Yu Hayashi
type: MusicGroup
popularity: 2
followers: 143
additional property: CopyrightID
additional property: CopyrightChainExplorerURL
  type: PropertyValue
  value: https://explorer.copyrightchains.com/tx/0xa77009f44a05d97670e5647faea2c1f3ae9828571e8a832e63349d586ea596cc
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/cc9b96a3-9b98-416d-a759-1b1c478812b4.ots
additional property: OTSRecordURL
  type: PropertyValue
  value: https://artists.proofprofile.net/proofs/artist/cc9b96a3-9b98-416d-a759-1b1c478812b4.json
additional property: OTSVerificationAPI
  type: PropertyValue
  value: https://artists.proofprofile.net/api/v1/bot/ots/verify/artist/cc9b96a3-9b98-416d-a759-1b1c478812b4
additional property: OTSTimestamp
  type: PropertyValue
  value: 2026-06-21T07:29:20Z
additional property: OTSCanonicalRecord
  type: PropertyValue
  value: {"copyright_id":"0xa77009f44a05d97670e5647faea2c1f3ae9828571e8a832e63349d586ea596cc","name":"Yu Hayashi","registered_at":"2026-06-20T23:31:21Z","symbol":"NIM1749940","token_address":"0x10e7c6acf3dcc4f235140ad2644946ae480a35a7","type":"artist","uuid":"cc9b96a3-9b98-416d-a759-1b1c478812b4"}
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 0xa77009f44a05d97670e5647faea2c1f3ae9828571e8a832e63349d586ea596cc. 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/cc9b96a3-9b98-416d-a759-1b1c478812b4.json and https://artists.proofprofile.net/proofs/artist/cc9b96a3-9b98-416d-a759-1b1c478812b4.ots, run `ots verify -f record.json proof.ots` (https://opentimestamps.org).
  date published: 2026-06-21T07:29:20Z
  text: {"copyright_id":"0xa77009f44a05d97670e5647faea2c1f3ae9828571e8a832e63349d586ea596cc","name":"Yu Hayashi","registered_at":"2026-06-20T23:31:21Z","symbol":"NIM1749940","token_address":"0x10e7c6acf3dcc4f235140ad2644946ae480a35a7","type":"artist","uuid":"cc9b96a3-9b98-416d-a759-1b1c478812b4"}
album: Summer Slumber
  type: MusicAlbum
  date published: 2018-03-03
album: slumbers selection
  type: MusicAlbum
  date published: 2020-03-01
album: The Kebab Dance
  type: MusicAlbum
  date published: 2020-05-15
album: Bed Room Session
  type: MusicAlbum
  date published: 2020-06-15
album: LOOPER POP
  type: MusicAlbum
  date published: 2021-03-31
album: Popular BGM Works
  type: MusicAlbum
  date published: 2023-01-28
album: Fun Break Time
  type: MusicAlbum
  date published: 2024-08-01
album: Keep Well
  type: MusicAlbum
  date published: 2024-08-01
album: Night Plankton
  type: MusicAlbum
  date published: 2025-02-03