The Polylog Crypto Intelligence Brief

Morning Edition · Tuesday, October 6, 2026

Crypto

US Treasury withdraws the self-custody wallet and crypto-mixer reporting rules it had proposed in 2020 and 2023

The Financial Crimes Enforcement Network (FinCEN) said public comments warned that its broad definition of mixing would discourage lawful activity. The agency also quoted a White House statement backing users' ability to transact privately on a public blockchain.

5 sources
Corroborated

Crypto

Prysm ships a last-minute fix so Ethereum's Sepolia testnet can run the Glamsterdam upgrade at 200 million gas per block

Without version 7.2.1, validators that had not changed their settings by hand would have kept proposing 60 million-gas blocks after today's 13:53:36 UTC fork. That would have weakened the capacity test that will guide mainnet limits.

4 sources

Crypto

Aztec discloses a critical flaw in its Alpha V5 proving system that could let a forged proof pass verification

Contributors found the bug through internal AI-assisted auditing on July 27. They say chain history cannot show whether anyone exploited it. It is the second critical proving-system flaw in consecutive versions of the privacy network.

4 sources

Crypto

The CFTC proposes Regulation CTX and Regulation CAM to bring leveraged retail crypto trading under federal registration

The rules would let US exchanges offer margined and financed crypto to retail customers without waiting for Congress. Chair Michael Selig says the agency cannot force plain spot trading onto registered platforms.

6 sources
Corroborated

Crypto

ZachXBT says he fronted $349,700 to infiltrate a Chinese laundering network that moved more than $1 billion for North Korea's Lazarus Group

The on-chain investigator says the operation identified a cluster holding more than $12 million in funds linked to the Bybit theft. He says it also helped secure a freeze of $442,000 in Tether. He kept the operation unpublished for 18 months.

5 sources
Plausible

Crypto

Security roundup: a token burn drained $201,000 from a CrowdRingCircle pool, and post-mortems detail the unbacked mints at Liquid and Nomic

DeFiHackLabs published reproductions of three exploits on BNB Chain and Optimism, while rekt.news analyzed two Bitcoin-linked systems where a software flaw let attackers create unbacked bitcoin tokens, one of them worth $320 million.

9 sources

Crypto

OKX and ICE file to trade 63 tokenized US stocks around the clock on permissioned Uniswap v4 pools, as Binance opens 1:1 stock conversion

The OKXICE venue would admit only wallets holding a non-transferable identity token on OKX's X Layer network. Binance's bStocks let brokerage clients turn shares into BNB Chain tokens without fees.

4 sources

Crypto

Ethereum Foundation researchers make the case for transaction assertions that revert any transaction whose final outcome breaks a rule the user signed

A separate Ethereum Research paper proposes a way to identify encrypted-mempool committee members who leak or sell decryption shares. That addresses a gap in the leading proposed defense against sandwich attacks.

5 sources

Crypto

Solana Foundation releases an open-source delivery-versus-payment program, built with JPMorgan input, that settles institutional trades in one atomic transaction

The MIT-licensed program has passed external audits and handles real funds. JPMorgan says it advised on deadlines and token extensions but does not endorse or operate the program.

3 sources

Crypto

Miden packages private stablecoins, client-side proving and a self-custodial wallet into what it calls the PriFi stack

Its Bread wallet supports private sends, receives and swaps now, with yield and cross-chain actions promised later. The stack is built around USDCx, a token backed by USDC and issued through Circle's xReserve.

3 sources

Crypto

Rain applies for a US trust bank charter to hold stablecoin reserves as Kraken's parent joins Singapore Gulf Bank's round-the-clock dollar network

Stripe separately plans stablecoin-linked cards in more than 100 countries by year-end. Total stablecoin supply stands at $314 billion, of which Tether accounts for $184 billion.

5 sources
Corroborated

Crypto

Bitcoin slips back to about $85,600 after its third failure at $87,000 since September 23, while the Nasdaq closes higher

Glassnode data show bitcoin futures positioning down $1.4 billion, and spot buyers bought enough to offset selling. The price sits about 32% below the $126,210 peak set exactly a year ago.

5 sources