Lefteris Karapetsas

@LefterisJP73k followers

Founder of @rotkiapp🐦, the portfolio tracker that protects your privacy. Berlin. University of Tokyo graduate. Marathon runner. software developer. birding.

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Oct 17

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Posts 73 posts

#	Date	Post	↓ Outlier	Views	Likes	Reposts	Bookmarks
1	Oct 20, '25	AWS is down and then the internet stops working. But the blockchain, it never goe ... wait a minute. Scratch that. This sector is a joke. Everyone preaching decentralization and ce	112×	1.2M	11k	1.3k	1.1k
2	Dec 14, '23	A really serious issue is currently unfolding across most hosted crypto frontends. There is a supply attack on a popular connector, the @Ledger connect-kit. It has been infected wi	72.5×	745k	1.3k	519	127
3	Nov 19, '22	I've only used mastodon for a week. My account just got suspended for: "Being a capitalist" I am not sure what that means. But I guess I can fix it by sending some moneros to the s	56×	0	22k	2.4k	546
4	Jun 13, '23	Do not accept projects "opensource washing" their work. BSL is not opensource and uniswap v4 was released with a BSL license. Therefore uniswap v4 is not #opensource Building in pu	42.4×	436k	697	121	41
5	Nov 30, '22	A man who stole $10B, @SBF_FTX just got interviewed, portrayed almost as a victim and got an applause at the end Still free and fine. Aaron Swartz, who downloaded academic journals	38.5×	0	14k	3.3k	289
6	Jul 30, '23	It was 8 years ago today, we launched #ethereum from a small office in Waldemarstraße 37A in Berlin What a journey its been since then? It became the most widely used cryptocurrenc	30.3×	312k	2.4k	328	109
7	Apr 14, '25	I’m tired. Everything I love about software: craft, care, community is being gutted. AI slop PRs for airdrops. Fake activity to juice metrics for retro funding. DAO politics and go	30.2×	310k	1.8k	180	248
8	May 14, '24	This was handed out for the press TL;DR seems to be: - Tool was used by criminals - Alexey did not do anything to stop it - Tool has no legitimate non criminal use - accuse him of	28.2×	290k	553	95	72
9	Jun 24, '25	Everybody wants more apps, wants crypto to be usable and to reach retail. Yet nobody wants to fund apps.	25.8×	265k	449	35	39
10	Dec 2, '23	Hey @AlchemyPlatform I just realized you guys are in @optimismFND RPGF3 No doubt you made some nice contributions to the community but since you've raised more than half a billion	21.9×	225k	509	56	27
11	May 4, '23	Sad to see Gitcoin focus on such a distorted US-centric view of the world. "reflect the diversity of the community they serve" sounds as arbitrary as rules can go Instead of this,	21.1×	217k	819	62	11
12	Jul 11, '23	@TerribleMaps It makes sense if you learn about it. It's not like the rest where you would say "Its greek to me. "It's railway station to me". It wants to show the feeling of, goin	19.9×	204k	464	14	10
13	Dec 14, '23	✍️Now that the worse is behind us but while everyone's attention is still on the mattter I am writing a bit of a longer post on this industry's architecture and security practises.	18.9×	195k	772	192	199
14	Jul 30, '25	It was this day 10 years ago, 30th of July 2015, that we changed the world forever. We were a small team of hackers in an office in Kreuzberg in Berlin and we had just launched the	18.8×	193k	2k	252	115
15	Jun 11, '24	Finally someone does it right! Thank you @zksync for just simply releasing a CSV of eligible EVM addresses along with their allocation.	15.1×	155k	905	61	258
16	Nov 3, '25	The Balancer v2 hack isn't about lost funds. It’s a trust collapse. A protocol live since 2020, audited and widely used, can still suffer a near-total TVL loss. That’s a red flag f	15.1×	155k	1.1k	82	122
