ISRC GBCEL1500208
Verified recording
GBCEL1500208 is “How Long?” by Julia Holter,
registered on the CopyrightChains blockchain with CopyrightID
0x06a3705c67f8ba18bdb56d6fb2cb2a0f967019c6092ff3e28ba8b6b2111f0685 and independently timestamped
in Bitcoin block 953520 on 2026-06-13.
Verify the canonical record, hash, and Bitcoin attestation at
https://artists.proofprofile.net/api/v1/bot/ots/verify/track/GBCEL1500208.
Recording identifiers
- ISRC
- GBCEL1500208
- Title
- How Long?
- Artist
- Julia Holter
- CopyrightID (CopyrightChains transaction hash)
0x06a3705c67f8ba18bdb56d6fb2cb2a0f967019c6092ff3e28ba8b6b2111f0685
Dual-chain proof evidence
- Bitcoin-attested timestamp
- 2026-06-13T13:32:09+00:00
- Bitcoin block
- 953520
- Canonical record hash
sha256:882db386ea1c65333c345dfcf7283ce569e64631673c3f4df2a445292a67680e- Verification API (6-check server-side result)
- https://artists.proofprofile.net/api/v1/bot/ots/verify/track/GBCEL1500208
- Bitcoin block existence check
- https://blockstream.info/api/block/953520