James Hoffman
type: MusicGroup
description: James Hoffman is a software engineer and inventor who has worked in scientific visualization and was instrumental in producing the first visualization of Costa's minimal surface. His scientific visual
popularity: 2
followers: 678
additional property: CopyrightID
additional property: CopyrightChainExplorerURL
  type: PropertyValue
  value: https://explorer.copyrightchains.com/tx/0xf29d845b991c183b6875ca6b3bcd2846ff2e8aebb896cff4b3a99c2d9a864e15
additional property: OTSHash
additional property: OTSBitcoinBlock
  type: PropertyValue
  value: 954549
additional property: OTSBitcoinBlockVerifyURL
  type: PropertyValue
  value: https://blockstream.info/api/block-height/954549
additional property: OTSProofURL
  type: PropertyValue
  value: https://artists.proofprofile.net/proofs/artist/a7253a5a-cfa5-4801-87ce-4a1d822106af.ots
additional property: OTSRecordURL
  type: PropertyValue
  value: https://artists.proofprofile.net/proofs/artist/a7253a5a-cfa5-4801-87ce-4a1d822106af.json
additional property: OTSVerificationAPI
  type: PropertyValue
  value: https://artists.proofprofile.net/api/v1/bot/ots/verify/artist/a7253a5a-cfa5-4801-87ce-4a1d822106af
additional property: OTSTimestamp
  type: PropertyValue
  value: 2026-06-20T10:56:20Z
additional property: OTSCanonicalRecord
  type: PropertyValue
  value: {"copyright_id":"0xf29d845b991c183b6875ca6b3bcd2846ff2e8aebb896cff4b3a99c2d9a864e15","name":"James Hoffman","registered_at":"2026-06-20T08:23:51Z","symbol":"NIM1564484","token_address":"0x09b5eba10be2dd1e4641c7b3e1c97890fae151a4","type":"artist","uuid":"a7253a5a-cfa5-4801-87ce-4a1d822106af"}
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 0xf29d845b991c183b6875ca6b3bcd2846ff2e8aebb896cff4b3a99c2d9a864e15. Chain 2 (Bitcoin): anchored in block 954549 (2026-06-20T10:56:20Z). Bridge: the canonical record inside this Bitcoin proof contains the same CopyrightID. Verify: download https://artists.proofprofile.net/proofs/artist/a7253a5a-cfa5-4801-87ce-4a1d822106af.json and https://artists.proofprofile.net/proofs/artist/a7253a5a-cfa5-4801-87ce-4a1d822106af.ots, run `ots verify -f record.json proof.ots` (https://opentimestamps.org).
  date published: 2026-06-20T10:56:20Z
  text: {"copyright_id":"0xf29d845b991c183b6875ca6b3bcd2846ff2e8aebb896cff4b3a99c2d9a864e15","name":"James Hoffman","registered_at":"2026-06-20T08:23:51Z","symbol":"NIM1564484","token_address":"0x09b5eba10be2dd1e4641c7b3e1c97890fae151a4","type":"artist","uuid":"a7253a5a-cfa5-4801-87ce-4a1d822106af"}
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