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Roadmaps on One Side, Real Bugs on the Other

Ethereum sketches 25-second rollup payments, Samsung and the Solana Foundation announce, and the XRP Ledger and Ledger's hardware wallets show what has already gone wrong.

Last week I set a rule for this column: follow measured fee revenue, not announcements (The First Venue Picks a Public Chain, and Its Own Fuel). This week tested it. Nearly every piece of good news for the coins AlgoMint accumulates was a plan, a release, or a launch date. The things that actually happened were failures. So this week's read is short on conviction changes on purpose: the promises go on a watch list, and the incidents get weighed now.

The lead

Two Ethereum changes, stacked, could bring payments across Ethereum's rollups down to about 25 seconds with no bridge in the middle, according to a worked example posted on Ethereum's research forum (ethresear.ch). The first is the Fast Confirmation Rule (FCR), merged into Ethereum's consensus specifications on April 16, 2026. It is a rule each node applies, not a network upgrade: once enough validators have attested to a block, a node can treat it as safe about one slot after it lands (roughly 13 seconds, per the post), instead of waiting about 13 minutes for full finality. The second is the Ethereum Economic Zone (EEZ), a shared zone of rollups that the post says is built by Gnosis and ZisK with Ethereum Foundation co-funding. EEZ packs a rollup action and a base-layer action into the same Ethereum block, so a payment never has to cross a bridge. Stacked, a payment lands in one block and is treated as safe one slot later: about 25 seconds.

The caveats are in the same post, and they matter more than the headline. FCR holds only while validator attestations arrive on time and no more than a quarter of stake behaves adversarially. When those conditions break, a node falls back to waiting for finality, and an FCR confirmation has no slashing penalty behind it. EEZ works only between contracts inside its zone, so "any rollup" means any rollup that joins. Its contracts are still unaudited, and the demo used a stand-in signer where a real proof belongs. The first atomic transaction of this kind landed on Ethereum mainnet on October 5, and the post describes it as much simpler than the checkout example it walks through (ethresear.ch).

So what: this is a credible roadmap, not a result, and the conclusion people want to draw from it starts with "if." If both pieces ship as described, ETH held on a rollup inside the zone becomes spendable at merchants in seconds without trusting a bridge, and the speed argument for routing payments to Solana or to custodial rails gets weaker. None of that has happened, so it does not change what AlgoMint accumulates or how fast. It goes on the watch list, with four things that would make it real: audited EEZ contracts, a real proof system in place of the stand-in signer, named rollups inside the zone, and a payment provider routing actual checkout traffic through it.

What is holding up

Samsung announced that Samsung Wallet will let U.S. users send cross-border remittances in USDC over Solana, starting the last week of October 2026, with conversion to and from local currency built in, on 82 million U.S. Galaxy devices at launch (Solana News). The announcement does not say who pays the network fees, and 82 million is the number of devices that can use the feature, not the number of people who will. So what: a phone maker's default wallet shipping stablecoin payments on Solana is real distribution for the chain. The fuel math is smaller than the headline. Solana's base fee is about $0.0005 a transaction at today's SOL price (CoinGecko). If every one of those 82 million devices sent one transfer a month, that would be about $44,000 of gas before priority fees, under 0.2 percent of the $27.7 million Solana collected over the last 30 days (DefiLlama). This is a reason to keep holding SOL as a payments chain, not a reason to buy more of it ahead of the usage. The scoreboard will show whether the launch moves Solana's fee share.

The Solana Foundation released Solana DvP on October 6, an open-source escrow program for delivery-versus-payment settlement: the asset and the cash change hands together or not at all, between any two counterparties and any settlement agent, such as a bank, custodian, or exchange (Solana News). The Foundation says it has passed external security audits and is ready for real funds, and it is inviting design partners ahead of a production release. J.P. Morgan gave input on settlement practices, with a disclaimer that it did not design, develop, or endorse the program. No institution has said it will use it. So what: atomic settlement is the core of the settlement pillar, and a free, audited, open-source program lowers the cost for an institution to try it on Solana. It is a tool, not adoption. What would count: a named institution settling real volume through it.

The one piece of good news that is already measured: proprietary AMMs (PropAMMs), trading pools where a market maker pushes its own price updates and gets them in ahead of trades, now handle roughly 5 to 10 percent of swap volume on Ethereum mainnet, according to an analysis on Ethereum's research forum (ethresear.ch). In the week of September 14 to 20, Fermi handled $280 million and Metric $178 million, against $6.0 billion on Uniswap. On Solana, BisonFi, HumidiFi, and Tessera V handled $5.6 billion in the same week, against $8.5 billion on the four largest conventional exchanges: about 40 percent of the combined total. The difference is structural. Solana's transaction ordering lets makers cheaply win the race to update prices. Ethereum has nothing like it in the protocol, so its PropAMMs rely on promises from block builders such as Titan to put maker updates first and keep them fresh. Those promises are not enforced by the protocol; makers trust the builder, and a standard for them (ERC-8324) is only proposed (ethresear.ch). So what: a new kind of venue went from nothing to a real share of trading on both chains the thesis holds, which is usage, not a plan. Two cautions on reading it as fuel. Price updates are designed to be cheap, so heavy update traffic does not translate into proportional gas; the scoreboard measures the dollars, not the messages. And on Ethereum the model ties market makers more tightly to a handful of builders, a centralization pressure worth watching.

