Prototype
type: MusicGroup
description: thumb|A prototype of an electronics project thumb|upright|Prototype signage on the Boise Greenbelt, testing for rust, paint-fastness, durability, etc. A prototype is an early sample, model, or releas
popularity: 13
followers: 102
additional property: CopyrightID
additional property: CopyrightChainExplorerURL
  type: PropertyValue
  value: https://explorer.copyrightchains.com/tx/0x5a1cde61fe686b56b8559f594d23feb5fe3e704ae033c8e5dcbfad45407e912a
additional property: OTSHash
additional property: OTSBitcoinBlock
  type: PropertyValue
  value: 953592
additional property: OTSBitcoinBlockVerifyURL
  type: PropertyValue
  value: https://blockstream.info/api/block-height/953592
additional property: OTSProofURL
  type: PropertyValue
  value: https://artists.proofprofile.net/proofs/artist/05bb4db3-3113-42b9-a0cc-e42d575a0f0b.ots
additional property: OTSRecordURL
  type: PropertyValue
  value: https://artists.proofprofile.net/proofs/artist/05bb4db3-3113-42b9-a0cc-e42d575a0f0b.json
additional property: OTSVerificationAPI
  type: PropertyValue
  value: https://artists.proofprofile.net/api/v1/bot/ots/verify/artist/05bb4db3-3113-42b9-a0cc-e42d575a0f0b
additional property: OTSTimestamp
  type: PropertyValue
  value: 2026-06-14T05:36:59Z
additional property: OTSCanonicalRecord
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
subject of: OpenTimestamps Proof of Existence
  type: DigitalDocument
  encoding format: application/vnd.opentimestamps.ots
  description: Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x5a1cde61fe686b56b8559f594d23feb5fe3e704ae033c8e5dcbfad45407e912a. Chain 2 (Bitcoin): anchored in block 953592 (2026-06-14T05:36:59Z). Bridge: the canonical record inside this Bitcoin proof contains the same CopyrightID. Verify: download https://artists.proofprofile.net/proofs/artist/05bb4db3-3113-42b9-a0cc-e42d575a0f0b.json and https://artists.proofprofile.net/proofs/artist/05bb4db3-3113-42b9-a0cc-e42d575a0f0b.ots, run `ots verify -f record.json proof.ots` (https://opentimestamps.org).
  date published: 2026-06-14T05:36:59Z
album: Groupe de Vérité Urbaine
  type: MusicAlbum
  date published: 2006-06-26
album: Arsenal Concept
  type: MusicAlbum
  date published: 2007-10-03
album: Arsenal concept
  type: MusicAlbum
  date published: 2007-10-03