Josef
type: MusicGroup
description: Josef may refer to Josef (given name) Josef (surname) Josef (film), a 2011 Croatian war film Musik Josef, a Japanese manufacturer of musical instruments
popularity: 3
followers: 2975
additional property: CopyrightID
additional property: CopyrightChainExplorerURL
  type: PropertyValue
  value: https://explorer.copyrightchains.com/tx/0x7430b1eeb23fe0877597227881ea50d5da0e8328a9521bda045090cb9af7896a
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/9396b69c-a7d1-487d-a8fb-a9798435dbcd.ots
additional property: OTSRecordURL
  type: PropertyValue
  value: https://artists.proofprofile.net/proofs/artist/9396b69c-a7d1-487d-a8fb-a9798435dbcd.json
additional property: OTSVerificationAPI
  type: PropertyValue
  value: https://artists.proofprofile.net/api/v1/bot/ots/verify/artist/9396b69c-a7d1-487d-a8fb-a9798435dbcd
additional property: OTSTimestamp
  type: PropertyValue
  value: 2026-06-19T03:51:26Z
additional property: OTSCanonicalRecord
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 0x7430b1eeb23fe0877597227881ea50d5da0e8328a9521bda045090cb9af7896a. 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/9396b69c-a7d1-487d-a8fb-a9798435dbcd.json and https://artists.proofprofile.net/proofs/artist/9396b69c-a7d1-487d-a8fb-a9798435dbcd.ots, run `ots verify -f record.json proof.ots` (https://opentimestamps.org).
  date published: 2026-06-19T03:51:26Z
album: Keep Me Rockin
  type: MusicAlbum
  date published: 2010-08-30
album: Dry River
  type: MusicAlbum
  date published: 2016-03-18
album: Bleed Out
  type: MusicAlbum
  date published: 2020-03-20
album: Sahara
  type: MusicAlbum
  date published: 2020-04-03