17	Apr 10, '23	MEV Bots have been slaughtering retail users via sandwiching for years. Nobody blacklists them. Someone dare fool a MEV bot and give them a taste of their own medicine and they get	14.6×	150k	497	68	22
18	Jul 30, '21	Six years ago, on 30/07/2015, we launched the #ethereum network from a small office in Waldermarstr. #Berlin. Happy #ethday! Onwards and upwards🚀	14.1×	0	5.5k	894	109
19	Dec 14, '23	ARE YOU GUYS INSANE? Why would you build what should be the most secure-consious library in the world to "load from CDN" for convenience without having users to wait for dapps to u	12.5×	128k	564	60	51
20	Feb 21, '25	This is the biggest blind signing compromise of a multisig to date. @Bybit_Official lost ~$1.5bn by signing a compromised tx on their safe (more details to be determined). But FOR	12.1×	124k	669	87	338
21	Sep 19, '23	@Terraria_Logic @Demilogic @godotengine You guys are amazing. Bravo.	12.1×	124k	365	0	0
22	Apr 14, '25	@atrupar Why does nobody ever challenge that guy? His strategy of just spewing one lie after the other to overwhelm everybody will work so long as nobody challenges him. And if nob	11.7×	120k	824	63	17
23	Jun 20, '24	While I get the intention, @LayerZero_Labs a forced donation is wrong. If you force a donation then it's called a tax. I supported PG willingly in the past. If you want to support	11.4×	117k	471	25	20
24	Jun 26, '23	@wartranslated How is this supposed to decide the fate of Russia? Don't they see how ridiculous they sound when they say big words like this and then go out and say nothing of impo	11.3×	117k	407	7	2
25	May 8, '23	@elonmusk Why would you do that? There is lots of legends who are no longer with us. Their twitter history is something important enough to preserve imo. Perhaps you can keep it so	10.8×	111k	612	30	6
26	Oct 7, '23	It seems that @gitcoin mistakenly sent ~521k $GTC (~$471k) to the token address instead of funding a workstream address That is really sad to see. Effectively burning half a millio	10.4×	107k	377	35	50
27	Jul 30, '24	Many people are asking about who is who in that picture from my phone back on Ethereum's launch day. So here we go with what I remember. Starting from Vitalik and going clockwise.	10.3×	106k	600	93	174
28	Mar 4, '25	Ethereum is a really amazing technology. I have been using it to pay the employees of my company who live out of the EU. (stables) I have been using to to borrow FIAT for my daily	10×	103k	1.1k	161	220
29	Mar 23, '24	@daniel_nguyenx "I got questioned why I did that" I would have fired immediately. Trust is everything.	9.7×	100k	1.5k	4	13
30	May 21, '24	I have some thoughts on the EF researchers conflict of interest. I am really sad and disappointed. Disclosing compensation packages is a must. But that aside, I am appalled that we	9.2×	95k	555	88	91
31	Jul 10, '25	I apologize to my American friends for raining on your parade but a reason BTC has made yet another ATH in $ terms is the devaluation of the dollar. BTC/EUR is still far from its A	9.0×	93k	716	53	53
32	Jan 17, '23	@avsa Wait a minute ... I see what you did there	7.6×	78k	467	2	0
33	Jul 30, '22	⌛️7 years ago on 30/07/2015, we launched #ethereum from an office in #Berlin Waldemarstraße 37A. 🦄What was started by this ragtag band of devs from around the world has now grown	7.1×	0	2.6k	482	75
34	May 14, '24	Privacy is a human right and it is for everyone.	6.9×	71k	499	99	15
35	Aug 21, '23	This is why you should use Linux for crypto.	6.7×	69k	433	51	41
36	Feb 28, '25	Just watched the Oval Office exchange between @ZelenskyyUa, @realDonaldTrump, and @JDVance. I have no idea why this was televised - who thought it was a good idea to broadcast a he	6.1×	63k	837	60	56
