言川
type: MusicGroup
popularity: 2
followers: 4
additional property: CopyrightID
additional property: CopyrightChainExplorerURL
  type: PropertyValue
  value: https://explorer.copyrightchains.com/tx/0x5668f87c6284aa1afbcd3131a1f7ce0978a452b07ca8d9955d5ca2f7714bb567
additional property: OTSHash
additional property: OTSBitcoinBlock
  type: PropertyValue
  value: 954549
additional property: OTSBitcoinBlockVerifyURL
  type: PropertyValue
  value: https://blockstream.info/api/block-height/954549
additional property: OTSProofURL
  type: PropertyValue
  value: https://artists.proofprofile.net/proofs/artist/a871c210-3cbb-4ccc-b753-354afe8c1fdd.ots
additional property: OTSRecordURL
  type: PropertyValue
  value: https://artists.proofprofile.net/proofs/artist/a871c210-3cbb-4ccc-b753-354afe8c1fdd.json
additional property: OTSVerificationAPI
  type: PropertyValue
  value: https://artists.proofprofile.net/api/v1/bot/ots/verify/artist/a871c210-3cbb-4ccc-b753-354afe8c1fdd
additional property: OTSTimestamp
  type: PropertyValue
  value: 2026-06-20T10:56:20Z
additional property: OTSCanonicalRecord
  type: PropertyValue
  value: {"copyright_id":"0x5668f87c6284aa1afbcd3131a1f7ce0978a452b07ca8d9955d5ca2f7714bb567","name":"言川","registered_at":"2026-06-20T08:46:43Z","symbol":"NIM1569358","token_address":"0x4268ad874f92c9f4440d4fd03689c11b25285e14","type":"artist","uuid":"a871c210-3cbb-4ccc-b753-354afe8c1fdd"}
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 0x5668f87c6284aa1afbcd3131a1f7ce0978a452b07ca8d9955d5ca2f7714bb567. Chain 2 (Bitcoin): anchored in block 954555 (2026-06-20T12:10:20Z). Bridge: the canonical record inside this Bitcoin proof contains the same CopyrightID. Verify: download https://artists.proofprofile.net/proofs/artist/a871c210-3cbb-4ccc-b753-354afe8c1fdd.json and https://artists.proofprofile.net/proofs/artist/a871c210-3cbb-4ccc-b753-354afe8c1fdd.ots, run `ots verify -f record.json proof.ots` (https://opentimestamps.org).
  date published: 2026-06-20T12:10:20Z
  text: {"copyright_id":"0x5668f87c6284aa1afbcd3131a1f7ce0978a452b07ca8d9955d5ca2f7714bb567","name":"言川","registered_at":"2026-06-20T08:46:43Z","symbol":"NIM1569358","token_address":"0x4268ad874f92c9f4440d4fd03689c11b25285e14","type":"artist","uuid":"a871c210-3cbb-4ccc-b753-354afe8c1fdd"}
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