I'm sorry for being off-topic. Thanks for your reply!

Yw. Thanks for asking and instigating me to clarify. And thanks for sharing the image which I reused. Next time try to think about which of my recent blogs would be the most similar in topic to the comment you want to raise. I guess this blog is vaguely related because this blog is about corruption and Bitcoin seems to be also a form of corruption if the posited SegWit donations taking comes to fruition. But I think the recent Bitcoin specific blogs would have been more apropos.

Have I understood it correctly?

Nobody knows with 100% certainty what will transpire. My hypothesis is my best, educated guess based on all the information available to me.

I’m hopeful we will be able to at least trade on a DEX some of our legacy BTC after any posited SegWit donations attack for an anonymous altcoin. We might have to wait for a while until the SegWit donations taking winds down so that some block space will be available and transaction fees will hopefully normalize. If at that future time the regulations are too onerous to trade legacy BTC for fiat, then as I said, I am hopeful we will at least be able to trade it on an unregulated DEX for anonymous altcoins. The presumption is that if it will be remain anonymous, the taxes will not be paid on it. I’m envisioning a future chaos in the world wherein there is a black market for anonymous altcoins so that we can purchase dark web goods and services with them, just not mainstream goods and services. My thesis is the world is going to be quite fucked up (c.f. also) anyway 5 to 10 years from now, so people all over the world are going to be using cryptocurrencies in defiance of the governments. Look at the riots in Chile, Hong Kong, Pakistan, Colombia, etc.. The collapse in value of their local currencies due to the coming strong dollar vortex will potentially coax people to look to alternatives to their local pesos, Rupees, etc., which is what I think Libra will really be about.

If we knew a whale we could trust and who trusted us, we could ask them to hodl (i.e. commingle) our BTC on one of their legacy addresses with a huge BTC balance, so they could just issue us some other asset in exchange when ever they do some large transaction (that can pay a high transaction fee) after the posited attack if the mempool is highly congested. But that’s probably not an option available to most of us.

Also who knows maybe there will still be some clever way to trade BTC back to fiat after the posited SegWit attack, if it occurs as hypothesized. Nobody can know for sure how quickly and extensively government regulations and capital controls will proceed.

Yet as I wrote in the BCTalk thread I linked for you, if Bitcoin is ~$50,000 before the May 14, 2020 halving, I am not going to refuse that gift. I will sell some for fiat while the “getting out is good”. In the USA, the capital gains can be reinvested in mining equipment in a section 179 business to avoid all taxes due on the capital gains. Also selling before the fork-off of Core, avoids the posited implicit income taxation.

So I am suggesting to diversify. Sell some, hodl some.

If Bitcoin is less than $20k at the halving, I will probably assume the posited SegWit donations attack is not forthcoming. Keep an eye out on my comments feed for any updates on my thoughts going forward.

I don’t trust Grin’s anonymity (c.f. also). Also I don’t trust Monero’s anonymity nor any extant anonymous altcoin. Better anonymity is likely coming via improvements to Starkware and Zcash. I don’t trust the extant version of Zcash.

The question was how to get coins, which only were on legacy addresses, cuz I thought every btc which was on a segwit address is basically nothing worth (not yet)

But it seems as if you can just send all BTC (unimportant which kinda address) on legacy addresses and you're good to go..?

Assuming the legacy miners do not roll back the chain, which (for economic, competitive, and game theory reasons) I doubt they would attempt to do (or certainly not roll it back months back because it would jeopardize their chances of succeeding to cause Bitcoin Core to fork-off), then the lineage does not matter for the SegWit donations taking attack. Just send the BTC to a legacy address (soon as possible but no rush) and you are safe.

Note lineage does matter if you plan to trade in distant future in regulated markets. Craig Wright is talking about a future where FATF can compel Bitcoin miners to seize or freeze (i.e. censor) transactions with certain tainted lineage. Again I think anonymity is probably the only way forward.