Tokyo edition

Robinhood Chain is Robinhood's own Ethereum Layer 2, built with Arbitrum technology and live since 1 July 2026. It was pitched for tokenized stocks and onchain finance. Third-party apps, especially the Pons memecoin launchpad, have driven much of the early trading. That is separate from this Arc plan. Arc is Circle's public Layer 1. Fees are paid in USDC, settlement is described as sub-second, and the validator set starts permissioned, with firms such as BlackRock, DTCC, Visa and Mastercard named as founding validators in phases. Public mainnet opened on 16 September 2026. Robinhood's wording is limited: support is coming "soon," and USDC deposit and withdrawal would be available "right on the network where supported." That leaves product surface, eligibility and go-live date unstated. Circle's launch release names Robinhood in a long list of trading, liquidity and execution names. That is not the same as a live Robinhood deposit flow. Readers who want Arc USDC now still have to use Arc Portal, a supporting wallet or exchange, or wait for Robinhood to ship the transfer path.

Column is a U.S. bank (Member FDIC) that sells banking infrastructure to other companies. CEO William Hockey said the firm rebuilt its core so a customer's bank account and stablecoin address sit on the same ledger. That is the claim that matters: conversion is an internal book entry, then a chain send or a fiat rail payout, rather than a wait for a correspondent bank's wire window. Supported assets in the launch materials are USDC and USDT. Networks named by Column are Solana, Ethereum and other major chains. Solana's own post framed the news as USDC and USDT on Solana, convertible to and from dollars 24/7. Column's public API samples set network=solana. The company also says card authorizations can hit the live stablecoin balance and that Visa and Mastercard settlement can be done in stablecoins. Column wrote that it built the product with large fintech customers, naming Slash and Brex, and that stablecoin volume on the stack is already running at tens of billions annualized. Those figures are company-reported. Users never hold the private keys. Access is through Column's APIs and its banking customers, subject to bank compliance.

Phoenix Trade is a Solana-native perpetuals exchange that runs an onchain order book. It has listed crypto, U.S. equity and commodity markets and previously described USDC as the margin asset. Solflare already routes some users into Phoenix from a self-custodial wallet. The 16 September change is collateral, not a new contract list. Official wording is that SOL can back perpetual positions directly and that USDC is not required to do so. Secondary write-ups described an 80 percent collateral weight and USDC settlement of profit and loss. Those mechanics were not in the Phoenix post reviewed here, so they remain unverified. The linked trading URL is live in some locations and blocked in others. Phoenix still labels the venue as live in beta. Anyone using SOL as margin is taking both the perpetual's market risk and SOL's own price risk against the maintenance threshold.

Jupiter is Solana’s main swap aggregator and also runs Earn products, including Offerbook-style looping that borrows against yield-bearing collateral to magnify returns. JUICED Loop is one of those leveraged earn paths. The sunset does not, on the company’s telling, change the JUICED token itself or the JupUSD vaults. The company did not publish a clock-time for the late-September fee magnifier in the posts reviewed.

Account abstraction is the industry term for letting a smart contract, not just a raw private key, approve and pay for transactions. Ethereum and Base tried to keep one native design so a wallet would behave the same on Layer 1 and on Coinbase’s Layer 2. @decentrek said every technical compromise asked one side to give up a core goal, so they split. EIP-8141 and EIP-8130 remain drafts. Hegotá is scheduled after Glamsterdam later this year; a must-ship label is priority, not a guarantee. CoinDesk’s September 16 write-up is secondary coverage of the Monday disclosure.

Arc is Circle's EVM Layer 1, public as of 16 September 2026. Fees are in USDC. Circle describes sub-second finality and a permissioned validator set that will add named institutions in phases. Uniswap Labs said the same products people already use on other chains are wired to Arc: the AMM versions, UniswapX, the web app, the wallet and the API. A swap URL points at chain=arc. Uniswap also said it has processed a large share of onchain stablecoin volume, which is the market Arc is aiming at. cirBTC is Circle's wrapped bitcoin, not native BTC on Bitcoin. Circle says it is backed by BTC in Circle custody, convertible 1:1 from BTC, cbBTC or wBTC with no fees in Circle's own materials, and that reserves are verifiable onchain. Uniswap says anyone can swap or LP it; mint and redeem for institutions go through Circle Mint. That split matters for retail users who can only trade the token, not redeem the underlying. Day-one listing is not the same as deep books. Inspect the Arc pools on app.uniswap.org before assuming size.

Aave is a pooled lending protocol. Users supply assets to earn yield or borrow against collateral. V4 is Aave's current architecture. Arc is Circle's new chain, so this is a fresh instance, not a migration of Ethereum deposits. The official thread is specific: Core Hub, a main market (USDC, EURC, WETH, cirBTC) and a USDC/EURC forex market. Deployment was by Aave Labs on behalf of the DAO. LlamaRisk did the risk analysis. Chainlink is named for oracles. Circle's launch release had already named Aave as credit infrastructure alongside Morpho. cirBTC on this market is Circle's custodied bitcoin token. EURC is Circle's euro stablecoin. Borrowing across those two in the forex market is a stablecoin basis trade, not a crypto-beta loan. The explore link is the place to verify which reserves are enabled, what LTV applies and whether liquidity is still thin after genesis. Geographic and compliance screens on Aave's frontend may still apply.

Morpho is an onchain lending network. On Base it already powers Coinbase-branded crypto-backed loans and USDC lending. Circle’s Arc launch named Morpho and @aave as the day-one credit venues. Morpho’s own post and blog are the first-party evidence that variable-rate Morpho Blue is the live piece, while several distribution and fixed-rate products remain on a later list.

U.S. tax law still treats most crypto as property. Spending a token, including to pay a network fee, can create a capital gain or loss. Brokers are already sending Form 1099-DA data to the IRS. That is why a de minimis rule has been a long-running industry request. H.R. 10357 does not create a general exemption for buying coffee. The $10 figure applies to qualifying network and transaction fees. People with more than 5,000 digital-asset transfers in the prior year, plus certain brokers, dealers and validators, would be carved out, subject to later Treasury rules. Separate titles cover simplified accounting for widely traded assets, dollar stablecoins, lending agreements, charitable gifts, broker reporting and a voluntary disclosure program. Mining and staking are addressed as to source and character. A staking deferral idea from earlier drafts is not in this vehicle. The Joint Committee on Taxation estimated a net $500 million revenue raise over fiscal 2027-2036, with wash-sale rules raising money and the small-fee exception costing money. Those are staff estimates, not enacted effects. Committee passage is one step. The House and Senate would still have to pass identical text. Coverage notes the chamber is leaving until after the midterms, which makes 2026 enactment unlikely even though the 38-5 vote was broadly bipartisan.

Deutsche Bank is Germany’s largest bank. Its September 16 media release says the custody service is designed so clients do not have to build their own wallet infrastructure. Bloomberg timed the statement at 06:00 UTC. The bank has previously worked with digital-asset specialists including Bitpanda and Taurus, according to secondary reports; the official release says it will use selected external technology providers for defined components and does not name them. Crypto-assets would not have deposit-guarantee protection comparable to bank deposits.