add9 (heri P)
type: MusicGroup
genre: vocaloid
popularity: 4
followers: 539
additional property: CopyrightID
additional property: CopyrightChainExplorerURL
  type: PropertyValue
  value: https://explorer.copyrightchains.com/tx/0xe7bdb9bb3d5269eaaca1009b583d64b1a765251873ad317568f0fc294cf28b1a
additional property: OTSHash
additional property: OTSBitcoinBlock
  type: PropertyValue
  value: 953867
additional property: OTSBitcoinBlockVerifyURL
  type: PropertyValue
  value: https://blockstream.info/api/block-height/953867
additional property: OTSProofURL
  type: PropertyValue
  value: https://artists.proofprofile.net/proofs/artist/061bd22b-43b0-4fd4-b3d9-14bb09a0f192.ots
additional property: OTSRecordURL
  type: PropertyValue
  value: https://artists.proofprofile.net/proofs/artist/061bd22b-43b0-4fd4-b3d9-14bb09a0f192.json
additional property: OTSVerificationAPI
  type: PropertyValue
  value: https://artists.proofprofile.net/api/v1/bot/ots/verify/artist/061bd22b-43b0-4fd4-b3d9-14bb09a0f192
additional property: OTSTimestamp
  type: PropertyValue
  value: 2026-06-16T01:09:47Z
additional property: OTSCanonicalRecord
  type: PropertyValue
  value: {"copyright_id":"0xe7bdb9bb3d5269eaaca1009b583d64b1a765251873ad317568f0fc294cf28b1a","name":"add9 (heri P)","registered_at":"2026-06-15T15:33:48Z","symbol":"NIM0752586","token_address":"0x1e8b7a6ae2fd27db323fc76de11b2a0a7fe0b11c","type":"artist","uuid":"061bd22b-43b0-4fd4-b3d9-14bb09a0f192"}
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 0xe7bdb9bb3d5269eaaca1009b583d64b1a765251873ad317568f0fc294cf28b1a. 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/061bd22b-43b0-4fd4-b3d9-14bb09a0f192.json and https://artists.proofprofile.net/proofs/artist/061bd22b-43b0-4fd4-b3d9-14bb09a0f192.ots, run `ots verify -f record.json proof.ots` (https://opentimestamps.org).
  date published: 2026-06-16T07:53:13Z
  text: {"copyright_id":"0xe7bdb9bb3d5269eaaca1009b583d64b1a765251873ad317568f0fc294cf28b1a","name":"add9 (heri P)","registered_at":"2026-06-15T15:33:48Z","symbol":"NIM0752586","token_address":"0x1e8b7a6ae2fd27db323fc76de11b2a0a7fe0b11c","type":"artist","uuid":"061bd22b-43b0-4fd4-b3d9-14bb09a0f192"}
album: 風待ちハローワールド
  type: MusicAlbum
  date published: 2012-06-27