ISRC DEF057900802
Verified recording
DEF057900802 is “Symphony No. 4: II. In gemächlicher Bewegung, ohne Hast” by Gustav Mahler,
registered on the CopyrightChains blockchain with CopyrightID
0xfbb266e72ac869bdf81cd7fb1bcd426db769823005a3214457008644ce144528 and independently timestamped
in Bitcoin block 957118 on 2026-07-08.
Verify the canonical record, hash, and Bitcoin attestation at
https://artists.proofprofile.net/api/v1/bot/ots/verify/track/DEF057900802.
Recording identifiers
- ISRC
- DEF057900802
- Title
- Symphony No. 4: II. In gemächlicher Bewegung, ohne Hast
- Artist
- Gustav Mahler
- CopyrightID (CopyrightChains transaction hash)
0xfbb266e72ac869bdf81cd7fb1bcd426db769823005a3214457008644ce144528
Dual-chain proof evidence
- Bitcoin-attested timestamp
- 2026-07-08T03:20:19+00:00
- Bitcoin block
- 957118
- Canonical record hash
sha256:21a36ea6fb1e7dfef483d86fe224f646a74ce7705944723d93fe0824ae15d5da- Verification API (6-check server-side result)
- https://artists.proofprofile.net/api/v1/bot/ots/verify/track/DEF057900802
- Bitcoin block existence check
- https://blockstream.info/api/block/957118
Full record
Track page: Symphony No. 4: II. In gemächlicher Bewegung, ohne Hast · Machine-readable JSON-LD