ISRC DEF057700223
Verified recording
DEF057700223 is “Symphony No. 4: II. In gemächlicher Bewegung, ohne Hast” by Gustav Mahler,
registered on the CopyrightChains blockchain with CopyrightID
0xcef581aa5f5e99b5659e7d7476765d7f8a9c4b2fddbcb4fc6023e059b1deb0c7 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/DEF057700223.
Recording identifiers
- ISRC
- DEF057700223
- Title
- Symphony No. 4: II. In gemächlicher Bewegung, ohne Hast
- Artist
- Gustav Mahler
- CopyrightID (CopyrightChains transaction hash)
0xcef581aa5f5e99b5659e7d7476765d7f8a9c4b2fddbcb4fc6023e059b1deb0c7
Dual-chain proof evidence
- Bitcoin-attested timestamp
- 2026-07-08T03:20:19+00:00
- Bitcoin block
- 957118
- Canonical record hash
sha256:95b2e06e98c76c96e2ba98fd0fc5ca1d6c2d549fa31d44e17a56fb2bd99c0a8d- Verification API (6-check server-side result)
- https://artists.proofprofile.net/api/v1/bot/ots/verify/track/DEF057700223
- 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