A $22 bitcoin double spend has been observed in the wild (not an RPF). Oh well, give it up everyone*, it's over.
* ᴱᵛᵉʳʸᵒⁿᵉ ʷʰᵒ ᵗʰᵒᵘᵍʰᵗ ⁱᵗ ʷᵃˢ ᵃ ᵍᵒᵒᵈ ⁱᵈᵉᵃ ᵗᵒ ᵃᶜᶜᵉᵖᵗ ᵃ ᵗˣⁿ ʷⁱᵗʰ ⁿᵒ ᶜᵒⁿᶠⁱʳᵐᵃᵗⁱᵒⁿˢ
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Some accepted a transaction without waiting for it to be accepted by another node. Basically, they’re idiots. They didn’t let the Bitcoin network do it’s thing.
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Ta deveno amanecer con esta noticia.
Geniuses are not constrained to the metaphysics of time 
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Someone mined a bitcoin block that had a transaction in it, but that block was later replaced by another block that had a conflicting transaction in it. So if you relied on that first transaction (delivering some good because you thought you got bitcoin), you could have lost $22.
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Either way this fear is going to spread rather quickly once people start waking up. Maybe I should sell to pick up some cheap coins this afternoon. 
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WHoly $$$hit ...! 
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BitMEX Research
@BitMEXResearch
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[1/2] There was a stale Bitcoin block today, at height 666,833. SlushPool has beaten F2Pool in a race.
It appears as if a small double spend of around 0.00062063 BTC ($21) was detected
forkmonitor.info/stale/btc/6668
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It's really not very bad at all unless you were hoping that you could have a high confidence that a bitcoin transaction could be relied upon in a short period of time. If you're willing to wait 30 minutes to be sure, it's not an issue at all.
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I cant wait until we hear "hey guys we settled. Its all good now." It will be an amazing day for all of us.
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galgitron (don't ask for predictions)
@galgitron
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Yesterday, I had tweeted about the Bitcoin double-spend being an RBF, because I had misread the second tweet by @BitMEXResearch and thought both trans were going to the same address, which was incorrect.. (continued)
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返信先: さん
Hello xrp and another beautiful example of its sheer ability to save even more money for the people, by the people.
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Never trust a coin run by a human being
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For those around in early 2018, just so happens a double spend fud kicked in also.
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I don’t recall that
No it didnt
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David I have found a Chinese xrpl address that trades 1xrp for 100-144 CNY (~15USD) and it is live. How is that possible?:)
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Where lol
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he is following btc ;)
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返信先: さん
So is this more as a result of a "bad actor" for want of a better word than a failure in the tech?
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I don't think we know. It's pretty hard (but not impossible) to do this accidentally. I wonder if there is something (a vending machine perhaps) that accepts low value txns with one confirmation and maybe this was a proof of concept.
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This is literally the only thing you need to read in order to be absolutely PETRIFIED of holding Bitcoin.
Double spend = compromised ledger.
Compromised ledger = unreliable product
Unreliable product = useless in real world use case.
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返信先: さん
Hasn't this type of scenario always been possible / known?
I guess the difference now, is that it has become an actual event?
The counter to this type of event is that the network 'always' takes the longer more trusted chain? Which also seems to be playing out, so all is good?
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A crack in the system, even how small it is, is always a bad thing.
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Down with the pitchforks please...
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BitMEX Research
@BitMEXResearch
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On closer inspection this is likley to be an instance of RBF, where the lower fee transaction won
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Nope, raise them back up.
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Eli Afram
@justicemate
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So it appears an actual Double-Spend has occured on BTC... Not an RBF (replace-by-fee), but an actual double spend.
A mere 22USD... but - this could have been 22million.
All the talk about Double Spending on BSV, &it happened on BTC
forkmonitor.info/stale/btc/6668
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Lol. Ok.
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The future of Bitcoin depends on those who will design its successor. If you are investing substantially in Bitcoin, you should at the very least be thinking about who has the keys to the next kingdom
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Perhaps if it is a tokenized or wrapped asset that is traded on another network will then make it faster and more secure
返信先: さん
Question is when you created Bitcoin why didn’t you put a mechanism in place to avoid this very situation?
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