The Chessmen
type: MusicGroup
genre: garage rock
genre: proto-punk
description: The Chessmen were an American garage rock band from Denton, Texas, near Dallas, who were active in the 1960s. They were one of the most popular bands in the region and recorded for Bismark Records, w
popularity: 3
followers: 327
additional property: CopyrightID
additional property: CopyrightChainExplorerURL
  type: PropertyValue
  value: https://explorer.copyrightchains.com/tx/0x52fca3b69c99d0e17c0ab155915f0562d69919328c5b969bf99436759f24023b
additional property: OTSHash
additional property: OTSBitcoinBlock
  type: PropertyValue
  value: 954784
additional property: OTSBitcoinBlockVerifyURL
  type: PropertyValue
  value: https://blockstream.info/api/block-height/954784
additional property: OTSProofURL
  type: PropertyValue
  value: https://artists.proofprofile.net/proofs/artist/f6dc55a2-17c6-4208-a8a4-b4600162f4ed.ots
additional property: OTSRecordURL
  type: PropertyValue
  value: https://artists.proofprofile.net/proofs/artist/f6dc55a2-17c6-4208-a8a4-b4600162f4ed.json
additional property: OTSVerificationAPI
  type: PropertyValue
  value: https://artists.proofprofile.net/api/v1/bot/ots/verify/artist/f6dc55a2-17c6-4208-a8a4-b4600162f4ed
additional property: OTSTimestamp
  type: PropertyValue
  value: 2026-06-22T02:53:59Z
additional property: OTSCanonicalRecord
  type: PropertyValue
  value: {"copyright_id":"0x52fca3b69c99d0e17c0ab155915f0562d69919328c5b969bf99436759f24023b","name":"The Chessmen","registered_at":"2026-06-21T15:41:14Z","symbol":"NIM1961262","token_address":"0xc075f044d26f8b39e6b1a8e665a24daee33d7c80","type":"artist","uuid":"f6dc55a2-17c6-4208-a8a4-b4600162f4ed"}
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 0x52fca3b69c99d0e17c0ab155915f0562d69919328c5b969bf99436759f24023b. Chain 2 (Bitcoin): anchored in block 954784 (2026-06-22T02:53:59Z). Bridge: the canonical record inside this Bitcoin proof contains the same CopyrightID. Verify: download https://artists.proofprofile.net/proofs/artist/f6dc55a2-17c6-4208-a8a4-b4600162f4ed.json and https://artists.proofprofile.net/proofs/artist/f6dc55a2-17c6-4208-a8a4-b4600162f4ed.ots, run `ots verify -f record.json proof.ots` (https://opentimestamps.org).
  date published: 2026-06-22T02:53:59Z
  text: {"copyright_id":"0x52fca3b69c99d0e17c0ab155915f0562d69919328c5b969bf99436759f24023b","name":"The Chessmen","registered_at":"2026-06-21T15:41:14Z","symbol":"NIM1961262","token_address":"0xc075f044d26f8b39e6b1a8e665a24daee33d7c80","type":"artist","uuid":"f6dc55a2-17c6-4208-a8a4-b4600162f4ed"}
album: Collection 1964-1966
  type: MusicAlbum
  date published: 2010-07-31