Version 4.5.0 of the Wallet Recovery Wizard supports building transactions to recover DOT from your BitGo Hot and Self-Managed Cold wallets.
Below is a list full node RPC endpoints that must be called to broadcast the transaction as there are no suitable explorers available for DOT.
Construct the API request to the full node:
Testnet Request URL: wss://westend-rpc.polkadot.io
Mainnet Request URL: wss://rpc.polkadot.io
Request Body format (find "serializedTx" in your downloaded JSON):
{
"id": 1,
"jsonrpc": "2.0",
"method": "author_submitExtrinsic",
"params": ["serializedTx"]
}If using an API request tool such as Postman, you must ensure that you connect to a WS endpoint instead of an HTTP endpoint.