Looking for a Tennis Ball

Recording identifiers

ISRC

NZDU11200827

CopyrightID (CopyrightChains transaction hash)

0x6caa995e3f17989b07433df5ae8df3a8875901c7dd0b7d89dc0c7f5bd11bb8f9

Copyright registration time

2026-07-31T00:25:10+00:00

OpenTimestamps proof evidence

Bitcoin-attested timestamp

2026-07-31T02:19:15Z

Bitcoin block

960334

Canonical record hash

sha256:b8a6ad7c58b92951ff92423209357042c7ee8eac8eda8f88fe40c5168ead4af4

• Verify the CopyrightID on CopyrightChains
• Verify the Bitcoin block independently
• Read the machine-verifiable OTS result

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.