When My Baby Plays the Trombone

Recording by Björn Skifs.

Recording identifiers

ISRC
SEAMA0700824
CopyrightID (CopyrightChains transaction hash)
0xf02ea33543e61e8ba393966f370dd0802bdb54cdea89198525a8632c62e1349c
Copyright registration time
2026-07-29T19:28:40+00:00

OpenTimestamps proof evidence

Bitcoin-attested timestamp
2026-07-29T19:35:34Z
Bitcoin block
960138
Canonical record hash
sha256:94538a1743f3239955659d04f9d6531ed8800e2674ba9009465249504eaeed53

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.