Kiyoshi Osawa
type: MusicGroup
popularity: 4
followers: 75
additional property: CopyrightID
additional property: CopyrightChainExplorerURL
  type: PropertyValue
  value: https://explorer.copyrightchains.com/tx/0xa6b0fdf4c40e4972b24b427021e17d9f81f4e2760e94b3b7a642816197714694
additional property: OTSHash
additional property: OTSBitcoinBlock
  type: PropertyValue
  value: 954667
additional property: OTSBitcoinBlockVerifyURL
  type: PropertyValue
  value: https://blockstream.info/api/block-height/954667
additional property: OTSProofURL
  type: PropertyValue
  value: https://artists.proofprofile.net/proofs/artist/aeded074-e32d-4410-a577-7205cb9f7fa0.ots
additional property: OTSRecordURL
  type: PropertyValue
  value: https://artists.proofprofile.net/proofs/artist/aeded074-e32d-4410-a577-7205cb9f7fa0.json
additional property: OTSVerificationAPI
  type: PropertyValue
  value: https://artists.proofprofile.net/api/v1/bot/ots/verify/artist/aeded074-e32d-4410-a577-7205cb9f7fa0
additional property: OTSTimestamp
  type: PropertyValue
  value: 2026-06-21T07:29:20Z
additional property: OTSCanonicalRecord
  type: PropertyValue
  value: {"copyright_id":"0xa6b0fdf4c40e4972b24b427021e17d9f81f4e2760e94b3b7a642816197714694","name":"Kiyoshi Osawa","registered_at":"2026-06-20T11:44:40Z","symbol":"NIM1603942","token_address":"0x0067e23653294825e3bb759f4f1b2095625d9f3b","type":"artist","uuid":"aeded074-e32d-4410-a577-7205cb9f7fa0"}
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 0xa6b0fdf4c40e4972b24b427021e17d9f81f4e2760e94b3b7a642816197714694. Chain 2 (Bitcoin): anchored in block 954667 (2026-06-21T07:29:20Z). Bridge: the canonical record inside this Bitcoin proof contains the same CopyrightID. Verify: download https://artists.proofprofile.net/proofs/artist/aeded074-e32d-4410-a577-7205cb9f7fa0.json and https://artists.proofprofile.net/proofs/artist/aeded074-e32d-4410-a577-7205cb9f7fa0.ots, run `ots verify -f record.json proof.ots` (https://opentimestamps.org).
  date published: 2026-06-21T07:29:20Z
  text: {"copyright_id":"0xa6b0fdf4c40e4972b24b427021e17d9f81f4e2760e94b3b7a642816197714694","name":"Kiyoshi Osawa","registered_at":"2026-06-20T11:44:40Z","symbol":"NIM1603942","token_address":"0x0067e23653294825e3bb759f4f1b2095625d9f3b","type":"artist","uuid":"aeded074-e32d-4410-a577-7205cb9f7fa0"}
album: Nadie Te Quiere
  type: MusicAlbum
  date published: 2024-02-18
album: Décima
  type: MusicAlbum
  date published: 2024-06-13
album: Súper Veloz
  type: MusicAlbum
  date published: 2025-10-22