sismo-core/sismo-badges

Health v2 · maintenance only

Adoption not part of the score

15880 stars · 526 forks observed · 2026-08-28

What it is AI-extracted, prompt v1, taxonomy v1, 2026-08-29, confidence not recorded

Sismo Badges is the set of Solidity smart contracts powering the Sismo Badge Minting Protocol on Ethereum. It provides an attestations registry, an abstract Attester contract for issuing attestations (including zero-knowledge proof-based attesters), and a non-transferable ERC1155 Badges contract that renders attestations as soulbound tokens.

Use cases

• mint non-transferable on-chain badges from zero-knowledge proofs
• build a custom attester that issues attestations to users
• record and read attestations in a shared on-chain registry
• verify user requests with ZK proofs before issuing credentials
• create accountbound (soulbound) tokens on Ethereum

When to choose

• you want to issue privacy-preserving, ZK-based attestations or badges on Ethereum
• you need a standard registry/attester architecture for on-chain credentials
• you want non-transferable ERC1155 tokens backed by an attestation registry

When to avoid

• you need transferable tokens or standard NFTs
• you are not building on EVM-compatible chains
• you need an off-chain identity or credentialing system

Facets

library · maturity maintenance

auth security cryptography blockchain security privacy developer-tools zero-knowledge-proofs attestations soulbound-tokens erc1155 identity hardhat decentralized-identity smart-contracts ethereum solidity web3

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markdown · JSON · MCP: product_card(name="sismo-core/sismo-badges")