ISRC DEF057700221
Verified recording
DEF057700221 is “Symphony No. 4: III. Ruhevoll, poco adagio” by Gustav Mahler,
registered on the CopyrightChains blockchain with CopyrightID
0xe6db8a8b05ac628ded34645a82ab00ef2546dc5046bb374bd7a67f692d3de35f and independently timestamped
in Bitcoin block 960212 on 2026-07-30.
Verify the canonical record, hash, and Bitcoin attestation at
https://artists.proofprofile.net/api/v1/bot/ots/verify/track/DEF057700221.
Recording identifiers
- ISRC
- DEF057700221
- Title
- Symphony No. 4: III. Ruhevoll, poco adagio
- Artist
- Gustav Mahler
- CopyrightID (CopyrightChains transaction hash)
0xe6db8a8b05ac628ded34645a82ab00ef2546dc5046bb374bd7a67f692d3de35f
Dual-chain proof evidence
- Bitcoin-attested timestamp
- 2026-07-30T05:43:45+00:00
- Bitcoin block
- 960212
- Canonical record hash
sha256:803931479c03331e9c66604ea13d41e816858f81ac98ae189ef8ce29307f848c- Verification API (6-check server-side result)
- https://artists.proofprofile.net/api/v1/bot/ots/verify/track/DEF057700221
- Bitcoin block existence check
- https://blockstream.info/api/block/960212
Full record
Track page: Symphony No. 4: III. Ruhevoll, poco adagio · Machine-readable JSON-LD