さくらまや
type: MusicGroup
genre: enka
genre: kayokyoku
popularity: 2
followers: 147
additional property: CopyrightID
additional property: CopyrightChainExplorerURL
  type: PropertyValue
  value: https://explorer.copyrightchains.com/tx/0x4d39f241b7090b16b7e2bfa3e3d4da0594d1f39965db7dffd8c68095db862c6a
additional property: OTSHash
additional property: OTSBitcoinBlock
  type: PropertyValue
  value: 953909
additional property: OTSBitcoinBlockVerifyURL
  type: PropertyValue
  value: https://blockstream.info/api/block-height/953909
additional property: OTSProofURL
  type: PropertyValue
  value: https://artists.proofprofile.net/proofs/artist/0e4663e9-5d87-4681-95d4-60cd996b19eb.ots
additional property: OTSRecordURL
  type: PropertyValue
  value: https://artists.proofprofile.net/proofs/artist/0e4663e9-5d87-4681-95d4-60cd996b19eb.json
additional property: OTSVerificationAPI
  type: PropertyValue
  value: https://artists.proofprofile.net/api/v1/bot/ots/verify/artist/0e4663e9-5d87-4681-95d4-60cd996b19eb
additional property: OTSTimestamp
  type: PropertyValue
  value: 2026-06-16T07:53:13Z
additional property: OTSCanonicalRecord
  type: PropertyValue
  value: {"copyright_id":"0x4d39f241b7090b16b7e2bfa3e3d4da0594d1f39965db7dffd8c68095db862c6a","name":"さくらまや","registered_at":"2026-06-15T18:34:46Z","symbol":"NIM0795784","token_address":"0x0b0455ab7d52a2da724504530a45f796c44a4965","type":"artist","uuid":"0e4663e9-5d87-4681-95d4-60cd996b19eb"}
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 0x4d39f241b7090b16b7e2bfa3e3d4da0594d1f39965db7dffd8c68095db862c6a. Chain 2 (Bitcoin): anchored in block 953909 (2026-06-16T07:53:13Z). Bridge: the canonical record inside this Bitcoin proof contains the same CopyrightID. Verify: download https://artists.proofprofile.net/proofs/artist/0e4663e9-5d87-4681-95d4-60cd996b19eb.json and https://artists.proofprofile.net/proofs/artist/0e4663e9-5d87-4681-95d4-60cd996b19eb.ots, run `ots verify -f record.json proof.ots` (https://opentimestamps.org).
  date published: 2026-06-16T07:53:13Z
  text: {"copyright_id":"0x4d39f241b7090b16b7e2bfa3e3d4da0594d1f39965db7dffd8c68095db862c6a","name":"さくらまや","registered_at":"2026-06-15T18:34:46Z","symbol":"NIM0795784","token_address":"0x0b0455ab7d52a2da724504530a45f796c44a4965","type":"artist","uuid":"0e4663e9-5d87-4681-95d4-60cd996b19eb"}
album: 大漁まつり／ねんころ子守唄
  type: MusicAlbum
  date published: 2008-12-03
album: 奇跡はここにある
  type: MusicAlbum
  date published: 2013-11-06