[{"data":1,"prerenderedAt":816},["ShallowReactive",2],{"project-17173051":3},{"id":4,"name":5,"line":6,"line_source":7,"title":8,"url":9,"domain":10,"maker":11,"posted_at":12,"year":13,"points":14,"comments":15,"rank_in_year":16,"shown_in_year":17,"top":18,"tier":19,"category":20,"subcategory":21,"format":22,"keywords":23,"reception":29,"sentiment":30,"stance_mix":31,"scored_comments":35,"aspects":36,"strip":47,"post_text":51,"what":52,"said":67,"maker_in_thread":170,"shape":180,"grid":184,"attempts":777,"same_week":778,"maker_shows":49,"maker_hidden":808,"reader_version":809,"card":810},"17173051","Crypto51","Cost of a 51% Attack on Popular Cryptocurrencies","title","Show HN: Cost of a 51% Attack on Popular Cryptocurrencies","https:\u002F\u002Fwww.crypto51.app","crypto51.app","xur17",1527522650,2018,581,218,23,2155,2,"legend","finance_crypto","cryptocurrency security analysis","web_app",[24,25,26,27,28],"51% attack","proof of work","cryptocurrency security","nicehash","hashing power","curious",-0.219,{"positive":32,"neutral":33,"mixed":18,"critical":34},12,43,29,86,{"execution":37,"idea":40,"privacy":42,"design":44,"performance":45,"docs":46},{"positive":38,"critical":39},1,9,{"positive":39,"critical":41},18,{"positive":43,"critical":38},0,{"positive":38,"critical":43},{"positive":43,"critical":38},{"positive":38,"critical":43},[48,49,38,49,49,43,43,49,38,49,50,43,38,43,38,18,38,38,43,43,18,18,49,18,50,18,43,38,50,18,38,49,49,38,43,18,18,50,50,38],5,3,4,null,{"problem":53,"audience":51,"pricing":51,"motivation":60,"time_to_build":51,"stack":64,"openness":65,"stage":66,"team_size":65},{"value":54,"source":55,"evidence":56},"Shows how cheaply a 51% attack could be carried out against cryptocurrencies","maker",[57],{"id":58,"by":11,"text":59},"17173075","After the multimillion dollar Bitcoin Gold 51% attack a few weeks ago, I was curious what an attack like this costs against other currencies. I calculated the cost of renting…",{"value":61,"source":55,"evidence":62},"Curious what an attack costs against other currencies after the Bitcoin Gold 51% attack",[63],{"id":58,"by":11,"text":59},[],"unknown","launched",{"praise":68,"objections":85,"requests":119,"questions":140,"alternatives":155},[69],{"value":70,"source":71,"evidence":72},"Useful and interesting data presentation","commenter",[73,77,81],{"id":74,"by":75,"text":76},"17173194","fru2013","Looks great, nice work, keep it up! One small improvement in my opinion would be to make the columns sortable- especially the 1hr attack cost.",{"id":78,"by":79,"text":80},"17173830","_31","Very interesting data. Are you planning on making it available via an API?",{"id":82,"by":83,"text":84},"17173663","ttul","Loaded into a live-updating Google Sheet for convenience: https:\u002F\u002Fdocs.google.com\u002Fspreadsheets\u002Fd\u002F18tqvZPXjnEVExlSaTcGu5kilasQ4N1i0ekx0zmSwSiI\u002Fedit?usp=sharing",[86,97,108],{"value":87,"source":71,"evidence":88},"Estimates ignore the cost of buying hardware and rising rental prices, so attacks on large coins are unrealistic",[89,93],{"id":90,"by":91,"text":92},"17173257","HaseebQ","This is a totally misleading calculation for the largest currencies. It's literally quoting the spot price for what's available on NiceHash and then dividing by the fraction…",{"id":94,"by":95,"text":96},"17173547","Meekro","Doing a 51% attack on a major coin, and actually profiting from it, is much more complicated than this chart implies. Here are some of the problems you'll run into: 1. NiceHash…",{"value":98,"source":71,"evidence":99},"Block rewards are excluded, so attack costs are overstated",[100,104],{"id":101,"by":102,"text":103},"17173373","pietroglyph","It's important to