ISRC ATK940222933
Verified recording
ATK940222933 is “De Koonig (1963) for horn, percussion, piano/Celesta, violin and Cello” by Morton Feldman,
registered on the CopyrightChains blockchain with CopyrightID
0x4dbb2ac61ee2a7c880d0b89cb66d39dc6e4d7cddf9257cd1ea87e430dae30628 and independently timestamped
in Bitcoin block 960334 on 2026-07-31.
Verify the canonical record, hash, and Bitcoin attestation at
https://artists.proofprofile.net/api/v1/bot/ots/verify/track/ATK940222933.
Recording identifiers
- ISRC
- ATK940222933
- Title
- De Koonig (1963) for horn, percussion, piano/Celesta, violin and Cello
- Artist
- Morton Feldman
- CopyrightID (CopyrightChains transaction hash)
0x4dbb2ac61ee2a7c880d0b89cb66d39dc6e4d7cddf9257cd1ea87e430dae30628
Dual-chain proof evidence
- Bitcoin-attested timestamp
- 2026-07-31T02:19:15+00:00
- Bitcoin block
- 960334
- Canonical record hash
sha256:0bc07b042b3f239685c3331f6749b615ed3f6d16ce3ccbb261ccae3262ca35ad- Verification API (6-check server-side result)
- https://artists.proofprofile.net/api/v1/bot/ots/verify/track/ATK940222933
- Bitcoin block existence check
- https://blockstream.info/api/block/960334
Full record
Track page: De Koonig (1963) for horn, percussion, piano/Celesta, violin and Cello · Machine-readable JSON-LD