37	Jul 31, '23	They ended up returning the funds that got snacked via MEV: Whoever the operator of c0ffeebabe.eth is you are a legend. Good actors like this need recognition in our space. Thank y	6.0×	62k	465	60	14
38	May 15, '25	Coinbase just proved again why centralized data honeypots are a disaster waiting to happen. KYC means handing over your identity to be leaked, sold, or extorted. The combination of	5.9×	61k	1.1k	139	137
39	Oct 20, '24	I really wish that @elonmusk had not taken the "For you" tab and turned it into his personal propaganda machine. I don't follow him, I am not American, I don't care about their ele	5.9×	61k	485	20	16
40	Apr 16, '25	@nicksdjohnson hah .. that's a clever phishing attempt indeed. Thanks for the heads up. Google should indeed really fix this. Didn't you work at google in the past? Perhaps some ol	5.9×	60k	913	6	11
41	Aug 14, '23	Seems like this is a controversial opinion but ... Not all money is good money, and sometimes it absolutely is best to stay poor and not take the money than get in bed with certain	5.9×	60k	442	42	11
42	Mar 28, '24	I don't understand the American justice system. Steal ~10$B and cause people to kill themselves -> 25 years Download academic journals from MIT to share with the world -> 2 c	5.8×	60k	1.2k	232	40
43	Aug 27, '24	What is wrong with you people? Why do you insist on making meaningless re-branding and "upgrades". - @0xPolygon MATIC -> POL - Monerium EURe new contract mirroring old one and brea	5.8×	60k	450	31	58
44	May 3, '23	@ShitpostGate This should have gotten at least a C for effort. Perchance.	5.8×	60k	689	0	3
45	Apr 15, '25	A big chunk of "decentralized" crypto is down right now because AWS sneezed. Let that sink in. If your infra collapses when Amazon has a bad day, maybe it's time to rethink your st	5.7×	58k	733	73	123
46	Oct 20, '25	Then you will say ... but Lefteris you can still run your own node, connect to it and do it all without relying on the cloud. Good. Do you do this? Really? Come on be honest. If yo	5.6×	58k	627	30	26
47	Sep 20, '23	@RealTimeWWII What's even more interesting is he did not know how to swim	5.6×	58k	2k	26	24
48	Nov 22, '22	Our brother @alex_pertsev has been in prison for 103 days. Today a Dutch court, labeling him a flight risk keeps denying him a fair trial and asked to be kept in prison until 2023/	5.2×	0	1.7k	522	31
49	Aug 4, '23	@Ukraine This account is unhinged, lol	4.2×	43k	369	0	1
50	Aug 20, '24	@realGeorgeHotz They said unrealized capital gains tax. Not losses writeoff. The house always wins, George.	3.9×	40k	750	3	7
51	Feb 23, '25	The flood of bots, paid ads, and algorithmic boosts pushing AfD in Germany on this platform is unreal. This isn’t organic—it’s a full-blown, coordinated effort to platform extremis	3.8×	39k	465	35	18
52	May 8, '25	Every time an Ethereum hard fork rolls out smoothly, I’m in awe. So many EIPs, engineering work and yet not even a single hiccup. It’s a testament to the tireless, global effort of	3.8×	39k	1k	128	5
53	Jul 30, '24	It was 9 years ago in a small office in Berlin's Waldermarstr 37a that we launched the Ethereum network. It's been 9 years and oh boy so many things have been achieved in that time	3.6×	37k	850	66	34
54	Jan 18, '25	Trump launched a memecoin on Solana, keeping 80% of the supply and offering just 10% to the public. It’s hard to see this as anything but a pump and dump scheme. Schemes like this	3.1×	32k	609	57	26
55	Nov 30, '22	@SBF_FTX This is the justice system of the modern western world, ladies and gentlemen. Burn it all to the ground.	3.1×	0	1.5k	102	4
56	Apr 20, '23	It seems that @alex_pertsev will finally be able to go home in a week That means that after 259 days of imprisonment without a trial he will be able to sleep in his own bed and see	2.9×	30k	406	72	3