note that this doesn't include block rewards, so these attacks are all actually less expensive than shown.",{"id":105,"by":106,"text":107},"17173187","osrec","It would be interesting to add the currency rewards the attackers would gain from the hashing process. I bet the cost may be greatly reduced, and may even make the operation…",{"value":109,"source":71,"evidence":110},"Some coin entries are wrong, such as Peercoin and Komodo",[111,115],{"id":112,"by":113,"text":114},"17173540","hoschicz","This is incredible! What actually stops me from launching such an attack on something like Einsteinium? One problem I found w\u002F the website: you have included Peercoin, even…",{"id":116,"by":117,"text":118},"17173871","bazza451","One coin I've seen is wrong is Komodo. It uses DPoW which is a completely different type of security scheme https:\u002F\u002Fwiki.komodoplatform.com\u002Fwiki\u002FDelayed_Proof_of_Work_(dPoW) even…",[120,125,129],{"value":121,"source":71,"evidence":122},"Add a JSON API or endpoint",[123,124],{"id":78,"by":79,"text":80},{"id":82,"by":83,"text":84},{"value":126,"source":71,"evidence":127},"Make table columns sortable",[128],{"id":74,"by":75,"text":76},{"value":130,"source":71,"evidence":131},"Add more coins such as Decred and Cardano",[132,136],{"id":133,"by":134,"text":135},"17173557","lucasp","You should add Decred to the list. It would be nice for people to see the increased cost of a 51% attack for a hybrid PoW\u002FPoS coin.",{"id":137,"by":138,"text":139},"17175428","cies","I'm curious were Cardano ADA would be on this list. It seems to be one of the more thoughtful designs, and also a recent addition to the list of coins.",[141,148],{"value":142,"source":71,"evidence":143},"Can NiceHash be used to run custom mining software for double spends",[144],{"id":145,"by":146,"text":147},"17175571","nreilly","Does nicehash let you run custom mining software to make adjustments to how it handles your transactions (permit double spend) or change the algorithm (like the verge attack)?…",{"value":149,"source":71,"evidence":150},"Does attack cost rise linearly with time",[151],{"id":152,"by":153,"text":154},"17173926","andr3w321","Does the cost of a 51% attack rise linearly with time? Is this right? Cost of 24h attack == 24 * (Cost of 1h attack)",[156,163],{"value":157,"source":71,"evidence":158},"coinmarketattack.com",[159],{"id":160,"by":161,"text":162},"17174511","xer","Wow nice works. I was working on the exact same project https:\u002F\u002Fwww.coinmarketattack.com\u002F",{"value":164,"source":71,"evidence":165},"arewedecentralizedyet.com",[166],{"id":167,"by":168,"text":169},"17174522","ummjackson","Hey @xur17, I run arewedecentralizedyet.com - we should partner on adding this metric. Really great work!!",{"comments":171,"answered":39,"key":172},20,[173,174,177],{"id":58,"text":59},{"id":175,"text":176},"17173235","Yes, that is correct. If it is > 100%, there is enough hashing power available to complete the attack, but you could be outbid during the attack. NiceHash has the concept of…",{"id":178,"text":179},"17173381","> Consider all coins using the same function to be the same family and the one with the most work and power to be the most valid. So there are sha256 coins, scrypt