Det var en gång i Lissabon

Recording by Markus Krunegård.

Recording identifiers

ISRC
SEUM72100184
CopyrightID (CopyrightChains transaction hash)
0x56ef548855154a25023cd5dc6da4effcaedb015bf77e299dfc555aa8e4d4a3b3
Copyright registration time
2026-06-08T13:34:44+00:00

OpenTimestamps proof evidence

Bitcoin-attested timestamp
2026-07-07T18:39:05Z
Bitcoin block
957073
Canonical record hash
sha256:d3a93d4fb8e35bc602e23e50c9bddf5e35d2577871bc51d2bdc0206d7d69e04d

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.