Sam Heyman
type: MusicGroup
genre: progressive house
popularity: 2
followers: 317
additional property: CopyrightID
additional property: CopyrightChainExplorerURL
  type: PropertyValue
  value: https://explorer.copyrightchains.com/tx/0xe572bf70a05c8bae5dd0034aaad1039abc6f1b7f1a849240ec6b3daccf64ccec
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/82ac9a7d-025f-4f70-8875-39362cc36d66.ots
additional property: OTSRecordURL
  type: PropertyValue
  value: https://artists.proofprofile.net/proofs/artist/82ac9a7d-025f-4f70-8875-39362cc36d66.json
additional property: OTSVerificationAPI
  type: PropertyValue
  value: https://artists.proofprofile.net/api/v1/bot/ots/verify/artist/82ac9a7d-025f-4f70-8875-39362cc36d66
additional property: OTSTimestamp
  type: PropertyValue
  value: 2026-06-19T03:22:39Z
additional property: OTSCanonicalRecord
  type: PropertyValue
  value: {"copyright_id":"0xe572bf70a05c8bae5dd0034aaad1039abc6f1b7f1a849240ec6b3daccf64ccec","name":"Sam Heyman","registered_at":"2026-06-17T11:09:45Z","symbol":"NIM1376813","token_address":"0xee32ca1be8f1d81380226dc3110166b240fc6348","type":"artist","uuid":"82ac9a7d-025f-4f70-8875-39362cc36d66"}
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 0xe572bf70a05c8bae5dd0034aaad1039abc6f1b7f1a849240ec6b3daccf64ccec. 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/82ac9a7d-025f-4f70-8875-39362cc36d66.json and https://artists.proofprofile.net/proofs/artist/82ac9a7d-025f-4f70-8875-39362cc36d66.ots, run `ots verify -f record.json proof.ots` (https://opentimestamps.org).
  date published: 2026-06-19T03:22:39Z
  text: {"copyright_id":"0xe572bf70a05c8bae5dd0034aaad1039abc6f1b7f1a849240ec6b3daccf64ccec","name":"Sam Heyman","registered_at":"2026-06-17T11:09:45Z","symbol":"NIM1376813","token_address":"0xee32ca1be8f1d81380226dc3110166b240fc6348","type":"artist","uuid":"82ac9a7d-025f-4f70-8875-39362cc36d66"}
album: Sam Heyman (1st edition)
  type: MusicAlbum
  date published: 2009-08-28
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  type: MusicAlbum
  date published: 2018-08-17
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  date published: 2019-02-18
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  date published: 2019-03-28
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  type: MusicAlbum
  date published: 2019-04-08
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  type: MusicAlbum
  date published: 2020-09-04
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  type: MusicAlbum
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  type: MusicAlbum
  date published: 2022-11-17