Blockchain · IP register · CPC G06Q 20 / H04L 9/50

HashClaims

The crypto and blockchain patent beat, read through the claims — custody and MPC, consensus, ZK proofs, and stablecoin settlement. Every entry is built on a specific grant or published application — deep-linked to its canonical patent record — so you can read the claim language yourself.

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Patent Register

24 records indexed

Claims Brief · Lead record

A Newly Published Application Claims a Hub That Bridges Two Blockchains to Swap Digital Currencies

A pending application assigned to Visa is directed to a hub computer that uses smart contracts on two separate blockchain networks to move one digital currency in and a different digital currency out. It is a published application, not a granted patent, classified under the payment-architecture subclass G06Q 20/389.

By Idris Vance · Jun 25, 2026 · Patent record

Claims Brief

A Granted Patent Claims On-Chain Shareholder Voting Built on Tokenized Asset Ownership

A patent issued June 23, 2026 and assigned to Nasdaq, Inc. claims a server-and-blockchain system that records per-owner asset ownership on a distributed ledger, then runs a voting event by distributing voting tokens to each owner's wallet in proportion to the units they hold. It is the third grant in a continuation family, and its independent claims are directed at application logic — here, a vote — executed against on-chain ownership.

By Idris Vance · Jun 23, 2026 · Patent record

Patents & IP

Explainer

Blockchain Prior Art Under 35 U.S.C. 102: Whitepapers, Forum Posts, and the Printed-Publication Problem

Crypto's most foundational disclosures often live in whitepapers, forum threads, and open-source repos — not patents. Here is how 35 U.S.C. 102 treats them as prior art, and what that means for novelty in a blockchain patent.

By Nadia Sorokin · Jun 22, 2026 · GPO (U.S. Code)

Blockchain

Concept Brief

What Is a Multi-Party Computation (MPC) Custody Patent? The Claims Behind Keyless Key Management

MPC custody splits a private key into shares so no single machine ever holds the whole key. Patents on the technique claim the specific way shares are created, used to sign, and replicated — here is what those claims recite.

By Idris Vance · Jun 22, 2026 · Patent record

Blockchain

Concept Brief

What Is a Zero-Knowledge Proof Patent? Reading the Claims Behind On-Chain Privacy

A zero-knowledge proof lets one party prove a statement is true without revealing the underlying data. Patents on the technique claim specific protocol steps — here is what those claims actually recite, grounded in two issued grants.

By Idris Vance · Jun 22, 2026 · Patent record

Blockchain

Reference

What Is CPC Class G06Q 20? The Payment-Protocol Code Behind Crypto and Stablecoin Patents

G06Q 20/00 is the Cooperative Patent Classification group for payment architectures, schemes, and protocols. It is where the commercial layer of crypto patents lives — and pairing it with the cryptography code H04L 9/50 maps the rails of digital money.

By Bianca Oyelaran · Jun 22, 2026 · USPTO

Blockchain

Reference

What Is CPC Class H04L 9/50? The Blockchain-Specific Cryptography Code, Explained

H04L 9/50 is the Cooperative Patent Classification subgroup created in 2022 for cryptographic mechanisms using hash chains, such as blockchains. Here is what the code covers and why it is the anchor symbol for searching distributed-ledger patents.

By Bianca Oyelaran · Jun 22, 2026 · USPTO

Blockchain

Explainer

Are Blockchain Software Patents Eligible Under Alice? What the MPEP Two-Step Actually Asks

Blockchain and crypto methods are software, and software runs into the Alice/Mayo eligibility test under 35 U.S.C. 101. Here is the two-step framework the USPTO applies, in its own words, and how it reaches a distributed-ledger claim.

By Nadia Sorokin · Jun 22, 2026 · USPTO

Blockchain

Research Brief

G-Lox Hides Group-Level Bridge Assignment Behind a Two-Server Privacy Wall

A June 2026 arXiv preprint describes G-Lox, a bridge-distribution system that uses two-server distributed point functions and secure two-party computation so no single server learns group identifiers or group-to-bridge assignments.

By Idris Vance · Jun 18, 2026 · arXiv

Blockchain

Research Brief

bioETH-Beacon Runs Genomic Count Queries On-Chain Over a Fully Homomorphic EVM

A new arXiv preprint describes a smart-contract prototype that answers GA4GH Beacon variant-count queries over encrypted data on a fully homomorphic Ethereum Virtual Machine, releasing results only to a named requester via an on-chain access-control list.

By Idris Vance · Jun 18, 2026 · arXiv

Blockchain

Claims Brief

Claims Brief: A Pending Application for Zero-Knowledge, Decentralized Privacy-Preserving Audit

US20260172254A1, published June 18, 2026 and assigned to PwC Product Sales LLC, claims a decentralized audit run as iterative local epochs that exchange information over a privacy-preserving framework built on a zero-knowledge proof protocol. It is a published application, not a granted patent.

