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Swap to DOT through Chainflip and proxy deposit channels - #1548
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1. Map Chainflip Assethub to Polkadot and its DOT asset (dot.hub) 2. Enable swaps on Polkadot; Chainflip keeps Polkadot destination-only since Asset Hub has no vault swaps 3. Update the features matrix
1. API: proxy broker_request_swap_deposit_address for Asset Hub sources only with our commission 2. Cache the SS58 channel address as a Chainflip deposit id so a transfer to it is tracked as a swap
0xh3rman
marked this pull request as ready for review
October 15, 2026 01:21
1. Encode our commission in the broker request instead of taking it from the client; the API only checks the source is Asset Hub 2. Parse the broker's JSON-RPC reply on DepositChannelResponse and decode hex channel addresses with decode_hex 3. Add DepositChannelRequest::mock on the shared testkit addresses, with a new TEST_POLKADOT_SENDER that mock_polkadot reuses
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Part of #754. Chainflip supports Polkadot through Asset Hub (
dot.hub), but Asset Hub has no vault swaps, so swapping from DOT needs a broker deposit channel. This PR ships the parts that don't change the app's DOT-source behaviour: DOT as a destination, and the API route that opens deposit channels so it can be deployed and tested before the source path lands.Assethubto Polkadot and its DOT asset, and enable swaps on Polkadot; Chainflip keeps Polkadot destination-only for now (live ETH → DOT quote checked)POST /v1/swaps/providers/chainflip/deposit_channelbuildsbroker_request_swap_deposit_addressitself (Asset Hub sources only, our 45 bps commission), so it can't be used to call other broker methods0xhex; the route converts them to SS58 and caches them as Chainflip deposit ids, so a transfer to the channel is tracked as a swap. The test vector is a real channel opened on mainnet (2.55 s through the broker RPC, no opening fee)Tested on mainnet from an iOS simulator build: 0.1 SOL → 8.6407 DOT, Chainflip swap 1919267 (Solana deposit
4oVnrS…wrNyy, Asset Hub payout21839178-2), our broker account credited at 45 bps.Deployment:
swap.chainflip.urlcomes fromSWAP_CHAINFLIP_URL: chainflip_broker_rpc(gemwalletcom/infra#28, merged), which injects the BaaS key.DOT on Polkadot still needs
is_swappable = truein the assets table for the Swap button to show.Next: the DOT source path (quote without a vault swap, transfer to the channel, BaaS status by transaction hash, Polkadot swap fee estimate) is on
hm/chainflip-dot-source, to be opened after a real 4 DOT swap against the deployed route.