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Over Brokers treasure hunt",{"type":490,"value":491,"toc":941},"minimark",[492,500,517,521,526,531,534,540,543,547,555,558,562,572,576,580,603,607,627,637,641,650,654,673,676,680,684,701,884,894,898,919,923,930,934,937],[493,494,495,496,499],"p",{},"Summer 2020. ",[497,498,321],"a",{"href":322}," has writer's block. So he reads about book treasure hunts instead, Kit Williams' Masquerade and Christopher Manson's Maze. Then he gets an idea. Why bury a golden hare when a private key fits on a page?",[493,501,502,503,507,508,512,513,516],{},"He hid eight keys in ",[504,505,506],"em",{},"Move Over Brokers, Here Comes The Blockchain",". Each address got ",[509,510,511],"strong",{},"0.002 BTC",", a few days before the book came out. Why 0.002? That's roughly the bitcoin there is per person. The Italian translation, ",[504,514,515],{},"Scansatevi Broker",", got four more lots in September 2021. Writer's block, cured the fun way.",[518,519],"collection-facts",{"collection":520},"move-over-brokers",[522,523,525],"h2",{"id":524},"how-the-move-over-brokers-hunt-works","How the Move Over Brokers hunt works",[527,528,530],"h3",{"id":529},"the-keys-are-in-the-book","The keys are in the book",[493,532,533],{},"There's no puzzle page and no labels. Each puzzle hides in the prose or in a figure. The hunt announcement at the end of the English book sets the rules in two lines:",[535,536,537],"blockquote",{},[493,538,539],{},"You hold the source of each and every key in your hands... as long as you have a physical copy, that is. Note that there are plenty of red herrings too.",[493,541,542],{},"Red herrings, in a book about blockchain. Fair warning.",[527,544,546],{"id":545},"hash-the-answer-three-times","Hash the answer three times",[493,548,549,550,554],{},"The same section closes with a line in ROT13. Decoded, it says: \"In many cases, you'll have to hash the answer three times.\" That's the whole recipe. Take the answer string, run SHA-256 over it, then over the digest bytes, then once more. The result is the private key, with an uncompressed P2PKH address on top. The records tag it ",[551,552,553],"code",{},"triple-sha256-brainwallet",".",[493,556,557],{},"\"In many cases\" carries a lot of weight there, though. Two lots are BIP39 phrases. Two read the key straight out of a figure. The red herrings weren't a joke.",[527,559,561],{"id":560},"the-author-forgot-on-purpose","The author forgot on purpose",[493,563,564,565,571],{},"In his ",[497,566,570],{"href":567,"rel":568},"https:\u002F\u002Fkf106.medium.com\u002Feveryone-loves-a-treasure-hunt-93885ae8d80a",[569],"nofollow","2025 retrospective"," Keir lists all twelve addresses. He also says he has no record of the keys and no notes on how the puzzles were built. \"I try not to think about them at all.\" So no hint is coming from the author, ever. The hunt belongs to the readers now.",[522,573,575],{"id":574},"who-solved-the-move-over-brokers-puzzles","Who solved the Move Over Brokers puzzles",[527,577,579],{"id":578},"three-lots-in-ten-weeks","Three lots in ten weeks",[493,581,582,583,586,587,590,591,594,595,598,599,602],{},"Keir thought the puzzles were harder than they were. ",[551,584,585],{},"en-easy-2"," moved on January 4, 2021, five weeks after funding. ",[551,588,589],{},"en-medium-2"," followed six days later, and ",[551,592,593],{},"en-very-hard-1"," on February 5. ",[551,596,597],{},"en-easy-1"," held out until January 2022, ",[551,600,601],{},"it-easy"," until