Piano Sonata No. 7 in C, K.309: 3. Rondo (Allegretto Grazioso)

Recording identifiers

ISRC

ITUM71700451

Release date of the album this recording appears on

2017-04-14

CopyrightID (CopyrightChains transaction hash)

0xfec55343bbfd6058f5b59ac9572b8ef2c207587646ca6200d1c2b0b4cf721bb7

Copyright registration time

2026-07-29T17:51:19+00:00

OpenTimestamps proof evidence

Bitcoin-attested timestamp

2026-07-29T21:13:37Z

Bitcoin block

960145

Canonical record hash

sha256:11e58ec5efa4b3a2f4ddb892fe106bf3db35b0d4ef5f3139d941103bc0df09c8

• Verify the CopyrightID on CopyrightChains
• Verify the Bitcoin block independently
• Read the machine-verifiable OTS result
• Recording evidence summary for ISRC ITUM71700451

What this proof establishes

This recording was released in 2017, before generative AI. ProofProfile's catalogue derives from the pre-2022 AcousticBrainz and MusicBrainz source corpus, and 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.