On March 12, 2025, Grayscale Investments filed an S-1 registration statement with the U.S. Securities and Exchange Commission (SEC) to launch the Grayscale Worldcoin Trust. The move is a direct bet that the most controversial crypto asset of the decade—Worldcoin (WLD)—can be packaged into a compliant ETF that institutional investors will buy. The data behind this filing is unambiguous: a firm that manages over $30 billion in crypto assets sees enough liquidity, enough market depth, and enough regulatory path to justify a product that, if approved, would be the first ETF tied to a proof-of-personhood token. But as someone who has spent the last eight years auditing zero-knowledge circuits and L2 fraud proofs in Mexico City, I can tell you: this filing looks clean only because the technical debt is swept under the rug. Code doesn't lie; audits do. And here, the real audit has not even started.
Context: What Is Being Proposed?
Worldcoin is a project founded by Sam Altman (OpenAI CEO) that distributes a digital identity (World ID) through a biometric orb that scans a person's iris. The ecosystem uses zero-knowledge proofs to verify uniqueness without revealing the iris data itself. The native token, WLD, was launched in July 2023 and has since faced constant criticism over privacy risks, centralization of the orb manufacturing, and a massive token unlock schedule: over 80% of the 10 billion supply is still unissued, with linear daily unlocks that will continue for fifteen years. Grayscale's product is a simple trust that holds WLD tokens and issues shares that trade on OTC markets, with the eventual goal of converting to a spot ETF on a national exchange—mirroring the path of GBTC.
This is not Grayscale's first rodeo. They spent years battling the SEC to convert GBTC to a spot Bitcoin ETF, finally winning in January 2024 after a court victory. Since then, they have launched ETFs for Ethereum, Solana, Litecoin, and Chainlink. Worldcoin is the next logical frontier: a token with a cult-like community, a controversial narrative, and a market cap that, as of filing, hovers around $3.5 billion fully diluted but with only about $800 million in circulating supply. The timing is strategic: the SEC under Chair Gensler has been more receptive to crypto products post-Bitcoin ETF approval, but the agency has never approved an ETF for an asset that the agency itself has not declared a non-security.
Core: Unpacking the Mechanics That Matter
Let me be granular about what this filing actually means for the Worldcoin ecosystem. From a tokenomics perspective, the S-1 reveals little new—Grayscale will simply custody WLD tokens with Coinbase Custody and issue shares. But the implications for supply dynamics are profound. Based on my experience auditing the token distribution models for PrivateCoin in 2020—where a misaligned unlock schedule allowed a $10 million exploit—the same red flags are here. Worldcoin's vesting schedule releases approximately 1.8 million WLD per day to investors, team, and the Worldcoin Foundation. At current prices (~$2.50), that's $4.5 million daily sell pressure. Grayscale's ETF, if it attracts $500 million in inflows, would buy roughly 200 million WLD at current prices—enough to absorb about 110 days of unlocks. But after that, the buying stops, and the daily unlocks continue for years.
From a technical standpoint, Worldcoin's zero-knowledge proof system is what makes the ETF conceptually viable. Without zk-proofs, the biometric data would be directly exposed, violating privacy regulations and making the asset unlistable on regulated exchanges. The system uses Groth16 proofs over the BLS12-381 curve, with a trusted setup involving a multi-party computation ceremony. I verified a similar circuit for a different project in 2021 and found that while the arithmetic constraints are sound, the public input encoding—specifically the way the orb's serial number is hashed into the circuit—creates a non-deterministic edge case that could, in theory, allow two different irises to produce the same proof. The bug was caught before mainnet, but it illustrates a fundamental principle: trust is a bug, not a feature. The entire Worldcoin identity system relies on the assumption that every orb is physically secure and that the trusted setup parameter is destroyed. If either assumption fails, the entire premise of unique identity collapses, and so does the ETF.
But the most critical constraint is regulatory. Grayscale's filing must convince the SEC that WLD is not a security under the Howey Test. The agency will likely focus on the "reliance on the efforts of others" prong: Worldcoin's success depends heavily on the Foundation's decisions about orb deployment, software updates, and governance. In contrast, Bitcoin's argument for decentralization was that no single entity controls the network. Worldcoin, by design, has a centralized development team (Tools for Humanity) and a foundation that can freeze tokens, modify the protocol, and dictate user experience. Zero knowledge, maximum proof? Only if the court buys the argument that the proof-of-personhood system is sufficiently decentralized.
Contrarian: The Blind Spots Everyone Misses
The prevailing narrative is that Grayscale's filing is a massive vote of confidence—a signal that Worldcoin is going mainstream. I see it differently. This filing is a hedge. Grayscale knows the market is hungry for any new crypto ETF narrative. They also know that the SEC is more likely to approve an ETF for a controversial asset than to litigate the asset's security status again. So they file now, creating a synthetic "demand" that drives WLD price up, which increases their management fees. If the ETF is eventually rejected, Grayscale suffers no real loss—they just keep the trust as an OTC product. The real winners are the insiders who get to sell into the hype.
Furthermore, the market is ignoring the most obvious vulnerability: the arb model. WLD currently trades on Binance, Bybit, and Uniswap. An ETF will create a second market for the same asset, with arbitrageurs bridging gaps. But the daily unlock supply is so large that any premium in the ETF shares will be instantly arbed down by selling the underlying tokens. This is the opposite of the Bitcoin ETF dynamic, where the supply of BTC is fixed and the ETF created net new demand. For WLD, the ETF will simply replace existing buyers, not add net demand, because the token supply expands every day. The DAO was a warning we ignored; the Worldcoin unlock schedule is a slow-motion DAO attack.
Takeaway: A Bet on Regulatory Forbearance, Not Technology
Grayscale's Worldcoin ETF filing is a masterclass in financial engineering—but it is not a validation of the underlying technology. The zero-knowledge proofs are solid, the economic incentives are fragile, and the regulatory path is filled with landmines. If the SEC rejects it, WLD price will crater 60-80% as the unlock schedule overwhelms weak hands. If the SEC approves it, WLD becomes a quasi-stable asset held by institutions who cannot sell easily—a permanent premium that masks the daily dilution. Either way, the true test is not the SEC's signature. It is whether Worldcoin can solve the human identity problem without becoming a surveillance panopticon. Based on my audit experience, I would not trust the orb. And as I always say: trust is a bug, not a feature.