57	Jan 14, '22	So @feeswtf done their airdrop and it went exactly as expected. It's a poorly executed ponzi to take your precious ETH away from you. Let's have a closer look 👇	2.8×	0	749	245	79
58	Aug 14, '22	Question for @LidoFinance, @coinbase, @krakenfx, @stakedus, @BitcoinSuisseAG If regulators ask you to censor at the #ethereum protocol level with your validators will you: A) Compl	2.8×	0	866	148	115
59	Nov 16, '24	@hagaetc Not just Norway. I have suffered greatly and am suffering daily at the hands of the German administration due to having made the mistake of running rotki as a German compa	2.8×	29k	458	25	17
60	Mar 21, '25	Huge news!!! @TornadoCash addresses have been removed from the OFAC sanctions list. A big win for privacy 🔏 💪	2.6×	27k	480	82	27
61	Mar 2, '25	Years of fighting for decentralization, permissionless money, and global finance… all for a U.S. government-run ‘Crypto Reserve’ of handpicked, all-American coins. After all that's	2.5×	26k	418	69	11
62	Nov 19, '22	Does any mastodon expert know how to transfer you account if it gets suspended? I thought the option to move was always there. So with account suspension and data deletion, basical	2.4×	0	1.1k	60	19
63	Nov 19, '22	Oh this is getting better. I can't even move my account to another server. By suspending the account on the server the option to move it does not appear. I am stuck.	2.4×	0	1k	80	23
64	Feb 2, '22	Wormhole bridge is exploited for 80k ETH: Suddenly all ETH in solana is backed by nothing.	2.4×	0	632	150	29
65	Jun 17, '22	This day, six years ago, I was woken up by a phone call from @griffgreen. "Dude wake up, check the chain. The DAO is being drained". I frantically had to wake up, splash water in m	2.3×	0	790	122	90
66	Feb 13, '25	Know the work rules at CT /s	2.3×	24k	632	51	11
67	Jun 24, '22	So far 4 #ethereum DeFi projects experienced a DNS hijack attack. @ConvexFinance @ribbonfinance @DeFiSaver and Allbridge. They are all using @Namecheap and logged into their accoun	2.3×	0	600	170	77
68	Apr 16, '25	@TerribleMaps Took me some time to notice the shape of south America. How the heck can you do this in a map and not do it on purpose?	2.2×	23k	738	1	3
69	Mar 9, '25	Perhaps sending the world to hell while being 'pro-crypto' isn’t so good for crypto after all?	2.2×	23k	461	41	10
70	Aug 8, '22	So the @USTreasury opened up #ethereum's @etherscan, took all addresses they have labeled as @TornadoCash and put them in a sanction list: Source:	2.1×	0	623	133	52
71	May 28, '23	@Reuters I am no fan of Erdogan. But if you notice he is handing it out only to children. As he has done in many other times in the past and is customary in Turkey to give "pocket	2.1×	22k	395	9	2
72	Jun 5, '23	@NarwhalsToasty @oryxspioenkop obligatory polish dictionary	2.1×	21k	519	36	42
73	Dec 28, '23	Make Ethereum cypherpunk again! 🫡	1.9×	20k	387	47	17
74	Jul 30, '20	Happy 5th birthday to #ethereum! I will never forget the day we launched the #ethereum network from the small #EthDev office in Waldermarstr. Some 📸 from that day for the OGs to r	1.9×	0	756	104	7
75	Aug 11, '24	The last woman in the Olympics marathon is still fighting. She is walking it but she wants to finish. Her name is LHAMO Kinzang and she is the only female Athlet from Bhutan. The c	1.9×	19k	504	65	13
76	Nov 12, '22	The bankruptcy of @FTX_Official and @AlamedaResearch ripples far. We have not seen all dominoes fall. For example @solana wrapped assets were custodied by them. That means they are	1.8×	0	615	109	35
77	Oct 27, '21	Welcome to epoch 74240 and Altair, the new #ethereum beacon chain hard fork.	1.7×	0	572	129	2
78	Nov 9, '22	So let me get this straight. With one hand @GaryGensler and the @SECGov spent US tax payer money to crash and punish an honest project like @LBRYcom? While with the other they were	1.5×	0	529	124	11
