Mark V
type: MusicGroup
description: Mark V or Mark 5 may refer to: Technology Military and weaponry BL 13.5 inch Mk V naval gun (1912); British gun that was a defining feature of the super-dreadnought Orion-class battleships QF 4 inc
popularity: 7
followers: 29
additional property: CopyrightID
additional property: CopyrightChainExplorerURL
  type: PropertyValue
  value: https://explorer.copyrightchains.com/tx/0xab6e1ff5f20226ed41eefdd5f2293f3334464bf336d77bada55ce7019303d12f
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/e9456606-3e82-4d1e-aecf-31674a7a8063.ots
additional property: OTSRecordURL
  type: PropertyValue
  value: https://artists.proofprofile.net/proofs/artist/e9456606-3e82-4d1e-aecf-31674a7a8063.json
additional property: OTSVerificationAPI
  type: PropertyValue
  value: https://artists.proofprofile.net/api/v1/bot/ots/verify/artist/e9456606-3e82-4d1e-aecf-31674a7a8063
additional property: OTSTimestamp
  type: PropertyValue
  value: 2026-06-22T02:53:59Z
additional property: OTSCanonicalRecord
  type: PropertyValue
  value: {"copyright_id":"0xab6e1ff5f20226ed41eefdd5f2293f3334464bf336d77bada55ce7019303d12f","name":"Mark V","registered_at":"2026-06-21T10:10:09Z","symbol":"NIM1891626","token_address":"0xce6950f4815474f4f1c40d9ccedf5fbaceed5f59","type":"artist","uuid":"e9456606-3e82-4d1e-aecf-31674a7a8063"}
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 0xab6e1ff5f20226ed41eefdd5f2293f3334464bf336d77bada55ce7019303d12f. 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/e9456606-3e82-4d1e-aecf-31674a7a8063.json and https://artists.proofprofile.net/proofs/artist/e9456606-3e82-4d1e-aecf-31674a7a8063.ots, run `ots verify -f record.json proof.ots` (https://opentimestamps.org).
  date published: 2026-06-22T02:53:59Z
  text: {"copyright_id":"0xab6e1ff5f20226ed41eefdd5f2293f3334464bf336d77bada55ce7019303d12f","name":"Mark V","registered_at":"2026-06-21T10:10:09Z","symbol":"NIM1891626","token_address":"0xce6950f4815474f4f1c40d9ccedf5fbaceed5f59","type":"artist","uuid":"e9456606-3e82-4d1e-aecf-31674a7a8063"}