Speak Softly

Recording by Marco Polo.

Recording identifiers

ISRC
USGVJ0700808
CopyrightID (CopyrightChains transaction hash)
0xbf74183a75424e04cbdfe1eb9ce8875e8a87843fcc7b004f64b780b69c95d163
Copyright registration time
2026-07-06T11:02:54+00:00

OpenTimestamps proof evidence

Bitcoin-attested timestamp
2026-07-07T18:39:05Z
Bitcoin block
957073
Canonical record hash
sha256:19778be2c2c4cb0bb5c1517016c39478b4459686e19a1f8efe5c9219d80c22cf

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.