February 2022. None of those players said how.",[527,604,606],{"id":605},"floflo777-shows-up-in-2026","floflo777 shows up in 2026",[493,608,609,610,612,613,616,617,620,621,626],{},"Then nothing for four years. In June 2026 ",[497,611,441],{"href":442}," took ",[551,614,615],{},"en-hard-1",", then ",[551,618,619],{},"en-hard-2",", then two Italian lots in July. Every key went public in ",[497,622,625],{"href":623,"rel":624},"https:\u002F\u002Fgithub.com\u002Ffloflo777\u002Fopen-crypto-puzzles\u002Ftree\u002Fmain\u002F2-mid-prizes\u002Fkeir-finlow-bates-blockchain-book-600ksats",[569],"open-crypto-puzzles",", with the payout txids next to it.",[493,628,629,630,633,634,636],{},"And then floflo777 went back to the lots other people had already emptied. A section titled \"Elementary, my dear Watson\" plus a planted 221 gives ",[551,631,632],{},"221B Baker Street",". Hash it three times and you get the key to ",[551,635,597],{},". Sherlock would approve.",[527,638,640],{"id":639},"the-isbn-is-the-best-joke-in-the-book","The ISBN is the best joke in the book",[493,642,643,645,646,649],{},[551,644,585],{},", the first lot anyone claimed, is ",[551,647,648],{},"9781688289970",". That's the ISBN of the paperback, printed on its back cover. The Kindle edition has an ASIN and no ISBN. So \"as long as you have a physical copy\" was literal all along. The easiest lot in the hunt was a barcode.",[522,651,653],{"id":652},"whats-still-open-in-move-over-brokers","What's still open in Move Over Brokers",[493,655,656,660,661,664,665,668,669,672],{},[657,658],"dataset-count",{"collection":520,"status":659},"unsolved"," lots still hold their 0.002 BTC: ",[551,662,663],{},"en-medium-1",", ",[551,666,667],{},"en-very-hard-2"," and ",[551,670,671],{},"it-very-hard",". floflo777's notebook logs a long list of misses against them. It covers chapters hashed whole, page numbers, every ISBN of every edition, even a proof of work search over Figure 11. Nothing matched.",[493,674,675],{},"Their best lead is boring and probably right. Buy the paperback. Some answer could sit on a page the ebook doesn't have. Got an original print run on your shelf?",[522,677,679],{"id":678},"what-the-move-over-brokers-records-carry","What the Move Over Brokers records carry",[527,681,683],{"id":682},"derived-keys-and-published-keys","Derived keys and published keys",[493,685,686,687,689,690,692,693,696,697,700],{},"Nobody printed a key for ",[551,688,597],{}," or ",[551,691,585],{},". The answers are public, the recipe is public, so the record runs it and marks the key ",[551,694,695],{},".derived()",". The four lots floflo777 took have their keys published, so ",[551,698,699],{},"verify()"," checks those as quoted.",[702,703,709],"pre",{"className":704,"code":705,"filename":706,"language":707,"meta":708,"style":708},"language-ts shiki shiki-themes puzzles puzzles puzzles","export const moveOverBrokersEnEasy1 = puzzle({\n  id: \"move-over-brokers\u002Fen-easy-1\",\n  chain: \"bitcoin\",\n  address: \"14aFhno96fkt7knLWMDQ4j8yh8v5hBF4n1\",\n  sourceUrl: ARTICLE,\n  startedAt: \"2020-11-28 16:24:07\",\n  status: Status.Solved,\n  key: hex(\"72048596fda6013a976c22ac4d0b1dbc29a3ca624f4740a64b195ad10f4e1b89\")\n    .wif(\"5JgW1WrxCgC4275UqHQfTVpdnyEPJDaaSf76VPCC7Q6KX14Cunc\")\n    .passphrase(\"221B Baker Street\")\n    .derived(),\n  techniques: [technique(\"triple-sha256-brainwallet\", SOLUTION)],\n  prize: 