関原孝明
type: MusicGroup
popularity: 5
followers: 3
additional property: CopyrightID
additional property: CopyrightChainExplorerURL
  type: PropertyValue
  value: https://explorer.copyrightchains.com/tx/0xc6bd8c0ea44c6894d2978e3c3211ec92b11ad2031c68143d8418235423275231
additional property: OTSHash
additional property: OTSBitcoinBlock
  type: PropertyValue
  value: 954728
additional property: OTSBitcoinBlockVerifyURL
  type: PropertyValue
  value: https://blockstream.info/api/block-height/954728
additional property: OTSProofURL
  type: PropertyValue
  value: https://artists.proofprofile.net/proofs/artist/f8e889f9-a409-4861-b6ff-d21a16b4a45d.ots
additional property: OTSRecordURL
  type: PropertyValue
  value: https://artists.proofprofile.net/proofs/artist/f8e889f9-a409-4861-b6ff-d21a16b4a45d.json
additional property: OTSVerificationAPI
  type: PropertyValue
  value: https://artists.proofprofile.net/api/v1/bot/ots/verify/artist/f8e889f9-a409-4861-b6ff-d21a16b4a45d
additional property: OTSTimestamp
  type: PropertyValue
  value: 2026-06-21T18:08:38Z
additional property: OTSCanonicalRecord
  type: PropertyValue
  value: {"copyright_id":"0xc6bd8c0ea44c6894d2978e3c3211ec92b11ad2031c68143d8418235423275231","name":"関原孝明","registered_at":"2026-06-21T16:16:15Z","symbol":"NIM1971462","token_address":"0x9530f7860fb4c6160c6f27c4e8bf036b3790e893","type":"artist","uuid":"f8e889f9-a409-4861-b6ff-d21a16b4a45d"}
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 0xc6bd8c0ea44c6894d2978e3c3211ec92b11ad2031c68143d8418235423275231. Chain 2 (Bitcoin): anchored in block 954728 (2026-06-21T18:08:38Z). Bridge: the canonical record inside this Bitcoin proof contains the same CopyrightID. Verify: download https://artists.proofprofile.net/proofs/artist/f8e889f9-a409-4861-b6ff-d21a16b4a45d.json and https://artists.proofprofile.net/proofs/artist/f8e889f9-a409-4861-b6ff-d21a16b4a45d.ots, run `ots verify -f record.json proof.ots` (https://opentimestamps.org).
  date published: 2026-06-21T18:08:38Z
  text: {"copyright_id":"0xc6bd8c0ea44c6894d2978e3c3211ec92b11ad2031c68143d8418235423275231","name":"関原孝明","registered_at":"2026-06-21T16:16:15Z","symbol":"NIM1971462","token_address":"0x9530f7860fb4c6160c6f27c4e8bf036b3790e893","type":"artist","uuid":"f8e889f9-a409-4861-b6ff-d21a16b4a45d"}
album: SOLO SONGS
  type: MusicAlbum
  date published: 2023-08-05
album: SING WITH A GUITAR
  type: MusicAlbum
  date published: 2024-01-14