The last call

Recording by Otto M. Schwarz.

Recording identifiers

ISRC
ATP571096150
CopyrightID (CopyrightChains transaction hash)
0x6e7fc52d22ed8327cdb0f4c0f3f3176776cc35edeb272f2f8f734cb66d4b6c1a
Copyright registration time
2026-06-18T14:09:28+00:00

OpenTimestamps proof evidence

Bitcoin-attested timestamp
2026-07-02T03:30:09Z
Bitcoin block
956302
Canonical record hash
sha256:cee4afba56453f52e97e2d6293f3e1f4285748880ddfffa7ffb2b1eb3ddbb8c7

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.