TL;DR: Lightspark is not self-custodial.
In a podcast Kevin Hurley, co-founder and CTO of Lightspark nostr:npub1r8l06leee9kjlam0slmky7h8j9zme9ca32erypgqtyu6t2gnhshs3jx5dk equate a Spark Service Provider (SSP) with an LSP (Lightning Service Provider) which is misleading.
The LSP standard is OPEN. It's based on a public specification. By contrast: The SSP standard is CLOSED, Spark API is proprietary.
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