Mark Purpose
type: MusicGroup
genre: lo-fi beats
popularity: 12
followers: 72
additional property: CopyrightID
additional property: CopyrightChainExplorerURL
  type: PropertyValue
  value: https://explorer.copyrightchains.com/tx/0x6564b13d8d6682c011b97b0e76e9927095e2fd5dc23b3205e936119cdc92c12c
additional property: OTSHash
additional property: OTSBitcoinBlock
  type: PropertyValue
  value: 953768
additional property: OTSBitcoinBlockVerifyURL
  type: PropertyValue
  value: https://blockstream.info/api/block-height/953768
additional property: OTSProofURL
  type: PropertyValue
  value: https://artists.proofprofile.net/proofs/artist/c1d66554-2b36-49ef-a449-2fac5a172176.ots
additional property: OTSRecordURL
  type: PropertyValue
  value: https://artists.proofprofile.net/proofs/artist/c1d66554-2b36-49ef-a449-2fac5a172176.json
additional property: OTSVerificationAPI
  type: PropertyValue
  value: https://artists.proofprofile.net/api/v1/bot/ots/verify/artist/c1d66554-2b36-49ef-a449-2fac5a172176
additional property: OTSTimestamp
  type: PropertyValue
  value: 2026-06-15T09:30:06Z
additional property: OTSCanonicalRecord
  type: PropertyValue
  value: {"copyright_id":"0x6564b13d8d6682c011b97b0e76e9927095e2fd5dc23b3205e936119cdc92c12c","name":"Mark Purpose","registered_at":"2026-06-15T00:54:41Z","symbol":"NIM0631047","token_address":"0x2a9bb3d0b13c1f155574926ffb765b832a70b16d","type":"artist","uuid":"c1d66554-2b36-49ef-a449-2fac5a172176"}
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 0x6564b13d8d6682c011b97b0e76e9927095e2fd5dc23b3205e936119cdc92c12c. Chain 2 (Bitcoin): anchored in block 953768 (2026-06-15T09:30:06Z). Bridge: the canonical record inside this Bitcoin proof contains the same CopyrightID. Verify: download https://artists.proofprofile.net/proofs/artist/c1d66554-2b36-49ef-a449-2fac5a172176.json and https://artists.proofprofile.net/proofs/artist/c1d66554-2b36-49ef-a449-2fac5a172176.ots, run `ots verify -f record.json proof.ots` (https://opentimestamps.org).
  date published: 2026-06-15T09:30:06Z
  text: {"copyright_id":"0x6564b13d8d6682c011b97b0e76e9927095e2fd5dc23b3205e936119cdc92c12c","name":"Mark Purpose","registered_at":"2026-06-15T00:54:41Z","symbol":"NIM0631047","token_address":"0x2a9bb3d0b13c1f155574926ffb765b832a70b16d","type":"artist","uuid":"c1d66554-2b36-49ef-a449-2fac5a172176"}
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