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eth_subscribe RPC Method

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Updated on
Feb 23, 2026

eth_subscribe RPC Method

Parameters

subscription type
string
REQUIRED
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newFlashblockTransactions
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pendingLogs
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newFlashblocks
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options
object
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address
string
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topics
array
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Returns

result
string
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Request
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wscat -c wss://docs-demo.base-mainnet.quiknode.pro/ \
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# wait for connection
3
{"id":1,"jsonrpc":"2.0","method":"eth_subscribe","params":["newFlashblocks"]}
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wscat -c wss://docs-demo.base-mainnet.quiknode.pro/ \
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# wait for connection
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{"id":1,"jsonrpc":"2.0","method":"eth_subscribe","params":["newFlashblocks"]}
Response
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{
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"id": 1,
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"jsonrpc": "2.0",
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"result": "0x1887ec8b9589ccad00000000000532da"
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}
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{
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"id": 1,
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"jsonrpc": "2.0",
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"result": "0x1887ec8b9589ccad00000000000532da"
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}
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