Jazz Concerto: II. Rubato - Tempo

Recording by Zbigniew Seifert.

Recording identifiers

ISRC
PLA552400340
CopyrightID (CopyrightChains transaction hash)
0x0a77c3e795c27b3da2e6d961a096520b968aff961505125da748c02483051850
Copyright registration time
2026-07-07T16:22:45+00:00

OpenTimestamps proof evidence

Bitcoin-attested timestamp
2026-07-08T03:53:27Z
Bitcoin block
957124
Canonical record hash
sha256:d96b4a651476d1e7cdae3bf6bbee524d7b1ca9a30ef1071713d12b33a46a0ee1

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.