> For the complete documentation index, see [llms.txt](https://gotts.gitbook.io/docs/llms.txt). Markdown versions of documentation pages are available by appending `.md` to page URLs; this page is available as [Markdown](https://gotts.gitbook.io/docs/prd-shared/chains.md). # Supported Chains > **Last Updated**: 2026-02-17 | **Referenced by**: All PRDs | **Document Type**: REF (informative), except sections tagged (Normative) *** | Chain | Chain ID | Native Currency | Uniswap Versions | UniswapX | ERC-7683 | Explorer | | ---------- | -------- | --------------- | ---------------- | -------- | -------- | ----------------------- | | Ethereum | 1 | ETH | V2, V3, V4 | Yes | Yes | etherscan.io | | Optimism | 10 | ETH | V3 | Yes | Yes | optimistic.etherscan.io | | Polygon | 137 | POL | V3 | Yes | Yes | polygonscan.com | | Arbitrum | 42161 | ETH | V3 | Yes | Yes | arbiscan.io | | Base | 8453 | ETH | V2, V3, V4 | Yes | Yes | basescan.org | | BNB Chain | 56 | BNB | V3 | No | No | bscscan.com | | Avalanche | 43114 | AVAX | V3 | No | No | snowtrace.io | | Celo | 42220 | CELO | V3 | No | No | celoscan.io | | Blast | 81457 | ETH | V3 | No | No | blastscan.io | | Unichain | 130 | ETH | V3, V4 | Yes | Yes | uniscan.xyz | | zkSync Era | 324 | ETH | V3 | No | No | explorer.zksync.io | ## Two-Layer Chain Support Model (Normative) Chain support requires distinguishing between Uniswap's own deployments and this protocol's readiness on each chain. These are independent: * **Layer A — Uniswap V4 Deployed**: Uniswap has deployed V4 contracts on this chain. Source of truth: [Uniswap V4 Deployments](https://docs.uniswap.org/contracts/v4/deployments). * **Layer B — Gotts Vaults Supported**: This protocol's contracts, SDK, monitoring, and audits are ready for this chain. ### Client Display Rules (Normative) | Layer A (V4 deployed) | Layer B (Protocol supported) | Client Behavior | | --------------------- | ---------------------------- | ---------------------------------------------------------------------------------------------------------------------- | | No | N/A | V4-based features MUST be disabled. Show V3-only tool surface. | | Yes | No | V4-based features MUST be marked "Not supported by this protocol yet." Deposit/withdraw via V3 paths remain available. | | Yes | Yes | Full feature set enabled. | ### Current Layer A/B Status | Chain | Layer A (V4 Deployed) | Layer B (Protocol Supported) | | ---------- | --------------------- | ---------------------------- | | Ethereum | Yes | Yes (v1 target) | | Unichain | Yes | Yes (v1 target) | | Base | Yes | Yes (v1 target) | | All others | No | No (MCP core tools only) | ### Address Mapping Sourcing (Normative) Address mappings for Uniswap contracts MUST be sourced from the [Uniswap V4 Deployments](https://docs.uniswap.org/contracts/v4/deployments) page and pinned by commit hash in the repository configuration file (`packages/safe/src/constants/`). Integrators MUST NOT assume identical deployments across chains. On every deployment or release: 1. The build pipeline MUST verify that pinned addresses match the latest Uniswap Deployments page 2. Any address mismatch MUST fail the build and require explicit acknowledgment 3. New chain support MUST include address verification as part of the deployment checklist ## Chain Capabilities (Normative) Every feature in this PRD MUST declare which chains support it. Clients MUST read `ChainCapabilities` and dynamically enable/disable UI and tool paths. Features unavailable on the selected chain MUST be disabled with an explanatory message, never silently omitted. > **Canonical source for Uniswap contract addresses per chain**: [Uniswap Deployments](https://docs.uniswap.org/contracts/v4/deployments). Integrators MUST NOT assume identical deployments across chains. ### Feature Matrix | Feature | Capability Key | Required Contracts/Data | Chains Available | Fallback Behavior | | ------------------------------ | ----------------- | -------------------------------------- | ----------------------------------------------------- | -------------------------------------------------- | | V4 share pools (hook market) | `v4SharePools` | V4 PoolManager + VaultHook deployment | Ethereum, Base, Unichain | Disable share market; deposit/withdraw only | | Gas sponsorship | `paymaster` | Paymaster endpoint + AA bundle support | Base (ERC-7677 paymaster) | User-paid gas path | | V3 Subgraph analytics | `subgraphV3` | Deployed subgraph endpoint | All 11 chains | Degrade to RPC-only reads or hide analytics panels | | V4 Subgraph analytics | `subgraphV4` | Deployed subgraph endpoint | Ethereum, Base, Unichain (others TBD) | Degrade to RPC-only or hide V4-specific analytics | | Async redemption (ERC-7540) | `erc7540` | Vault supports request/claim lifecycle | Deferred (no chain for v1) | Use synchronous withdraw only | | UniswapX order routing | `uniswapX` | UniswapX deployment + filler network | Ethereum, Optimism, Polygon, Arbitrum, Base, Unichain | Use on-chain swap via Universal Router | | Cross-chain intents (ERC-7683) | `erc7683` | ERC-7683 filler network | Ethereum, Optimism, Polygon, Arbitrum, Base, Unichain | Single-chain operation only | | ERC-8004 identity registration | `erc8004Registry` | Identity Registry deployment | Ethereum (L1), readable on all L2s | Cannot onboard without L1 registration | ### Per-Chain Summary | Chain | v4SharePools | paymaster | subgraphV3 | subgraphV4 | uniswapX | erc7683 | erc8004Registry | | ---------- | ------------ | --------- | ---------- | ---------- | -------- | ------- | --------------- | | Ethereum | Yes | No | Yes | Yes | Yes | Yes | Yes (primary) | | Optimism | No | No | Yes | No | Yes | Yes | Read-only | | Polygon | No | No | Yes | No | Yes | Yes | Read-only | | Arbitrum | No | No | Yes | No | Yes | Yes | Read-only | | Base | Yes | Yes | Yes | Yes | Yes | Yes | Read-only | | BNB Chain | No | No | Yes | No | No | No | Read-only | | Avalanche | No | No | Yes | No | No | No | Read-only | | Celo | No | No | Yes | No | No | No | Read-only | | Blast | No | No | Yes | No | No | No | Read-only | | Unichain | Yes | No | Yes | TBD | Yes | Yes | Read-only | | zkSync Era | No | No | Yes | No | No | No | Read-only | > **Note**: "TBD" entries indicate the infrastructure is expected but not yet confirmed. Clients MUST treat TBD as `false` and degrade gracefully. *** ## Key Contracts (Mainnet) | Contract | Address | | -------------- | -------------------------------------------- | | TokenJar | `0xf38521f130fcCF29dB1961597bc5d2B60F995f85` | | Firepit | `0x0D5Cd355e2aBEB8fb1552F56c965B867346d6721` | | UNI Token | `0x1f9840a85d5aF5bf1D1762F925BDADdC4201F984` | | V4 PoolManager | `0x000000000004444c5dc75cB358380D2e3dE08A90` |