ISRC DEF056700992
Verified recording
DEF056700992 is “Symphony No. 1 in D Major: I. Langsam, schleppend – Immer sehr gemächlich” by Gustav Mahler,
registered on the CopyrightChains blockchain with CopyrightID
0x9f03db0574352fd836bb831005c663df99df0b85f13da8be5deb47b99ae5a215 and independently timestamped
in Bitcoin block 960138 on 2026-07-29.
Verify the canonical record, hash, and Bitcoin attestation at
https://artists.proofprofile.net/api/v1/bot/ots/verify/track/DEF056700992.
Recording identifiers
- ISRC
- DEF056700992
- Title
- Symphony No. 1 in D Major: I. Langsam, schleppend – Immer sehr gemächlich
- Artist
- Gustav Mahler
- CopyrightID (CopyrightChains transaction hash)
0x9f03db0574352fd836bb831005c663df99df0b85f13da8be5deb47b99ae5a215
Dual-chain proof evidence
- Bitcoin-attested timestamp
- 2026-07-29T19:35:34+00:00
- Bitcoin block
- 960138
- Canonical record hash
sha256:27b38073853e7e765f89fdce51f53395927bfe9198849d8b5d64c668cece9777- Verification API (6-check server-side result)
- https://artists.proofprofile.net/api/v1/bot/ots/verify/track/DEF056700992
- Bitcoin block existence check
- https://blockstream.info/api/block/960138
Full record
Track page: Symphony No. 1 in D Major: I. Langsam, schleppend – Immer sehr gemächlich · Machine-readable JSON-LD