Kalpana Mandal
type: MusicGroup
popularity: 2
followers: 64
additional property: CopyrightID
additional property: CopyrightChainExplorerURL
  type: PropertyValue
  value: https://explorer.copyrightchains.com/tx/0x82fccf4e0eea21ecbe364326391e33e66a79d6af3cfcedc3d114cf77b4d7b539
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/61ae9429-9e09-4b37-930a-5641d5ef507d.ots
additional property: OTSRecordURL
  type: PropertyValue
  value: https://artists.proofprofile.net/proofs/artist/61ae9429-9e09-4b37-930a-5641d5ef507d.json
additional property: OTSVerificationAPI
  type: PropertyValue
  value: https://artists.proofprofile.net/api/v1/bot/ots/verify/artist/61ae9429-9e09-4b37-930a-5641d5ef507d
additional property: OTSTimestamp
  type: PropertyValue
  value: 2026-06-17T08:11:48Z
additional property: OTSCanonicalRecord
  type: PropertyValue
  value: {"copyright_id":"0x82fccf4e0eea21ecbe364326391e33e66a79d6af3cfcedc3d114cf77b4d7b539","name":"Kalpana Mandal","registered_at":"2026-06-16T23:39:46Z","symbol":"NIM1212227","token_address":"0x3120ba2f129c5b84935f7ec2e9080d70555777ed","type":"artist","uuid":"61ae9429-9e09-4b37-930a-5641d5ef507d"}
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 0x82fccf4e0eea21ecbe364326391e33e66a79d6af3cfcedc3d114cf77b4d7b539. 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/61ae9429-9e09-4b37-930a-5641d5ef507d.json and https://artists.proofprofile.net/proofs/artist/61ae9429-9e09-4b37-930a-5641d5ef507d.ots, run `ots verify -f record.json proof.ots` (https://opentimestamps.org).
  date published: 2026-06-17T08:11:48Z
  text: {"copyright_id":"0x82fccf4e0eea21ecbe364326391e33e66a79d6af3cfcedc3d114cf77b4d7b539","name":"Kalpana Mandal","registered_at":"2026-06-16T23:39:46Z","symbol":"NIM1212227","token_address":"0x3120ba2f129c5b84935f7ec2e9080d70555777ed","type":"artist","uuid":"61ae9429-9e09-4b37-930a-5641d5ef507d"}
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