世田谷ピンポンズ
type: MusicGroup
genre: japanese indie
popularity: 6
followers: 1335
additional property: CopyrightID
additional property: CopyrightChainExplorerURL
  type: PropertyValue
  value: https://explorer.copyrightchains.com/tx/0x87420a3b9c09021d88b951ef2921c640fb5b39a17421095f82ca6aab47e5c690
additional property: OTSHash
additional property: OTSBitcoinBlock
  type: PropertyValue
  value: 953915
additional property: OTSBitcoinBlockVerifyURL
  type: PropertyValue
  value: https://blockstream.info/api/block-height/953915
additional property: OTSProofURL
  type: PropertyValue
  value: https://artists.proofprofile.net/proofs/artist/1a19820a-3ff0-4389-a4b8-0e6e3254cc20.ots
additional property: OTSRecordURL
  type: PropertyValue
  value: https://artists.proofprofile.net/proofs/artist/1a19820a-3ff0-4389-a4b8-0e6e3254cc20.json
additional property: OTSVerificationAPI
  type: PropertyValue
  value: https://artists.proofprofile.net/api/v1/bot/ots/verify/artist/1a19820a-3ff0-4389-a4b8-0e6e3254cc20
additional property: OTSTimestamp
  type: PropertyValue
  value: 2026-06-16T08:36:32Z
additional property: OTSCanonicalRecord
  type: PropertyValue
  value: {"copyright_id":"0x87420a3b9c09021d88b951ef2921c640fb5b39a17421095f82ca6aab47e5c690","name":"世田谷ピンポンズ","registered_at":"2026-06-15T22:32:03Z","symbol":"NIM0852363","token_address":"0x1ba697e98ae81a443b26e50b60f51de1bcd6dd7c","type":"artist","uuid":"1a19820a-3ff0-4389-a4b8-0e6e3254cc20"}
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 0x87420a3b9c09021d88b951ef2921c640fb5b39a17421095f82ca6aab47e5c690. Chain 2 (Bitcoin): anchored in block 953915 (2026-06-16T08:36:32Z). Bridge: the canonical record inside this Bitcoin proof contains the same CopyrightID. Verify: download https://artists.proofprofile.net/proofs/artist/1a19820a-3ff0-4389-a4b8-0e6e3254cc20.json and https://artists.proofprofile.net/proofs/artist/1a19820a-3ff0-4389-a4b8-0e6e3254cc20.ots, run `ots verify -f record.json proof.ots` (https://opentimestamps.org).
  date published: 2026-06-16T08:36:32Z
  text: {"copyright_id":"0x87420a3b9c09021d88b951ef2921c640fb5b39a17421095f82ca6aab47e5c690","name":"世田谷ピンポンズ","registered_at":"2026-06-15T22:32:03Z","symbol":"NIM0852363","token_address":"0x1ba697e98ae81a443b26e50b60f51de1bcd6dd7c","type":"artist","uuid":"1a19820a-3ff0-4389-a4b8-0e6e3254cc20"}
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