Manna Singh
type: MusicGroup
description: Major Manna Singh (20 February 1914 – 22 July 1954) was an Indian field hockey player and officer in the British Indian Army. He was the coach of Indian field hockey team. History Manna Singh was bor
popularity: 8
additional property: CopyrightID
additional property: CopyrightChainExplorerURL
  type: PropertyValue
  value: https://explorer.copyrightchains.com/tx/0x7910bea17657d10e786bc0f7e1120056edbd94ebef73b835f1b8ffb3f8bcb071
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/cca320a8-b48f-4f82-ba0b-b628439398a5.ots
additional property: OTSRecordURL
  type: PropertyValue
  value: https://artists.proofprofile.net/proofs/artist/cca320a8-b48f-4f82-ba0b-b628439398a5.json
additional property: OTSVerificationAPI
  type: PropertyValue
  value: https://artists.proofprofile.net/api/v1/bot/ots/verify/artist/cca320a8-b48f-4f82-ba0b-b628439398a5
additional property: OTSTimestamp
  type: PropertyValue
  value: 2026-06-21T07:29:20Z
additional property: OTSCanonicalRecord
  type: PropertyValue
  value: {"copyright_id":"0x7910bea17657d10e786bc0f7e1120056edbd94ebef73b835f1b8ffb3f8bcb071","name":"Manna Singh","registered_at":"2026-06-20T23:48:04Z","symbol":"NIM1752720","token_address":"0x6b237247e78894d1d99ec88302181baa76b9f723","type":"artist","uuid":"cca320a8-b48f-4f82-ba0b-b628439398a5"}
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 0x7910bea17657d10e786bc0f7e1120056edbd94ebef73b835f1b8ffb3f8bcb071. 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/cca320a8-b48f-4f82-ba0b-b628439398a5.json and https://artists.proofprofile.net/proofs/artist/cca320a8-b48f-4f82-ba0b-b628439398a5.ots, the client at https://opentimestamps.org runs `ots verify -f record.json proof.ots`.
  date published: 2026-06-21T07:29:20Z
  text: {"copyright_id":"0x7910bea17657d10e786bc0f7e1120056edbd94ebef73b835f1b8ffb3f8bcb071","name":"Manna Singh","registered_at":"2026-06-20T23:48:04Z","symbol":"NIM1752720","token_address":"0x6b237247e78894d1d99ec88302181baa76b9f723","type":"artist","uuid":"cca320a8-b48f-4f82-ba0b-b628439398a5"}