Ordnance Survey
type: MusicGroup
description: The Ordnance Survey (OS) is the national mapping agency for Great Britain. The agency's name indicates its original military purpose (see ordnance and surveying), which was to map Scotland in the wake
popularity: 3
followers: 554
additional property: CopyrightID
additional property: CopyrightChainExplorerURL
  type: PropertyValue
  value: https://explorer.copyrightchains.com/tx/0x544920ed618ea2faad4ae9c905b43aaae603a2aa95de2f185ab5c82f639dbbb6
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/d0e877aa-b12d-46ab-aedc-d3f0a7e5dbc2.ots
additional property: OTSRecordURL
  type: PropertyValue
  value: https://artists.proofprofile.net/proofs/artist/d0e877aa-b12d-46ab-aedc-d3f0a7e5dbc2.json
additional property: OTSVerificationAPI
  type: PropertyValue
  value: https://artists.proofprofile.net/api/v1/bot/ots/verify/artist/d0e877aa-b12d-46ab-aedc-d3f0a7e5dbc2
additional property: OTSTimestamp
  type: PropertyValue
  value: 2026-06-21T02:46:24Z
additional property: OTSCanonicalRecord
  type: PropertyValue
  value: {"copyright_id":"0x544920ed618ea2faad4ae9c905b43aaae603a2aa95de2f185ab5c82f639dbbb6","name":"Ordnance Survey","registered_at":"2026-06-21T00:48:03Z","symbol":"NIM1767799","token_address":"0x880a664ea9ab4d346991a4ce2f852bb7b23d1b93","type":"artist","uuid":"d0e877aa-b12d-46ab-aedc-d3f0a7e5dbc2"}
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 0x544920ed618ea2faad4ae9c905b43aaae603a2aa95de2f185ab5c82f639dbbb6. 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/d0e877aa-b12d-46ab-aedc-d3f0a7e5dbc2.json and https://artists.proofprofile.net/proofs/artist/d0e877aa-b12d-46ab-aedc-d3f0a7e5dbc2.ots, run `ots verify -f record.json proof.ots` (https://opentimestamps.org).
  date published: 2026-06-21T02:46:24Z
  text: {"copyright_id":"0x544920ed618ea2faad4ae9c905b43aaae603a2aa95de2f185ab5c82f639dbbb6","name":"Ordnance Survey","registered_at":"2026-06-21T00:48:03Z","symbol":"NIM1767799","token_address":"0x880a664ea9ab4d346991a4ce2f852bb7b23d1b93","type":"artist","uuid":"d0e877aa-b12d-46ab-aedc-d3f0a7e5dbc2"}
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