By Idris Vance · Jun 18, 2026 · Patent record

Blockchain

Research Brief

Is Proof-of-Useful-Work 'Paid to Attack'? A New Model Says the Objection Fails

An arXiv paper builds a competitive-equilibrium model of useful-work consensus, finds three regimes, and argues attack cost stays tied to the block reward.

By Bianca Oyelaran · Jun 17, 2026 · arXiv

Blockchain

Research Brief

Anatomy of a Depeg: Tracing USDC Contagion After SVB Through On-Chain Data

An arXiv study reconstructs the 2023 USDC depeg from high-granularity transaction data, finding a bifurcated contagion pathway and wallet-level flight to multi-coin portfolios.

By Bianca Oyelaran · Jun 17, 2026 · arXiv

Blockchain

Research Brief

Proof of Source of Funds: Compliance Without Surveillance, Verified in 1.5ms

An arXiv paper flips crypto compliance from platform-side tracing to user-side zero-knowledge provenance, with O(1) on-chain verification at about 800k gas.

By Idris Vance · Jun 17, 2026 · arXiv

Blockchain

Research Brief

Zero-Knowledge Proofs for the Power Grid: Verifying Energy Trades Without Exposing It

An arXiv paper applies a Groth16-style commit-then-prove pipeline to peer-to-peer energy trading, proving trade guidance is correct without revealing grid-sensitivity data.

By Idris Vance · Jun 17, 2026 · arXiv

Blockchain

Research Brief

VaultxGPU Puts Proof-of-Space Plotting on the GPU to Sidestep Bitcoin's Energy Wall

An arXiv paper offloads Blake3 plotting to CUDA and SYCL kernels, reporting a 59.2x speedup over single-threaded CPU and beating a 384-thread CPU configuration.

By Bianca Oyelaran · Jun 17, 2026 · arXiv

Blockchain

Research Brief

Mapping the Seams: A Five-Category Threat Taxonomy for Blockchain Bridges

With bridge exploits accounting for hundreds of millions in losses, an arXiv paper systematizes interoperability threats into five categories and pairs each with countermeasures.

By Bianca Oyelaran · Jun 17, 2026 · arXiv

Blockchain

Research Brief

Sealed-Bid Auctions That Survive a Hostile Block Proposer

An arXiv paper formalizes four fairness properties on-chain auctions need and builds a Groth16-based protocol that proves a bid in 13ms while hiding it from the proposer until reveal.

By Idris Vance · Jun 17, 2026 · arXiv

Blockchain

Research Brief

NTT or SumCheck? A Hardware-Level Test Finds No Universal ZK-Proof Winner

An arXiv paper runs the first controlled hardware comparison of NTT- and SumCheck-based proving primitives, finding the better choice depends on polynomial degree and SRAM budget.

By Idris Vance · Jun 17, 2026 · arXiv

Blockchain

Research Brief

Coding the Network, Not Just the Data: A New Take on Data Availability Sampling

An arXiv paper argues the under-studied peer-to-peer layer is where Data Availability Sampling bottlenecks, and proposes network coding to route fragments more robustly than Ethereum's current design.

By Bianca Oyelaran · Jun 17, 2026 · arXiv

Blockchain

Research Brief

Fractional Verkle Trees Target Ethereum's Stateless Roadmap at the Implementation Level

An arXiv paper picks apart the reference Verkle implementation, proposes a hypertree decomposition, and claims a 57% heap cut and 4.85 PB/year of network-wide savings.

By Bianca Oyelaran · Jun 17, 2026 · arXiv

Blockchain

Research Brief

Ghost Fills: How Polymarket's Off-Chain Match, On-Chain Settle Gap Got Exploited

A new arXiv study reconstructs nearly two million reverted Polymarket settlements and attributes them to four attack vectors that turn matched orders into ghosts.

By Idris Vance · Jun 17, 2026 · arXiv

Blockchain

Research Brief

Gatling Runs Atomic Broadcast in Parallel to Beat the One-Delay Floor

A June arXiv paper claims to push consensus inter-proposal time below a single network delay by staggering parallel atomic-broadcast instances and merging their logs deterministically.

By Idris Vance · Jun 17, 2026 · arXiv

Blockchain

Grant Watch

Grant Watch: Block Builds a Multi-Grant Estate Around a Blockchain-Agnostic Token Network

US12,211,042 is the latest in a Block lineage that picks a chain for a token at transaction time. The family — four grants, one specification — is the landscape signal, with stablecoin balances quietly threaded through.

By Bianca Oyelaran · Jun 16, 2026 · Patent record

Blockchain