Iori Izumi (CV: Toshiki Masuda)
type: MusicGroup
popularity: 13
followers: 334
additional property: CopyrightID
additional property: CopyrightChainExplorerURL
  type: PropertyValue
  value: https://explorer.copyrightchains.com/tx/0xdf7f2392ef2d62f04248203aa2564f8540829dfa640102eaf2240c0feaed1ca9
additional property: OTSHash
additional property: OTSBitcoinBlock
  type: PropertyValue
  value: 953610
additional property: OTSBitcoinBlockVerifyURL
  type: PropertyValue
  value: https://blockstream.info/api/block-height/953610
additional property: OTSProofURL
  type: PropertyValue
  value: https://artists.proofprofile.net/proofs/artist/12fb8494-b025-48cd-8676-f64c4b706d22.ots
additional property: OTSRecordURL
  type: PropertyValue
  value: https://artists.proofprofile.net/proofs/artist/12fb8494-b025-48cd-8676-f64c4b706d22.json
additional property: OTSVerificationAPI
  type: PropertyValue
  value: https://artists.proofprofile.net/api/v1/bot/ots/verify/artist/12fb8494-b025-48cd-8676-f64c4b706d22
additional property: OTSTimestamp
  type: PropertyValue
  value: 2026-06-14T07:58:09Z
additional property: OTSCanonicalRecord
  type: PropertyValue
  value: {"copyright_id":"0xdf7f2392ef2d62f04248203aa2564f8540829dfa640102eaf2240c0feaed1ca9","name":"Iori Izumi (CV: Toshiki Masuda)","registered_at":"2026-06-14T06:29:09Z","symbol":"NIM0367301","token_address":"0xf91a1e21b2dad4f29807fbe505a7320553bdc365","type":"artist","uuid":"12fb8494-b025-48cd-8676-f64c4b706d22"}
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 0xdf7f2392ef2d62f04248203aa2564f8540829dfa640102eaf2240c0feaed1ca9. Chain 2 (Bitcoin): anchored in block 953610 (2026-06-14T07:58:09Z). Bridge: the canonical record inside this Bitcoin proof contains the same CopyrightID. Verify: download https://artists.proofprofile.net/proofs/artist/12fb8494-b025-48cd-8676-f64c4b706d22.json and https://artists.proofprofile.net/proofs/artist/12fb8494-b025-48cd-8676-f64c4b706d22.ots, run `ots verify -f record.json proof.ots` (https://opentimestamps.org).
  date published: 2026-06-14T07:58:09Z
  text: {"copyright_id":"0xdf7f2392ef2d62f04248203aa2564f8540829dfa640102eaf2240c0feaed1ca9","name":"Iori Izumi (CV: Toshiki Masuda)","registered_at":"2026-06-14T06:29:09Z","symbol":"NIM0367301","token_address":"0xf91a1e21b2dad4f29807fbe505a7320553bdc365","type":"artist","uuid":"12fb8494-b025-48cd-8676-f64c4b706d22"}
album: Polished
  type: MusicAlbum
  date published: 2024-01-25