Johann Jakob Froberger
type: MusicGroup
genre: baroque
description: Johann Jakob Froberger (baptized 19 May 1616 – 7 May 1667) was a German Baroque composer, keyboard virtuoso, and organist. Among the most famous composers of the era, he was influential in developing
popularity: 19
followers: 3311
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  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
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album: The Art Of Segovia (Disc I)
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  date published: 2000-01-01
track: Capriccio in G Minor, FbWV 505, Pt. 2
track: Gigue - 1988 Remastered Version
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  by artist: Johann Jakob Froberger
  by artist: Andrés Segovia
  in album: 100 Best Guitar Classics
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    date published: 2008-04-14
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  additional property: OTSVerifyInstructions
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    value: 1. Confirm isrcCode identifies the recording in the pre-2022 source corpus and cc-db-prod record 2. GET OTSVerificationAPI → server-side canonical-record, hash, and attestation checks must pass 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. Confirm CopyrightID is the CopyrightChains transaction hash 5. If all match: the cc-db-prod record is independently anchored on Bitcoin at OTSTimestamp
  subject of: OpenTimestamps Proof of Existence
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    description: Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x33ddc9c20993a5d20bff11a60d9c2ca95088633837d24bf759ae3637bbd60449. Chain 2 (Bitcoin): anchored in block 957124 (2026-07-08T03:53:27Z), registered by our registry partner. The server verifies the private canonical record against OTSHash without exposing internal provider keys. Confirm the public ISRC, CopyrightID, and Bitcoin evidence via https://artists.proofprofile.net/api/v1/bot/ots/verify/track/GBAYC8801373.
    date published: 2026-07-08T03:53:27Z
  audio: Gigue - 1988 Remastered Version
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track: Canzona in C Major, FbWV 305, Pt. 1
track: Canzona in C Major, FbWV 305, Pt. 2
track: Capriccio in G Minor, FbWV 505, Pt. 1

Capriccio in G Minor, FbWV 505, Pt. 2
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by artist: Johann Jakob Froberger
by artist: Gustav Auzinger
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additional property: OTSVerifyInstructions
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subject of: OpenTimestamps Proof of Existence
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  date published: 2026-07-08T03:39:04Z
audio: Capriccio in G Minor, FbWV 505, Pt. 2
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Canzona in C Major, FbWV 305, Pt. 1
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explicit: false
by artist: Johann Jakob Froberger
by artist: Gustav Auzinger
in album: Hart 1627
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  date published: 2024-04-26
popularity: 3
subject of: OpenTimestamps Proof of Existence
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  date published: 2026-07-31T22:27:44Z
audio: Canzona in C Major, FbWV 305, Pt. 1
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additional property: OTSVerifyInstructions
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  value: 1. Confirm isrcCode identifies the recording in the pre-2022 source corpus and cc-db-prod record 2. GET OTSVerificationAPI → server-side canonical-record, hash, and attestation checks must pass 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. Confirm CopyrightID is the CopyrightChains transaction hash 5. If all match: the cc-db-prod record is independently anchored on Bitcoin at OTSTimestamp 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

Canzona in C Major, FbWV 305, Pt. 2
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by artist: Johann Jakob Froberger
by artist: Gustav Auzinger
in album: Hart 1627
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popularity: 3
subject of: OpenTimestamps Proof of Existence
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  date published: 2026-07-31T05:48:18Z
audio: Canzona in C Major, FbWV 305, Pt. 2
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additional property: OTSVerifyInstructions
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  value: 1. Confirm isrcCode identifies the recording in the pre-2022 source corpus and cc-db-prod record 2. GET OTSVerificationAPI → server-side canonical-record, hash, and attestation checks must pass 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. Confirm CopyrightID is the CopyrightChains transaction hash 5. If all match: the cc-db-prod record is independently anchored on Bitcoin at OTSTimestamp 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

Capriccio in G Minor, FbWV 505, Pt. 1
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by artist: Johann Jakob Froberger
by artist: Gustav Auzinger
in album: Hart 1627
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popularity: 3
subject of: OpenTimestamps Proof of Existence
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  date published: 2026-08-01T03:41:24Z
audio: Capriccio in G Minor, FbWV 505, Pt. 1
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additional property: OTSVerifyInstructions
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  value: 1. Confirm isrcCode identifies the recording in the pre-2022 source corpus and cc-db-prod record 2. GET OTSVerificationAPI → server-side canonical-record, hash, and attestation checks must pass 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. Confirm CopyrightID is the CopyrightChains transaction hash 5. If all match: the cc-db-prod record is independently anchored on Bitcoin at OTSTimestamp 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