Jack Hardy
type: MusicGroup
genre: folk
description: Jack Hardy may refer to: Jack Hardy (labor leader) (1901–1993), American labor leader, teacher, and author Jack Hardy (politician) (1924–2006), Manitoba politician Jack Hardy (singer-songwriter) (1947
popularity: 6
followers: 1106
additional property: CopyrightID
additional property: CopyrightChainExplorerURL
  type: PropertyValue
  value: https://explorer.copyrightchains.com/tx/0x5e03084ac170cd25a501903d233b88dd80f2398ac26ac0da1715f63fb24fc715
additional property: OTSHash
additional property: OTSBitcoinBlock
  type: PropertyValue
  value: 954342
additional property: OTSBitcoinBlockVerifyURL
  type: PropertyValue
  value: https://blockstream.info/api/block-height/954342
additional property: OTSProofURL
  type: PropertyValue
  value: https://artists.proofprofile.net/proofs/artist/8827e832-dd3c-48b5-a351-8f24be82c3d0.ots
additional property: OTSRecordURL
  type: PropertyValue
  value: https://artists.proofprofile.net/proofs/artist/8827e832-dd3c-48b5-a351-8f24be82c3d0.json
additional property: OTSVerificationAPI
  type: PropertyValue
  value: https://artists.proofprofile.net/api/v1/bot/ots/verify/artist/8827e832-dd3c-48b5-a351-8f24be82c3d0
additional property: OTSTimestamp
  type: PropertyValue
  value: 2026-06-19T03:22:39Z
additional property: OTSCanonicalRecord
  type: PropertyValue
  value: {"copyright_id":"0x5e03084ac170cd25a501903d233b88dd80f2398ac26ac0da1715f63fb24fc715","name":"Jack Hardy","registered_at":"2026-06-17T13:04:38Z","symbol":"NIM1404125","token_address":"0x4bcd939b4cd6b08f1413c6649c1e06d96d1e00e2","type":"artist","uuid":"8827e832-dd3c-48b5-a351-8f24be82c3d0"}
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 0x5e03084ac170cd25a501903d233b88dd80f2398ac26ac0da1715f63fb24fc715. Chain 2 (Bitcoin): anchored in block 954342 (2026-06-19T03:22:39Z). Bridge: the canonical record inside this Bitcoin proof contains the same CopyrightID. Verify: download https://artists.proofprofile.net/proofs/artist/8827e832-dd3c-48b5-a351-8f24be82c3d0.json and https://artists.proofprofile.net/proofs/artist/8827e832-dd3c-48b5-a351-8f24be82c3d0.ots, run `ots verify -f record.json proof.ots` (https://opentimestamps.org).
  date published: 2026-06-19T03:22:39Z
  text: {"copyright_id":"0x5e03084ac170cd25a501903d233b88dd80f2398ac26ac0da1715f63fb24fc715","name":"Jack Hardy","registered_at":"2026-06-17T13:04:38Z","symbol":"NIM1404125","token_address":"0x4bcd939b4cd6b08f1413c6649c1e06d96d1e00e2","type":"artist","uuid":"8827e832-dd3c-48b5-a351-8f24be82c3d0"}
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