Jack Mason
type: MusicGroup
genre: kuduro
genre: texas country
description: John Richard Mason (26 March 1874 – 15 October 1958), known as Jack Mason, was an English first-class cricketer with amateur status who played county cricket for Kent between 1893 and 1914, captaining
popularity: 3
followers: 10779
additional property: CopyrightID
additional property: CopyrightChainExplorerURL
  type: PropertyValue
  value: https://explorer.copyrightchains.com/tx/0x072fdc72db28ce5b5b87d59c8a593971068bc42b0445f58d893ea25aa3bd0344
additional property: OTSHash
additional property: OTSBitcoinBlock
  type: PropertyValue
  value: 954134
additional property: OTSBitcoinBlockVerifyURL
  type: PropertyValue
  value: https://blockstream.info/api/block-height/954134
additional property: OTSProofURL
  type: PropertyValue
  value: https://artists.proofprofile.net/proofs/artist/7e76bd90-6a0b-43ef-8066-a2fb3e23a701.ots
additional property: OTSRecordURL
  type: PropertyValue
  value: https://artists.proofprofile.net/proofs/artist/7e76bd90-6a0b-43ef-8066-a2fb3e23a701.json
additional property: OTSVerificationAPI
  type: PropertyValue
  value: https://artists.proofprofile.net/api/v1/bot/ots/verify/artist/7e76bd90-6a0b-43ef-8066-a2fb3e23a701
additional property: OTSTimestamp
  type: PropertyValue
  value: 2026-06-17T19:41:05Z
additional property: OTSCanonicalRecord
  type: PropertyValue
  value: {"copyright_id":"0x072fdc72db28ce5b5b87d59c8a593971068bc42b0445f58d893ea25aa3bd0344","name":"Jack Mason","registered_at":"2026-06-17T09:39:17Z","symbol":"NIM1355248","token_address":"0xb46627cf6457f043d89bbe322b3b25fb4a1fc3b6","type":"artist","uuid":"7e76bd90-6a0b-43ef-8066-a2fb3e23a701"}
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 0x072fdc72db28ce5b5b87d59c8a593971068bc42b0445f58d893ea25aa3bd0344. Chain 2 (Bitcoin): anchored in block 954134 (2026-06-17T19:41:05Z). Bridge: the canonical record inside this Bitcoin proof contains the same CopyrightID. Verify: download https://artists.proofprofile.net/proofs/artist/7e76bd90-6a0b-43ef-8066-a2fb3e23a701.json and https://artists.proofprofile.net/proofs/artist/7e76bd90-6a0b-43ef-8066-a2fb3e23a701.ots, run `ots verify -f record.json proof.ots` (https://opentimestamps.org).
  date published: 2026-06-17T19:41:05Z
  text: {"copyright_id":"0x072fdc72db28ce5b5b87d59c8a593971068bc42b0445f58d893ea25aa3bd0344","name":"Jack Mason","registered_at":"2026-06-17T09:39:17Z","symbol":"NIM1355248","token_address":"0xb46627cf6457f043d89bbe322b3b25fb4a1fc3b6","type":"artist","uuid":"7e76bd90-6a0b-43ef-8066-a2fb3e23a701"}
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