Leo Takami
type: MusicGroup
genre: experimental
popularity: 7
followers: 1734
additional property: CopyrightID
additional property: CopyrightChainExplorerURL
  type: PropertyValue
  value: https://explorer.copyrightchains.com/tx/0x62cc9ba2a0296915a23e0b1e0d02404ba1147f9c283835aafa7a97028cd79d0f
additional property: OTSHash
additional property: OTSBitcoinBlock
  type: PropertyValue
  value: 954631
additional property: OTSBitcoinBlockVerifyURL
  type: PropertyValue
  value: https://blockstream.info/api/block-height/954631
additional property: OTSProofURL
  type: PropertyValue
  value: https://artists.proofprofile.net/proofs/artist/d099a020-91f7-45af-b1ad-67b0d8f1d0bf.ots
additional property: OTSRecordURL
  type: PropertyValue
  value: https://artists.proofprofile.net/proofs/artist/d099a020-91f7-45af-b1ad-67b0d8f1d0bf.json
additional property: OTSVerificationAPI
  type: PropertyValue
  value: https://artists.proofprofile.net/api/v1/bot/ots/verify/artist/d099a020-91f7-45af-b1ad-67b0d8f1d0bf
additional property: OTSTimestamp
  type: PropertyValue
  value: 2026-06-21T02:46:24Z
additional property: OTSCanonicalRecord
  type: PropertyValue
  value: {"copyright_id":"0x62cc9ba2a0296915a23e0b1e0d02404ba1147f9c283835aafa7a97028cd79d0f","name":"Leo Takami","registered_at":"2026-06-21T00:42:29Z","symbol":"NIM1765408","token_address":"0x94cca735e79900c49be99a890d3d80081e084151","type":"artist","uuid":"d099a020-91f7-45af-b1ad-67b0d8f1d0bf"}
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 0x62cc9ba2a0296915a23e0b1e0d02404ba1147f9c283835aafa7a97028cd79d0f. Chain 2 (Bitcoin): anchored in block 954631 (2026-06-21T02:46:24Z). Bridge: the canonical record inside this Bitcoin proof contains the same CopyrightID. Verify: download https://artists.proofprofile.net/proofs/artist/d099a020-91f7-45af-b1ad-67b0d8f1d0bf.json and https://artists.proofprofile.net/proofs/artist/d099a020-91f7-45af-b1ad-67b0d8f1d0bf.ots, the client at https://opentimestamps.org runs `ots verify -f record.json proof.ots`.
  date published: 2026-06-21T02:46:24Z
  text: {"copyright_id":"0x62cc9ba2a0296915a23e0b1e0d02404ba1147f9c283835aafa7a97028cd79d0f","name":"Leo Takami","registered_at":"2026-06-21T00:42:29Z","symbol":"NIM1765408","token_address":"0x94cca735e79900c49be99a890d3d80081e084151","type":"artist","uuid":"d099a020-91f7-45af-b1ad-67b0d8f1d0bf"}
album: Tree of Life
  type: MusicAlbum
  date published: 2017-12-04
album: Unknown
  type: MusicAlbum
  date published: 2019-12-20
album: Felis Catus and Silence
  type: MusicAlbum
  date published: 2020-02-07
album: Felis Catus and Silence
  type: MusicAlbum
  date published: 2020-02-28
album: Felis Catus and Silence
  type: MusicAlbum
  date published: 2020-02-28
album: Next Door
  type: MusicAlbum
  date published: 2023-07-28
album: Next Door
  type: MusicAlbum
  date published: 2023-10-06