The following sub with filter is not resulting in an error and no messages are received for newly mined txns:

'{"jsonrpc": "2.0", "id": 1, "method": "eth_subscribe", "params": ["alchemy_minedTransactions", {"addresses": [{"to": "0xb87a436B93fFE9D75c5cFA7bAcFff96430b09868"}], "includeRemoved": false, "hashesOnly": false}]}'

The websocket seems to work fine (receiving messages) for non-filtered subscriptions:

{"jsonrpc":"2.0","id": 2, "method": "eth_subscribe", "params": ["alchemy_minedTransactions"]}

Using wscat -c wss://arb-mainnet.g.alchemy.com/v2/API_KEY to subscribe. API docs

Anyone else seeing this issues or any ideas how to solve? Am I missing something in the filtered sub message or have the docs changed? Thanks for any help.

1 Answer 1


All address chars need to be lowercase:

0xb87a436B93fFE9D75c5cFA7bAcFff96430b09868 should be 0xb87a436b93ffe9d75c5cfa7bacfff96430b09868

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