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But, if you want, I can give you my BTC address, and transfer all the fees to me, for transactions below 1sat/vb.

How much power do you have? Enough to get 53k sats?

To solve it, you need to mine a transaction, where DER signature would have less than 53 bytes. Which in practice means grinding around 2^64 hashes, if you have nothing better, than half of the generator, as your r-value.

The current block reward is somewhere around 3.16108918 BTC per 0x170211ac target. Let's count the work per satoshi in a linear way:

Code:

0000000000000000000211ac0000000000000000000000000000000000000000 per 316108918 satoshis
0000000000000000000211ac0000000000000000000000000000000000000000 per 0x12d77076 satoshis
00000000000026fbd82365480000000000000000000000000000000000000000 per 1 satoshi
000000000000000abbac40000000000000000000000000000000000000000000 per 53000 satoshis

Which means, that it is still more profitable, to mine Bitcoin directly, than to solve the next address from my puzzle. However, coins can be added, as demonstrated here: https://mempool.space/tx/8349df0753e80cce322322f1b76789e1d0fd6693aed2f4de4e49576423081ae7 (and the fact of bumping the reward doesn't have to be public; each sponsor can fund a different miner, if needed)

And then, it is all about incentives. Users can send their coins to addresses like that, and then, miners could claim them, by grinding signatures.

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it's worth $220 to keep Bitcoin's blockchain about 1 MB smaller (until another miner includes them anyway)

Of course. Signet blocks now have 1 MB limit, instead of 4 MB. Mainnet mining pools could also produce smaller blocks, if they would want. Which means, that when luke-jr talked about smaller blocks, then he could enforce it in practice, in blocks, produced by his favourite mining pools. Of course, other miners could still make bigger blocks, but still: as long as blocks are not reorged, then if one group of miners is mining less filled blocks than others, then they contibute to the smaller total blockchain size.

By the way: you got 40 sats, where you wanted, good luck sweeping them: https://mempool.space/address/bc1qzeflmklr2l4kdjkx4ak027jcg8jcs3hfne4fqy

I guess you could use the trick with negative fees, to make sweeping it profitable, send that PSBT as an invoice, then receive a signed transaction, with normal fees (paid by someone else), and then share it with miners, if you want to see it cleared. Or wait years, maybe decades, when that amount will be more significant, and when dust limits will be lifted, when miners will stop enforcing them, and Core will decide to lift yet more limits, because of that, just like they lifted OP_RETURN limit.