wtf is ethers-bls-signer?

The ethers-bls-signer project is a TypeScript library that adds BLS signature support to ethers.js, a popular toolkit for interacting with Ethereum and similar blockchains. In plain terms, it lets developers sign transactions and messages using a specific cryptographic method called BLS, which isn't available out of the box in ethers.js. BLS signatures are valued in the blockchain world because they're compact and efficient. When multiple parties need to approve a transaction, BLS lets all their individual signatures combine into one single signature, saving space and reducing verification costs. This matters for networks or applications where many validators or participants need to agree on something. Who would use this? Developers building on chains or Layer 2 networks that require BLS-based account abstraction or aggregation, for example, systems where smart contract wallets use BLS signatures instead of the more common Ethereum signature type. If you're building a wallet, a multi-signature setup, or an app that needs to aggregate many approvals into one, this library bridges your ethers.js code with that requirement. The README doesn't go into further detail on setup, configuration, or usage examples, so you'd need to look at the code or related documentation to understand how to integrate it into a project. As a very early-stage or niche tool (with minimal public activity), it appears to be a focused utility rather than a polished product.