coins,…",{"commenters":181,"max_depth":182,"maker_replies":171,"first_comment_mins":50,"lifespan_hours":183},134,8,281,[185,187,191,192,196,200,203,204,208,212,215,218,222,224,227,230,233,236,239,241,244,247,250,252,255,257,259,262,265,268,271,274,277,279,282,284,287,290,293,297,299,302,305,308,311,313,316,319,322,325,328,330,333,336,339,342,345,348,350,353,356,359,362,365,368,371,374,375,378,382,385,388,390,392,395,397,399,402,405,408,411,414,417,420,423,425,428,429,432,435,437,439,441,443,446,449,452,455,457,460,462,465,467,469,472,474,477,479,482,485,487,490,492,495,497,500,503,506,508,511,513,515,517,520,523,527,529,532,535,538,540,542,545,549,551,554,557,561,563,567,570,574,576,578,580,583,585,588,591,593,595,599,601,604,606,609,612,614,617,620,623,625,629,632,634,636,639,641,644,646,648,650,652,655,658,660,662,664,667,670,672,674,676,679,681,685,688,691,693,696,698,700,702,705,707,711,714,717,721,725,728,732,734,736,740,742,745,747,749,752,756,758,761,764,766,768,770,773],[58,43,43,186,11,38],"project\u002Fneutral\u002Fidea",[188,43,49,189,190,43],"17173198","project\u002Fneutral\u002Fexecution","nulagrithom",[175,43,43,189,11,38],[193,43,48,194,195,43],"17173202","project\u002Fpositive\u002Fidea","ninjakeyboard",[197,43,43,198,199,43],"17175248","other\u002Fneutral\u002Fnone","kirillseva",[201,43,48,194,202,43],"17173223","erentz",[178,43,43,194,11,38],[205,43,43,206,207,43],"17174592","other\u002Fneutral\u002Fidea","saalweachter",[209,43,38,210,211,43],"17173902","project\u002Fcritical\u002Fidea","mrb",[213,43,49,186,214,43],"17175232","VectorLock",[216,43,43,198,217,43],"17178182","Natanael_L",[219,43,43,220,221,43],"17178722","commenter\u002Fneutral\u002Fnone","VikingCoder",[223,43,43,198,217,43],"17179970",[225,43,49,186,226,43],"17173985","ghayes",[228,43,38,210,229,43],"17174136","krab",[231,43,43,220,232,43],"17175356","theraccoonbear",[234,43,43,220,235,43],"17176197","elyobo",[237,43,43,220,238,43],"17176906","RobLach",[240,43,43,220,229,43],"17214456",[242,43,49,243,217,43],"17178197","project\u002Fneutral\u002Fnone",[245,43,49,243,246,43],"17180293","rburhum",[248,43,49,186,249,43],"17173311","paulgb",[251,43,43,189,11,38],"17173344",[253,43,49,186,254,43],"17174088","wpietri",[256,43,43,206,217,43],"17178209",[258,43,43,206,254,43],"17183206",[260,43,43,198,261,43],"17174119","thebigspacefuck",[263,43,43,198,264,43],"17175012","nmjohn",[266,43,43,198,267,43],"17175172","hackerman12345",[269,43,43,198,270,43],"17175187","Improvotter",[272,43,43,198,273,43],"17175518","glandium",[275,43,43,198,276,43],"17175600","MereInterest",[278,43,43,198,238,43],"17176157",[280,43,43,198,281,43],"17178117","detaro",[283,43,43,198,238,43],"17176153",[285,43,43,198,286,43],"17178057","lagadu",[288,43,43,220,289,43],"17178111","lawlessone",[291,43,43,198,292,43],"17175063","lolc",[294,43,38,295,296,43],"17174718","project\u002Fcritical\u002Fexecution","arisAlexis",[298,43,43,189,11,38],"17174832",[300,43,48,194,301,43],"17175443","daveguy",[303,43,43,198,304,43],"17176817","plankers",[306,43,43,220,307,43],"17177743","askmike",[309,43,43,220,310,43],"17178172","jpadkins",[312,43,43,220,307,43],"17178416",[314,43,49,186,315,43],"17174936","piracy1",[317,43,38,318,214,43],"17175227","project\u002Fcritical\u002Fprivacy",[320,43,43,206,321,43],"17175392","jayd16",[323,43,43,198,324,43],"17177386","sushibowl",[326,43,49,186,327,43],"17175420","Alex3917",[329,43,43,220,11,38],"17175441",[331,43,43,198,332,43],"17175684","asynchrony",[334,43,43,220,335,43],"17175912","phlip9",[337,43,49,186,338,43],"17176200","edouard-harris",[340,43,48,194,341,43],"17177505","SwingingShips",[343,43,49,186,344,43],"17178012","rdslw",[346,43,49,189,347,43],"17179379","WhiteOwlLion",[349,38,43,206,211,43],"17173774",[351,38,43,206,352,43],"17174109","fanzhang",[354,38,43,220,355,43],"17174180","gruez",[357,38,43,358,352,43],"17174406","commenter\u002Fneutral\u002Fidea",[360,38,43,358,361,43],"17174624","tfha",[363,38,43,358,364,43],"17174703","loser777",[366,38,43,358,367,43],"17175380","tripletao",[369,38,43,358,370,43],"17175422","stale2002",[372,38,43,206,373,43],"17178441","jacobush",[90,18,38,