John Fraser
type: MusicGroup
description: John Fraser may refer to: Politics John Simon Frederick Fraser (1765–1803), commanded the Fraser Fencibles in Ireland and was (M.P.) for Inverness-shire John James Fraser (1829–1896), 5th Premier of
popularity: 3
followers: 2
additional property: CopyrightID
additional property: CopyrightChainExplorerURL
  type: PropertyValue
  value: https://explorer.copyrightchains.com/tx/0xf8fef2330aa14d236a6998ef772f5559c5fdacefcb4e7453a389443bd8a22a0b
additional property: OTSHash
additional property: OTSBitcoinBlock
  type: PropertyValue
  value: 954631
additional property: OTSBitcoinBlockVerifyURL
  type: PropertyValue
  value: https://blockstream.info/api/block-height/954631
additional property: OTSProofURL
  type: PropertyValue
  value: https://artists.proofprofile.net/proofs/artist/cfc34b90-77f3-4734-a377-012f5a1cda00.ots
additional property: OTSRecordURL
  type: PropertyValue
  value: https://artists.proofprofile.net/proofs/artist/cfc34b90-77f3-4734-a377-012f5a1cda00.json
additional property: OTSVerificationAPI
  type: PropertyValue
  value: https://artists.proofprofile.net/api/v1/bot/ots/verify/artist/cfc34b90-77f3-4734-a377-012f5a1cda00
additional property: OTSTimestamp
  type: PropertyValue
  value: 2026-06-21T02:46:24Z
additional property: OTSCanonicalRecord
  type: PropertyValue
  value: {"copyright_id":"0xf8fef2330aa14d236a6998ef772f5559c5fdacefcb4e7453a389443bd8a22a0b","name":"John Fraser","registered_at":"2026-06-21T00:24:46Z","symbol":"NIM1761305","token_address":"0xf7999e3f2d4967b7e7a79375cea9e024a4492de0","type":"artist","uuid":"cfc34b90-77f3-4734-a377-012f5a1cda00"}
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 0xf8fef2330aa14d236a6998ef772f5559c5fdacefcb4e7453a389443bd8a22a0b. Chain 2 (Bitcoin): anchored in block 954631 (2026-06-21T02:46:24Z). Bridge: the canonical record inside this Bitcoin proof contains the same CopyrightID. Verify: download https://artists.proofprofile.net/proofs/artist/cfc34b90-77f3-4734-a377-012f5a1cda00.json and https://artists.proofprofile.net/proofs/artist/cfc34b90-77f3-4734-a377-012f5a1cda00.ots, run `ots verify -f record.json proof.ots` (https://opentimestamps.org).
  date published: 2026-06-21T02:46:24Z
  text: {"copyright_id":"0xf8fef2330aa14d236a6998ef772f5559c5fdacefcb4e7453a389443bd8a22a0b","name":"John Fraser","registered_at":"2026-06-21T00:24:46Z","symbol":"NIM1761305","token_address":"0xf7999e3f2d4967b7e7a79375cea9e024a4492de0","type":"artist","uuid":"cfc34b90-77f3-4734-a377-012f5a1cda00"}