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Tried to reword in a way that makes sense and has an answer
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What's the formula Can it be mathematically proven that determines the validity of a block can be solved?

In other words, that there exists a nonce for the block that will result in sha256(sha256(block header + nonce)) numberhash under the current difficulty barrier number.

What's the formula that determines the validity of a block?

In other words, that exists a sha256(sha256(block header + nonce)) number under difficulty barrier number.

Can it be mathematically proven that a block can be solved?

In other words, that there exists a nonce for the block that will result in sha256(sha256(block header + nonce)) hash under the current difficulty barrier number.

added 9 characters in body
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Nick ODell
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In other words, that exists a sha256(sha256(...nonce...block header + nonce)) number under difficulty barrier number.

In other words, that exists a sha256(sha256(...nonce...)) number under difficulty barrier number.

In other words, that exists a sha256(sha256(block header + nonce)) number under difficulty barrier number.

still not a good question, but improved somehow
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Steven Roose
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what's What's the mathematical equationformula that determines a existencethe validity of a block?

what's the mathematical equation that determines block existence probability? InIn other workswords, that exists a sha256(sha256(...nonce...)) number under difficulty barrier number.

what's the mathematical equation that determines a existence of a block?

what's the mathematical equation that determines block existence probability? In other works, that exists a sha256(sha256(...nonce...)) number under difficulty barrier number.

What's the formula that determines the validity of a block?

In other words, that exists a sha256(sha256(...nonce...)) number under difficulty barrier number.

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