Peter Mark
type: MusicGroup
description: Peter Mark is an Irish hairdressing chain founded in June 1961 by brothers Peter and Mark Keaveney. The first shop they opened was on the first floor of 87 Grafton Street, Dublin.Head to Toe, 10 Novem
popularity: 7
followers: 120
additional property: CopyrightID
additional property: CopyrightChainExplorerURL
  type: PropertyValue
  value: https://explorer.copyrightchains.com/tx/0x76970b9f23faf1d8f0e20cf81c0f74bbf01a96691afebcf7ea2076a4e535b352
additional property: OTSHash
additional property: OTSBitcoinBlock
  type: PropertyValue
  value: 953968
additional property: OTSBitcoinBlockVerifyURL
  type: PropertyValue
  value: https://blockstream.info/api/block-height/953968
additional property: OTSProofURL
  type: PropertyValue
  value: https://artists.proofprofile.net/proofs/artist/2920328a-638d-45f0-851b-37a91141d9b0.ots
additional property: OTSRecordURL
  type: PropertyValue
  value: https://artists.proofprofile.net/proofs/artist/2920328a-638d-45f0-851b-37a91141d9b0.json
additional property: OTSVerificationAPI
  type: PropertyValue
  value: https://artists.proofprofile.net/api/v1/bot/ots/verify/artist/2920328a-638d-45f0-851b-37a91141d9b0
additional property: OTSTimestamp
  type: PropertyValue
  value: 2026-06-16T16:01:49Z
additional property: OTSCanonicalRecord
  type: PropertyValue
  value: {"copyright_id":"0x76970b9f23faf1d8f0e20cf81c0f74bbf01a96691afebcf7ea2076a4e535b352","name":"Peter Mark","registered_at":"2026-06-16T03:51:55Z","symbol":"NIM0928756","token_address":"0x788f90f23871bda4b7135b7bc0d50250c266df53","type":"artist","uuid":"2920328a-638d-45f0-851b-37a91141d9b0"}
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 0x76970b9f23faf1d8f0e20cf81c0f74bbf01a96691afebcf7ea2076a4e535b352. Chain 2 (Bitcoin): anchored in block 953968 (2026-06-16T16:01:49Z). Bridge: the canonical record inside this Bitcoin proof contains the same CopyrightID. Verify: download https://artists.proofprofile.net/proofs/artist/2920328a-638d-45f0-851b-37a91141d9b0.json and https://artists.proofprofile.net/proofs/artist/2920328a-638d-45f0-851b-37a91141d9b0.ots, run `ots verify -f record.json proof.ots` (https://opentimestamps.org).
  date published: 2026-06-16T16:01:49Z
  text: {"copyright_id":"0x76970b9f23faf1d8f0e20cf81c0f74bbf01a96691afebcf7ea2076a4e535b352","name":"Peter Mark","registered_at":"2026-06-16T03:51:55Z","symbol":"NIM0928756","token_address":"0x788f90f23871bda4b7135b7bc0d50250c266df53","type":"artist","uuid":"2920328a-638d-45f0-851b-37a91141d9b0"}
album: Living Inside Me - Single
  type: MusicAlbum
  date published: 2009-12-21
album: Quiero Respirar
  type: MusicAlbum
  date published: 2010-09-14