Richard Leonard
type: MusicGroup
description: Richard Leonard (born January 1962) is a British politician who served as Leader of the Scottish Labour Party from 2017 to 2021. He has been a Member of the Scottish Parliament (MSP), as one of the ad
popularity: 2
followers: 27
additional property: CopyrightID
additional property: CopyrightChainExplorerURL
  type: PropertyValue
  value: https://explorer.copyrightchains.com/tx/0xfd3cc98b9279bbff0a4aaa02cab7d39effa83e4f23d75e240c536b0b957bb3ab
additional property: OTSHash
additional property: OTSBitcoinBlock
  type: PropertyValue
  value: 953907
additional property: OTSBitcoinBlockVerifyURL
  type: PropertyValue
  value: https://blockstream.info/api/block-height/953907
additional property: OTSProofURL
  type: PropertyValue
  value: https://artists.proofprofile.net/proofs/artist/178f1e07-b577-4b4b-9396-9fdad73aadd3.ots
additional property: OTSRecordURL
  type: PropertyValue
  value: https://artists.proofprofile.net/proofs/artist/178f1e07-b577-4b4b-9396-9fdad73aadd3.json
additional property: OTSVerificationAPI
  type: PropertyValue
  value: https://artists.proofprofile.net/api/v1/bot/ots/verify/artist/178f1e07-b577-4b4b-9396-9fdad73aadd3
additional property: OTSTimestamp
  type: PropertyValue
  value: 2026-06-16T07:39:24Z
additional property: OTSCanonicalRecord
  type: PropertyValue
  value: {"copyright_id":"0xfd3cc98b9279bbff0a4aaa02cab7d39effa83e4f23d75e240c536b0b957bb3ab","name":"Richard Leonard","registered_at":"2026-06-15T21:45:56Z","symbol":"NIM0841369","token_address":"0xa1dd70bb5f78ac1711920b6e8771dcb0f430b01a","type":"artist","uuid":"178f1e07-b577-4b4b-9396-9fdad73aadd3"}
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 0xfd3cc98b9279bbff0a4aaa02cab7d39effa83e4f23d75e240c536b0b957bb3ab. Chain 2 (Bitcoin): anchored in block 953907 (2026-06-16T07:39:24Z). Bridge: the canonical record inside this Bitcoin proof contains the same CopyrightID. Verify: download https://artists.proofprofile.net/proofs/artist/178f1e07-b577-4b4b-9396-9fdad73aadd3.json and https://artists.proofprofile.net/proofs/artist/178f1e07-b577-4b4b-9396-9fdad73aadd3.ots, run `ots verify -f record.json proof.ots` (https://opentimestamps.org).
  date published: 2026-06-16T07:39:24Z
  text: {"copyright_id":"0xfd3cc98b9279bbff0a4aaa02cab7d39effa83e4f23d75e240c536b0b957bb3ab","name":"Richard Leonard","registered_at":"2026-06-15T21:45:56Z","symbol":"NIM0841369","token_address":"0xa1dd70bb5f78ac1711920b6e8771dcb0f430b01a","type":"artist","uuid":"178f1e07-b577-4b4b-9396-9fdad73aadd3"}
album: Lilia Bahati
  type: MusicAlbum
  date published: 2016-12-08