Hildegard(CV.Yu Serizawa)
type: MusicGroup
genre: anime
popularity: 3
followers: 101
additional property: CopyrightID
additional property: CopyrightChainExplorerURL
  type: PropertyValue
  value: https://explorer.copyrightchains.com/tx/0xdfbd10fb1078066f52489051ee6e75273be5f9dc2ca61ca48c34a696f753fe01
additional property: OTSHash
additional property: OTSBitcoinBlock
  type: PropertyValue
  value: 954717
additional property: OTSBitcoinBlockVerifyURL
  type: PropertyValue
  value: https://blockstream.info/api/block-height/954717
additional property: OTSProofURL
  type: PropertyValue
  value: https://artists.proofprofile.net/proofs/artist/f363576e-2bcb-40f1-97b0-6c7d53bcca92.ots
additional property: OTSRecordURL
  type: PropertyValue
  value: https://artists.proofprofile.net/proofs/artist/f363576e-2bcb-40f1-97b0-6c7d53bcca92.json
additional property: OTSVerificationAPI
  type: PropertyValue
  value: https://artists.proofprofile.net/api/v1/bot/ots/verify/artist/f363576e-2bcb-40f1-97b0-6c7d53bcca92
additional property: OTSTimestamp
  type: PropertyValue
  value: 2026-06-21T15:47:51Z
additional property: OTSCanonicalRecord
  type: PropertyValue
  value: {"copyright_id":"0xdfbd10fb1078066f52489051ee6e75273be5f9dc2ca61ca48c34a696f753fe01","name":"Hildegard(CV.Yu Serizawa)","registered_at":"2026-06-21T14:17:03Z","symbol":"NIM1943644","token_address":"0x326f1d5211a494a9c32b6f15ab843d6ddb69b297","type":"artist","uuid":"f363576e-2bcb-40f1-97b0-6c7d53bcca92"}
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 0xdfbd10fb1078066f52489051ee6e75273be5f9dc2ca61ca48c34a696f753fe01. Chain 2 (Bitcoin): anchored in block 954717 (2026-06-21T15:47:51Z). Bridge: the canonical record inside this Bitcoin proof contains the same CopyrightID. Verify: download https://artists.proofprofile.net/proofs/artist/f363576e-2bcb-40f1-97b0-6c7d53bcca92.json and https://artists.proofprofile.net/proofs/artist/f363576e-2bcb-40f1-97b0-6c7d53bcca92.ots, run `ots verify -f record.json proof.ots` (https://opentimestamps.org).
  date published: 2026-06-21T15:47:51Z
  text: {"copyright_id":"0xdfbd10fb1078066f52489051ee6e75273be5f9dc2ca61ca48c34a696f753fe01","name":"Hildegard(CV.Yu Serizawa)","registered_at":"2026-06-21T14:17:03Z","symbol":"NIM1943644","token_address":"0x326f1d5211a494a9c32b6f15ab843d6ddb69b297","type":"artist","uuid":"f363576e-2bcb-40f1-97b0-6c7d53bcca92"}
album: Isekai Jewelry (Hildegard Ver.)
  type: MusicAlbum
  date published: 2023-06-19