What is getting harder to ignore

The XRP Ledger patched a bug, present in its code since 2015, that could have let an attacker create XRP from nothing (The Block; CoinDesk). The flaw sat in the ledger's built-in exchange. One payment filling hundreds of tiny offers could push a running total past what the software can count, so the sellers were paid in full while the buyer was charged almost nothing, and the ledger's own check after the transaction relied on the same miscounted total (CoinDesk). Veria Labs, whose AI agent found the bug and built a working exploit, estimated that a single transaction could have minted about 18 trillion XRP, roughly 184 times the total supply. That is the finder's estimate, not a figure from the disclosure report (The Block). Veria reported it on September 22, RippleX shipped the fix in xrpld 3.4.1 on September 25 without saying what it repaired, and the public report followed about two weeks later. RippleX says it found no evidence the flaw was exploited on any public network (CoinDesk), and Ripple paid Veria the bug bounty program's top award, $250,000 (The Block).

How it was fixed matters as much as the bug. Rule changes on the XRP Ledger normally go through amendments, which need more than 80 percent of validators to support them for about two weeks. This fix skipped that process and took effect as each server upgraded, which the report calls a first in more than ten years of amendments. More than 80 percent of validators on the default list were running it the same day (The Block). So what: there are two fair readings, and both hold. The response worked: three days from report to fix, a bounty paid, no known loss. And the ledger's behavior changed within days through a coordinated software release rather than its usual voting window. In an emergency that is the right call. It is also exactly what the structure test in AlgoMint's fuel model screens for: whether a small, coordinated group can change how a chain works without a delay. XRP already fails that model on fuel (about $34,000 of gas over the last 30 days); this week adds a data point on structure. The broader lesson applies to every chain AlgoMint holds. "Enforced by code" holds only as far as someone has checked the code, and a decade-old minting bug in a top-ten ledger was just found by an AI agent. Defenders can now scan old code faster. So can attackers. That argues for weighting chains by the depth of independent review, and for treating none of them as finished.

Ledger says every confirmed case of drained hardware wallets involves devices sold by CryptoBilis, a Southeast Asian reseller that Ledger's own website listed as authorized, and it found an unauthorized hardware implant in at least one affected device (CoinDesk). Blockchain analytics firms trace $93.2 million (Bitquery) to $94.5 million (YFarmX) in stolen funds, mostly USDT and tokens on Tron. Tether froze $10 million in USDT, and Ledger has not confirmed a total (CoinDesk). The Defiant reports that Mark Karpelès flagged another implant, and summarizes Ledger's own security documentation: Genuine Check, the tool that confirms a device is authentic, cannot detect spying implants that leave the secure chip intact (Camila Russo). So what: last week I argued for holding the fuel directly, where you control the keys. This week shows what controlling the keys depends on: the device's path from the factory, not just the chip. The cryptography held; the supply chain did not, and the authenticity check cannot see the gap. It does not change what to accumulate. It changes how to hold it: buy hardware directly from the manufacturer, treat a passed authenticity check as necessary but not sufficient, and treat a discount from a third-party seller as a warning.

The fuel scoreboard

This is the first week the scoreboard ran automatically across all nine tracked chains. Gas collected in each chain's own coin over the last 30 days (DefiLlama): Solana $27.7 million (28.2 percent of tracked gas), Tron $23.4 million (23.9 percent), Ethereum $18.1 million (18.5 percent), BNB Chain $17.9 million (18.3 percent), Bitcoin $7.2 million (7.4 percent), Base $2.9 million (3.0 percent), Arbitrum $0.7 million (0.7 percent), X Layer $45,000, and the XRP Ledger $34,000. Coins AlgoMint holds collect 57.8 percent of the $98.0 million total, up from about 55 percent a week ago (Base and Arbitrum pay gas in ETH, so they count toward it). Ethereum's 30-day gas rose from $16.4 million to $18.1 million; Solana's from $26.5 million to $27.7 million. From next week the digest computes these changes itself. So what: measured fuel moved slightly toward the coins AlgoMint holds. None of this week's announcements has shown up in it yet, and Samsung's launch at the end of the month is the first that could.

The full history, week by week back to January 2024, now lives on the fuel scoreboard, updated every Monday.

What this means for AlgoMint

The week's good news for ETH and SOL was conditional: a payments roadmap with unaudited contracts, a phone-wallet launch two weeks out, a settlement program waiting for its first user. The bad news was realized: a decade-old minting bug, and a hardware supply chain that was compromised before the devices reached their buyers. Applying last week's rule, none of the conditional news changes allocation. The realized news changes how holdings are secured and how chains are weighed on structure, not what gets accumulated.

What I am watching, and what would count:

  • Ethereum's 25-second payments: audited EEZ contracts, a real proof system, named rollups in the zone, and a payment provider routing checkout through it.
  • Samsung Wallet on Solana: whether Solana's share of tracked gas moves after the last week of October.
  • Solana DvP: the first named institution settling real volume.
  • The XRP Ledger: whether a fix outside the amendment process stays a one-off.

Keep the accumulation cadence, hold ETH and SOL as they are, and let the scoreboard, not the roadmap, say when something has changed.

Sources

Everything reviewed for this week's analysis, cited above or not:

Full accounting: this week's review scanned 307 items across 16 sources; the links above are what survived evaluation, plus two references used to size the Samsung item and the scoreboard.

> AlgoMint publishes research and commentary for educational purposes only. None of this is investment advice. Do your own research and size your own risk.

Roadmaps on One Side, Real Bugs on the Other — AlgoMint Insight