観世寿夫
type: MusicGroup
genre: japanese classical
genre: traditional music
popularity: 5
followers: 134
additional property: CopyrightID
additional property: CopyrightChainExplorerURL
  type: PropertyValue
  value: https://explorer.copyrightchains.com/tx/0x20e393484cd213cad4452d264e9d9e5f3e14357c8640dde3a3548eab3345e692
additional property: OTSHash
additional property: OTSBitcoinBlock
  type: PropertyValue
  value: 954174
additional property: OTSBitcoinBlockVerifyURL
  type: PropertyValue
  value: https://blockstream.info/api/block-height/954174
additional property: OTSProofURL
  type: PropertyValue
  value: https://artists.proofprofile.net/proofs/artist/7e0dd1ed-3103-407e-a6ae-aed5762b56fd.ots
additional property: OTSRecordURL
  type: PropertyValue
  value: https://artists.proofprofile.net/proofs/artist/7e0dd1ed-3103-407e-a6ae-aed5762b56fd.json
additional property: OTSVerificationAPI
  type: PropertyValue
  value: https://artists.proofprofile.net/api/v1/bot/ots/verify/artist/7e0dd1ed-3103-407e-a6ae-aed5762b56fd
additional property: OTSTimestamp
  type: PropertyValue
  value: 2026-06-18T03:01:36Z
additional property: OTSCanonicalRecord
  type: PropertyValue
  value: {"copyright_id":"0x20e393484cd213cad4452d264e9d9e5f3e14357c8640dde3a3548eab3345e692","name":"観世寿夫","registered_at":"2026-06-17T09:36:45Z","symbol":"NIM1354641","token_address":"0x37e7db4854303156edb4f3a84706f8162af3fa4b","type":"artist","uuid":"7e0dd1ed-3103-407e-a6ae-aed5762b56fd"}
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 0x20e393484cd213cad4452d264e9d9e5f3e14357c8640dde3a3548eab3345e692. Chain 2 (Bitcoin): anchored in block 954174 (2026-06-18T03:01:36Z). Bridge: the canonical record inside this Bitcoin proof contains the same CopyrightID. Verify: download https://artists.proofprofile.net/proofs/artist/7e0dd1ed-3103-407e-a6ae-aed5762b56fd.json and https://artists.proofprofile.net/proofs/artist/7e0dd1ed-3103-407e-a6ae-aed5762b56fd.ots, run `ots verify -f record.json proof.ots` (https://opentimestamps.org).
  date published: 2026-06-18T03:01:36Z
  text: {"copyright_id":"0x20e393484cd213cad4452d264e9d9e5f3e14357c8640dde3a3548eab3345e692","name":"観世寿夫","registered_at":"2026-06-17T09:36:45Z","symbol":"NIM1354641","token_address":"0x37e7db4854303156edb4f3a84706f8162af3fa4b","type":"artist","uuid":"7e0dd1ed-3103-407e-a6ae-aed5762b56fd"}
album: 観世流謡曲名曲集
  type: MusicAlbum
  date published: 1997-04-09
album: 「砧」「羽衣」 観世寿夫 至花の二曲
  type: MusicAlbum
  date published: 2009-08-26