79	Aug 13, '20	1/X:The way this entire YAM thing unfolded, how it was shilled by many in the #ethereum community, how security was thrown out of the window due to short-term greed has really ange	1.4×	0	429	101	36
80	Sep 29, '21	It's horrifying to read the @deversifi post-mortem on the ~$23m gas fee transaction. The fact that this can happen shows how broken crypto UX and priorities are. - JS library bug a	1.3×	0	392	86	41
81	Sep 15, '22	The #EthereumMerge is here. Pandas are here! Finally after so many years PoS is here. I am not crying ... you are...	1.2×	0	516	70	8
82	Mar 29, '21	Hey @Forbes @ninabambysheva. This is an embarrassment. You can do better. You have a big outreach and are misinforming outsiders to this field. This is about #ethereum, not #bitcoi	1.2×	0	493	60	1
83	Feb 22, '22	The article indicating that Toby Hoenisch, is the DAO hacker is finally out: I was waiting for this for a long time. $ETC -> @ShapeShift_io -> $BTC -> @wasabiwallet coinjo	1.2×	0	398	85	35
84	Nov 19, '22	@Han_Siebo It's not decentralized, it's federated. You choose a server to create an account in. That server has absolute control over your account and your experience.	1.2×	0	552	19	11
85	Nov 19, '22	@CryptoAntonioni yes	1.2×	0	658	1	2
86	Apr 27, '22	Success! More women seem to be getting interested in crypto.	1.2×	0	566	11	4
87	Aug 12, '22	One by one they fall. Shame @AaveAave 🙄 All praise our @trmlabs overlords	1.2×	0	392	66	29
88	May 1, '21	$ETH is at ATH and I got a 24 Gwei transaction mined. AMA	1.2×	0	545	35	4
89	Apr 2, '22	Crypto is not anonymous like cash. When you pay via crypto from an account, if that account is associated with your name what you give is not just a name. It's the entire transacti	1.1×	0	403	65	23
90	Aug 8, '22	Thank you @SecBlinken for deleting the tweet containing false accusations against the developers of #ethereum's @TornadoCash. A public apology for accusing them to be a DPRK-state	1.1×	0	434	78	9
91	Jan 11, '24	@BetterMarkets @SECGov You know what? Jog off you little gremlins, labeling an entire industry of hard working honest people as criminals, gamblers, predators and all that. Fade in	1.1×	11k	457	5	1
92	Oct 26, '23	@WhereisRussia hope that guy is fine. Got balls. 🫡	1.1×	11k	397	1	0
93	Aug 11, '21	People have asked me why don't I write smart contracts anymore and just study/audit them. This is one of the reasons. Know it all "influencers" attacking people after the fact with	1.1×	0	421	30	11
94	Nov 8, '22	So wait ... this guy with one tweet and 3 days of pressure, just dropped FTX's valuation enough to acquire the entire exchange?	1.1×	0	482	29	4
95	Mar 12, '22	Is this real life?	1.0×	0	451	18	10
96	Dec 4, '22	I find what @OpenAI is building interesting. But I do have a serious beef with the name. OpenAI is not open. Started as a non-profit, but once @elonmusk left, and the company becam	1.0×	0	441	33	11
97	Feb 16, '22	I find it quite weird how all of CT was up in arms when it came to inclusion of LGBT people But very few seem to care about exclusion of an entire people. Concensys, POAP, Gitcoin	0.9×	0	383	29	10
98	Nov 30, '22	"Stealing is stealing where you steal data or dollars" said @USAttyOrtiz while pursuing 35yrs prison sentence for Aaron. Accused of overreach, overzealous prosecuting they did not	0.8×	0	362	55	4
99	Jan 6, '22	@mozilla A pity that you guys fall victim to the hysteria and hate on crypto that is seen around lately. Had just started using firefox again to allow for some diversity against ch	0.8×	0	439	3	1
100	Apr 15, '19	@SecCivileFrance Good luck. Do your best, the whole world is praying for you.	0.7×	0	395	9	0

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