II. Andantino from Concerto for Flute & Harp, K. 299 in C Major

Recording identifiers

ISRC

USBC10900673

Release date of the album this recording appears on

1975

CopyrightID (CopyrightChains transaction hash)

0x2a6788eee0d20cd7024eca0815f6940f5146352df3455b2af35742c82831b881

Copyright registration time

2026-07-07T06:24:46+00:00

OpenTimestamps proof evidence

Bitcoin-attested timestamp

2026-07-08T03:20:19Z

Bitcoin block

957118

Canonical record hash

sha256:9b478455dc8cf1f8d22c322a568f13108c189c70e8001f91bcc85505aef2b430

• Verify the CopyrightID on CopyrightChains
• Verify the Bitcoin block independently
• Read the machine-verifiable OTS result
• Recording evidence summary for ISRC USBC10900673

What this proof establishes

This recording was released in 1975, 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.