0.002,\n});\n","src\u002Fcollections\u002Fmove-over-brokers\u002Fen-easy-1.ts","ts","",[551,710,711,737,750,761,772,778,789,795,813,829,844,855,872,878],{"__ignoreMap":708},[712,713,716,720,723,727,730,734],"span",{"class":714,"line":715},"line",1,[712,717,719],{"class":718},"skH_V","export",[712,721,722],{"class":718}," const",[712,724,726],{"class":725},"s38Sx"," moveOverBrokersEnEasy1 ",[712,728,729],{"class":718},"=",[712,731,733],{"class":732},"sK71F"," puzzle",[712,735,736],{"class":725},"({\n",[712,738,740,743,747],{"class":714,"line":739},2,[712,741,742],{"class":725},"  id: ",[712,744,746],{"class":745},"shU9J","\"move-over-brokers\u002Fen-easy-1\"",[712,748,749],{"class":725},",\n",[712,751,753,756,759],{"class":714,"line":752},3,[712,754,755],{"class":725},"  chain: ",[712,757,758],{"class":745},"\"bitcoin\"",[712,760,749],{"class":725},[712,762,764,767,770],{"class":714,"line":763},4,[712,765,766],{"class":725},"  address: ",[712,768,769],{"class":745},"\"14aFhno96fkt7knLWMDQ4j8yh8v5hBF4n1\"",[712,771,749],{"class":725},[712,773,775],{"class":714,"line":774},5,[712,776,777],{"class":725},"  sourceUrl: ARTICLE,\n",[712,779,781,784,787],{"class":714,"line":780},6,[712,782,783],{"class":725},"  startedAt: ",[712,785,786],{"class":745},"\"2020-11-28 16:24:07\"",[712,788,749],{"class":725},[712,790,792],{"class":714,"line":791},7,[712,793,794],{"class":725},"  status: Status.Solved,\n",[712,796,798,801,804,807,810],{"class":714,"line":797},8,[712,799,800],{"class":725},"  key: ",[712,802,803],{"class":732},"hex",[712,805,806],{"class":725},"(",[712,808,809],{"class":745},"\"72048596fda6013a976c22ac4d0b1dbc29a3ca624f4740a64b195ad10f4e1b89\"",[712,811,812],{"class":725},")\n",[712,814,816,819,822,824,827],{"class":714,"line":815},9,[712,817,818],{"class":725},"    .",[712,820,821],{"class":732},"wif",[712,823,806],{"class":725},[712,825,826],{"class":745},"\"5JgW1WrxCgC4275UqHQfTVpdnyEPJDaaSf76VPCC7Q6KX14Cunc\"",[712,828,812],{"class":725},[712,830,832,834,837,839,842],{"class":714,"line":831},10,[712,833,818],{"class":725},[712,835,836],{"class":732},"passphrase",[712,838,806],{"class":725},[712,840,841],{"class":745},"\"221B Baker Street\"",[712,843,812],{"class":725},[712,845,847,849,852],{"class":714,"line":846},11,[712,848,818],{"class":725},[712,850,851],{"class":732},"derived",[712,853,854],{"class":725},"(),\n",[712,856,858,861,864,866,869],{"class":714,"line":857},12,[712,859,860],{"class":725},"  techniques: [",[712,862,863],{"class":732},"technique",[712,865,806],{"class":725},[712,867,868],{"class":745},"\"triple-sha256-brainwallet\"",[712,870,871],{"class":725},", SOLUTION)],\n",[712,873,875],{"class":714,"line":874},13,[712,876,877],{"class":725},"  prize: 0.002,\n",[712,879,881],{"class":714,"line":880},14,[712,882,883],{"class":725},"});\n",[493,885,886,887,889,890,893],{},"A test hashes every passphrase tagged ",[551,888,553],{}," three times and compares it with the key. Every tagged record rebuilds, the published ",[551,891,892],{},"it-hard"," key included.",[527,895,897],{"id":896},"claimed-with-the-recipe-and-without-the-key","Claimed, with the recipe and without the key",[493,899,900,902,903,906,907,910,911,668,913,915,916,918],{},[551,901,589],{}," is a 16 by 16 bitmap in Figure 9, read row by row as key bits. One column isn't drawn, and floflo777 published the missing bits, ",[551,904,905],{},"0xb968",". But the bitmap itself lives only in the book. No key, so the lot stays ",[551,908,909],{},"claimed",", with the method as a published answer. ",[551,912,593],{},[551,914,601],{}," are ",[551,917,909],{}," too, and