Solana payment workflows in one place: deterministic browser tools that recompute Solana-side money movement without an RPC call and without a key. The Token-2022 transfer-fee reconciler, the DvP prefund verifier, and the payment-channel voucher verifier are all live today. This page is the wave's home inside the web3 hub family, and every link resolves in-tree.
Every card points at a page on the site today; each workflow is recomputed in the browser with no RPC call and no key.
Recompute the withheld Token-2022 transfer fee and the net amount a payee should receive, and flag a facilitator that checks the gross amount only. Fixture vectors cover the program's own transfer-fee cases.
Open the workflow →Values-only check of a delivery-versus-payment prefund against its escrow terms: deposit ceiling, settled watermark, expiry and signer claims, each recomputed in the browser before funds move.
Open the workflow →Check a payment-channel voucher against its channel terms: length and magic bytes, channel id, cumulative amount against ceiling and watermark, expiry, supersession, and the settle delta.
Open the workflow →Sum the withheld fee on each token account, reconcile the caller's declared total against the recomputed sum, project the mint's pot after a permissionless harvest under the program's checked_add rule, flag wrong-mint accounts and duplicates, and check where withdrawn fees would land. Built and fixture-tested; zkVM proof deferred to the next batch.
Open the workflow →Recompute a claimed program-derived-address tuple for its exact bump, test the off-curve rule, find the canonical bump over the 255-to-1 scan, expose the second valid address a non-canonical bump hides, and derive the associated token account under a declared token program side by side with the classic Token program for Token-2022 mints. Built and fixture-tested on the pinned Solana sources; zkVM proof deferred to the next batch.
Open the workflow →Last reviewed: October 2026 · guides · Solana Hub · v1.0
Teams reconciling Token-2022 transfer fees who need the net payee amount recomputed independently of the facilitator's gross check.
Desks moving Solana-side delivery-versus-payment flows who verify prefund terms, ceilings, and watermarks before releasing funds.
Reviewers checking a payment-channel voucher's claims, from cumulative amounts and expiry to supersession, without touching chain state.
Part of the web3 hub family: the full directory lives at web3-hub.html.