Cryptographic Security Proposal
AmericanFortress Proposes Quantum-Safe Crypto Wallet Scheme: Not Officially Confirmed
According to crypto.news, AmericanFortress has introduced a post-quantum security scheme aimed at protecting Bitcoin, Ethereum, and Solana wallet addresses without requiring users to move funds or rotate keys. The scheme, named ZK-PoSP, utilizes zero-knowledge proofs to authorize transactions and claims to maintain existing wallet addresses. The technical paper was released via the International Association for Cryptologic Research’s ePrint archive. The proposal is not officially confirmed and remains subject to independent review and network-level adoption.
Background and Motivation
Crypto.news reports that AmericanFortress has introduced a new security proposal targeting the anticipated risks posed by quantum computing to blockchain wallet security. The motivation stems from concerns that quantum computers, once sufficiently advanced, could potentially break the cryptographic algorithms currently securing Bitcoin, Ethereum, and Solana wallets. This risk is particularly relevant for addresses whose public keys are exposed on-chain, as quantum algorithms like Shor’s could theoretically derive private keys from these public keys. The proposal aims to address these vulnerabilities before quantum attacks become feasible.
The urgency for post-quantum solutions is underscored by recent institutional moves, such as the formation of the Bitcoin Security Consortium, which has pledged significant funding for quantum security research. AmericanFortress’s scheme is positioned as a response to these industry concerns, offering a method to protect existing wallet infrastructure without requiring disruptive changes like fund migration or key rotation. However, the effectiveness of such schemes remains speculative until quantum computers capable of breaking current cryptography are realized.
Technical Overview of ZK-PoSP
The technical paper released by AmericanFortress details a scheme called Zero-Knowledge Proof of Seed Provenance (ZK-PoSP). This approach leverages zero-knowledge proofs to allow a wallet to demonstrate knowledge of the seed used to derive its address, without revealing the seed itself. The system is designed to operate alongside existing signature mechanisms, such as those based on secp256k1 and Ed25519 curves, which are used by Bitcoin, Ethereum, and Solana respectively. The scheme also supports hierarchical deterministic wallet standards like BIP32 and SLIP-10.
ZK-PoSP replaces conventional transaction authorization with zero-knowledge proofs, aiming to maintain compatibility with existing wallet addresses. According to AmericanFortress, this would enable users to retain their current wallet infrastructure, avoiding the need for new address formats or mass asset transfers. The technical paper was published through the International Association for Cryptologic Research’s ePrint archive, making the details accessible for independent cryptographic review.
Implementation and Cost Considerations
AmericanFortress claims that generating a one-time proof to secure a wallet address costs approximately $0.002 on a 16-core server, and each transaction proof costs about $0.00125. The current implementation reportedly takes around 12 seconds to sign a transaction, with verification times between nine and ten milliseconds. These figures are based on computational tests and do not reflect the performance or costs of a live blockchain integration. The company asserts that the system is already practical for institutional settlement, and expects hardware acceleration and improvements in proving systems to further reduce signing times.
The proofs utilize RISC Zero and do not require a trusted setup, which is considered advantageous for security and transparency. However, integrating ZK-PoSP into blockchain networks would necessitate node-level software upgrades, additional storage, bandwidth, and coordination among wallet providers and users. AmericanFortress plans to license its software development kit to blockchains and other projects, meaning adoption would depend on both commercial terms and independent technical review.
Adoption Challenges and Network Requirements
The adoption of ZK-PoSP is contingent upon blockchain networks implementing node-level upgrades to verify proofs and wallet providers generating the necessary proofs for transactions. Until such upgrades are made and enforced, wallet addresses with public keys already visible on-chain remain exposed to potential quantum attacks. The proposal does not offer protection unless there is broad agreement among developers, miners, node operators, wallet companies, and users to implement the required changes.
AmericanFortress’s approach is positioned as a non-disruptive solution, but its effectiveness depends on the willingness of the blockchain community to coordinate and adopt the scheme. The technical paper notes that post-quantum security is conjectural, as the underlying assumptions have not been tested against a cryptographically relevant quantum computer. No such machine currently exists, so the risk remains theoretical at this stage.
Industry Context and Related Initiatives
The AmericanFortress proposal emerges amid growing institutional interest in post-quantum cryptography. As reported by crypto.news, the Bitcoin Security Consortium, which includes major entities like BlackRock and Coinbase, has pledged $15 million over three years to support quantum security research. The consortium’s focus is on post-quantum cryptography, but it does not control Bitcoin development or endorse specific protocol changes. Each member will independently decide which developers and organizations receive funding.
Ethereum has taken a separate approach, with the Ethereum Foundation forming a dedicated post-quantum team and testing hash-based signatures, zero-knowledge virtual machines, and migration tools. These efforts reflect a broader industry trend toward preparing for quantum threats, but also highlight the challenges of achieving consensus and implementing new security standards across decentralized networks.
Independent Review and Next Steps
The ZK-PoSP proposal, as reported by crypto.news, is at the stage of technical suggestion and requires independent cryptographic review, implementation audits, and sufficient network agreement before deployment. AmericanFortress plans to license its software development kit, but adoption will depend on commercial terms and the results of technical scrutiny. The effectiveness of the scheme remains conjectural, as no cryptographically relevant quantum computer currently exists to test its assumptions.
For users and wallet providers, the immediate recommendation is to monitor developments in post-quantum cryptography and await further validation of the scheme. No action is required until the proposal is officially confirmed and integrated into blockchain networks. The industry’s next steps involve independent review, pilot implementations, and consensus-building among stakeholders to determine whether ZK-PoSP or similar schemes can provide practical quantum-safe protection.
Cexvia conclusion
Reported Proposal for Quantum-Safe Wallets Remains Unconfirmed
The AmericanFortress quantum-safe wallet proposal, as reported by crypto.news, is not officially confirmed and remains a technical suggestion requiring further review, testing, and adoption by blockchain networks. The affected entities are wallet holders and blockchain operators, with no immediate change to wallet security until the scheme is independently validated and implemented.
- Risk meaning
- The proposal addresses the potential risk posed by future quantum computers to current cryptographic systems used in major blockchains. If quantum attacks become feasible, wallet addresses with exposed public keys could be vulnerable. The scheme aims to mitigate this risk without disrupting user operations, but its effectiveness is conjectural and dependent on widespread adoption.
- User action
- Users are advised to monitor developments in post-quantum cryptography and await further validation and adoption of the proposed scheme. No immediate action is required, as the proposal is not officially confirmed and has not been integrated into any blockchain network.
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