nobody knows their answers.",[527,920,922],{"id":921},"the-retrospective-swaps-two-italian-lots","The retrospective swaps two Italian lots",[493,924,925,926,929],{},"Keir's article marks the Italian medium address solved on February 18, 2022, and the easy one open. The chain says the opposite. ",[551,927,928],{},"1MEstvLAzc5DzJtvx7uyvKNNUCPN3ofWMK",", the easy one, moved that day. The medium one waited until July 2026. The records keep his difficulty labels and the chain's dates. Easy mistake when you forgot the answers on purpose.",[522,931,933],{"id":932},"the-move-over-brokers-puzzle-records","The Move Over Brokers puzzle records",[935,936],"collection-puzzles",{"collection":520},[938,939,940],"style",{},"html pre.shiki code .skH_V, html code.shiki .skH_V{--shiki-light:var(--shiki-token-keyword);--shiki-default:var(--shiki-token-keyword);--shiki-dark:var(--shiki-token-keyword)}html pre.shiki code .s38Sx, html code.shiki .s38Sx{--shiki-light:var(--ui-text-highlighted);--shiki-default:var(--ui-text-highlighted);--shiki-dark:var(--ui-text-highlighted)}html pre.shiki code .sK71F, html code.shiki .sK71F{--shiki-light:var(--shiki-token-function);--shiki-default:var(--shiki-token-function);--shiki-dark:var(--shiki-token-function)}html pre.shiki code .shU9J, html code.shiki .shU9J{--shiki-light:var(--shiki-token-string);--shiki-default:var(--shiki-token-string);--shiki-dark:var(--shiki-token-string)}html .light .shiki span {color: var(--shiki-light);background: var(--shiki-light-bg);font-style: var(--shiki-light-font-style);font-weight: var(--shiki-light-font-weight);text-decoration: var(--shiki-light-text-decoration);}html.light .shiki span {color: var(--shiki-light);background: var(--shiki-light-bg);font-style: var(--shiki-light-font-style);font-weight: var(--shiki-light-font-weight);text-decoration: var(--shiki-light-text-decoration);}html .default .shiki span {color: var(--shiki-default);background: var(--shiki-default-bg);font-style: var(--shiki-default-font-style);font-weight: var(--shiki-default-font-weight);text-decoration: var(--shiki-default-text-decoration);}html .shiki span {color: var(--shiki-default);background: var(--shiki-default-bg);font-style: var(--shiki-default-font-style);font-weight: var(--shiki-default-font-weight);text-decoration: var(--shiki-default-text-decoration);}html .dark .shiki span {color: var(--shiki-dark);background: var(--shiki-dark-bg);font-style: var(--shiki-dark-font-style);font-weight: var(--shiki-dark-font-weight);text-decoration: var(--shiki-dark-text-decoration);}html.dark .shiki span {color: var(--shiki-dark);background: var(--shiki-dark-bg);font-style: var(--shiki-dark-font-style);font-weight: var(--shiki-dark-font-weight);text-decoration: var(--shiki-dark-text-decoration);}",{"title":708,"searchDepth":739,"depth":739,"links":942},[943,948,953,954,959],{"id":524,"depth":739,"text":525,"children":944},[945,946,947],{"id":529,"depth":752,"text":530},{"id":545,"depth":752,"text":546},{"id":560,"depth":752,"text":561},{"id":574,"depth":739,"text":575,"children":949},[950,951,952],{"id":578,"depth":752,"text":579},{"id":605,"depth":752,"text":606},{"id":639,"depth":752,"text":640},{"id":652,"depth":739,"text":653},{"id":678,"depth":739,"text":679,"children":955},[956,957,958],{"id":682,"depth":752,"text":683},{"id":896,"depth":752,"text":897},{"id":921,"depth":752,"text":922},{"id":932,"depth":739,"text":933},"Keir Finlow-Bates hid Bitcoin keys in his 2020 blockchain book and its Italian translation. Some