ISRC DEA899901160
Verified recording
DEA899901160 is “Once Upon a Summertime” by Nils Landgren,
registered on the CopyrightChains blockchain with CopyrightID
0xd0b98f5b47b3ad6418c020d5a3b4b447d69ddf1d8f14fd1b25a451f006a3945d and independently timestamped
in Bitcoin block 960117 on 2026-07-29.
Verify the canonical record, hash, and Bitcoin attestation at
https://artists.proofprofile.net/api/v1/bot/ots/verify/track/DEA899901160.
Recording identifiers
- ISRC
- DEA899901160
- Title
- Once Upon a Summertime
- Artist
- Nils Landgren
- CopyrightID (CopyrightChains transaction hash)
0xd0b98f5b47b3ad6418c020d5a3b4b447d69ddf1d8f14fd1b25a451f006a3945d
Dual-chain proof evidence
- Bitcoin-attested timestamp
- 2026-07-29T14:28:24+00:00
- Bitcoin block
- 960117
- Canonical record hash
sha256:ed2673ca99aa30831e7b9ebe0ddf7a62543c57a81dc767c499a8911288a807b5- Verification API (6-check server-side result)
- https://artists.proofprofile.net/api/v1/bot/ots/verify/track/DEA899901160
- Bitcoin block existence check
- https://blockstream.info/api/block/960117
Full record
Track page: Once Upon a Summertime · Machine-readable JSON-LD