295,91,43],[376,18,43,377,11,38],"17173265","maker\u002Fneutral\u002Fidea",[379,18,49,380,381,43],"17174167","project\u002Fneutral\u002Fdesign","contravariant",[383,18,38,210,384,43],"17175633","guy_c",[386,18,43,206,387,43],"17176205","Iv",[389,18,43,377,11,38],"17176243",[391,18,43,206,387,43],"17177270",[393,18,43,394,307,43],"17177757","other\u002Fcritical\u002Fidea",[396,18,43,198,387,43],"17184219",[398,18,43,358,307,43],"17186098",[400,18,38,210,401,43],"17177709","swift532",[403,18,43,404,387,43],"17186361","other\u002Fneutral\u002Fprivacy",[406,18,38,295,407,43],"17173374","Sir_Substance",[409,18,38,295,410,43],"17173386","Passthepeas",[412,18,43,413,11,38],"17173435","maker\u002Fneutral\u002Fexecution",[415,18,49,189,416,43],"17173482","thisisit",[418,18,49,189,419,43],"17173403","pjc50",[421,18,49,422,352,43],"17173524","project\u002Fmixed\u002Fexecution",[424,18,43,377,11,38],"17173580",[426,18,43,198,427,43],"17175437","acchow",[94,49,38,210,95,43],[430,49,38,210,431,43],"17173619","machinesmachine",[433,49,43,358,434,43],"17173647","JumpCrisscross",[436,49,43,358,95,43],"17173696",[438,49,43,358,434,43],"17173831",[440,49,43,220,296,43],"17174734",[442,49,43,220,370,43],"17175431",[444,49,43,220,445,43],"17175754","wafflebear",[447,49,43,358,448,43],"17178173","chatmasta",[450,49,38,210,451,43],"17173783","auganov",[453,49,43,220,454,43],"17174162","mrep",[456,49,38,210,451,43],"17174694",[458,49,43,206,459,43],"17173787","btown",[461,49,43,198,254,43],"17174137",[463,49,43,198,464,43],"17175616","Jommi",[466,49,43,220,254,43],"17176410",[468,49,43,220,464,43],"17272187",[470,49,43,198,471,43],"17177891","michaelt",[473,49,43,198,254,43],"17179318",[475,49,43,198,476,43],"17228443","SZJX",[478,49,43,198,476,43],"17228433",[480,49,43,198,481,43],"17175467","profalseidol",[483,49,43,206,484,43],"17174648","SilasX",[486,50,38,210,352,43],"17174061",[488,50,49,186,489,43],"17174145","AlexCoventry",[491,50,43,198,381,43],"17174181",[493,50,49,186,494,43],"17174496","ex_ex_nihilo",[496,50,43,220,489,43],"17174569",[498,50,43,220,499,43],"17175765","pishpash",[501,48,49,186,502,43],"17173469","jakecraige",[504,48,49,186,505,43],"17173519","gizmo686",[507,48,38,210,502,43],"17173644",[509,48,43,220,510,43],"17173805","Canada",[512,48,43,220,502,43],"17174044",[112,514,49,422,113,43],6,[516,514,43,413,11,38],"17173694",[518,514,48,194,519,43],"17173773","tristanho",[521,514,49,186,522,43],"17178208","aiCeivi9",[524,525,38,210,526,43],"17175146",7,"cameldrv",[528,525,43,206,384,43],"17175679",[530,182,38,295,531,43],"17173529","loader",[533,182,49,186,534,43],"17175060","marcosdumay",[536,182,43,358,537,43],"17175653","Zpalmtree",[539,182,49,186,534,43],"17182356",[541,182,49,186,494,43],"17175522",[543,182,49,186,544,43],"17179727","slivym",[546,39,49,547,548,43],"17173231","project\u002Fneutral\u002Fperformance","koolba",[550,39,49,189,384,43],"17175257",[552,39,43,220,553,43],"17178726","vivab0rg",[74,555,48,556,75,43],10,"maker\u002Fpositive\u002Fdesign",[558,559,38,210,560,43],"17173440",11,"maxander",[562,559,43,413,11,38],"17173458",[564,32,38,565,566,43],"17174981","project\u002Fcritical\u002Fperformance","qeternity",[160,568,48,569,161,43],13,"maker\u002Fpositive\u002Fidea",[571,572,49,189,573,43],"17173350",14,"std_throwaway",[575,572,43,413,11,38],"17173428",[577,572,43,220,573,43],"17173948",[579,572,43,220,249,43],"17174211",[581,572,43,220,582,43],"17174743","direction534",[584,572,43,220,573,43],"17174920",[586,572,43,220,587,43],"17175094","im3w1l",[589,572,43,220,590,43],"17174232","CryptoPunk",[592,572,43,220,573,43],"17174905",[137,594,49,243,138,43],15,[596,594,43,597,598,43],"17176162","other\u002Fpositive\u002