yuko ikoma
type: MusicGroup
popularity: 2
followers: 432
additional property: CopyrightID
additional property: CopyrightChainExplorerURL
  type: PropertyValue
  value: https://explorer.copyrightchains.com/tx/0xb51f20df4bc92d85b9f47f629ed57e483d36bc6ccbae0b6ca2d7c6531a585802
additional property: OTSHash
additional property: OTSBitcoinBlock
  type: PropertyValue
  value: 954066
additional property: OTSBitcoinBlockVerifyURL
  type: PropertyValue
  value: https://blockstream.info/api/block-height/954066
additional property: OTSProofURL
  type: PropertyValue
  value: https://artists.proofprofile.net/proofs/artist/74e84186-0bc0-4505-93cc-c56849d3e88c.ots
additional property: OTSRecordURL
  type: PropertyValue
  value: https://artists.proofprofile.net/proofs/artist/74e84186-0bc0-4505-93cc-c56849d3e88c.json
additional property: OTSVerificationAPI
  type: PropertyValue
  value: https://artists.proofprofile.net/api/v1/bot/ots/verify/artist/74e84186-0bc0-4505-93cc-c56849d3e88c
additional property: OTSTimestamp
  type: PropertyValue
  value: 2026-06-17T08:11:48Z
additional property: OTSCanonicalRecord
  type: PropertyValue
  value: {"copyright_id":"0xb51f20df4bc92d85b9f47f629ed57e483d36bc6ccbae0b6ca2d7c6531a585802","name":"yuko ikoma","registered_at":"2026-06-17T06:46:56Z","symbol":"NIM1314179","token_address":"0xad6447c0590f338d752b12abb24e27fa529c06c0","type":"artist","uuid":"74e84186-0bc0-4505-93cc-c56849d3e88c"}
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 0xb51f20df4bc92d85b9f47f629ed57e483d36bc6ccbae0b6ca2d7c6531a585802. Chain 2 (Bitcoin): anchored in block 954066 (2026-06-17T08:11:48Z). Bridge: the canonical record inside this Bitcoin proof contains the same CopyrightID. Verify: download https://artists.proofprofile.net/proofs/artist/74e84186-0bc0-4505-93cc-c56849d3e88c.json and https://artists.proofprofile.net/proofs/artist/74e84186-0bc0-4505-93cc-c56849d3e88c.ots, run `ots verify -f record.json proof.ots` (https://opentimestamps.org).
  date published: 2026-06-17T08:11:48Z
  text: {"copyright_id":"0xb51f20df4bc92d85b9f47f629ed57e483d36bc6ccbae0b6ca2d7c6531a585802","name":"yuko ikoma","registered_at":"2026-06-17T06:46:56Z","symbol":"NIM1314179","token_address":"0xad6447c0590f338d752b12abb24e27fa529c06c0","type":"artist","uuid":"74e84186-0bc0-4505-93cc-c56849d3e88c"}
album: esquisse
  type: MusicAlbum
  date published: 2007
album: Esquisse
  type: MusicAlbum
  date published: 2007
album: esquisse
  type: MusicAlbum
  date published: 2007
album: esquisse
  type: MusicAlbum
  date published: 2007
album: Suite for Fragile Chamber Orchestra
  type: MusicAlbum
  date published: 2011-11-11