A. K. Hangal
type: MusicGroup
description: Avtar Kishan Hangal (1 February 1914 – 26 August 2012) was an Indian freedom fighter and actor. His most notable roles are as Ram Shastri in Aaina (1977), as Inder Sen in Shaukeen, as Bipinlal Pandey
popularity: 2
followers: 14
additional property: CopyrightID
additional property: CopyrightChainExplorerURL
  type: PropertyValue
  value: https://explorer.copyrightchains.com/tx/0x39494f950c0ef94e915c6360cea805babf776c72ca8f50678e96318b3a4f6b04
additional property: OTSHash
additional property: OTSBitcoinBlock
  type: PropertyValue
  value: 954065
additional property: OTSBitcoinBlockVerifyURL
  type: PropertyValue
  value: https://blockstream.info/api/block-height/954065
additional property: OTSProofURL
  type: PropertyValue
  value: https://artists.proofprofile.net/proofs/artist/50666c9a-4cf3-4790-979c-d5f76e6cc8c6.ots
additional property: OTSRecordURL
  type: PropertyValue
  value: https://artists.proofprofile.net/proofs/artist/50666c9a-4cf3-4790-979c-d5f76e6cc8c6.json
additional property: OTSVerificationAPI
  type: PropertyValue
  value: https://artists.proofprofile.net/api/v1/bot/ots/verify/artist/50666c9a-4cf3-4790-979c-d5f76e6cc8c6
additional property: OTSTimestamp
  type: PropertyValue
  value: 2026-06-17T08:10:43Z
additional property: OTSCanonicalRecord
  type: PropertyValue
  value: {"copyright_id":"0x39494f950c0ef94e915c6360cea805babf776c72ca8f50678e96318b3a4f6b04","name":"A. K. Hangal","registered_at":"2026-06-16T17:31:06Z","symbol":"NIM1124276","token_address":"0x1c46d694c5803a0c8a2ee6fcb7381e00f0c07fb6","type":"artist","uuid":"50666c9a-4cf3-4790-979c-d5f76e6cc8c6"}
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 0x39494f950c0ef94e915c6360cea805babf776c72ca8f50678e96318b3a4f6b04. 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/50666c9a-4cf3-4790-979c-d5f76e6cc8c6.json and https://artists.proofprofile.net/proofs/artist/50666c9a-4cf3-4790-979c-d5f76e6cc8c6.ots, run `ots verify -f record.json proof.ots` (https://opentimestamps.org).
  date published: 2026-06-17T08:11:48Z
  text: {"copyright_id":"0x39494f950c0ef94e915c6360cea805babf776c72ca8f50678e96318b3a4f6b04","name":"A. K. Hangal","registered_at":"2026-06-16T17:31:06Z","symbol":"NIM1124276","token_address":"0x1c46d694c5803a0c8a2ee6fcb7381e00f0c07fb6","type":"artist","uuid":"50666c9a-4cf3-4790-979c-d5f76e6cc8c6"}