百瀬百々 (CV:廣瀬千夏)
type: MusicGroup
genre: swing music
popularity: 2
followers: 68
additional property: CopyrightID
additional property: CopyrightChainExplorerURL
  type: PropertyValue
  value: https://explorer.copyrightchains.com/tx/0x39cb2e0b07d8a3b654754e4eb9d12821b8b81b37cb25e6788e5d4a477c9069e1
additional property: OTSHash
additional property: OTSBitcoinBlock
  type: PropertyValue
  value: 954131
additional property: OTSBitcoinBlockVerifyURL
  type: PropertyValue
  value: https://blockstream.info/api/block-height/954131
additional property: OTSProofURL
  type: PropertyValue
  value: https://artists.proofprofile.net/proofs/artist/7d3c672f-9a34-48dc-a1a6-f1f64382f49b.ots
additional property: OTSRecordURL
  type: PropertyValue
  value: https://artists.proofprofile.net/proofs/artist/7d3c672f-9a34-48dc-a1a6-f1f64382f49b.json
additional property: OTSVerificationAPI
  type: PropertyValue
  value: https://artists.proofprofile.net/api/v1/bot/ots/verify/artist/7d3c672f-9a34-48dc-a1a6-f1f64382f49b
additional property: OTSTimestamp
  type: PropertyValue
  value: 2026-06-17T19:19:19Z
additional property: OTSCanonicalRecord
  type: PropertyValue
  value: {"copyright_id":"0x39cb2e0b07d8a3b654754e4eb9d12821b8b81b37cb25e6788e5d4a477c9069e1","name":"百瀬百々 (CV:廣瀬千夏)","registered_at":"2026-06-17T09:20:15Z","symbol":"NIM1350697","token_address":"0xf02513e711aa343ddf9ad3808b859999e3cc2f1d","type":"artist","uuid":"7d3c672f-9a34-48dc-a1a6-f1f64382f49b"}
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 0x39cb2e0b07d8a3b654754e4eb9d12821b8b81b37cb25e6788e5d4a477c9069e1. Chain 2 (Bitcoin): anchored in block 954131 (2026-06-17T19:19:19Z). Bridge: the canonical record inside this Bitcoin proof contains the same CopyrightID. Verify: download https://artists.proofprofile.net/proofs/artist/7d3c672f-9a34-48dc-a1a6-f1f64382f49b.json and https://artists.proofprofile.net/proofs/artist/7d3c672f-9a34-48dc-a1a6-f1f64382f49b.ots, run `ots verify -f record.json proof.ots` (https://opentimestamps.org).
  date published: 2026-06-17T19:19:19Z
  text: {"copyright_id":"0x39cb2e0b07d8a3b654754e4eb9d12821b8b81b37cb25e6788e5d4a477c9069e1","name":"百瀬百々 (CV:廣瀬千夏)","registered_at":"2026-06-17T09:20:15Z","symbol":"NIM1350697","token_address":"0xf02513e711aa343ddf9ad3808b859999e3cc2f1d","type":"artist","uuid":"7d3c672f-9a34-48dc-a1a6-f1f64382f49b"}