answers are printed only on the paperback","md",null,{"icon":47},{"title":208},{"title":966,"description":960},"Move Over Brokers treasure hunt: Bitcoin keys hidden in a blockchain book","ScDGbRT7HxwIhnJaQD-kv6Ings0uFYrUemJnUbiq91I",[969,971],{"title":204,"path":205,"stem":206,"description":970,"children":-1},"A 2019 BitcoinTalk question whose 32 character answer is the private key. Someone found the eight words seven months later and never said how",{"title":212,"path":213,"stem":214,"description":972,"children":-1},"AH White hid a real 24-word Bitcoin seed in the thriller Walking Banks. 800000 sats wait on two addresses. Four words are known and twenty are not.",{"numeric":974,"rows":975},false,[976,981,984,987,990,993,996,999,1002,1004,1008,1011],{"id":977,"name":597,"status":978,"prize":511,"address":979,"pubkey":980,"key":980,"derived":980,"bits":-1},"move-over-brokers\u002Fen-easy-1","solved","14aFhno96fkt7knLWMDQ4j8yh8v5hBF4n1",true,{"id":982,"name":585,"status":978,"prize":511,"address":983,"pubkey":980,"key":980,"derived":980,"bits":-1},"move-over-brokers\u002Fen-easy-2","14utGQn5GdfPvUrHNLAwTmmP99QpXm9mg6",{"id":985,"name":663,"status":659,"prize":511,"address":986,"pubkey":974,"key":974,"derived":974,"bits":-1},"move-over-brokers\u002Fen-medium-1","17Y9czcbcCz433QXsy1SGQjwLb27BBtLLZ",{"id":988,"name":589,"status":909,"prize":511,"address":989,"pubkey":980,"key":974,"derived":974,"bits":-1},"move-over-brokers\u002Fen-medium-2","1QFafw3weoWTRQhiLafRw2eyWbVmES6wfJ",{"id":991,"name":615,"status":978,"prize":511,"address":992,"pubkey":980,"key":980,"derived":974,"bits":-1},"move-over-brokers\u002Fen-hard-1","181rPpfdUGFg4fVEdhDZEfDbBSqgigtoZR",{"id":994,"name":619,"status":978,"prize":511,"address":995,"pubkey":980,"key":980,"derived":974,"bits":-1},"move-over-brokers\u002Fen-hard-2","161YgNX2NrCzGunWvoV1hN3DuzWeuovBK3",{"id":997,"name":593,"status":909,"prize":511,"address":998,"pubkey":980,"key":974,"derived":974,"bits":-1},"move-over-brokers\u002Fen-very-hard-1","1KZei2D5yz3UJ59LvXsC1Y9y4ktSgcnVwz",{"id":1000,"name":667,"status":659,"prize":511,"address":1001,"pubkey":974,"key":974,"derived":974,"bits":-1},"move-over-brokers\u002Fen-very-hard-2","1DZ5NbUwDgxeJkKhQLgYcUUX36PtYso1pm",{"id":1003,"name":601,"status":909,"prize":511,"address":928,"pubkey":980,"key":974,"derived":974,"bits":-1},"move-over-brokers\u002Fit-easy",{"id":1005,"name":1006,"status":978,"prize":511,"address":1007,"pubkey":980,"key":980,"derived":974,"bits":-1},"move-over-brokers\u002Fit-medium","it-medium","1Q78hDeaHXQbuCSQxG1uPAc4V3jsuVUG9r",{"id":1009,"name":892,"status":978,"prize":511,"address":1010,"pubkey":980,"key":980,"derived":974,"bits":-1},"move-over-brokers\u002Fit-hard","1QExGvuieS9MvuKC3R1qjp6jGTVcqisTDj",{"id":1012,"name":671,"status":659,"prize":511,"address":1013,"pubkey":974,"key":974,"derived":974,"bits":-1},"move-over-brokers\u002Fit-very-hard","19kkawFcg2U2s6vq368MXD7FJU9JZvRrjA",{"key":520,"author":321,"authorKey":1015,"authorUrl":1016,"total":857,"statuses":1017,"chains":1018,"prize":1020,"unsolvedPrize":1022,"withPubkey":815,"withKey":780,"firstStarted":1024,"lastStarted":1025,"hints":1026,"ticks":1027,"position":1028,"registered":1029,"dataVersion":1030},"keir-finlow-bates","https:\u002F\u002Fkf106.medium.com\u002F",{"solved":780,"unsolved":752,"claimed":752},[1019],"bitcoin",{"BTC":1021},0.024,{"BTC":1023},0.006,"2020-11-28 16:24:07","2021-09-11 09:28:09",[],[978,978,659,909,978,978,909,659,909,978,978,659],23,47,"3dd87c804ae0",1791479561163]