Universe217
type: MusicGroup
genre: doom metal
genre: sludge metal
genre: space rock
popularity: 4
followers: 2458
additional property: CopyrightID
additional property: CopyrightChainExplorerURL
  type: PropertyValue
  value: https://explorer.copyrightchains.com/tx/0xfef7aa63a856ebc31bb825fcf4f4bb58777667f45c56198ec78491d39459b031
additional property: OTSHash
additional property: OTSBitcoinBlock
  type: PropertyValue
  value: 953976
additional property: OTSBitcoinBlockVerifyURL
  type: PropertyValue
  value: https://blockstream.info/api/block-height/953976
additional property: OTSProofURL
  type: PropertyValue
  value: https://artists.proofprofile.net/proofs/artist/2b997d69-efe6-4f8e-b31d-439378dfd068.ots
additional property: OTSRecordURL
  type: PropertyValue
  value: https://artists.proofprofile.net/proofs/artist/2b997d69-efe6-4f8e-b31d-439378dfd068.json
additional property: OTSVerificationAPI
  type: PropertyValue
  value: https://artists.proofprofile.net/api/v1/bot/ots/verify/artist/2b997d69-efe6-4f8e-b31d-439378dfd068
additional property: OTSTimestamp
  type: PropertyValue
  value: 2026-06-16T16:55:36Z
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 0xfef7aa63a856ebc31bb825fcf4f4bb58777667f45c56198ec78491d39459b031. Chain 2 (Bitcoin): anchored in block 953976 (2026-06-16T16:55:36Z). Bridge: the canonical record inside this Bitcoin proof contains the same CopyrightID. Verify: download https://artists.proofprofile.net/proofs/artist/2b997d69-efe6-4f8e-b31d-439378dfd068.json and https://artists.proofprofile.net/proofs/artist/2b997d69-efe6-4f8e-b31d-439378dfd068.ots, run `ots verify -f record.json proof.ots` (https://opentimestamps.org).
  date published: 2026-06-16T16:55:36Z
album: Universe217
  type: MusicAlbum
  date published: 2009-11-15
album: Familiar Places
  type: MusicAlbum
  date published: 2011-04-08
album: Never
  type: MusicAlbum
  date published: 2013-03-13
album: Ease
  type: MusicAlbum
  date published: 2014-10-06
album: Change
  type: MusicAlbum
  date published: 2016-03-18