Dan Leonard
type: MusicGroup
genre: jazz funk
genre: jazz fusion
description: Daniel J. Leonard (born March 18, 1949) is an American politician. He was a member of the Indiana House of Representatives from the 50th District, serving from 2002 until 2022. A businessman, he is a
popularity: 3
followers: 33
additional property: CopyrightID
additional property: CopyrightChainExplorerURL
  type: PropertyValue
  value: https://explorer.copyrightchains.com/tx/0xf782c66d6c5b125e9e900c2afe214f3a0d9a18cfae559a6e96d767e68d4e4d83
additional property: OTSHash
additional property: OTSBitcoinBlock
  type: PropertyValue
  value: 954346
additional property: OTSBitcoinBlockVerifyURL
  type: PropertyValue
  value: https://blockstream.info/api/block-height/954346
additional property: OTSProofURL
  type: PropertyValue
  value: https://artists.proofprofile.net/proofs/artist/934da0da-0573-4543-9ce8-ef8e3085f89c.ots
additional property: OTSRecordURL
  type: PropertyValue
  value: https://artists.proofprofile.net/proofs/artist/934da0da-0573-4543-9ce8-ef8e3085f89c.json
additional property: OTSVerificationAPI
  type: PropertyValue
  value: https://artists.proofprofile.net/api/v1/bot/ots/verify/artist/934da0da-0573-4543-9ce8-ef8e3085f89c
additional property: OTSTimestamp
  type: PropertyValue
  value: 2026-06-19T03:51:26Z
additional property: OTSCanonicalRecord
  type: PropertyValue
  value: {"copyright_id":"0xf782c66d6c5b125e9e900c2afe214f3a0d9a18cfae559a6e96d767e68d4e4d83","name":"Dan Leonard","registered_at":"2026-06-17T17:25:02Z","symbol":"NIM1466291","token_address":"0x1c0eaf2a12fde413c398841a476ee50c635b47ec","type":"artist","uuid":"934da0da-0573-4543-9ce8-ef8e3085f89c"}
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 0xf782c66d6c5b125e9e900c2afe214f3a0d9a18cfae559a6e96d767e68d4e4d83. Chain 2 (Bitcoin): anchored in block 954346 (2026-06-19T03:51:26Z). Bridge: the canonical record inside this Bitcoin proof contains the same CopyrightID. Verify: download https://artists.proofprofile.net/proofs/artist/934da0da-0573-4543-9ce8-ef8e3085f89c.json and https://artists.proofprofile.net/proofs/artist/934da0da-0573-4543-9ce8-ef8e3085f89c.ots, run `ots verify -f record.json proof.ots` (https://opentimestamps.org).
  date published: 2026-06-19T03:51:26Z
  text: {"copyright_id":"0xf782c66d6c5b125e9e900c2afe214f3a0d9a18cfae559a6e96d767e68d4e4d83","name":"Dan Leonard","registered_at":"2026-06-17T17:25:02Z","symbol":"NIM1466291","token_address":"0x1c0eaf2a12fde413c398841a476ee50c635b47ec","type":"artist","uuid":"934da0da-0573-4543-9ce8-ef8e3085f89c"}
album: Time Alone
  type: MusicAlbum
  date published: 1999-09-07
album: Spirits
  type: MusicAlbum
  date published: 2015-11-20