ISRC USB4U0400627
Verified recording
USB4U0400627 is “Chrysanthemum” by Sparkmarker,
registered on the CopyrightChains blockchain with CopyrightID
0x1a4f5d1616f50c707b2e564a23215b1ea4eaef9ea8ee6ffb4a4d7a1a93881151 and independently timestamped
in Bitcoin block 960266 on 2026-07-30.
Verify the canonical record, hash, and Bitcoin attestation at
https://artists.proofprofile.net/api/v1/bot/ots/verify/track/USB4U0400627.
Recording identifiers
- ISRC
- USB4U0400627
- Title
- Chrysanthemum
- Artist
- Sparkmarker
- CopyrightID (CopyrightChains transaction hash)
0x1a4f5d1616f50c707b2e564a23215b1ea4eaef9ea8ee6ffb4a4d7a1a93881151
Dual-chain proof evidence
- Bitcoin-attested timestamp
- 2026-07-30T14:44:50+00:00
- Bitcoin block
- 960266
- Canonical record hash
sha256:af05423b44fa465e027d7ace3a1ac8aa41fb9689174c0a39525fbc226a25441c- Verification API (6-check server-side result)
- https://artists.proofprofile.net/api/v1/bot/ots/verify/track/USB4U0400627
- Bitcoin block existence check
- https://blockstream.info/api/block/960266