Al Viola
type: MusicGroup
description: Alfred Viola (June 16, 1919 – February 21, 2007) was an American jazz guitarist who worked with Frank Sinatra for 25 years. He played the mandolin on the soundtrack of the film The Godfather. Biograp
popularity: 5
followers: 520
additional property: CopyrightID
additional property: CopyrightChainExplorerURL
  type: PropertyValue
  value: https://explorer.copyrightchains.com/tx/0x1a030fe4cf43f3f74326824943d03e26c469f6ba19b57059f99c8f8e24282f85
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/b30937dd-38f3-478c-a4f2-a4e7256402fc.ots
additional property: OTSRecordURL
  type: PropertyValue
  value: https://artists.proofprofile.net/proofs/artist/b30937dd-38f3-478c-a4f2-a4e7256402fc.json
additional property: OTSVerificationAPI
  type: PropertyValue
  value: https://artists.proofprofile.net/api/v1/bot/ots/verify/artist/b30937dd-38f3-478c-a4f2-a4e7256402fc
additional property: OTSTimestamp
  type: PropertyValue
  value: 2026-06-21T07:29:20Z
additional property: OTSCanonicalRecord
  type: PropertyValue
  value: {"copyright_id":"0x1a030fe4cf43f3f74326824943d03e26c469f6ba19b57059f99c8f8e24282f85","name":"Al Viola","registered_at":"2026-06-20T13:51:30Z","symbol":"NIM1624215","token_address":"0x3b9fa1d1405d36050ee43bf28e5516ece54a891f","type":"artist","uuid":"b30937dd-38f3-478c-a4f2-a4e7256402fc"}
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 0x1a030fe4cf43f3f74326824943d03e26c469f6ba19b57059f99c8f8e24282f85. 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/b30937dd-38f3-478c-a4f2-a4e7256402fc.json and https://artists.proofprofile.net/proofs/artist/b30937dd-38f3-478c-a4f2-a4e7256402fc.ots, run `ots verify -f record.json proof.ots` (https://opentimestamps.org).
  date published: 2026-06-21T07:29:20Z
  text: {"copyright_id":"0x1a030fe4cf43f3f74326824943d03e26c469f6ba19b57059f99c8f8e24282f85","name":"Al Viola","registered_at":"2026-06-20T13:51:30Z","symbol":"NIM1624215","token_address":"0x3b9fa1d1405d36050ee43bf28e5516ece54a891f","type":"artist","uuid":"b30937dd-38f3-478c-a4f2-a4e7256402fc"}
album: Solo Guitar
  type: MusicAlbum
  date published: 1957
album: Imagination
  type: MusicAlbum
  date published: 1960
album: Guitars Vol 2
  type: MusicAlbum
  date published: 2000-01-01
album: Solo Guitar
  type: MusicAlbum
  date published: 2000-01-01
album: Guitars Vol 1
  type: MusicAlbum
  date published: 2000-01-01
album: Guitars Vol. 2
  type: MusicAlbum
  date published: 2001-09-20
album: Maid with Flaxen Hair
  type: MusicAlbum
  date published: 2007-07-07
album: Contemporaries of the Jazz Guitar
  type: MusicAlbum
  date published: 2008-07-24
album: Imagination
  type: MusicAlbum
  date published: 2010-07-01
album: Guitars
  type: MusicAlbum
  date published: 2011-10-01
album: If You Love Me, Really Love Me
  type: MusicAlbum
  date published: 2012-02-01
album: Guitars
  type: MusicAlbum
  date published: 2012-06-01
album: All Star
  type: MusicAlbum
  date published: 2014-10-19
album: Alone Together
  type: MusicAlbum
  date published: 2015-01-01
album: My Romance
  type: MusicAlbum
  date published: 2015-01-01
album: Sophistication
  type: MusicAlbum
  date published: 2024-07-26
album: Yesterdays
  type: MusicAlbum
  date published: 2024-07-26