Preludes Op. 28 No. 21 In B Flat Major Cantabile

Recording identifiers

ISRC

KRUM71100159

Release date of the album this recording appears on

2025-04-21

CopyrightID (CopyrightChains transaction hash)

0xbf3a55ca4d1ce1ca8cff73d157788d5bca2682153f4c669a9d584041700064d0

Copyright registration time

2026-06-22T18:46:28+00:00

OpenTimestamps proof evidence

Bitcoin-attested timestamp

2026-07-02T03:55:08Z

Bitcoin block

956304

Canonical record hash

sha256:8667a5a3914b63dc6966a7a408be033691262cdf9fe41f17303b0c6e06874f92

• Verify the CopyrightID on CopyrightChains
• Verify the Bitcoin block independently
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• Recording evidence summary for ISRC KRUM71100159

What this proof establishes

This recording was released in 2025. ProofProfile's artist catalogue derives from the pre-2022 AcousticBrainz and MusicBrainz source corpus, and this recording entered the record through cc-db-prod's ISRC-linked registration. Its provenance rests on the dates stated above rather than on the era of that source corpus.

CopyrightChains and Bitcoin OpenTimestamps make the exact committed record independently verifiable today. The cryptographic proof does not by itself establish authorship or ownership of the underlying recording.

Read the complete pre-generative-AI provenance and verification method.