[Lightning-dev] [BOLT Draft] Onion Routing Spec

[Olaoluwa Osuntokun]

Rusty Russell <rusty at rustcorp.com.au> wrote:

> Some node will have to straddle two chains, right?  So you'd route A ->
> B -> C as normal, and C is (say) litecoin (B straddles both).  You
> really want the onion to be explicit that this transfer to litecoin is
> what the sender intended.  Or some sidechain.
>
> Now, we'd hope nobody would screw this up, but I think it's worth
> flagging since the sender really should know it's changing chains.
>
> Ahh, I'm starting to see your point now.

Agreed that it doesn't hurt to allocate an extra byte in order to make the
chain transitions *explicit*. Alternatively, (instead of modifying the
header) we can simply allocate the first byte of the per-hop payload for
this purpose.

-- Laolu
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