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pol

PoL (Proof of Liquidity) is a consensus mechanism designed to validate transactions through the provision of liquidity. Unlike traditional Proof of Work (PoW) or Proof of Stake (PoS), PoL rewards participants with block rewards for providing liquidity. This mechanism is commonly used in decentralized exchanges (DEX) or liquidity pools to incentivize users to provide liquidity, thereby enhancing market efficiency and stability. The advantage of PoL lies in its ability to encourage more liquidity providers to participate, strengthening market depth and trading liquidity.
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Polygon Labs: Bor v2.1.3 released, fixing two DoS security vulnerabilities

Polygon Labs official announcement, Bor v2.1.3 is officially released to the public, previously distributed in private version form to validators and major infrastructure providers. This update fixes two medium-severity denial-of-service vulnerabilities in BlockSTM V2 parallel block execution, both submitted by security researchers through the Immunefi bug bounty program.Unbounded keccak256 cache issue: Attackers can fill hundreds of MiB of cache during the speculative execution phase by constructing specific transactions, leading to node memory exhaustion and delayed block production. The fix is to set a capacity limit on the shared cache. Repeated code hash calculation issue in parallel execution: A single transaction can cause the parallel processor to take about 11 seconds, severely affecting node activity. The fix is to cache code hash results on a per-transaction basis.In addition, this update also includes several internal hardening measures: the transaction pool address filtering adds interception for EIP-7702 SetCode authorization, RPC batch execution pool concurrency limit fixes, consistency fixes for reading balances across self-destruct boundaries in parallel execution, and an automatic cleanup mechanism for pending transactions (default 3 hours). The affected versions are Bor v2.1.1 and v2.1.2. v2.1.3 is a non-hard fork, and nodes can upgrade individually without coordination. No exploitation records of the two vulnerabilities have been found on the mainnet and testnet Amoy.

first_img StarkWare launched OffMarket, allowing Polymarket users to trade privately

According to The Block, Starknet developer StarkWare has officially opened its privacy trading service OffMarket to the public, allowing users to trade on Polymarket without publicly associating their positions with their accounts.The service has been undergoing limited testing since August, operating based on Starknet's zero-knowledge technology and shared privacy pool. Currently, the USDC deposit limit for each account is set at $1,000, and StarkWare has stated that it will adjust this limit based on demand and usage. Orders are still executed on Polymarket, facing the same buyers and sellers and market prices.OffMarket is completely non-custodial, with users' private keys stored in the browser, and funds held in Starknet's open-source privacy pool. Polymarket positions are held in contracts by wallets derived from user signatures. OpenZeppelin completed an audit of the privacy pool contract in June, finding no serious or high-risk issues, and StarkWare completed formal verification the following month. StarkWare co-founder and CEO Eli Ben-Sasson stated that the project stems from his long-term investment in the field of financial privacy and mentioned that OffMarket is bringing zero-knowledge technology to Polymarket.A spokesperson for StarkWare stated that OffMarket still cannot prevent others from identifying traders through transaction size or timing, and the market, prices, and transactions themselves remain public. Transfers of USDC from the shared pool to new wallets can also be seen.
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