How Many More Times - Remaster

Recording by Led Zeppelin.

Recording identifiers

ISRC
USAT21300924
CopyrightID (CopyrightChains transaction hash)
0x121d1bd50fc9cb4041679d07752833121154cfb62288e09d13e735810c224197
Copyright registration time
2026-06-04T11:07:01+00:00

OpenTimestamps proof evidence

Bitcoin-attested timestamp
2026-06-13T15:41:10Z
Bitcoin block
953528
Canonical record hash
sha256:8c0aac8ef0cbc3c24e93ffcb97683b7745287d401e090222a7dcdce79f69ce4d

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.