Windjammer
type: MusicGroup
description: thumb|right|upright=1.3|Four-masted, iron-hulled barque Herzogin Cecilie—one of the fastest windjammers built A windjammer is a commercial sailing ship with multiple masts, however rigged. The inform
popularity: 17
followers: 1030
additional property: CopyrightID
additional property: CopyrightChainExplorerURL
  type: PropertyValue
  value: https://explorer.copyrightchains.com/tx/0xea81dc71cb6fc9a83da67093c820e3fe323f82785fe46a9dff14f84e4f76c481
additional property: OTSHash
additional property: OTSBitcoinBlock
  type: PropertyValue
  value: 953588
additional property: OTSBitcoinBlockVerifyURL
  type: PropertyValue
  value: https://blockstream.info/api/block-height/953588
additional property: OTSProofURL
  type: PropertyValue
  value: https://artists.proofprofile.net/proofs/artist/0045f646-2e4e-4ce1-984f-7c0ded06c037.ots
additional property: OTSRecordURL
  type: PropertyValue
  value: https://artists.proofprofile.net/proofs/artist/0045f646-2e4e-4ce1-984f-7c0ded06c037.json
additional property: OTSVerificationAPI
  type: PropertyValue
  value: https://artists.proofprofile.net/api/v1/bot/ots/verify/artist/0045f646-2e4e-4ce1-984f-7c0ded06c037
additional property: OTSTimestamp
  type: PropertyValue
  value: 2026-06-14T04:52:46Z
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 0xea81dc71cb6fc9a83da67093c820e3fe323f82785fe46a9dff14f84e4f76c481. Chain 2 (Bitcoin): anchored in block 953588 (2026-06-14T04:52:46Z). Bridge: the canonical record inside this Bitcoin proof contains the same CopyrightID. Verify: download https://artists.proofprofile.net/proofs/artist/0045f646-2e4e-4ce1-984f-7c0ded06c037.json and https://artists.proofprofile.net/proofs/artist/0045f646-2e4e-4ce1-984f-7c0ded06c037.ots, run `ots verify -f record.json proof.ots` (https://opentimestamps.org).
  date published: 2026-06-14T04:52:46Z
album: Reggae in the Usa
  type: MusicAlbum
  date published: 1991-02-01
album: Best of Windjammer
  type: MusicAlbum
  date published: 1998-01-01
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  type: MusicAlbum
  date published: 2023-06-16
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  type: MusicAlbum
  date published: 2025-06-10
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  type: MusicAlbum
  date published: 2025-11-01