John Bartholomew
type: MusicGroup
description: thumb|upright|Bartholomew grave, Grange Cemetery, Edinburgh John Bartholomew Jr (25 December 1831 – 30 March 1893) was a Scottish cartographer. Life Bartholomew was born in Edinburgh, Scotland. His f
popularity: 7
followers: 92
additional property: CopyrightID
additional property: CopyrightChainExplorerURL
  type: PropertyValue
  value: https://explorer.copyrightchains.com/tx/0x89ead01e32d898fa8c5a8888375f191f8e306a13732c717b2f96ede7b285fbe4
additional property: OTSHash
additional property: OTSBitcoinBlock
  type: PropertyValue
  value: 954342
additional property: OTSBitcoinBlockVerifyURL
  type: PropertyValue
  value: https://blockstream.info/api/block-height/954342
additional property: OTSProofURL
  type: PropertyValue
  value: https://artists.proofprofile.net/proofs/artist/91c26780-2b71-4c66-884c-f578e5af67eb.ots
additional property: OTSRecordURL
  type: PropertyValue
  value: https://artists.proofprofile.net/proofs/artist/91c26780-2b71-4c66-884c-f578e5af67eb.json
additional property: OTSVerificationAPI
  type: PropertyValue
  value: https://artists.proofprofile.net/api/v1/bot/ots/verify/artist/91c26780-2b71-4c66-884c-f578e5af67eb
additional property: OTSTimestamp
  type: PropertyValue
  value: 2026-06-19T03:22:39Z
additional property: OTSCanonicalRecord
  type: PropertyValue
  value: {"copyright_id":"0x89ead01e32d898fa8c5a8888375f191f8e306a13732c717b2f96ede7b285fbe4","name":"John Bartholomew","registered_at":"2026-06-17T16:28:26Z","symbol":"NIM1452792","token_address":"0xc267683ec5f6892b31c25eab560f6cae4e54ed77","type":"artist","uuid":"91c26780-2b71-4c66-884c-f578e5af67eb"}
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 0x89ead01e32d898fa8c5a8888375f191f8e306a13732c717b2f96ede7b285fbe4. Chain 2 (Bitcoin): anchored in block 954342 (2026-06-19T03:22:39Z). Bridge: the canonical record inside this Bitcoin proof contains the same CopyrightID. Verify: download https://artists.proofprofile.net/proofs/artist/91c26780-2b71-4c66-884c-f578e5af67eb.json and https://artists.proofprofile.net/proofs/artist/91c26780-2b71-4c66-884c-f578e5af67eb.ots, run `ots verify -f record.json proof.ots` (https://opentimestamps.org).
  date published: 2026-06-19T03:22:39Z
  text: {"copyright_id":"0x89ead01e32d898fa8c5a8888375f191f8e306a13732c717b2f96ede7b285fbe4","name":"John Bartholomew","registered_at":"2026-06-17T16:28:26Z","symbol":"NIM1452792","token_address":"0xc267683ec5f6892b31c25eab560f6cae4e54ed77","type":"artist","uuid":"91c26780-2b71-4c66-884c-f578e5af67eb"}
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