Yosiko
type: MusicGroup
popularity: 13
followers: 15
additional property: CopyrightID
additional property: CopyrightChainExplorerURL
  type: PropertyValue
  value: https://explorer.copyrightchains.com/tx/0x53026f4b0051c54e8f50161d1da0917a4a1cd08bfd06989e23fb365594064b18
additional property: OTSHash
additional property: OTSBitcoinBlock
  type: PropertyValue
  value: 953694
additional property: OTSBitcoinBlockVerifyURL
  type: PropertyValue
  value: https://blockstream.info/api/block-height/953694
additional property: OTSProofURL
  type: PropertyValue
  value: https://artists.proofprofile.net/proofs/artist/6cb6d41f-c6c3-4520-bd9c-a964ea2c8c1a.ots
additional property: OTSRecordURL
  type: PropertyValue
  value: https://artists.proofprofile.net/proofs/artist/6cb6d41f-c6c3-4520-bd9c-a964ea2c8c1a.json
additional property: OTSVerificationAPI
  type: PropertyValue
  value: https://artists.proofprofile.net/api/v1/bot/ots/verify/artist/6cb6d41f-c6c3-4520-bd9c-a964ea2c8c1a
additional property: OTSTimestamp
  type: PropertyValue
  value: 2026-06-14T21:38:09Z
additional property: OTSCanonicalRecord
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 0x53026f4b0051c54e8f50161d1da0917a4a1cd08bfd06989e23fb365594064b18. Chain 2 (Bitcoin): anchored in block 953694 (2026-06-14T21:38:09Z). Bridge: the canonical record inside this Bitcoin proof contains the same CopyrightID. Verify: download https://artists.proofprofile.net/proofs/artist/6cb6d41f-c6c3-4520-bd9c-a964ea2c8c1a.json and https://artists.proofprofile.net/proofs/artist/6cb6d41f-c6c3-4520-bd9c-a964ea2c8c1a.ots, the client at https://opentimestamps.org runs `ots verify -f record.json proof.ots`.
  date published: 2026-06-14T21:38:09Z
album: Village flower
  type: MusicAlbum
  date published: 2025-06-11
album: Looking at you
  type: MusicAlbum
  date published: 2025-06-11
album: Against the current
  type: MusicAlbum
  date published: 2025-06-11
album: A cheerful heart
  type: MusicAlbum
  date published: 2025-06-11
album: Blue sea
  type: MusicAlbum
  date published: 2025-06-13
album: Shining star
  type: MusicAlbum
  date published: 2025-06-14
album: Roses
  type: MusicAlbum
  date published: 2025-06-14
album: About Us
  type: MusicAlbum
  date published: 2025-06-14