Ekaterina Sizova
type: MusicGroup
genre: desi hip hop
genre: hindi hip hop
genre: punjabi hip hop
genre: punjabi pop
popularity: 16
followers: 1775
additional property: CopyrightID
additional property: CopyrightChainExplorerURL
  type: PropertyValue
  value: https://explorer.copyrightchains.com/tx/0x3e1d1f96edec8a5af78f573a5ca91efa0ce0fd14327b6bf8151e319df5c110a0
additional property: OTSHash
additional property: OTSBitcoinBlock
  type: PropertyValue
  value: 953657
additional property: OTSBitcoinBlockVerifyURL
  type: PropertyValue
  value: https://blockstream.info/api/block-height/953657
additional property: OTSProofURL
  type: PropertyValue
  value: https://artists.proofprofile.net/proofs/artist/5150706d-6f16-41ef-875e-cf86a8a0ef39.ots
additional property: OTSRecordURL
  type: PropertyValue
  value: https://artists.proofprofile.net/proofs/artist/5150706d-6f16-41ef-875e-cf86a8a0ef39.json
additional property: OTSVerificationAPI
  type: PropertyValue
  value: https://artists.proofprofile.net/api/v1/bot/ots/verify/artist/5150706d-6f16-41ef-875e-cf86a8a0ef39
additional property: OTSTimestamp
  type: PropertyValue
  value: 2026-06-14T16:43:25Z
additional property: OTSCanonicalRecord
  type: PropertyValue
  value: {"copyright_id":"0x3e1d1f96edec8a5af78f573a5ca91efa0ce0fd14327b6bf8151e319df5c110a0","name":"Ekaterina Sizova","registered_at":"2026-06-14T13:01:38Z","symbol":"NIM0460939","token_address":"0x513dba8a1f20f31b9d5be56b7f3f0a6e9ae5fac6","type":"artist","uuid":"5150706d-6f16-41ef-875e-cf86a8a0ef39"}
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 0x3e1d1f96edec8a5af78f573a5ca91efa0ce0fd14327b6bf8151e319df5c110a0. Chain 2 (Bitcoin): anchored in block 953657 (2026-06-14T16:43:25Z). Bridge: the canonical record inside this Bitcoin proof contains the same CopyrightID. Verify: download https://artists.proofprofile.net/proofs/artist/5150706d-6f16-41ef-875e-cf86a8a0ef39.json and https://artists.proofprofile.net/proofs/artist/5150706d-6f16-41ef-875e-cf86a8a0ef39.ots, run `ots verify -f record.json proof.ots` (https://opentimestamps.org).
  date published: 2026-06-14T16:43:25Z
  text: {"copyright_id":"0x3e1d1f96edec8a5af78f573a5ca91efa0ce0fd14327b6bf8151e319df5c110a0","name":"Ekaterina Sizova","registered_at":"2026-06-14T13:01:38Z","symbol":"NIM0460939","token_address":"0x513dba8a1f20f31b9d5be56b7f3f0a6e9ae5fac6","type":"artist","uuid":"5150706d-6f16-41ef-875e-cf86a8a0ef39"}