Blue Topaz

Recording by Columbus State University Trombone Ensemble.

Recording identifiers

ISRC
US9931301073
CopyrightID (CopyrightChains transaction hash)
0xd67c1db416e27e734a698812b804fde62ad67647b538219bdc03f10cead11666
Copyright registration time
2026-07-29T10:47:28+00:00

OpenTimestamps proof evidence

Bitcoin-attested timestamp
2026-07-29T11:07:37Z
Bitcoin block
960095
Canonical record hash
sha256:7fe8dc24ec9adb26dbbcb06fec66f177dd0cecb5ff4707a58036b787972f5bdc

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.