Kripasindhu Sarkar
type: MusicGroup
popularity: 3
followers: 144
additional property: CopyrightID
additional property: CopyrightChainExplorerURL
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additional property: OTSHash
additional property: OTSBitcoinBlock
  type: PropertyValue
  value: 954014
additional property: OTSBitcoinBlockVerifyURL
  type: PropertyValue
  value: https://blockstream.info/api/block-height/954014
additional property: OTSProofURL
  type: PropertyValue
  value: https://artists.proofprofile.net/proofs/artist/2eda0ba4-ba65-46e6-b1ee-0a82661431eb.ots
additional property: OTSRecordURL
  type: PropertyValue
  value: https://artists.proofprofile.net/proofs/artist/2eda0ba4-ba65-46e6-b1ee-0a82661431eb.json
additional property: OTSVerificationAPI
  type: PropertyValue
  value: https://artists.proofprofile.net/api/v1/bot/ots/verify/artist/2eda0ba4-ba65-46e6-b1ee-0a82661431eb
additional property: OTSTimestamp
  type: PropertyValue
  value: 2026-06-16T22:46:20Z
additional property: OTSCanonicalRecord
  type: PropertyValue
  value: {"copyright_id":"0xbf6913439bb229cc76a283cf3cd5aa3f4fb8ed15dacf66b9531688f8f6747259","name":"Kripasindhu Sarkar","registered_at":"2026-06-16T05:53:45Z","symbol":"NIM0957870","token_address":"0x009bf89c3f49030e35e1c7a5c850b8174ece991e","type":"artist","uuid":"2eda0ba4-ba65-46e6-b1ee-0a82661431eb"}
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 0xbf6913439bb229cc76a283cf3cd5aa3f4fb8ed15dacf66b9531688f8f6747259. Chain 2 (Bitcoin): anchored in block 954014 (2026-06-16T22:46:20Z). Bridge: the canonical record inside this Bitcoin proof contains the same CopyrightID. Verify: download https://artists.proofprofile.net/proofs/artist/2eda0ba4-ba65-46e6-b1ee-0a82661431eb.json and https://artists.proofprofile.net/proofs/artist/2eda0ba4-ba65-46e6-b1ee-0a82661431eb.ots, run `ots verify -f record.json proof.ots` (https://opentimestamps.org).
  date published: 2026-06-16T22:46:20Z
  text: {"copyright_id":"0xbf6913439bb229cc76a283cf3cd5aa3f4fb8ed15dacf66b9531688f8f6747259","name":"Kripasindhu Sarkar","registered_at":"2026-06-16T05:53:45Z","symbol":"NIM0957870","token_address":"0x009bf89c3f49030e35e1c7a5c850b8174ece991e","type":"artist","uuid":"2eda0ba4-ba65-46e6-b1ee-0a82661431eb"}
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