The Classics
type: MusicGroup
genre: doo-wop
description: The Classics were an American vocal group formed in 1958 in Brooklyn. The Classics first sang together in high school; two of them had previously sung in a group called The Del-Rays. In 1959, under t
popularity: 6
followers: 75
additional property: CopyrightID
additional property: CopyrightChainExplorerURL
  type: PropertyValue
  value: https://explorer.copyrightchains.com/tx/0x172bd71608d04dfe1ae7276a1d107d7b75458d3e55c0beb42d4c63f11eaa805a
additional property: OTSHash
additional property: OTSBitcoinBlock
  type: PropertyValue
  value: 954066
additional property: OTSBitcoinBlockVerifyURL
  type: PropertyValue
  value: https://blockstream.info/api/block-height/954066
additional property: OTSProofURL
  type: PropertyValue
  value: https://artists.proofprofile.net/proofs/artist/6d554c72-395f-432a-8ac5-08d58774a351.ots
additional property: OTSRecordURL
  type: PropertyValue
  value: https://artists.proofprofile.net/proofs/artist/6d554c72-395f-432a-8ac5-08d58774a351.json
additional property: OTSVerificationAPI
  type: PropertyValue
  value: https://artists.proofprofile.net/api/v1/bot/ots/verify/artist/6d554c72-395f-432a-8ac5-08d58774a351
additional property: OTSTimestamp
  type: PropertyValue
  value: 2026-06-17T08:11:48Z
additional property: OTSCanonicalRecord
  type: PropertyValue
  value: {"copyright_id":"0x172bd71608d04dfe1ae7276a1d107d7b75458d3e55c0beb42d4c63f11eaa805a","name":"The Classics","registered_at":"2026-06-17T03:43:53Z","symbol":"NIM1270492","token_address":"0xb378a23c325857eea49b914b40f5dec3cb73609d","type":"artist","uuid":"6d554c72-395f-432a-8ac5-08d58774a351"}
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 0x172bd71608d04dfe1ae7276a1d107d7b75458d3e55c0beb42d4c63f11eaa805a. Chain 2 (Bitcoin): anchored in block 954066 (2026-06-17T08:11:48Z). Bridge: the canonical record inside this Bitcoin proof contains the same CopyrightID. Verify: download https://artists.proofprofile.net/proofs/artist/6d554c72-395f-432a-8ac5-08d58774a351.json and https://artists.proofprofile.net/proofs/artist/6d554c72-395f-432a-8ac5-08d58774a351.ots, run `ots verify -f record.json proof.ots` (https://opentimestamps.org).
  date published: 2026-06-17T08:11:48Z
  text: {"copyright_id":"0x172bd71608d04dfe1ae7276a1d107d7b75458d3e55c0beb42d4c63f11eaa805a","name":"The Classics","registered_at":"2026-06-17T03:43:53Z","symbol":"NIM1270492","token_address":"0xb378a23c325857eea49b914b40f5dec3cb73609d","type":"artist","uuid":"6d554c72-395f-432a-8ac5-08d58774a351"}