ISRC USA2B2402090
Verified recording
USA2B2402090 is “Hollaback” by Old City,
registered on the CopyrightChains blockchain with CopyrightID
0x2a8ea7a0bed5b878429e4fb6ed73777420e9ecbe29fbdf5632c6d699661a190a and independently timestamped
in Bitcoin block 960404 on 2026-07-31.
Verify the canonical record, hash, and Bitcoin attestation at
https://artists.proofprofile.net/api/v1/bot/ots/verify/track/USA2B2402090.
Recording identifiers
- ISRC
- USA2B2402090
- Title
- Hollaback
- Artist
- Old City
- CopyrightID (CopyrightChains transaction hash)
0x2a8ea7a0bed5b878429e4fb6ed73777420e9ecbe29fbdf5632c6d699661a190a
Dual-chain proof evidence
- Bitcoin-attested timestamp
- 2026-07-31T13:06:57+00:00
- Bitcoin block
- 960404
- Canonical record hash
sha256:d55300d7ffde797098929af5a06a6da11c1ef7be2228c3687dd4384d6a9145aa- Verification API (6-check server-side result)
- https://artists.proofprofile.net/api/v1/bot/ots/verify/track/USA2B2402090
- Bitcoin block existence check
- https://blockstream.info/api/block/960404