秋田藤四郎(CV:山谷祥生)
type: MusicGroup
popularity: 18
followers: 34
additional property: CopyrightID
additional property: CopyrightChainExplorerURL
  type: PropertyValue
  value: https://explorer.copyrightchains.com/tx/0x5926575a58d39ece7c5da0a545c868239cf8bed65cd49c4a636dfcfb745b1ada
additional property: OTSHash
additional property: OTSBitcoinBlock
  type: PropertyValue
  value: 953697
additional property: OTSBitcoinBlockVerifyURL
  type: PropertyValue
  value: https://blockstream.info/api/block-height/953697
additional property: OTSProofURL
  type: PropertyValue
  value: https://artists.proofprofile.net/proofs/artist/73176273-36e4-4018-a4fb-6d47fc66e96f.ots
additional property: OTSRecordURL
  type: PropertyValue
  value: https://artists.proofprofile.net/proofs/artist/73176273-36e4-4018-a4fb-6d47fc66e96f.json
additional property: OTSVerificationAPI
  type: PropertyValue
  value: https://artists.proofprofile.net/api/v1/bot/ots/verify/artist/73176273-36e4-4018-a4fb-6d47fc66e96f
additional property: OTSTimestamp
  type: PropertyValue
  value: 2026-06-14T21:49:28Z
additional property: OTSCanonicalRecord
  type: PropertyValue
  value: {"copyright_id":"0x5926575a58d39ece7c5da0a545c868239cf8bed65cd49c4a636dfcfb745b1ada","name":"秋田藤四郎(CV:山谷祥生)","registered_at":"2026-06-14T16:37:32Z","symbol":"NIM0512465","token_address":"0x6cc8c39319443ba67cec7ee9a33d735b9a8888dc","type":"artist","uuid":"73176273-36e4-4018-a4fb-6d47fc66e96f"}
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 0x5926575a58d39ece7c5da0a545c868239cf8bed65cd49c4a636dfcfb745b1ada. Chain 2 (Bitcoin): anchored in block 953697 (2026-06-14T21:49:28Z). Bridge: the canonical record inside this Bitcoin proof contains the same CopyrightID. Verify: download https://artists.proofprofile.net/proofs/artist/73176273-36e4-4018-a4fb-6d47fc66e96f.json and https://artists.proofprofile.net/proofs/artist/73176273-36e4-4018-a4fb-6d47fc66e96f.ots, run `ots verify -f record.json proof.ots` (https://opentimestamps.org).
  date published: 2026-06-14T21:49:28Z
  text: {"copyright_id":"0x5926575a58d39ece7c5da0a545c868239cf8bed65cd49c4a636dfcfb745b1ada","name":"秋田藤四郎(CV:山谷祥生)","registered_at":"2026-06-14T16:37:32Z","symbol":"NIM0512465","token_address":"0x6cc8c39319443ba67cec7ee9a33d735b9a8888dc","type":"artist","uuid":"73176273-36e4-4018-a4fb-6d47fc66e96f"}