Fdesign","mythrwy",[116,600,38,295,117,43],16,[602,603,38,210,301,43],"17175430",17,[82,41,48,605,83,43],"project\u002Fpositive\u002Fdocs",[607,41,43,608,11,38],"17173677","maker\u002Fneutral\u002Fdocs",[610,41,49,611,489,43],"17174208","maker\u002Fneutral\u002Fdesign",[167,613,48,569,168,43],19,[615,613,43,616,11,38],"17174850","maker\u002Fneutral\u002Fnone",[618,171,38,210,619,43],"17173759","nickpsecurity",[621,171,43,220,622,43],"17176691","quickthrower2",[145,624,49,189,146,43],21,[626,627,49,186,628,43],"17173395",22,"lixtra",[630,627,43,220,631,43],"17173445","amenod",[633,627,43,220,628,43],"17173470",[635,627,43,220,454,43],"17174222",[637,16,38,295,638,43],"17173405","pieguy",[640,16,43,413,11,38],"17173418",[642,16,49,189,643,43],"17173673","abecedarius",[105,645,49,186,106,43],24,[647,645,43,220,195,43],"17173206",[649,645,43,377,11,38],"17173207",[651,645,49,186,106,43],"17173264",[653,645,43,198,654,43],"17173219","sjburt",[656,645,43,198,657,43],"17173355","howdydoo",[659,645,43,198,113,43],"17173691",[661,645,43,198,292,43],"17175158",[663,645,43,220,370,43],"17175584",[665,645,43,198,666,43],"17174037","CodesInChaos",[668,645,49,186,669,43],"17173284","astrodust",[671,645,43,220,505,43],"17173372",[673,645,43,220,669,43],"17174212",[675,645,43,220,505,43],"17174583",[677,645,43,220,678,43],"17175040","yifanl",[680,645,43,198,669,43],"17181540",[682,683,38,210,684,43],"17173378",25,"mike-cardwell",[686,683,43,220,687,43],"17173504","jldugger",[689,683,43,220,690,43],"17173526","GW150914",[692,683,43,220,687,43],"17173800",[694,683,43,220,695,43],"17173965","empath75",[697,683,43,220,370,43],"17175576",[699,683,43,220,695,43],"17178220",[701,683,43,377,11,38],"17173548",[703,704,49,186,195,43],"17173838",26,[101,706,38,295,102,43],27,[708,709,49,186,710,43],"17177887",28,"captainbland",[712,709,43,220,713,43],"17179195","lima",[715,34,43,198,716,43],"17175099","whatsstolat",[718,719,49,186,720,43],"17175512",30,"127",[722,723,43,198,724,43],"17174038",31,"duxup",[726,727,38,295,598,43],"17176114",32,[729,730,49,186,731,43],"17177028",33,"angel_j",[133,733,49,186,134,43],34,[152,735,49,186,153,43],35,[737,738,49,186,739,43],"17174679",36,"timvdalen",[741,738,43,220,296,43],"17174740",[78,743,48,744,79,43],37,"project\u002Fpositive\u002Fexecution",[746,743,43,413,11,38],"17174051",[748,743,48,194,79,43],"17174186",[750,751,48,194,416,43],"17173535",38,[753,754,49,186,755,43],"17173362",39,"product50",[757,754,43,377,11,38],"17173402",[759,754,38,210,760,43],"17173622","makomk",[762,754,43,220,763,43],"17173662","sorokod",[765,754,43,220,760,43],"17173714",[767,754,43,220,763,43],"17173778",[769,754,43,220,489,43],"17174192",[771,772,38,210,296,43],"17174769",40,[774,775,38,210,776,43],"17173875",41,"DSingularity",[],[779,784,789,794,799,803],{"id":780,"name":781,"points":782,"category":783},"17146451","Wired-elements",650,"dev_tools",{"id":785,"name":786,"points":787,"category":788},"17147272","Parabola.io",291,"web_saas",{"id":790,"name":791,"points":792,"category":793},"17189652","Writing Streak",262,"productivity",{"id":795,"name":796,"points":797,"category":798},"17180686","Recursive Recipes",250,"consumer_social",{"id":800,"name":801,"points":802,"category":793},"17149371","Clippi.io",208,{"id":804,"name":805,"points":806,"category":807},"17152630","NimForum",186,"infrastructure",false,"v2",{"id":811,"name":5,"line":6,"ai":808,"cat":20,"year":13,"points":14,"comments":15,"rec":29,"s":812,"top":18,"kw":813,"maker":11,"domain":10,"tier":19,"attempts":43,"strip":814,"url":9,"mix":815,"praise":70,"objection":87,"sub":21},17173051,-0.22,[24,25,26,27,28],"5313300313401012110022324201421331022441",[32,33,18,34],1793990974746]