# "address poisoning" — X 热门讨论 (2026-09-28 15:18 UTC)

## @siraj_dev122 (Daniel) · 09-28 12:35 · ♥121 ↻0 💬145 Crypto payments have a simple problem that people often overlook.

@Americanfort_io is taking a different approach with FortressName.

Wallet addresses are long, confusing, and easy to get wrong. Address poisoning makes this even more risky, especially when someone copies an address from their transaction history.

Instead of sending funds to a long wallet address, users can send to a readable @name. The wallet generates a fresh one time address for each payment, while the transaction still settles on the native blockchain.

Another useful detail is that a FortressName does not publicly expose one fixed wallet address, balance, or payment history.

It's a practical approach to making crypto payments easier without treating privacy as an afterthought.

You can claim a free FortressName here: https://x.com/siraj_dev122/status/2104550672343740593

## @obchakevich_ (Alex) · 09-28 10:40 · ♥25 ↻4 💬11 What Circle is actually buying: Tazapay on-chain

On 8 September 2026 Circle announced it would acquire Tazapay, a Singapore B2B cross-border payments company with a claimed $25B in annualised volume and payouts in over 100 markets. @circle_ventures had led its Series B extension six months earlier. The press release talks about rails, licences and last-mile reach. It does not say how much of Tazapay's business already runs on USDC. The blockchain does.

the route

The product is simple: a client funds its account with USDC, @tazapay pays the client's suppliers in local fiat. On-chain this is a fixed route. Roughly 60% of deposits arrive through a settlement contract on @0xPolygon and @ethereum; the rest comes as direct transfers to a treasury wallet from a handful of large counterparties. From there funds move through an intermediate wallet to two addresses @arkham labels as Circle deposits, are redeemed for dollars and leave the chain. Virtually every stablecoin that enters Tazapay exits through Circle.

The contract is the newer piece: testing from April, production from July. $54M in July, $472M in August, $572M in the first 25 days of September, average ticket around $300K. Each call is three transfers: the client pays in, the contract forwards the round invoice amount to treasury, 2 basis points go to a fee address. These are not merchant checkouts but treasury-sized deposits from a small number of corporate clients.

the number that matters

The cleaner metric is what reaches @circle. Counting only transfers from the four wallets I can tie to Tazapay, monthly redemptions run $190M in June, $356M in July, $449M in August and $562M in the first 25 days of September. Polygon has been flat since July at $340 - 370M; all of September's growth is Ethereum, almost triple in a month, which means at least one large new client.

Annualised, that is roughly $8B of @USDC. Set against Tazapay's own $25B, allowing that the figures measure different things, about a third of its payout business is already funded in stablecoins. In June it was under 10%.

This changes the reading of the deal. Circle is not buying a channel that might one day route volume through USDC. It is buying a customer that already burns over half a billion dollars of USDC a month through Circle Mint, and the fiat rails on the far side. That is vertical integration of an existing flow, not an option on a future one.

what is not there

There is no mint: over four months no USDC was issued to any of the four wallets. The product is one-directional, stablecoin in, fiat out. @tazapay is an off-ramp, and Circle is buying off-ramp capacity where it has none.

There are no stablecoin payouts: apart from redemptions, the treasury cluster sent out one transfer of $9.9M and two smaller ones. The "stablecoin payroll" on Tazapay's site describes the funding leg, not the disbursement leg.

There is almost no on-chain revenue: 2 basis points, about $150K on $750M of Polygon volume in August and September. The margin lives in the FX spread at the off-ramp, where no explorer can see it. The chain is a cost centre; the currency conversion is the business.

what changed in september

The route was stable from June. On 3 September, five days before the announcement, a wallet that had previously only funded the treasury began sending directly to @circle. From 8 September $158M went through it in eight days, and on 20 September the old @0xPolygon route went quiet. In three weeks around the announcement Tazapay rewired its on-chain operations, most likely in preparation for closing: new custody or new Circle Mint accounts. The timing fits the deal; the mechanism is not visible, and I would not go further than that.

A footnote: dozens of addresses mimicking Tazapay's counterparties have been sending zero-value transfers to its wallets for months. Address poisoning at $7M per transaction is a rational attack, and a reminder that behind "instant settlement" there is a person checking forty hex characters.

the caveats

The Polygon Circle address is effectively dedicated to Tazapay. The Ethereum one is not: over a third of its September inflows cannot be attributed, so Ethereum figures are a floor. Clients who fund Tazapay in fiat are invisible on-chain, so the stablecoin share is an estimate against a self-reported denominator. And four months of data is enough for a trend, not enough to annualise with confidence.

the turn

The stablecoin sandwich, fiat to token to fiat, is usually described as a bridge that disappears once both ends are on-chain. Tazapay's numbers say the opposite: all of the value is in the bread. Nobody on the receiving end wants the token, the token earns the intermediary two basis points, and the entire product is the fiat leg that stablecoins were supposed to make obsolete. Circle understood this.

Buying @tazapay is an admission that $USDC growth in cross-border commerce runs on off-ramps, and that they are better owned than rented. https://x.com/obchakevich_/status/2104521737077506436