Tristan und Isolde, WWV 90 / Act 3: Mild und leise wie er lächelt

Recording identifiers

ISRC

GBF075910402

Release date of the album this recording appears on

2020-02-29

CopyrightID (CopyrightChains transaction hash)

0xe53bf4f87bb32dac3b9bfe6936146bec04b4b1f69cfa1061ecfc388ee6db727a

OpenTimestamps proof evidence

Bitcoin-attested timestamp

2026-07-31T12:24:41Z

Bitcoin block

960397

Canonical record hash

sha256:a2208d3bba04e150e217e24870f37d463b60138d87a17b4c068eadbdb900658b

• Verify the CopyrightID on CopyrightChains
• Verify the Bitcoin block independently
• Read the machine-verifiable OTS result
• Recording evidence summary for ISRC GBF075910402

What this proof establishes

This recording was released in 2020, 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.