc7-96fc-4257-9aac-f0db146621a0"}
album: Swingin' Summer / Skooby Doo
  type: MusicAlbum
  date published: 1961-06-30
album: You Never Had It So Good / I Promise You
  type: MusicAlbum
  date published: 1976
album: You Never Had It So Good / I Promise You
  type: MusicAlbum
  date published: 1976
album: Ghost of My Baby
  type: MusicAlbum
  date published: 2008-05-05
album: Without A Song
  type: MusicAlbum
  date published: 2008-05-05
album: The Very Best of the Checkers
  type: MusicAlbum
  date published: 2008-11-25
album: Greatest Hits
  type: MusicAlbum
  date published: 2010-11-09
album: Greatest Hits
  type: MusicAlbum
  date published: 2010-11-09
album: Skooby Doo (Digital 45)
  type: MusicAlbum
  date published: 2013-11-19
album: The Complete 'King' Recordings
  type: MusicAlbum
  date published: 2013-12-04
album: Promise
  type: MusicAlbum
  date published: 2014-09-18
album: The Blue Vinyl
  type: MusicAlbum
  date published: 2016-04-21
album: Promise
  type: MusicAlbum
  date published: 2018-12-06