ISRC DEF059102321
Verified recording
DEF059102321 is “String Quartet No. 15 in D Minor, K. 421: I. Allegro moderato” by Wolfgang Amadeus Mozart,
registered on the CopyrightChains blockchain with CopyrightID
0xa156acabd51dc234a15c66445f8c83d5d373dc010a1a55573e738e784665cfb2 and independently timestamped
in Bitcoin block 960362 on 2026-07-31.
Verify the canonical record, hash, and Bitcoin attestation at
https://artists.proofprofile.net/api/v1/bot/ots/verify/track/DEF059102321.
Recording identifiers
- ISRC
- DEF059102321
- Title
- String Quartet No. 15 in D Minor, K. 421: I. Allegro moderato
- Artist
- Wolfgang Amadeus Mozart
- CopyrightID (CopyrightChains transaction hash)
0xa156acabd51dc234a15c66445f8c83d5d373dc010a1a55573e738e784665cfb2
Dual-chain proof evidence
- Bitcoin-attested timestamp
- 2026-07-31T06:58:00+00:00
- Bitcoin block
- 960362
- Canonical record hash
sha256:93c0c42211aa3c5afe19739315ae3c9f9ec8165dbd56c75e23703a5c6e9e5409- Verification API (6-check server-side result)
- https://artists.proofprofile.net/api/v1/bot/ots/verify/track/DEF059102321
- Bitcoin block existence check
- https://blockstream.info/api/block/960362
Full record
Track page: String Quartet No. 15 in D Minor, K. 421: I. Allegro moderato · Machine-readable JSON-LD