Simplified Payment Verification (SPV)

[bpalaggi]

As a user, I want to be able to verify payment from a "simple device", such as a phone, without relying on having to download the full blockchain state and validate everything.

This will be addressed by making a block verifiable, then providing a Merkle Path within this block.

[Geod24]

CC @MichaelKim20 @TrustHenry : Since we have both Merkle path verification and block signature, I think all that is needed is the implementation on your side. When do you think you can get to it ?

[Geod24]

So questions that this bring:

• Does Stoa have the required APIs for us ? Currently we have the API in Agora, but we want clients to interact with Stoa.
• Does Stoa expose a way to only get the block header ?
• What policy do we apply in the client for block header retention ?
• How much consensus rules can we and should we check in the client (most important question) ?
• Provided an implementation that does periodic polling on a hash, how much story point would an implementation be ?