Four Fourty
type: MusicGroup
popularity: 2
followers: 349
additional property: CopyrightID
additional property: CopyrightChainExplorerURL
  type: PropertyValue
  value: https://explorer.copyrightchains.com/tx/0xabbad91a3385bd9857b3cde47d3dfdfa3d2ff9ae28921881c8e8e958f76389b2
additional property: OTSHash
additional property: OTSBitcoinBlock
  type: PropertyValue
  value: 954066
additional property: OTSBitcoinBlockVerifyURL
  type: PropertyValue
  value: https://blockstream.info/api/block-height/954066
additional property: OTSProofURL
  type: PropertyValue
  value: https://artists.proofprofile.net/proofs/artist/71415138-1ccb-4ecc-9962-67f992c07297.ots
additional property: OTSRecordURL
  type: PropertyValue
  value: https://artists.proofprofile.net/proofs/artist/71415138-1ccb-4ecc-9962-67f992c07297.json
additional property: OTSVerificationAPI
  type: PropertyValue
  value: https://artists.proofprofile.net/api/v1/bot/ots/verify/artist/71415138-1ccb-4ecc-9962-67f992c07297
additional property: OTSTimestamp
  type: PropertyValue
  value: 2026-06-17T08:11:48Z
additional property: OTSCanonicalRecord
  type: PropertyValue
  value: {"copyright_id":"0xabbad91a3385bd9857b3cde47d3dfdfa3d2ff9ae28921881c8e8e958f76389b2","name":"Four Fourty","registered_at":"2026-06-17T05:06:13Z","symbol":"NIM1290149","token_address":"0x2acc0da33ecbdac5844eeb834bc8f7c103324ea2","type":"artist","uuid":"71415138-1ccb-4ecc-9962-67f992c07297"}
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 0xabbad91a3385bd9857b3cde47d3dfdfa3d2ff9ae28921881c8e8e958f76389b2. Chain 2 (Bitcoin): anchored in block 954066 (2026-06-17T08:11:48Z). Bridge: the canonical record inside this Bitcoin proof contains the same CopyrightID. Verify: download https://artists.proofprofile.net/proofs/artist/71415138-1ccb-4ecc-9962-67f992c07297.json and https://artists.proofprofile.net/proofs/artist/71415138-1ccb-4ecc-9962-67f992c07297.ots, run `ots verify -f record.json proof.ots` (https://opentimestamps.org).
  date published: 2026-06-17T08:11:48Z
  text: {"copyright_id":"0xabbad91a3385bd9857b3cde47d3dfdfa3d2ff9ae28921881c8e8e958f76389b2","name":"Four Fourty","registered_at":"2026-06-17T05:06:13Z","symbol":"NIM1290149","token_address":"0x2acc0da33ecbdac5844eeb834bc8f7c103324ea2","type":"artist","uuid":"71415138-1ccb-4ecc-9962-67f992c07297"}
album: Messages
  type: MusicAlbum
  date published: 2000-02-12
album: Us + Them = 1
  type: MusicAlbum
  date published: 2005-11-25