神園さやか
type: MusicGroup
genre: kayokyoku
popularity: 2
followers: 232
additional property: CopyrightID
additional property: CopyrightChainExplorerURL
  type: PropertyValue
  value: https://explorer.copyrightchains.com/tx/0x1dd77fe95b4834e0f88110dd6503a362ff2b2759547101726acccde2e401740f
additional property: OTSHash
additional property: OTSBitcoinBlock
  type: PropertyValue
  value: 954342
additional property: OTSBitcoinBlockVerifyURL
  type: PropertyValue
  value: https://blockstream.info/api/block-height/954342
additional property: OTSProofURL
  type: PropertyValue
  value: https://artists.proofprofile.net/proofs/artist/91e77246-5381-4185-8ff0-298f8e12d970.ots
additional property: OTSRecordURL
  type: PropertyValue
  value: https://artists.proofprofile.net/proofs/artist/91e77246-5381-4185-8ff0-298f8e12d970.json
additional property: OTSVerificationAPI
  type: PropertyValue
  value: https://artists.proofprofile.net/api/v1/bot/ots/verify/artist/91e77246-5381-4185-8ff0-298f8e12d970
additional property: OTSTimestamp
  type: PropertyValue
  value: 2026-06-19T03:22:39Z
additional property: OTSCanonicalRecord
  type: PropertyValue
  value: {"copyright_id":"0x1dd77fe95b4834e0f88110dd6503a362ff2b2759547101726acccde2e401740f","name":"神園さやか","registered_at":"2026-06-17T16:31:27Z","symbol":"NIM1453504","token_address":"0xaab02ef948dad781874d8c259d2811fa7f164175","type":"artist","uuid":"91e77246-5381-4185-8ff0-298f8e12d970"}
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 0x1dd77fe95b4834e0f88110dd6503a362ff2b2759547101726acccde2e401740f. Chain 2 (Bitcoin): anchored in block 954342 (2026-06-19T03:22:39Z). Bridge: the canonical record inside this Bitcoin proof contains the same CopyrightID. Verify: download https://artists.proofprofile.net/proofs/artist/91e77246-5381-4185-8ff0-298f8e12d970.json and https://artists.proofprofile.net/proofs/artist/91e77246-5381-4185-8ff0-298f8e12d970.ots, run `ots verify -f record.json proof.ots` (https://opentimestamps.org).
  date published: 2026-06-19T03:22:39Z
  text: {"copyright_id":"0x1dd77fe95b4834e0f88110dd6503a362ff2b2759547101726acccde2e401740f","name":"神園さやか","registered_at":"2026-06-17T16:31:27Z","symbol":"NIM1453504","token_address":"0xaab02ef948dad781874d8c259d2811fa7f164175","type":"artist","uuid":"91e77246-5381-4185-8ff0-298f8e12d970"}
album: POLARIS
  type: MusicAlbum
  date published: 2018-12-02
album: again
  type: MusicAlbum
  date published: 2020-01-12
album: Vogue
  type: MusicAlbum
  date published: 2021-12-08
album: 変わらない日々の中に
  type: MusicAlbum
  date published: 2023-01-16
album: Step
  type: MusicAlbum
  date published: 2024-03-17
album: You're the One
  type: MusicAlbum
  date published: 2024-05-26
album: You're the One
  type: MusicAlbum
  date published: 2024-07-31
album: Blue Rosa
  type: MusicAlbum
  date published: 2025-07-16