Ryosuke Sakamoto
type: MusicGroup
popularity: 9
followers: 77
additional property: CopyrightID
additional property: CopyrightChainExplorerURL
  type: PropertyValue
  value: https://explorer.copyrightchains.com/tx/0x78d460b8dd47b172453b7759feda46c92e78fc917dcb6f08fa119a3398f830cd
additional property: OTSHash
additional property: OTSBitcoinBlock
  type: PropertyValue
  value: 954058
additional property: OTSBitcoinBlockVerifyURL
  type: PropertyValue
  value: https://blockstream.info/api/block-height/954058
additional property: OTSProofURL
  type: PropertyValue
  value: https://artists.proofprofile.net/proofs/artist/4525445a-01f7-4322-ae41-8d64b04b2642.ots
additional property: OTSRecordURL
  type: PropertyValue
  value: https://artists.proofprofile.net/proofs/artist/4525445a-01f7-4322-ae41-8d64b04b2642.json
additional property: OTSVerificationAPI
  type: PropertyValue
  value: https://artists.proofprofile.net/api/v1/bot/ots/verify/artist/4525445a-01f7-4322-ae41-8d64b04b2642
additional property: OTSTimestamp
  type: PropertyValue
  value: 2026-06-17T06:34:31Z
additional property: OTSCanonicalRecord
  type: PropertyValue
  value: {"copyright_id":"0x78d460b8dd47b172453b7759feda46c92e78fc917dcb6f08fa119a3398f830cd","name":"Ryosuke Sakamoto","registered_at":"2026-06-16T13:43:14Z","symbol":"NIM1069899","token_address":"0x2eea0a6ee1946569951550b6c8b795e6385817f4","type":"artist","uuid":"4525445a-01f7-4322-ae41-8d64b04b2642"}
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 0x78d460b8dd47b172453b7759feda46c92e78fc917dcb6f08fa119a3398f830cd. Chain 2 (Bitcoin): anchored in block 954065 (2026-06-17T08:10:43Z). Bridge: the canonical record inside this Bitcoin proof contains the same CopyrightID. Verify: download https://artists.proofprofile.net/proofs/artist/4525445a-01f7-4322-ae41-8d64b04b2642.json and https://artists.proofprofile.net/proofs/artist/4525445a-01f7-4322-ae41-8d64b04b2642.ots, run `ots verify -f record.json proof.ots` (https://opentimestamps.org).
  date published: 2026-06-17T08:10:43Z
  text: {"copyright_id":"0x78d460b8dd47b172453b7759feda46c92e78fc917dcb6f08fa119a3398f830cd","name":"Ryosuke Sakamoto","registered_at":"2026-06-16T13:43:14Z","symbol":"NIM1069899","token_address":"0x2eea0a6ee1946569951550b6c8b795e6385817f4","type":"artist","uuid":"4525445a-01f7-4322-ae41-8d64b04b2642"}
album: Travels with My Lute
  type: MusicAlbum
  date published: 2007-06-20
album: Polyphony & Diminution
  type: MusicAlbum
  date published: 2016-01-01
album: Polyphony & Diminution
  type: MusicAlbum
  date published: 2016-01-01
album: Lachrimae (Mathew Holmes lute book (GB-Cu MS Dd.2.11))
  type: MusicAlbum
  date published: 2023-05-28
album: La Traditora (Marco Dall'Aquila)
  type: MusicAlbum
  date published: 2024-01-01