Goodbye Maria / How Can Love Survive Waltz - Medley

Recording by Irwin Kostal.

Recording identifiers

ISRC
USRC11403224
CopyrightID (CopyrightChains transaction hash)
0xe94ce01db883aa468652639df6b93173f0d18c20f346c2a3287916b60bb8bd88
Copyright registration time
2026-06-05T17:36:19+00:00

OpenTimestamps proof evidence

Bitcoin-attested timestamp
2026-06-13T12:47:07Z
Bitcoin block
953513
Canonical record hash
sha256:a149afb0be3d089b4cebb41e413ade92a6cf1df1bbb4ec9d10cdb6fc74b69cd5

What this proof establishes

This recording belongs to ProofProfile's historical evidence base derived from the pre-2022 AcousticBrainz and MusicBrainz corpus. 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.