Duo in C Major, Op. 19, No. 1: I. Maestoso

Recording identifiers

ISRC

HUA253228203

Release date of the album this recording appears on

2014-07-15

CopyrightID (CopyrightChains transaction hash)

0xe93dda8a86945290fad600256c968eb76eaa79111900a598a53b70e6fe01ecbb

OpenTimestamps proof evidence

Bitcoin-attested timestamp

2026-08-01T03:13:03Z

Bitcoin block

960500

Canonical record hash

sha256:f6ca7d0cea671719bdeb271470bccfbf616e3ca3b766bf2eff007fd9d56d1bf8

• Verify the CopyrightID on CopyrightChains
• Verify the Bitcoin block independently
• Read the machine-verifiable OTS result
• Recording evidence summary for ISRC HUA253228203

What this proof establishes

This recording was released in 2014, 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.