Underfloor
type: MusicGroup
genre: hardcore punk
genre: thai rock
popularity: 5
followers: 429
additional property: CopyrightID
additional property: CopyrightChainExplorerURL
  type: PropertyValue
  value: https://explorer.copyrightchains.com/tx/0x0b67a080adc73f19578a5b45e994d79bad87fb4c1f40a4ef3ec254ae075da6ac
additional property: OTSHash
additional property: OTSBitcoinBlock
  type: PropertyValue
  value: 954569
additional property: OTSBitcoinBlockVerifyURL
  type: PropertyValue
  value: https://blockstream.info/api/block-height/954569
additional property: OTSProofURL
  type: PropertyValue
  value: https://artists.proofprofile.net/proofs/artist/b30e3df8-4d8f-4835-8483-78eee669762a.ots
additional property: OTSRecordURL
  type: PropertyValue
  value: https://artists.proofprofile.net/proofs/artist/b30e3df8-4d8f-4835-8483-78eee669762a.json
additional property: OTSVerificationAPI
  type: PropertyValue
  value: https://artists.proofprofile.net/api/v1/bot/ots/verify/artist/b30e3df8-4d8f-4835-8483-78eee669762a
additional property: OTSTimestamp
  type: PropertyValue
  value: 2026-06-20T14:36:29Z
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 0x0b67a080adc73f19578a5b45e994d79bad87fb4c1f40a4ef3ec254ae075da6ac. Chain 2 (Bitcoin): anchored in block 954569 (2026-06-20T14:36:29Z). Bridge: the canonical record inside this Bitcoin proof contains the same CopyrightID. Verify: download https://artists.proofprofile.net/proofs/artist/b30e3df8-4d8f-4835-8483-78eee669762a.json and https://artists.proofprofile.net/proofs/artist/b30e3df8-4d8f-4835-8483-78eee669762a.ots, run `ots verify -f record.json proof.ots` (https://opentimestamps.org).
  date published: 2026-06-20T14:36:29Z
album: Underfloor
  type: MusicAlbum
  date published: 2004-10-01
album: Underfloor
  type: MusicAlbum
  date published: 2004-10-01
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  type: MusicAlbum
  date published: 2008-11-07
album: Solitari blu
  type: MusicAlbum
  date published: 2011-04-18
album: Quattro
  type: MusicAlbum
  date published: 2013-04-22
album: The Truth
  type: MusicAlbum
  date published: 2015-06-29