phase-8

Phase 8 — Wallet sync (how receivers learn updates)

8.1 Detect new finalized batch

Wallet watches Solana for:

• new batch_index / root update

8.2 Fetch DA blob (fast path: sequencer cache)

Wallet fetches DA_blob from:

• sequencer cache/indexer (fast)
• verifies H(DA_blob) == batch_hash from Solana

If mismatch:

• ignore that source and fetch from elsewhere

8.3 Scan/decrypt outputs

Wallet scans encrypted_outputs:

• attempt decrypt with viewing key
• if success: obtain note/state update
• verify inclusion under new_state_root (or store and prove later)

8.4 Mark spent notes

Wallet checks batch nullifiers:

• if any match wallet’s derived nullifiers → mark notes spent

Wallet’s local state updates:

• new unspent notes added
• spent notes removed
• private contract state updated (from decrypted logs)