プランプラム
type: MusicGroup
genre: japanese indie
popularity: 2
followers: 593
additional property: CopyrightID
additional property: CopyrightChainExplorerURL
  type: PropertyValue
  value: https://explorer.copyrightchains.com/tx/0x73e9a4d1a2474045f7c2243a044c3926d7b5d012015d015424d6fd194d19e656
additional property: OTSHash
additional property: OTSBitcoinBlock
  type: PropertyValue
  value: 954342
additional property: OTSBitcoinBlockVerifyURL
  type: PropertyValue
  value: https://blockstream.info/api/block-height/954342
additional property: OTSProofURL
  type: PropertyValue
  value: https://artists.proofprofile.net/proofs/artist/8905a862-54fe-4d5c-b1b3-f9dfe3bb6e9c.ots
additional property: OTSRecordURL
  type: PropertyValue
  value: https://artists.proofprofile.net/proofs/artist/8905a862-54fe-4d5c-b1b3-f9dfe3bb6e9c.json
additional property: OTSVerificationAPI
  type: PropertyValue
  value: https://artists.proofprofile.net/api/v1/bot/ots/verify/artist/8905a862-54fe-4d5c-b1b3-f9dfe3bb6e9c
additional property: OTSTimestamp
  type: PropertyValue
  value: 2026-06-19T03:22:39Z
additional property: OTSCanonicalRecord
  type: PropertyValue
  value: {"copyright_id":"0x73e9a4d1a2474045f7c2243a044c3926d7b5d012015d015424d6fd194d19e656","name":"プランプラム","registered_at":"2026-06-17T13:29:26Z","symbol":"NIM1410044","token_address":"0x29e59d056dca819ed96dcffb951b52a9487995d4","type":"artist","uuid":"8905a862-54fe-4d5c-b1b3-f9dfe3bb6e9c"}
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 0x73e9a4d1a2474045f7c2243a044c3926d7b5d012015d015424d6fd194d19e656. Chain 2 (Bitcoin): anchored in block 954342 (2026-06-19T03:22:39Z). Bridge: the canonical record inside this Bitcoin proof contains the same CopyrightID. Verify: download https://artists.proofprofile.net/proofs/artist/8905a862-54fe-4d5c-b1b3-f9dfe3bb6e9c.json and https://artists.proofprofile.net/proofs/artist/8905a862-54fe-4d5c-b1b3-f9dfe3bb6e9c.ots, run `ots verify -f record.json proof.ots` (https://opentimestamps.org).
  date published: 2026-06-19T03:22:39Z
  text: {"copyright_id":"0x73e9a4d1a2474045f7c2243a044c3926d7b5d012015d015424d6fd194d19e656","name":"プランプラム","registered_at":"2026-06-17T13:29:26Z","symbol":"NIM1410044","token_address":"0x29e59d056dca819ed96dcffb951b52a9487995d4","type":"artist","uuid":"8905a862-54fe-4d5c-b1b3-f9dfe3bb6e9c"}
album: finder
  type: MusicAlbum
  date published: 2021-01-11
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  date published: 2022-12-28
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  type: MusicAlbum
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