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feat: add EVM testnet chains (sepolia, base-sepolia, arbitrum-sepolia, optimism-sepolia, polygon-amoy) #213

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feat: add EVM testnet chains (sepolia, base-sepolia, arbitrum-sepolia, optimism-sepolia, polygon-amoy) #213

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691dd66
feat: add EVM testnet chains (sepolia, base-sepolia, arbitrum-sepolia…
ygd58 Apr 19, 2026
aec312f
fix: cargo fmt and add testnet entries to supported-chains docs
ygd58 Jun 10, 2026
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12 changes: 11 additions & 1 deletion docs/07-supported-chains.md
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Original file line number Diff line number Diff line change
Expand Up @@ -59,6 +59,11 @@ Each network has a canonical chain identifier. Endpoint discovery and transport
| Etherlink | `eip155:42793` |
| Tempo | `eip155:4217` |
| Hyperliquid | `eip155:999` |
| Sepolia | `eip155:11155111` |
| Base Sepolia | `eip155:84532` |
| Arbitrum Sepolia | `eip155:421614` |
| Optimism Sepolia | `eip155:11155420` |
| Polygon Amoy | `eip155:80002` |

### Non-EVM Networks

Expand Down Expand Up @@ -91,7 +96,12 @@ bsc → eip155:56
avalanche → eip155:43114
etherlink → eip155:42793
tempo → eip155:4217
hyperliquid → eip155:999
hyperliquid → eip155:999
sepolia → eip155:11155111
base-sepolia → eip155:84532
arbitrum-sepolia → eip155:421614
optimism-sepolia → eip155:11155420
polygon-amoy → eip155:80002
solana → solana:5eykt4UsFv8P8NJdTREpY1vzqKqZKvdp
bitcoin → bip122:000000000019d6689c085ae165831e93
cosmos → cosmos:cosmoshub-4
Expand Down
72 changes: 72 additions & 0 deletions ows/crates/ows-core/src/chain.rs
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Expand Up @@ -190,6 +190,32 @@ pub const KNOWN_CHAINS: &[Chain] = &[
chain_type: ChainType::Evm,
chain_id: "eip155:999",
},
// EVM testnets
Chain {
name: "sepolia",
chain_type: ChainType::Evm,
chain_id: "eip155:11155111",
},
Chain {
name: "base-sepolia",
chain_type: ChainType::Evm,
chain_id: "eip155:84532",
},
Chain {
name: "arbitrum-sepolia",
chain_type: ChainType::Evm,
chain_id: "eip155:421614",
},
Chain {
name: "optimism-sepolia",
chain_type: ChainType::Evm,
chain_id: "eip155:11155420",
},
Chain {
name: "polygon-amoy",
chain_type: ChainType::Evm,
chain_id: "eip155:80002",
},
];

/// Parse a chain string into a `Chain`. Accepts:
Expand Down Expand Up @@ -628,4 +654,50 @@ mod tests {
assert_eq!(chain.name, "ethereum");
assert_eq!(chain.chain_id, "eip155:1");
}
#[test]
fn parse_base_sepolia_by_name() {
let chain = parse_chain("base-sepolia").unwrap();
assert_eq!(chain.chain_id, "eip155:84532");
assert_eq!(chain.chain_type, ChainType::Evm);
}

#[test]
fn parse_sepolia_by_name() {
let chain = parse_chain("sepolia").unwrap();
assert_eq!(chain.chain_id, "eip155:11155111");
assert_eq!(chain.chain_type, ChainType::Evm);
}

#[test]
fn parse_arbitrum_sepolia_by_name() {
let chain = parse_chain("arbitrum-sepolia").unwrap();
assert_eq!(chain.chain_id, "eip155:421614");
assert_eq!(chain.chain_type, ChainType::Evm);
}

#[test]
fn parse_optimism_sepolia_by_name() {
let chain = parse_chain("optimism-sepolia").unwrap();
assert_eq!(chain.chain_id, "eip155:11155420");
assert_eq!(chain.chain_type, ChainType::Evm);
}

#[test]
fn parse_polygon_amoy_by_name() {
let chain = parse_chain("polygon-amoy").unwrap();
assert_eq!(chain.chain_id, "eip155:80002");
assert_eq!(chain.chain_type, ChainType::Evm);
}

#[test]
fn parse_base_sepolia_by_caip2() {
let chain = parse_chain("eip155:84532").unwrap();
assert_eq!(chain.chain_id, "eip155:84532");
}

#[test]
fn parse_base_sepolia_by_chain_id() {
let chain = parse_chain("84532").unwrap();
assert_eq!(chain.chain_id, "eip155:84532");
}
}
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