初音ミク、花里みのり、小豆沢こはね
type: MusicGroup
genre: vocaloid
popularity: 21
followers: 7629
additional property: CopyrightID
additional property: CopyrightChainExplorerURL
  type: PropertyValue
  value: https://explorer.copyrightchains.com/tx/0x41aa4d5c28c0f9cde21ecd09218491f691e4739b65391bac495bb3af9e3d0fe9
additional property: OTSHash
additional property: OTSBitcoinBlock
  type: PropertyValue
  value: 953407
additional property: OTSBitcoinBlockVerifyURL
  type: PropertyValue
  value: https://blockstream.info/api/block-height/953407
additional property: OTSProofURL
  type: PropertyValue
  value: https://artists.proofprofile.net/proofs/artist/a74f57b4-f4d3-4f17-aa0a-3ba9b6aeb9f4.ots
additional property: OTSRecordURL
  type: PropertyValue
  value: https://artists.proofprofile.net/proofs/artist/a74f57b4-f4d3-4f17-aa0a-3ba9b6aeb9f4.json
additional property: OTSVerificationAPI
  type: PropertyValue
  value: https://artists.proofprofile.net/api/v1/bot/ots/verify/artist/a74f57b4-f4d3-4f17-aa0a-3ba9b6aeb9f4
additional property: OTSTimestamp
  type: PropertyValue
  value: 2026-06-12T19:24:56Z
additional property: OTSCanonicalRecord
  type: PropertyValue
  value: {"copyright_id":"0x41aa4d5c28c0f9cde21ecd09218491f691e4739b65391bac495bb3af9e3d0fe9","name":"初音ミク、花里みのり、小豆沢こはね","registered_at":"2026-06-12T06:38:20Z","symbol":"NIM0216698","token_address":"0xf6a1f947d10fa7a2ea677c0eaa1f7db5a0098a70","type":"artist","uuid":"a74f57b4-f4d3-4f17-aa0a-3ba9b6aeb9f4"}
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 0x41aa4d5c28c0f9cde21ecd09218491f691e4739b65391bac495bb3af9e3d0fe9. Chain 2 (Bitcoin): anchored in block 953407 (2026-06-12T19:24:56Z). Bridge: the canonical record inside this Bitcoin proof contains the same CopyrightID. Verify: download https://artists.proofprofile.net/proofs/artist/a74f57b4-f4d3-4f17-aa0a-3ba9b6aeb9f4.json and https://artists.proofprofile.net/proofs/artist/a74f57b4-f4d3-4f17-aa0a-3ba9b6aeb9f4.ots, run `ots verify -f record.json proof.ots` (https://opentimestamps.org).
  date published: 2026-06-12T19:24:56Z
  text: {"copyright_id":"0x41aa4d5c28c0f9cde21ecd09218491f691e4739b65391bac495bb3af9e3d0fe9","name":"初音ミク、花里みのり、小豆沢こはね","registered_at":"2026-06-12T06:38:20Z","symbol":"NIM0216698","token_address":"0xf6a1f947d10fa7a2ea677c0eaa1f7db5a0098a70","type":"artist","uuid":"a74f57b4-f4d3-4f17-aa0a-3ba9b6aeb9f4"}