cH²
type: MusicGroup
genre: underground hip hop
popularity: 5
followers: 73
additional property: CopyrightID
additional property: CopyrightChainExplorerURL
  type: PropertyValue
  value: https://explorer.copyrightchains.com/tx/0x1e420acc910a6a75de816a785034dd1403526a4f98bb559e579a0137b51d4372
additional property: OTSHash
additional property: OTSBitcoinBlock
  type: PropertyValue
  value: 954066
additional property: OTSBitcoinBlockVerifyURL
  type: PropertyValue
  value: https://blockstream.info/api/block-height/954066
additional property: OTSProofURL
  type: PropertyValue
  value: https://artists.proofprofile.net/proofs/artist/7055aaea-5125-4144-8479-72f7ed9328ff.ots
additional property: OTSRecordURL
  type: PropertyValue
  value: https://artists.proofprofile.net/proofs/artist/7055aaea-5125-4144-8479-72f7ed9328ff.json
additional property: OTSVerificationAPI
  type: PropertyValue
  value: https://artists.proofprofile.net/api/v1/bot/ots/verify/artist/7055aaea-5125-4144-8479-72f7ed9328ff
additional property: OTSTimestamp
  type: PropertyValue
  value: 2026-06-17T08:11:48Z
additional property: OTSCanonicalRecord
  type: PropertyValue
  value: {"copyright_id":"0x1e420acc910a6a75de816a785034dd1403526a4f98bb559e579a0137b51d4372","name":"cH²","registered_at":"2026-06-17T04:47:19Z","symbol":"NIM1285632","token_address":"0x9032219de84b405235d7a2bddd7be79367c464e9","type":"artist","uuid":"7055aaea-5125-4144-8479-72f7ed9328ff"}
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 0x1e420acc910a6a75de816a785034dd1403526a4f98bb559e579a0137b51d4372. Chain 2 (Bitcoin): anchored in block 954066 (2026-06-17T08:11:48Z). Bridge: the canonical record inside this Bitcoin proof contains the same CopyrightID. Verify: download https://artists.proofprofile.net/proofs/artist/7055aaea-5125-4144-8479-72f7ed9328ff.json and https://artists.proofprofile.net/proofs/artist/7055aaea-5125-4144-8479-72f7ed9328ff.ots, run `ots verify -f record.json proof.ots` (https://opentimestamps.org).
  date published: 2026-06-17T08:11:48Z
  text: {"copyright_id":"0x1e420acc910a6a75de816a785034dd1403526a4f98bb559e579a0137b51d4372","name":"cH²","registered_at":"2026-06-17T04:47:19Z","symbol":"NIM1285632","token_address":"0x9032219de84b405235d7a2bddd7be79367c464e9","type":"artist","uuid":"7055aaea-5125-4144-8479-72f7ed9328ff"}
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