S. P. Rajkumar
type: MusicGroup
genre: tamil pop
description: S. P. Rajkumar is an Indian film director, who directs Tamil films. Career He started his film career as a dialogue writer for the 1997 film Once More. In 1998, he directed his first feature film Po
popularity: 3
followers: 6
additional property: CopyrightID
additional property: CopyrightChainExplorerURL
  type: PropertyValue
  value: https://explorer.copyrightchains.com/tx/0x4c4c13585e0b392da5cc28f42d8e8983f75e00615c033b227ed65915768f8eb6
additional property: OTSHash
additional property: OTSBitcoinBlock
  type: PropertyValue
  value: 954667
additional property: OTSBitcoinBlockVerifyURL
  type: PropertyValue
  value: https://blockstream.info/api/block-height/954667
additional property: OTSProofURL
  type: PropertyValue
  value: https://artists.proofprofile.net/proofs/artist/be4022a3-b1d0-40bf-8848-5f48dee59221.ots
additional property: OTSRecordURL
  type: PropertyValue
  value: https://artists.proofprofile.net/proofs/artist/be4022a3-b1d0-40bf-8848-5f48dee59221.json
additional property: OTSVerificationAPI
  type: PropertyValue
  value: https://artists.proofprofile.net/api/v1/bot/ots/verify/artist/be4022a3-b1d0-40bf-8848-5f48dee59221
additional property: OTSTimestamp
  type: PropertyValue
  value: 2026-06-21T07:29:20Z
additional property: OTSCanonicalRecord
  type: PropertyValue
  value: {"copyright_id":"0x4c4c13585e0b392da5cc28f42d8e8983f75e00615c033b227ed65915768f8eb6","name":"S. P. Rajkumar","registered_at":"2026-06-20T18:41:51Z","symbol":"NIM1681163","token_address":"0x51ccb2eae436b53f2fca3a4a5cb9c5dcf1d4fb29","type":"artist","uuid":"be4022a3-b1d0-40bf-8848-5f48dee59221"}
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 0x4c4c13585e0b392da5cc28f42d8e8983f75e00615c033b227ed65915768f8eb6. Chain 2 (Bitcoin): anchored in block 954667 (2026-06-21T07:29:20Z). Bridge: the canonical record inside this Bitcoin proof contains the same CopyrightID. Verify: download https://artists.proofprofile.net/proofs/artist/be4022a3-b1d0-40bf-8848-5f48dee59221.json and https://artists.proofprofile.net/proofs/artist/be4022a3-b1d0-40bf-8848-5f48dee59221.ots, run `ots verify -f record.json proof.ots` (https://opentimestamps.org).
  date published: 2026-06-21T07:29:20Z
  text: {"copyright_id":"0x4c4c13585e0b392da5cc28f42d8e8983f75e00615c033b227ed65915768f8eb6","name":"S. P. Rajkumar","registered_at":"2026-06-20T18:41:51Z","symbol":"NIM1681163","token_address":"0x51ccb2eae436b53f2fca3a4a5cb9c5dcf1d4fb29","type":"artist","uuid":"be4022a3-b1d0-40bf-8848-5f48dee59221"}