Sound Off

Recording by John Philip Sousa.

Recording identifiers

ISRC
USJ3V1298584
CopyrightID (CopyrightChains transaction hash)
0x9571f14631dbb8299e55779436a5010c8ffd61d12273c459736c2b2c8612af0f
Copyright registration time
2026-07-06T08:06:37+00:00

OpenTimestamps proof evidence

Bitcoin-attested timestamp
2026-07-13T07:53:33Z
Bitcoin block
957819
Canonical record hash
sha256:98efc91b77924fdf98bb670557f7a601b49e13831ca29c7c01838fa8739770ec

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.