Fees

The fee schedule of record. Final numbers are ratified by the founder at the current stage gate; the schedule below is the one the fee-model harness proves sustainable against every recorded live session shape.

Rail	Dynamo fee	Notes
Token (escrow)	100 bps of settled value	Covers on-chain settlement costs with margin — see the cost floor below
Card	PSP pass-through + 250 bps application fee	The PSP's own charges pass through at cost; the application fee is Dynamo's
Control Mode	$0	No money moves; there is nothing to charge on

Operator-deployed instances configure their own schedule; the numbers above are the protocol defaults and the schedule Dynamo-operated settlement uses.

Fee doctrine

Every fee is an explicit ledger row, asset-denominated, tied to the

settlement that produced it — on every backend. No implicit fees, no netted-away fees, nothing discoverable only by subtraction.

Fee finality rides unit finality. No Dynamo fee is earned before its

units are final. Fees on refunded units are reversed and netted against the payee; an unnettable residue is bounded forgone fee — never a buyer charge, never a booked Dynamo loss.

Failed actions carry no fee because failed actions carry no cost at

all: units that never billed produce no settlement to fee.

Fees exceed costs, provably

A fee schedule that loses money per session is a subsidy with a countdown timer. The fee-model harness computes, for every recorded live session shape in the repository's fixture set (sessions actually run at prior stage gates, with source tags), the rail-specific cost floor:

Token rail: every on-chain operation the session performed, priced at

the recorded per-operation gas from the sealed contract suite's gas report, at the recorded gas price.

Card rail: the PSP's charges pass through at cost, so they are not a

Dynamo margin cost on a clean session. Dynamo's own floor is the non-returned PSP spread on refunded value — processors keep their variable fee when a capture is refunded — which the application fee must clear on every recorded refund shape.

Control Mode: zero cost, zero fee, by construction.

The harness asserts revenue > cost floor for every money-rail session — integer micro-USD arithmetic end to end — and prints the table:

cd /Users/steve/dpv1-aug26 && pwd
make fee-report

The command exits non-zero if any recorded session shape settles below its cost floor, which makes the sustainability claim a CI property rather than a slide. Numbers in the table come exclusively from recorded artifacts (gas reports, PSP TEST-mode charges, demo reconciliation lines) — projections are not inputs.