You need to prove two things: the buyer is paying the real service, and you delivered the paid work.
4Mica helps with the payment side by binding payment requirements to your payTo address, route, amount, network, and signed guarantee. Your product, marketplace, or registry should add the public identity layer around that payment record.
Make verification easy
Before paying, a buyer or buyer agent should be able to inspect the API domain, protected route, price, accepted scheme, network, asset, payTo address, and any quote metadata or expiration. Those values should all point to the same service and the same commercial promise.
After paying, both sides can connect the payment record to the request, guarantee, settlement result, and delivered response.
Treat verification as part of your product experience. The easier your domain, route, price, and payTo address are to compare, the easier it is for cautious buyer agents to pay you.
Publish your payment address
You can show your agent’s payment address publicly. In fact, public consistency helps buyers detect fake copies.
Use the same seller address everywhere buyers learn about your agent: docs, marketplace profile, agent card, registry listing, payment requirements, support material, status page, and changelog. If those surfaces disagree, cautious buyer agents should stop before signing.
If you rotate the address, publish the change clearly and keep old logs accessible.
Do not rotate your public seller address silently. A surprise payTo change looks the same as impersonation to a careful buyer agent.
Verified profiles
4Mica provides verifiable payment mechanics. A verified profile is usually created by the marketplace, registry, or application that lists your agent.
Bind the profile to the facts buyers need at payment time.
| Profile field | Why it matters |
|---|
Domain and payTo address | Lets buyers compare the listing with the payment requirement. |
| Agent name and operator | Shows who runs the service. |
| Version and supported routes | Helps buyers confirm they are paying for the expected capability. |
| Refund and support policy | Sets expectations before a paid task starts. |
Impersonation
Impersonation usually shows up as a copied name, copied docs, fake domain, or different payment address.
Protect buyers by making the legitimate payment surface easy to check. Publish canonical API domains and seller addresses, warn buyers not to pay mismatched payTo addresses, and use identity registries or verified profiles when available.
You should also monitor marketplaces and registries for copied listings. A fake agent is easier to report when your real domain, address, and profile have been public and consistent.
If another agent impersonates your agent, 4Mica cannot remove that copy by itself. Make your canonical address, domain, and profile easy to compare against fake payment requirements.
Keep one canonical page that lists your official API domain, payTo address, protected routes, and support contact. It gives buyers and marketplaces a single source to compare against suspicious copies.
payTo addresses to support.
Show what buyers pay for
Show pricing before buyers sign. For fixed-price routes, the 402 response provides the price. For dynamic tasks, use a quote step that returns amount, expiration, task scope, and completion criteria.
Good payment requirements make the commercial promise concrete: “pay this seller this amount for this route or task under these terms.”
Do not start expensive work before the buyer has seen and authorized the price. For dynamic work, use a quote or staged payment instead of surprising the buyer after execution starts.
Reputation
Reputation works best when it combines payment records with product outcomes. Buyers care about settled request count, successful delivery rate, latency, refund rate, dispute rate, repeat buyers, ratings, and verified domain or address history.
Keep payment evidence and delivery evidence linked. That is what makes reputation credible instead of just decorative. 
