SATURDAY, MAY16
1. QCAP quantum canary, 2. Clarity Act advances, 3. Core v31 mempool, 4. Quip quantum path
From Proto and Bitkey - part of the Bitcoin ecosystem at Block, Inc.
1. quantum
Researchers at the DISCRYPT group have proposed a protocol that would give Bitcoin a built-in early warning system for quantum computing threats. Writing on Delving Bitcoin, authors qatkk and nebula-21 describe the Quantum Canary Address Generation Protocol (QCAP), which creates a taproot address that can only be spent by an attacker who has already broken a weaker elliptic curve called secp192r1. The design relies on a multi-party computation where any number of participants each contribute a secret value, and “the shared secret remains unknown as long as there exists one honest participant.” A zero-knowledge proof technique called DLEQAG cryptographically links the weaker curve to a standard Bitcoin address, so if the canary funds ever move, it provides verifiable on-chain evidence that quantum capability has crossed a meaningful threshold. The protocol stores all participant proofs on IPFS and commits them to the blockchain via OP_RETURN, making the derivation publicly auditable. A proof-of-concept implementation and testnet transaction are already available, though the authors note the project still needs decentralized coordination, community participation, and mainnet deployment to function as a credible signal.
-EDITOR·OP_DAILY2. clarity
The Digital Asset Market Clarity Act advanced out of the U.S. Senate Banking Committee in a 15-9 bipartisan vote, clearing the most significant legislative hurdle the bill has faced since stalling in committee four months ago. As CoinDesk reported, Chairman Tim Scott secured the margin at the last moment by admitting additional amendments that won over two Democratic votes from Senators Ruben Gallego of Arizona and Angela Alsobrooks of Maryland. The legislation would establish a federal framework for digital asset trading by splitting oversight between the SEC and CFTC, with the decentralization threshold determining whether a token falls under securities or commodities law. Scott described the process as “one of the most informative and challenging” of his Senate career. The House passed its version 294-134 last year, meaning the two chambers must now reconcile their versions before the bill can reach President Trump’s desk. Open questions remain on law enforcement provisions and an ethics clause targeting elected officials with crypto holdings. Bitcoin climbed above $81,000 on the news, a market signal that institutional participants have been waiting on regulatory clarity as a condition for deeper engagement.
-EDITOR·OP_DAILY3. mempool
Bitcoin Core v31.0rc4 has entered final testing, bringing the biggest architectural change to Bitcoin’s transaction handling in years alongside a meaningful upgrade to network privacy. The release redesigns how unconfirmed transactions are organized in the mempool, grouping related transactions into clusters capped at 64 transactions or 101 kilobytes, replacing the older topology-limited structure that nodes have used since Bitcoin’s early days. According to the official Bitcoin Core release notes, the new cluster design improves “decision-making when constructing block templates, evicting transactions, relaying transactions, and validating replacement transactions.” Alongside the mempool overhaul, v31 introduces a -privatebroadcast flag that routes transaction announcements exclusively through Tor or I2P, severing the link between a user’s IP address and their on-chain activity in a way previous versions could not guarantee. Chain analysis firms have long exploited the timing of transaction relay to map network identities to addresses, and this closes that gap at the protocol level. The full production release is expected in the second half of 2026, pending review by node operators, miners, and infrastructure providers currently testing the rc4 candidate.
-EDITOR·OP_DAILY4. quip
As Bitcoin developers remain split over BIP-361, a proposal that would freeze an estimated 5.6 million long-dormant coins including roughly 1 million BTC widely believed to belong to Satoshi Nakamoto, Postquant Labs has launched a third path. The company’s Quip.Network deploys post-quantum wallet protection on top of Bitcoin today using Arch Network’s Bitcoin-native smart contract layer, requiring no consensus changes and no soft fork. According to a company statement, the approach uses WOTS+ (Winternitz One-Time Signature) cryptography layered on top of existing signatures, committing quantum-safe keys directly to Bitcoin rather than storing them in external databases. CEO Colton Dillion argues the timeline risk is real: “Developers say any protocol upgrade could take 5-10 years, but with Quip’s approach, we provide similar protection immediately.” The solution narrows the quantum exposure window to as little as two blocks by routing transactions through the Arch layer, too short a period for near-term quantum machines to exploit. With Arch Network co-founder Matt Mudano noting that 34% of all bitcoin currently sits in quantum-vulnerable addresses, the deployment moves protection from a theoretical future agenda item to an available option today.
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