sayu
type: MusicGroup
genre: surf rock
popularity: 15
followers: 64
additional property: CopyrightID
additional property: CopyrightChainExplorerURL
  type: PropertyValue
  value: https://explorer.copyrightchains.com/tx/0x747ee61217af8db4bb5255f1d510b94ee9e92c370d6e64d657912c1609f9f494
additional property: OTSHash
additional property: OTSBitcoinBlock
  type: PropertyValue
  value: 953746
additional property: OTSBitcoinBlockVerifyURL
  type: PropertyValue
  value: https://blockstream.info/api/block-height/953746
additional property: OTSProofURL
  type: PropertyValue
  value: https://artists.proofprofile.net/proofs/artist/a53d0f97-a669-437a-87cb-0ee325fc549b.ots
additional property: OTSRecordURL
  type: PropertyValue
  value: https://artists.proofprofile.net/proofs/artist/a53d0f97-a669-437a-87cb-0ee325fc549b.json
additional property: OTSVerificationAPI
  type: PropertyValue
  value: https://artists.proofprofile.net/api/v1/bot/ots/verify/artist/a53d0f97-a669-437a-87cb-0ee325fc549b
additional property: OTSTimestamp
  type: PropertyValue
  value: 2026-06-15T05:25:34Z
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
subject of: OpenTimestamps Proof of Existence
  type: DigitalDocument
  encoding format: application/vnd.opentimestamps.ots
  description: Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x747ee61217af8db4bb5255f1d510b94ee9e92c370d6e64d657912c1609f9f494. Chain 2 (Bitcoin): anchored in block 953746 (2026-06-15T05:25:34Z). Bridge: the canonical record inside this Bitcoin proof contains the same CopyrightID. Verify: download https://artists.proofprofile.net/proofs/artist/a53d0f97-a669-437a-87cb-0ee325fc549b.json and https://artists.proofprofile.net/proofs/artist/a53d0f97-a669-437a-87cb-0ee325fc549b.ots, run `ots verify -f record.json proof.ots` (https://opentimestamps.org).
  date published: 2026-06-15T05:25:34Z
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  type: MusicAlbum
  date published: 2014-06-18
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  type: MusicAlbum
  date published: 2014-09-17
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  type: MusicAlbum
  date published: 2016-04-22
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  type: MusicAlbum
  date published: 2016-04-22
album: SAYU
  type: MusicAlbum
  date published: 2019-09-07
album: SAYU
  type: MusicAlbum
  date published: 2019-09-07
album: Rainy Day
  type: MusicAlbum
  date published: 2023-04-15
album: blue
  type: MusicAlbum
  date published: 2024-05-22
album: Farewell
  type: MusicAlbum
  date published: 2024-07-18
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  type: MusicAlbum
  date published: 2024-08-06
album: bye
  type: MusicAlbum
  date published: 2024-08-28