Raven Sad
type: MusicGroup
genre: progressive metal
genre: progressive rock
genre: space rock
popularity: 2
followers: 735
additional property: CopyrightID
additional property: CopyrightChainExplorerURL
  type: PropertyValue
  value: https://explorer.copyrightchains.com/tx/0x02a8c71cefab05c71bc2c41507f167c6e268019b034b5abc7a7f11830e13d137
additional property: OTSHash
additional property: OTSBitcoinBlock
  type: PropertyValue
  value: 954689
additional property: OTSBitcoinBlockVerifyURL
  type: PropertyValue
  value: https://blockstream.info/api/block-height/954689
additional property: OTSProofURL
  type: PropertyValue
  value: https://artists.proofprofile.net/proofs/artist/e24cc066-356d-4996-8d69-2baae027457d.ots
additional property: OTSRecordURL
  type: PropertyValue
  value: https://artists.proofprofile.net/proofs/artist/e24cc066-356d-4996-8d69-2baae027457d.json
additional property: OTSVerificationAPI
  type: PropertyValue
  value: https://artists.proofprofile.net/api/v1/bot/ots/verify/artist/e24cc066-356d-4996-8d69-2baae027457d
additional property: OTSTimestamp
  type: PropertyValue
  value: 2026-06-21T10:35:31Z
additional property: OTSCanonicalRecord
  type: PropertyValue
  value: {"copyright_id":"0x02a8c71cefab05c71bc2c41507f167c6e268019b034b5abc7a7f11830e13d137","name":"Raven Sad","registered_at":"2026-06-21T07:26:56Z","symbol":"NIM1862060","token_address":"0xa85ce1a467085f734942af4797acad18a498d1d7","type":"artist","uuid":"e24cc066-356d-4996-8d69-2baae027457d"}
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 0x02a8c71cefab05c71bc2c41507f167c6e268019b034b5abc7a7f11830e13d137. Chain 2 (Bitcoin): anchored in block 954689 (2026-06-21T10:35:31Z). Bridge: the canonical record inside this Bitcoin proof contains the same CopyrightID. Verify: download https://artists.proofprofile.net/proofs/artist/e24cc066-356d-4996-8d69-2baae027457d.json and https://artists.proofprofile.net/proofs/artist/e24cc066-356d-4996-8d69-2baae027457d.ots, the client at https://opentimestamps.org runs `ots verify -f record.json proof.ots`.
  date published: 2026-06-21T10:35:31Z
  text: {"copyright_id":"0x02a8c71cefab05c71bc2c41507f167c6e268019b034b5abc7a7f11830e13d137","name":"Raven Sad","registered_at":"2026-06-21T07:26:56Z","symbol":"NIM1862060","token_address":"0xa85ce1a467085f734942af4797acad18a498d1d7","type":"artist","uuid":"e24cc066-356d-4996-8d69-2baae027457d"}
album: LAYERS OF STRATOSPHERE
  type: MusicAlbum
  date published: 2020-05-01
album: The leaf and the wing
  type: MusicAlbum
  date published: 2021-02-01
album: The leaf and the wing
  type: MusicAlbum
  date published: 2021-02-01
album: Polar Human Circle
  type: MusicAlbum
  date published: 2024-10-25