What does mining software do when two tx are sent in one block with incremented nonces, but the second tx relies on the completion of the first?

Question

If I call approve and transferFrom on an ERC20 token in two transactions, with the nonces being 1 and 2, respectively, how do the miners know which to accept first?

Do the miners choose the ordering of the transactions? If so, does it depend on the nonce or just the gasPrice? If they have the same gasPrice, is it random which one is included first? Does mining software look at the nonce? Can a miner include a t

Looking at Etherdelta, it seems like their interface sends both transactions, approve amd transferFrom in one block with an incremented Nonce. So is this possible?

score 1 · Accepted Answer · answered Dec 21 '18 at 23:05

1

Transactions from a single account are mined in nonce order.

Are Transactions originating from one account mined in nonce order?

Hope it helps.

answered Dec 21 '18 at 23:05

Rob Hitchens

55,151
11
89
145

What does mining software do when two tx are sent in one block with incremented nonces, but the second tx relies on the completion of the first?

1 Answers1