
pier
a Swiss smart-contract wallet built on ERC-4337 with social and authenticator recovery.

What is pier?
pier is a self-custodial smart-contract wallet from NBK Labs, based in Zug, Switzerland. Users skip seed phrases, recover access via social or authenticator setup, pay no gas, and send, receive, and hold tokens and NFTs across EVM chains. The same infrastructure powers white-label wallets for businesses.
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Developer resources from Alchemy

What is ERC-4337?
ERC-4337 enables smart contract wallets on Ethereum without requiring any consensus-layer protocol changes.

ERC-1271 signature replay vulnerability
On October 27th 2023, Alchemy discovered a ERC1271 contract signature replay vulnerability that affected a large number of smart contract accounts (SCA), and led to risks when interacting with several applications.

Metropolis makes it easy to deploy smart contracts using Alchemy's account abstraction infrastructure
Learn how Metropolis is leveraging Alchemy's account abstraction infrastructure to redefine smart contract deployment with their new product, Metal.
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App store listings are independently reviewed and written by Alchemy using a combination of inbound submissions, editorial research, public project sources, and third-party directories, including ecosystem data from The Grid under the Open Database License, DefiLlama, DappRadar, Reown, and chain ecosystem pages.

