Sam Hofman
type: MusicGroup
genre: hard house
popularity: 34
followers: 1751
additional property: CopyrightID
additional property: CopyrightChainExplorerURL
  type: PropertyValue
  value: https://explorer.copyrightchains.com/tx/0x4e35fccb8b23087ecb4edb49c4b39105a65ae57ceb3dcb4c6941f0604fe82740
additional property: OTSHash
additional property: OTSBitcoinBlock
  type: PropertyValue
  value: 953407
additional property: OTSBitcoinBlockVerifyURL
  type: PropertyValue
  value: https://blockstream.info/api/block-height/953407
additional property: OTSProofURL
  type: PropertyValue
  value: https://artists.proofprofile.net/proofs/artist/8389e8e6-c317-4bb7-b712-d88e43e24363.ots
additional property: OTSRecordURL
  type: PropertyValue
  value: https://artists.proofprofile.net/proofs/artist/8389e8e6-c317-4bb7-b712-d88e43e24363.json
additional property: OTSVerificationAPI
  type: PropertyValue
  value: https://artists.proofprofile.net/api/v1/bot/ots/verify/artist/8389e8e6-c317-4bb7-b712-d88e43e24363
additional property: OTSTimestamp
  type: PropertyValue
  value: 2026-06-12T19:24:56Z
additional property: OTSCanonicalRecord
  type: PropertyValue
  value: {"copyright_id":"0x4e35fccb8b23087ecb4edb49c4b39105a65ae57ceb3dcb4c6941f0604fe82740","name":"Sam Hofman","registered_at":"2026-06-12T03:14:27Z","symbol":"NIM0169815","token_address":"0x90438419854e9566522b53e8a72cc89b6d062e80","type":"artist","uuid":"8389e8e6-c317-4bb7-b712-d88e43e24363"}
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 0x4e35fccb8b23087ecb4edb49c4b39105a65ae57ceb3dcb4c6941f0604fe82740. Chain 2 (Bitcoin): anchored in block 953407 (2026-06-12T19:24:56Z). Bridge: the canonical record inside this Bitcoin proof contains the same CopyrightID. Verify: download https://artists.proofprofile.net/proofs/artist/8389e8e6-c317-4bb7-b712-d88e43e24363.json and https://artists.proofprofile.net/proofs/artist/8389e8e6-c317-4bb7-b712-d88e43e24363.ots, the client at https://opentimestamps.org runs `ots verify -f record.json proof.ots`.
  date published: 2026-06-12T19:24:56Z
  text: {"copyright_id":"0x4e35fccb8b23087ecb4edb49c4b39105a65ae57ceb3dcb4c6941f0604fe82740","name":"Sam Hofman","registered_at":"2026-06-12T03:14:27Z","symbol":"NIM0169815","token_address":"0x90438419854e9566522b53e8a72cc89b6d062e80","type":"artist","uuid":"8389e8e6-c317-4bb7-b712-d88e43e24363"}
album: Set Me Free
  type: MusicAlbum
  date published: 2025-03-21
album: Pretty Friends
  type: MusicAlbum
  date published: 2025-07-11