John Leo
type: MusicGroup
description: John Patrick Leo (June 16, 1935 – May 9, 2022) was an American writer and journalist. He was noted for authoring columns in the National Catholic Reporter and U.S. News & World Report, as well as for
popularity: 8
followers: 72
additional property: CopyrightID
additional property: CopyrightChainExplorerURL
  type: PropertyValue
  value: https://explorer.copyrightchains.com/tx/0x26820d9a58d8f27c7c062dd06b9d06694c1ad29da52a2584444d9c03d6c6840f
additional property: OTSHash
additional property: OTSBitcoinBlock
  type: PropertyValue
  value: 954580
additional property: OTSBitcoinBlockVerifyURL
  type: PropertyValue
  value: https://blockstream.info/api/block-height/954580
additional property: OTSProofURL
  type: PropertyValue
  value: https://artists.proofprofile.net/proofs/artist/b75ee9b6-a213-4744-ad76-6b8a9f626618.ots
additional property: OTSRecordURL
  type: PropertyValue
  value: https://artists.proofprofile.net/proofs/artist/b75ee9b6-a213-4744-ad76-6b8a9f626618.json
additional property: OTSVerificationAPI
  type: PropertyValue
  value: https://artists.proofprofile.net/api/v1/bot/ots/verify/artist/b75ee9b6-a213-4744-ad76-6b8a9f626618
additional property: OTSTimestamp
  type: PropertyValue
  value: 2026-06-20T17:48:00Z
additional property: OTSCanonicalRecord
  type: PropertyValue
  value: {"copyright_id":"0x26820d9a58d8f27c7c062dd06b9d06694c1ad29da52a2584444d9c03d6c6840f","name":"John Leo","registered_at":"2026-06-20T15:10:48Z","symbol":"NIM1640949","token_address":"0xf58107b8aa2955e3df503c96d30b9070fbd0988a","type":"artist","uuid":"b75ee9b6-a213-4744-ad76-6b8a9f626618"}
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 0x26820d9a58d8f27c7c062dd06b9d06694c1ad29da52a2584444d9c03d6c6840f. Chain 2 (Bitcoin): anchored in block 954580 (2026-06-20T17:48:00Z). Bridge: the canonical record inside this Bitcoin proof contains the same CopyrightID. Verify: download https://artists.proofprofile.net/proofs/artist/b75ee9b6-a213-4744-ad76-6b8a9f626618.json and https://artists.proofprofile.net/proofs/artist/b75ee9b6-a213-4744-ad76-6b8a9f626618.ots, run `ots verify -f record.json proof.ots` (https://opentimestamps.org).
  date published: 2026-06-20T17:48:00Z
  text: {"copyright_id":"0x26820d9a58d8f27c7c062dd06b9d06694c1ad29da52a2584444d9c03d6c6840f","name":"John Leo","registered_at":"2026-06-20T15:10:48Z","symbol":"NIM1640949","token_address":"0xf58107b8aa2955e3df503c96d30b9070fbd0988a","type":"artist","uuid":"b75ee9b6-a213-4744-ad76-6b8a9f626618"}
album: Kingdom on Mars
  type: MusicAlbum
  date published: 2020-09-11
album: Smile for the Camera! EP
  type: MusicAlbum
  date published: 2022-12-05
album: Happy Hazmats EP (Smile for the Camera! Volume II)
  type: MusicAlbum
  date published: 2023-08-30