Tokyo edition

Robinhood Chain is Robinhood's permissionless Ethereum Layer 2, built on Arbitrum technology, using ETH for gas and aimed at tokenized stocks and onchain apps. HOOD Summit is the company's annual event. A 10 August newsroom post already set Houston for 29-30 September. The 16 September teaser does not change those dates. In late September, Central Time is daylight time (UTC-5), so 5:30 p.m. CT is 22:30 UTC. Specific chain, wallet or brokerage features remain unnamed until the keynote.

Sunrise lists assets for trading on Solana. Yesterday it listed Rumble's RUM through Backpack Securities. Today's PEPE posts do not repeat that Backpack Securities issuance language, so the legal wrapper, if any, is not stated in the primary posts. @solana described PEPE as one of the largest memecoins, built around the recognizable frog, and told users to verify the address on Orb Markets. The listed apps are routing venues, not proof of deep liquidity or of a canonical bridge from Ethereum. Fake PEPE mints are common on Solana. The evidence is the listing and app-availability notices, not onchain volume, holder counts, or a published prospectus.

A Solana slot is the short window in which a designated validator can produce a block. SIMD-0525, authored by Brennan Watt at Anza, reduces target slot time from 400ms toward 200ms while keeping 64 ticks per slot, four-slot leader windows, and 432,000-slot epochs. At 250ms the spec targets four slots per second, a 1.0-second leader window, about 30 hours per epoch, and 37.5 million maximum block compute units, down from 60 million at the 400ms baseline. Feature gates take effect one epoch after they activate so shred limits can change cleanly. The 200ms stage would target five slots per second and about 24-hour epochs. Anza said that step is next and did not publish an activation date. The GitHub SIMD is still marked Draft; the live evidence is Anza's mainnet confirmation, which Solana amplified.

Supercoin is a South African issuer backed by NYSE-listed Super Group (SGHC). It describes ZARsc as a Rand-pegged SPL token meant for moving Rand value on Solana rather than as a speculative asset. The 18 September Supercoin article includes a Solana Foundation payments quote from Maya Caddle and says reserves stay onshore at Absa, with monthly assurance reports published on Supercoin's site. Supercoin also names Luno, VALR, and OVEX as venues. A 2 September Supercoin article already said ZARsc was available on Orca, Solana's DEX, so onchain access predated this window. Footer text on some Supercoin pages still gives conflicting consumer-wallet dates; those dates are not used here. Supercoin does not, in the posts reviewed, publish circulating supply, U.S. eligibility, or a new DEX listing unique to 18 September.

Account abstraction is the effort to make crypto wallets feel closer to normal apps: sign in with a passkey, let an app pay the fee, and batch several steps into one confirmation. Base pushed EIP-8130 for scale, customization and compliance. Ethereum's EIP-8141, also called Frame Transactions, is aimed at censorship resistance, privacy and post-quantum readiness. After months of talks, that merge attempt failed. CoinDesk's 16 September write-up is why the split is still the live watch item: multi-chain wallets may need two transaction formats. EIP-8141 remains a must-ship candidate for Ethereum’s Hegotá upgrade. EIP-8130 has been exercised on Base’s Vibenet test network. An earlier assumption that EIP-8130 would ride Base's September Cobalt upgrade does not match Base's current Cobalt documentation, which instead lists B20 token-standard improvements, validity transactions that execute only when onchain conditions match, dynamic node upgrades in metrics-only mode on mainnet, and a move of Base infrastructure into a Trusted Execution Environment. Those Cobalt dates are published targets, not a guarantee, and the official page does not give a clock time. B20 itself has been live on Base mainnet since the June Beryl upgrade. It is a native, ERC-20 compatible token type with issuer controls. That is separate from the wallet-standard fight.

Arc is Circle's USDC-gas layer 1, which opened public mainnet on 16 September. x402 is a pay-per-request protocol that uses HTTP 402-style payment challenges so a buyer, including software, can pay a seller in stablecoins. Facilitator Service is Circle's hosted seller-side component: the seller points an HTTP API at Circle, Circle screens both parties, pays settlement gas, and broadcasts the transfer. Docs say a Circle API key is required to settle, with a keyless trial available without a Circle account. Earlier reports quoted Circle CEO Jeremy Allaire saying the facilitator was live around mainnet. Today's @circle post is the company's public product notice in this window. Features may change, and Circle says the service is not approved by a regulator.

Arc is Circle's layer 1 for dollar settlement and agent payments. Public mainnet opened on 16 September, and launch materials already named Portal among day-one tools. The 18 September post is the dedicated user-facing go-live, with Portal presenting itself as one place from first visit to first action. cirBTC is Circle's bitcoin product: Arc told holders of supported wrapped bitcoin on Ethereum to swap into cirBTC there, then bridge to Arc. Portal's earn module names Circle Guarded vaults on the website and Morpho on the Arc post, so users should read the specific vault they deposit into. Disclosures on the site say products have not been reviewed by NYDFS or another regulator, availability varies by jurisdiction, and transactions can be irreversible.

Arc opened public mainnet on 16 September as Circle's USDC-gas chain. Microgrants sit beside Arc Studio and Portal as a way for early apps to get a $500 USDC payout after verification, rather than a priced token sale or a guaranteed venture round. The program still requires a live mainnet link. Circle and Arc already-funded work is excluded. The close time is announced, not a promise that 20 awards will be paid.

Perpetual futures have no expiry and usually use funding payments to track an index. They do not confer voting rights or dividends. Coinbase already offers some U.S. perpetual futures on crypto and indexes, and it has offered stock perps to eligible non-U.S. users. Crypto.com and Kalshi have also pursued stock-linked derivatives through different structures. The 17 September SEC Innovation Exemption covers permissioned trading of tokenized NMS stock that keeps the same rights as the listed share. These proposed perps are a separate CFTC product. Press reports say launch could come later this year if approved. That is not a dated guarantee.

OIRA reviews significant agency actions under Executive Order 12866 before they move further. Prerule means the CFTC is still deciding whether or how to begin rulemaking, which can include an advance notice, and has not issued a notice of proposed rulemaking for comment. Chair Michael Selig had said the agency would use existing authority if CLARITY stalled. The 17 September staff no-action letter for passive trading software is a separate completed staff position. This RIN is the first visible White House-review step for a broader crypto-market action. The next useful document is whatever the CFTC publishes after review, if it publishes one.

Haruko provides institutional crypto technology and, according to secondary reports, connects clients to large numbers of exchanges and chains. Read-only API keys usually cannot withdraw, so the reported fund loss, if confirmed, likely involved a different permission, a downstream control failure, or an undisclosed path. CoinDesk said the intrusion was earlier this week; the public client-impact account landed on 18 September. Named logos on Haruko's site are not a list of the 15 affected clients. Final loss, attacker identity and whether trading data was used remain unconfirmed pending Haruko's report.