やうこ
type: MusicGroup
popularity: 2
followers: 25
additional property: CopyrightID
additional property: CopyrightChainExplorerURL
  type: PropertyValue
  value: https://explorer.copyrightchains.com/tx/0xf544f24b4811d5f8ea23a26367a6e5d0bdf69216b832aa1c452833fa8ed0cded
additional property: OTSHash
additional property: OTSBitcoinBlock
  type: PropertyValue
  value: 953860
additional property: OTSBitcoinBlockVerifyURL
  type: PropertyValue
  value: https://blockstream.info/api/block-height/953860
additional property: OTSProofURL
  type: PropertyValue
  value: https://artists.proofprofile.net/proofs/artist/035200c6-6fe0-4b7c-a375-8933cbdf1cc3.ots
additional property: OTSRecordURL
  type: PropertyValue
  value: https://artists.proofprofile.net/proofs/artist/035200c6-6fe0-4b7c-a375-8933cbdf1cc3.json
additional property: OTSVerificationAPI
  type: PropertyValue
  value: https://artists.proofprofile.net/api/v1/bot/ots/verify/artist/035200c6-6fe0-4b7c-a375-8933cbdf1cc3
additional property: OTSTimestamp
  type: PropertyValue
  value: 2026-06-15T23:55:46Z
additional property: OTSCanonicalRecord
  type: PropertyValue
  value: {"copyright_id":"0xf544f24b4811d5f8ea23a26367a6e5d0bdf69216b832aa1c452833fa8ed0cded","name":"やうこ","registered_at":"2026-06-15T14:39:47Z","symbol":"NIM0739692","token_address":"0x7a034b1abbc534c24f550f1d98e2099049d80f42","type":"artist","uuid":"035200c6-6fe0-4b7c-a375-8933cbdf1cc3"}
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 0xf544f24b4811d5f8ea23a26367a6e5d0bdf69216b832aa1c452833fa8ed0cded. Chain 2 (Bitcoin): anchored in block 953909 (2026-06-16T07:53:13Z). Bridge: the canonical record inside this Bitcoin proof contains the same CopyrightID. Verify: download https://artists.proofprofile.net/proofs/artist/035200c6-6fe0-4b7c-a375-8933cbdf1cc3.json and https://artists.proofprofile.net/proofs/artist/035200c6-6fe0-4b7c-a375-8933cbdf1cc3.ots, run `ots verify -f record.json proof.ots` (https://opentimestamps.org).
  date published: 2026-06-16T07:53:13Z
  text: {"copyright_id":"0xf544f24b4811d5f8ea23a26367a6e5d0bdf69216b832aa1c452833fa8ed0cded","name":"やうこ","registered_at":"2026-06-15T14:39:47Z","symbol":"NIM0739692","token_address":"0x7a034b1abbc534c24f550f1d98e2099049d80f42","type":"artist","uuid":"035200c6-6fe0-4b7c-a375-8933cbdf1cc3"}
album: Arabesque
  type: MusicAlbum
  date published: 2017-12-24
album: Yauchord vol.1
  type: MusicAlbum
  date published: 2020-06-01