String Quartet No. 16 in F Major, Op. 135: 3. Lento assai, cantante e tranquillo

Recording identifiers

ISRC

GBBBA0401043

CopyrightID (CopyrightChains transaction hash)

0xf2a3a33f624ccc64d576a2baad02cae5401bc415c971ee955b1e8cbdc1e87a49

Copyright registration time

2026-07-06T07:25:01+00:00

OpenTimestamps proof evidence

Bitcoin-attested timestamp

2026-07-07T11:02:43Z

Bitcoin block

957026

Canonical record hash

sha256:0bb4c75d14685f5512f1e7e67f6194f2dd6b0bad2c6b42fe455d536959490c24

• Verify the CopyrightID on CopyrightChains
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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.