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

Recording identifiers

ISRC

GBF071741440

Release date of the album this recording appears on

2018-05-04

CopyrightID (CopyrightChains transaction hash)

0xbe652576399398463243fb7508e9bf69cdef0a26e1b8631c5aac744c3e39a4af

Copyright registration time

2026-07-07T06:03:45+00:00

OpenTimestamps proof evidence

Bitcoin-attested timestamp

2026-07-08T03:20:19Z

Bitcoin block

957118

Canonical record hash

sha256:91d857fda92665a05683fb018a4d6c3df515e8a5e14e5b5b93dc37aafc9809ea

• Verify the CopyrightID on CopyrightChains
• Verify the Bitcoin block independently
• Read the machine-verifiable OTS result
• Recording evidence summary for ISRC GBF071741440

What this proof establishes

This recording was released in 2018, 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.