San Jose Fight Song

Recording identifiers

ISRC

QMBZ91562402

Release date of the album this recording appears on

2013-05-20

CopyrightID (CopyrightChains transaction hash)

0xacdd109142cd72f601da4b36386ca9652d87415607c82f7725e97ed5d49ba185

Copyright registration time

2026-07-22T16:21:29+00:00

OpenTimestamps proof evidence

Bitcoin-attested timestamp

2026-07-22T16:43:41Z

Bitcoin block

959155

Canonical record hash

sha256:982db773b3f574669a1c44c495d5aa08b0d1f344b6eec3c1d1eee7e546fd8ad8

• Verify the CopyrightID on CopyrightChains
• Verify the Bitcoin block independently
• Read the machine-verifiable OTS result
• Recording evidence summary for ISRC QMBZ91562402

What this proof establishes

This recording was released in 2013, before generative AI. ProofProfile's catalogue derives from the pre-2022 AcousticBrainz and MusicBrainz source corpus, and 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.