Waltz in A Major, Op. 39, No. 15 (Version for piano 4-hands)

Recording identifiers

ISRC

USQX92401779

Release date of the album this recording appears on

2025-04-04

CopyrightID (CopyrightChains transaction hash)

0x4061134f320f2a166e1e9b9db3f2112b8c3a1fb72cdccd7405b7cc09f62c5f12

Copyright registration time

2026-06-06T03:21:03+00:00

OpenTimestamps proof evidence

Bitcoin-attested timestamp

2026-06-13T13:32:09Z

Bitcoin block

953520

Canonical record hash

sha256:5da73790d16dc5a1bbbaff8cc5b79eb29f76796ca390fb1fe35d4d8be14daf32

• Verify the CopyrightID on CopyrightChains
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• Recording evidence summary for ISRC USQX92401779

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.