feat: Private payments approaches learnings #96
Description
Description
End of cycle for the private payments approach. Both the shielded pool and plasma PoCs are built and documented, time to feed the learnings back into the approach card.
Go through both SPECs and READMEs and update the approach card with as much detail as possible:
- Metrics (proof times, gas costs, on-chain data footprint)
- Architectural decisions made during implementation (attestation-gated entry, dual-key pattern, relayer abstraction, deployment models)
- What worked, what didn't, known limitations
- Anything explicitly deferred to future work (SWIFT/ISO20022 integration, cross-tier bridging)
Also, resolve or update open questions where the PoCs gave us answers, and update linked patterns and changelogs.
PoCs: iptf-pocs/pocs/private-payment/shielded-pool/ and iptf-pocs/pocs/private-payment/plasma/