12 Etudes, Op. 25: No. 11 in A Minor "Winter Wind"

Recording identifiers

ISRC

NLA507400914

Release date of the album this recording appears on

2025-01-20

CopyrightID (CopyrightChains transaction hash)

0x622b3e4152fcb07ca95eca21fab6f49b30330c790b9a15626b301ee85d9257ee

Copyright registration time

2026-07-06T10:10:56+00:00

OpenTimestamps proof evidence

Bitcoin-attested timestamp

2026-07-07T16:54:37Z

Bitcoin block

957067

Canonical record hash

sha256:c6d8ee5ffcd8bd72d1f03b20f3add856e648205f1ca6d575b318b8c375e8bced

• Verify the CopyrightID on CopyrightChains
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• Recording evidence summary for ISRC NLA507400914

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.