Samenzang uit de Bovenkerk te Kampen
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    date published: 2026-07-29T22:48:59Z
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track: Psalm 68
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  by artist: Samenzang uit de Bovenkerk te Kampen
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  subject of: OpenTimestamps Proof of Existence
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    date published: 2026-07-08T03:22:41Z
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track: Psalm 42, vers 1, 3 en 5
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    date published: 2016-11-17
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  subject of: OpenTimestamps Proof of Existence
  audio: Psalm 42, vers 1, 3 en 5

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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

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date published: 2026-07-08T08:56:20Z

Psalm 42, vers 1, 3 en 5
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