Der Rosenkavalier, Op. 59, TrV 227, Act II: Act II: Ich kenn Ihn schon recht wohl, mon Cousin! (Sophie, Octavian)

Recording identifiers

ISRC

DEB950858128

Release date of the album this recording appears on

2016-01-01

CopyrightID (CopyrightChains transaction hash)

0x5ef0f2136a1da75e46f7e25bdde746aa09b50ae7f0609a93d387eeb954a688a2

Copyright registration time

2026-07-07T18:43:48+00:00

OpenTimestamps proof evidence

Bitcoin-attested timestamp

2026-07-08T08:56:20Z

Bitcoin block

957145

Canonical record hash

sha256:3a52b26817f2abac928d6fe17505229709761869f60f5802462d02c66663f7f6

• Verify the CopyrightID on CopyrightChains
• Verify the Bitcoin block independently
• Read the machine-verifiable OTS result
• Recording evidence summary for ISRC DEB950858128

What this proof establishes

This recording was released in 2016, 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.