Whitepaper ◆ v1.0 ◆ 2026

YARROW

The world's assets. Always open.

Abstract

YARROW is an interface and ledger for the tokenized-asset era: a venue where equities, ETFs, private-market instruments, and always-open derivatives meet self-custody. It is built on Robinhood Chain — the permissionless, Ethereum-compatible Layer-2 purpose-built for real-world assets — and pairs a real-data market surface with a wallet-native member portal. This document states the thesis, describes the architecture and platform, specifies the $YARROW meme token's launch mechanics, and sets out the security model and risk disclosures. It makes no promises of profit anywhere in its pages.

01The thesis

Markets close. The New York Stock Exchange trades six and a half hours a day, five days a week — roughly 19% of the hours in a year. For the rest, price discovery stops, settlement waits, and ownership sits in intermediated databases a retail holder can neither inspect nor move. Meanwhile, the crypto markets proved a different property is possible: assets that settle in seconds, custody that belongs to the holder, and venues that never sleep.

Tokenization joins the two worlds. A tokenized equity is a blockchain instrument that tracks a real security while inheriting the chain's properties — transferable at 3 a.m. on a Sunday, composable with DeFi, held under the owner's own keys. Robinhood's stock-token program brought 200+ US equities and ETFs onchain and, with Robinhood Chain, gave them dedicated settlement infrastructure. YARROW is a venue built natively for that world: the world's assets, always open.

02The foundation — Robinhood Chain

Robinhood Chain (chain ID 4663) is a permissionless, Ethereum-compatible Layer-2 built on Arbitrum technology. It settles to Ethereum using blob data availability, uses ETH as native gas, and sequences transactions first-come-first-served. It is EVM-equivalent — Solidity contracts, Foundry, viem, and wagmi work unchanged — and ships first-class ERC-4337 account abstraction: gas sponsorship, session keys, and smart accounts for consumer-grade UX.

The chain's ecosystem supplies the financial plumbing YARROW composes with: Chainlink oracles, LayerZero bridging, Uniswap for spot liquidity, Morpho for lending, and perpetuals venues (Lighter, Arcus). Public infrastructure — RPC at rpc.mainnet.chain.robinhood.com, Blockscout explorer at robinhoodchain.blockscout.com — keeps every claim in this document independently verifiable.

03The platform

The board. A live market surface for the tokenized universe: equities, ETFs, and private-market names, quoted from real public market data with day ranges, volumes, and daily-close history. Instruments without a public feed — private-market tokens like OpenAI and SpaceX — are shown without a price rather than with an invented one. This is a design principle, not a limitation: YARROW displays only real observed data, everywhere, always.

The portal. Membership is a wallet signature. Sign in with MetaMask — one signed message, no passwords, no email, no personal data — and the portal reorganizes around your address: a watchlist, a practice book, and your on-chain standing. Sessions are short-lived signed tokens; the server stores nothing but your address and your choices.

The practice book.Longs and shorts, marked against real quotes at open and close, persisted per wallet. It is explicitly a simulation — no custody, no leverage, no brokerage order — built on the conviction that people should rehearse a market's rhythm before they pay tuition to it.

The venue, forward.As Robinhood Chain's mainnet ecosystem matures, YARROW's roadmap runs toward direct integration: stock-token spot through chain-native liquidity, perpetuals through partner venues, and RWA collateral flows — each shipped only when it can run against real, audited on-chain infrastructure.

04The $YARROW token

$YARROW is a meme token. It exists for community and lore. It is not equity in the platform, carries no governance, revenue, redemption, or utility rights, and no one — including its creators — should expect it to hold or gain value. With that stated plainly, its launch mechanics are designed to be the fairest the chain's infrastructure allows:

The definitive parameters are the ones enforced on-chain. At launch, the contract address will be published on this site's token page first; treat any earlier address as fraudulent.

05Security model

Custody-free by design. YARROW never holds keys, funds, or assets. Authentication is proof-of-key: the server issues a single-use nonce, the wallet signs it, the server verifies the signature cryptographically and mints a short-lived, httpOnly session token. There is no password database because there are no passwords.

Hardened surface. Every response carries a strict Content-Security-Policy, HSTS, frame denial, and tight referrer/permissions policies. Mutating API calls are rejected cross-origin, rate-limited per client, and validated server-side; prices for practice positions are stamped by the server from the live feed — a client can never supply its own price. Secrets live in environment configuration, never in the repository; data persists in Postgres over TLS.

Verifiability.Chain telemetry is read from the public RPC and explorer; market data from public feeds; the token's mechanics from contracts anyone can read. Where YARROW cannot verify a number, it shows nothing rather than something invented.

06Risk & legal

Digital assets are volatile; meme tokens extremely so, and frequently go to zero. Tokenized equities track — but are not — the underlying security, and add issuer, smart-contract, bridge, and liquidity risk to ordinary market risk. Nothing in this document or on this site is investment, legal, accounting, or tax advice, and nothing is an offer or solicitation in any jurisdiction where such an offer would be unlawful. Acquiring $YARROW may be restricted where you live — including for US persons — and you are solely responsible for your compliance. YARROW is an independent project and is not affiliated with, endorsed by, or sponsored by Robinhood Markets, Inc.

The governing documents are the Terms of Service, Privacy Policy, and Meme Token Terms. Where this narrative and those documents differ, the documents control.

YARROW ◆ chain id 4663 ◆ always open