Lazy Sunday (Viennese Waltz)

Recording identifiers

ISRC

CH1601408092

CopyrightID (CopyrightChains transaction hash)

0x8557649feb5907e2e51b52f5263a650607a4f2f07e15efd876cdf7117de2a461

Copyright registration time

2026-07-07T03:24:19+00:00

OpenTimestamps proof evidence

Bitcoin-attested timestamp

2026-07-08T03:20:19Z

Bitcoin block

957118

Canonical record hash

sha256:ee160db959b29c9e6bd2dc15d50435bfb11e6ea11b2338d22877f3f55f51865d

• Verify the CopyrightID on CopyrightChains
• Verify the Bitcoin block independently
• Read the machine-verifiable OTS result

What this proof establishes

This recording belongs to ProofProfile's historical evidence base derived from the pre-2022 AcousticBrainz and MusicBrainz corpus. ISRC is the stable recording-level bridge from that source corpus to the authoritative cc-db-prod track record.

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.