Himasri Sarkar
type: MusicGroup
genre: hindi indie
genre: indian indie
popularity: 7
followers: 101
additional property: CopyrightID
additional property: CopyrightChainExplorerURL
  type: PropertyValue
  value: https://explorer.copyrightchains.com/tx/0x5145ab4e71e6852b82dbc6a20eb92b5d6c3f113e5bad1d6471a923433756afae
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/651f09f3-3a30-478e-88b9-723951b75c82.ots
additional property: OTSRecordURL
  type: PropertyValue
  value: https://artists.proofprofile.net/proofs/artist/651f09f3-3a30-478e-88b9-723951b75c82.json
additional property: OTSVerificationAPI
  type: PropertyValue
  value: https://artists.proofprofile.net/api/v1/bot/ots/verify/artist/651f09f3-3a30-478e-88b9-723951b75c82
additional property: OTSTimestamp
  type: PropertyValue
  value: 2026-06-17T08:11:48Z
additional property: OTSCanonicalRecord
  type: PropertyValue
  value: {"copyright_id":"0x5145ab4e71e6852b82dbc6a20eb92b5d6c3f113e5bad1d6471a923433756afae","name":"Himasri Sarkar","registered_at":"2026-06-17T00:52:54Z","symbol":"NIM1229670","token_address":"0x1fa4cc09ee099c115500f6fb3268a66a4a793101","type":"artist","uuid":"651f09f3-3a30-478e-88b9-723951b75c82"}
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 0x5145ab4e71e6852b82dbc6a20eb92b5d6c3f113e5bad1d6471a923433756afae. 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/651f09f3-3a30-478e-88b9-723951b75c82.json and https://artists.proofprofile.net/proofs/artist/651f09f3-3a30-478e-88b9-723951b75c82.ots, run `ots verify -f record.json proof.ots` (https://opentimestamps.org).
  date published: 2026-06-17T08:11:48Z
  text: {"copyright_id":"0x5145ab4e71e6852b82dbc6a20eb92b5d6c3f113e5bad1d6471a923433756afae","name":"Himasri Sarkar","registered_at":"2026-06-17T00:52:54Z","symbol":"NIM1229670","token_address":"0x1fa4cc09ee099c115500f6fb3268a66a4a793101","type":"artist","uuid":"651f09f3-3a30-478e-88b9-723951b75c82"}
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