Chu's day.
type: MusicGroup
genre: j-rock
popularity: 3
followers: 1596
additional property: CopyrightID
additional property: CopyrightChainExplorerURL
  type: PropertyValue
  value: https://explorer.copyrightchains.com/tx/0x428092f0eaf42c0bcf6c93e4faf87e5c2fee1832bcfc61a2f279f5e4f81e1089
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/bf3d2d5f-1ca5-4be4-9077-29085c225dd2.ots
additional property: OTSRecordURL
  type: PropertyValue
  value: https://artists.proofprofile.net/proofs/artist/bf3d2d5f-1ca5-4be4-9077-29085c225dd2.json
additional property: OTSVerificationAPI
  type: PropertyValue
  value: https://artists.proofprofile.net/api/v1/bot/ots/verify/artist/bf3d2d5f-1ca5-4be4-9077-29085c225dd2
additional property: OTSTimestamp
  type: PropertyValue
  value: 2026-06-21T07:29:20Z
additional property: OTSCanonicalRecord
  type: PropertyValue
  value: {"copyright_id":"0x428092f0eaf42c0bcf6c93e4faf87e5c2fee1832bcfc61a2f279f5e4f81e1089","name":"Chu's day.","registered_at":"2026-06-20T18:42:07Z","symbol":"NIM1681925","token_address":"0xd295cdca6d03b3cb119a942cddc0ef9489871323","type":"artist","uuid":"bf3d2d5f-1ca5-4be4-9077-29085c225dd2"}
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 0x428092f0eaf42c0bcf6c93e4faf87e5c2fee1832bcfc61a2f279f5e4f81e1089. 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/bf3d2d5f-1ca5-4be4-9077-29085c225dd2.json and https://artists.proofprofile.net/proofs/artist/bf3d2d5f-1ca5-4be4-9077-29085c225dd2.ots, run `ots verify -f record.json proof.ots` (https://opentimestamps.org).
  date published: 2026-06-21T07:29:20Z
  text: {"copyright_id":"0x428092f0eaf42c0bcf6c93e4faf87e5c2fee1832bcfc61a2f279f5e4f81e1089","name":"Chu's day.","registered_at":"2026-06-20T18:42:07Z","symbol":"NIM1681925","token_address":"0xd295cdca6d03b3cb119a942cddc0ef9489871323","type":"artist","uuid":"bf3d2d5f-1ca5-4be4-9077-29085c225dd2"}
album: Have a nice Chu's day.
  type: MusicAlbum
  date published: 1915-08-12
album: Have a nice Chu’s day.
  type: MusicAlbum
  date published: 1915-08-12
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album: Have a nice Chu's day.
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  type: MusicAlbum
  date published: 2016-02-10
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  type: MusicAlbum
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