Geoff Levin
type: MusicGroup
description: Geoff Levin (born September 14, 1945) is an American rock musician, film/television composer and songwriter. Performing as part of the Black Mountain Boys with Jerry Garcia in the early years of his c
popularity: 3
followers: 147
additional property: CopyrightID
additional property: CopyrightChainExplorerURL
  type: PropertyValue
  value: https://explorer.copyrightchains.com/tx/0xcd838fa176204634943f8a24e0485a17c20226e442dae9e5a6df6e585a2ae0c4
additional property: OTSHash
additional property: OTSBitcoinBlock
  type: PropertyValue
  value: 953879
additional property: OTSBitcoinBlockVerifyURL
  type: PropertyValue
  value: https://blockstream.info/api/block-height/953879
additional property: OTSProofURL
  type: PropertyValue
  value: https://artists.proofprofile.net/proofs/artist/0976cf99-03d8-4faa-a44d-012559ca3eff.ots
additional property: OTSRecordURL
  type: PropertyValue
  value: https://artists.proofprofile.net/proofs/artist/0976cf99-03d8-4faa-a44d-012559ca3eff.json
additional property: OTSVerificationAPI
  type: PropertyValue
  value: https://artists.proofprofile.net/api/v1/bot/ots/verify/artist/0976cf99-03d8-4faa-a44d-012559ca3eff
additional property: OTSTimestamp
  type: PropertyValue
  value: 2026-06-16T02:57:35Z
additional property: OTSCanonicalRecord
  type: PropertyValue
  value: {"copyright_id":"0xcd838fa176204634943f8a24e0485a17c20226e442dae9e5a6df6e585a2ae0c4","name":"Geoff Levin","registered_at":"2026-06-15T16:53:18Z","symbol":"NIM0771570","token_address":"0x09497b6dd93a9012b56e3a94b71026e212962708","type":"artist","uuid":"0976cf99-03d8-4faa-a44d-012559ca3eff"}
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 0xcd838fa176204634943f8a24e0485a17c20226e442dae9e5a6df6e585a2ae0c4. Chain 2 (Bitcoin): anchored in block 953879 (2026-06-16T02:57:35Z). Bridge: the canonical record inside this Bitcoin proof contains the same CopyrightID. Verify: download https://artists.proofprofile.net/proofs/artist/0976cf99-03d8-4faa-a44d-012559ca3eff.json and https://artists.proofprofile.net/proofs/artist/0976cf99-03d8-4faa-a44d-012559ca3eff.ots, run `ots verify -f record.json proof.ots` (https://opentimestamps.org).
  date published: 2026-06-16T02:57:35Z
  text: {"copyright_id":"0xcd838fa176204634943f8a24e0485a17c20226e442dae9e5a6df6e585a2ae0c4","name":"Geoff Levin","registered_at":"2026-06-15T16:53:18Z","symbol":"NIM0771570","token_address":"0x09497b6dd93a9012b56e3a94b71026e212962708","type":"artist","uuid":"0976cf99-03d8-4faa-a44d-012559ca3eff"}
album: Filmscore: Atmospheres
  type: MusicAlbum
  date published: 2008-04-11
album: Medical Mysteries
  type: MusicAlbum
  date published: 2008-09-09
album: Soft and Lite
  type: MusicAlbum
  date published: 2019-11-11
album: Infotronics
  type: MusicAlbum
  date published: 2019-11-20