ISRC GBUM70819377
Verified recording
GBUM70819377 is “Unknown Caller” by U2,
registered on the CopyrightChains blockchain with CopyrightID
0xe14a44968e57006f1e05a13b2742c5df4ce5e2b2e684d569443dbc68b27eb3c6 and independently timestamped
in Bitcoin block 953515 on 2026-06-13.
Verify the canonical record, hash, and Bitcoin attestation at
https://artists.proofprofile.net/api/v1/bot/ots/verify/track/GBUM70819377.
Recording identifiers
- ISRC
- GBUM70819377
- Title
- Unknown Caller
- Artist
- U2
- CopyrightID (CopyrightChains transaction hash)
0xe14a44968e57006f1e05a13b2742c5df4ce5e2b2e684d569443dbc68b27eb3c6
Dual-chain proof evidence
- Bitcoin-attested timestamp
- 2026-06-13T12:53:06+00:00
- Bitcoin block
- 953515
- Canonical record hash
sha256:eefcbc0c3b47cd6f89b5fda6a816df4bcc27a8d937f23488ee23084851c1db79- Verification API (6-check server-side result)
- https://artists.proofprofile.net/api/v1/bot/ots/verify/track/GBUM70819377
- Bitcoin block existence check
- https://blockstream.info/api/block/953515