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Comment on Proof of Existence: Storing Hashed Files in the Bitcoin Block Chainparent

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What determines the size_in_bytes value?

In general, let's say a govt agency get assigned an $18.5m budget to break the Bitcoin currency as much possible, what could their plan of attack be, i.e. spend that money in the most efficient way possible? Create a large ring of wallets and send tiny payment around the ring? Create less wallets but send large payments between them?

Tiny payments. A transaction of 5000 bitcoins and a transaction of 0.0001 bitcoins are the same size. The size is based on the number of transaction inputs, and the number of transaction outputs.

Why $18.5m?

That does seem oddly specific.

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