Leather Face
type: MusicGroup
description: Leather Face, also known as Farzand-e-Watan, is a 1939 Indian Hindi-language action film produced and directed by Vijay Bhatt for his production company Prakash Pictures. Bhatt cast the young Mahjabee
popularity: 2
followers: 12
additional property: CopyrightID
additional property: CopyrightChainExplorerURL
  type: PropertyValue
  value: https://explorer.copyrightchains.com/tx/0xe77fb4129d6a3aed992e7c438d06a7801de6a48c527ed1ab3ea52eab0f7af08a
additional property: OTSHash
additional property: OTSBitcoinBlock
  type: PropertyValue
  value: 954043
additional property: OTSBitcoinBlockVerifyURL
  type: PropertyValue
  value: https://blockstream.info/api/block-height/954043
additional property: OTSProofURL
  type: PropertyValue
  value: https://artists.proofprofile.net/proofs/artist/400f8c6c-17f9-4cff-b5ae-97d4fe24611b.ots
additional property: OTSRecordURL
  type: PropertyValue
  value: https://artists.proofprofile.net/proofs/artist/400f8c6c-17f9-4cff-b5ae-97d4fe24611b.json
additional property: OTSVerificationAPI
  type: PropertyValue
  value: https://artists.proofprofile.net/api/v1/bot/ots/verify/artist/400f8c6c-17f9-4cff-b5ae-97d4fe24611b
additional property: OTSTimestamp
  type: PropertyValue
  value: 2026-06-17T04:15:20Z
additional property: OTSCanonicalRecord
  type: PropertyValue
  value: {"copyright_id":"0xe77fb4129d6a3aed992e7c438d06a7801de6a48c527ed1ab3ea52eab0f7af08a","name":"Leather Face","registered_at":"2026-06-16T11:54:00Z","symbol":"NIM1043849","token_address":"0xbdc6a8f7a5f0d969827f4ec5737f86fe30250bf4","type":"artist","uuid":"400f8c6c-17f9-4cff-b5ae-97d4fe24611b"}
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 Note: an OTS proof may carry multiple Bitcoin attestations; OTSBitcoinBlock is the earliest confirmed one — a later attestation inside the proof corroborates it and is not a mismatch
subject of: OpenTimestamps Proof of Existence
  type: DigitalDocument
  encoding format: application/vnd.opentimestamps.ots
  description: Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xe77fb4129d6a3aed992e7c438d06a7801de6a48c527ed1ab3ea52eab0f7af08a. Chain 2 (Bitcoin): anchored in block 954043 (2026-06-17T04:15:20Z). Bridge: the canonical record inside this Bitcoin proof contains the same CopyrightID. Verify: download https://artists.proofprofile.net/proofs/artist/400f8c6c-17f9-4cff-b5ae-97d4fe24611b.json and https://artists.proofprofile.net/proofs/artist/400f8c6c-17f9-4cff-b5ae-97d4fe24611b.ots, run `ots verify -f record.json proof.ots` (https://opentimestamps.org).
  date published: 2026-06-17T04:15:20Z
  text: {"copyright_id":"0xe77fb4129d6a3aed992e7c438d06a7801de6a48c527ed1ab3ea52eab0f7af08a","name":"Leather Face","registered_at":"2026-06-16T11:54:00Z","symbol":"NIM1043849","token_address":"0xbdc6a8f7a5f0d969827f4ec5737f86fe30250bf4","type":"artist","uuid":"400f8c6c-17f9-4cff-b5ae-97d4fe24611b"}
album: You Can't Stop Me
  type: MusicAlbum
  date published: 2021-12-31
album: I Put It On Da Cliff
  type: MusicAlbum
  date published: 2025-09-01