ISM50: articlesISM50 documents the history of crypto from 2008 onward: what happened, in what order, and what the surviving record actually says. It publishes no prices, no forecasts and no advice.https://ism50.com/en-CAbit gold: Unforgeable Costliness as a Design Goalhttps://ism50.com/articles/bit-gold-the-proposal/https://ism50.com/articles/bit-gold-the-proposal/A proposal that framed digital scarcity as a property to be manufactured rather than declared, and where its own author said it fell short.Fri, 09 Oct 2026 00:00:00 GMTHardcoded Checkpoints Were an Admission, and a Reasonable Onehttps://ism50.com/articles/checkpoints-and-what-they-admitted/https://ism50.com/articles/checkpoints-and-what-they-admitted/Baking known good block hashes into the software traded a little purity for a lot of practical safety, and the tradeoff was argued openly.Tue, 06 Oct 2026 00:00:00 GMTThe Bug That Created Coins Out of Nothing, and the Fix That Rewrote Historyhttps://ism50.com/articles/the-value-overflow-incident/https://ism50.com/articles/the-value-overflow-incident/An arithmetic overflow allowed a transaction that violated the supply rule, and the response was a patched client and a reorganised chain.Fri, 02 Oct 2026 00:00:00 GMTThe Supply Schedule Is a Rule in Code, Not a Promise in a Documenthttps://ism50.com/articles/the-supply-schedule/https://ism50.com/articles/the-supply-schedule/Where the issuance rule actually lives, what enforces it, and why calling it a hard cap is a statement about social consensus.Tue, 29 Sep 2026 00:00:00 GMTb-money: A Short Proposal That Named Most of the Problemhttps://ism50.com/articles/b-money-the-proposal/https://ism50.com/articles/b-money-the-proposal/A brief 1998 proposal for a distributed currency that described collective bookkeeping and left the hardest part explicitly unsolved.Fri, 25 Sep 2026 00:00:00 GMTThere Was a Key That Could Broadcast a Message to Every Nodehttps://ism50.com/articles/the-alert-key/https://ism50.com/articles/the-alert-key/The original software included a signed alert system controlled by a small number of holders, and removing it was a deliberate decision.Thu, 24 Sep 2026 00:00:00 GMTThe Pizza Story Is True, and Almost Everything Said About It Is Nothttps://ism50.com/articles/the-pizza-transaction-as-folklore/https://ism50.com/articles/the-pizza-transaction-as-folklore/A real, verifiable early purchase became crypto's founding parable, and the parable version has replaced the documented one.Wed, 23 Sep 2026 00:00:00 GMTThe First Transaction Between Two People, and Why It Is Verifiablehttps://ism50.com/articles/the-first-transaction-on-chain/https://ism50.com/articles/the-first-transaction-on-chain/One of the very few events in early crypto history that can be checked directly rather than trusted, and what that difference is worth.Tue, 22 Sep 2026 00:00:00 GMTHashcash: What the Proposal Actually Said It Was Forhttps://ism50.com/articles/hashcash-the-actual-mechanism/https://ism50.com/articles/hashcash-the-actual-mechanism/Proof of work was designed as an anti-spam postage stamp, not as a monetary policy, and the original document is explicit about it.Mon, 21 Sep 2026 00:00:00 GMTA Hard Fork Loosens the Rules, and Everyone Has to Move at Oncehttps://ism50.com/articles/what-a-hard-fork-actually-is/https://ism50.com/articles/what-a-hard-fork-actually-is/A rule change old software rejects forces a coordinated upgrade, and a failed coordination produces two chains and two assets.Sun, 20 Sep 2026 00:00:00 GMTHow Something With No Price Acquires Onehttps://ism50.com/articles/how-a-thing-with-no-price-gets-one/https://ism50.com/articles/how-a-thing-with-no-price-gets-one/Price discovery for a new asset is a social process before it is a market process, and the mechanism is worth understanding without any numbers.Sat, 19 Sep 2026 00:00:00 GMTThe First Client Shipped Features the Whitepaper Never Mentionedhttps://ism50.com/articles/what-the-first-client-actually-did/https://ism50.com/articles/what-the-first-client-actually-did/The initial source release included a marketplace, a messaging idea and a scripting system, none of which appear in the paper.Fri, 18 Sep 2026 00:00:00 GMTThe Crypto Wars: How Strong Encryption Stopped Being a Munitionhttps://ism50.com/articles/the-crypto-wars/https://ism50.com/articles/the-crypto-wars/The sequenced fight over export controls on strong cryptography in the 1990s, and why its outcome made everything after 2009 legally possible.Thu, 17 Sep 2026 00:00:00 GMTA Soft Fork Tightens the Rules, and Old Nodes Never Noticehttps://ism50.com/articles/what-a-soft-fork-actually-is/https://ism50.com/articles/what-a-soft-fork-actually-is/The distinction that governs every upgrade fight: a rule change that old software still accepts, and why that backwards compatibility is political.Wed, 16 Sep 2026 00:00:00 GMTGiving It Away Was a Deliberate Answer to a Real Problemhttps://ism50.com/articles/faucets-and-the-distribution-problem/https://ism50.com/articles/faucets-and-the-distribution-problem/A currency with no holders has no users and no merchants, and the earliest answer to that deadlock was simply to hand it out.Tue, 15 Sep 2026 00:00:00 GMTThe Release Announcement Read as a Product Launchhttps://ism50.com/articles/the-first-release-announcement/https://ism50.com/articles/the-first-release-announcement/The original software announcement described features, requirements and limits, and reads far more like a beta release note than a manifesto.Mon, 14 Sep 2026 00:00:00 GMTThe Cypherpunks Mailing List as an Institutionhttps://ism50.com/articles/the-cypherpunks-list/https://ism50.com/articles/the-cypherpunks-list/A mailing list with no membership, no funding and no leadership produced a body of ideas that most of this site's later chapters are built on.Sun, 13 Sep 2026 00:00:00 GMTRough Consensus Was Borrowed From a Culture With Nothing at Stakehttps://ism50.com/articles/rough-consensus-and-running-code/https://ism50.com/articles/rough-consensus-and-running-code/The decision norm crypto inherited from internet standards bodies was designed for protocols where disagreement did not move anyone's balance.Sat, 12 Sep 2026 00:00:00 GMTWhen Mining Was Something You Left Running Overnighthttps://ism50.com/articles/cpu-mining-as-a-hobby/https://ism50.com/articles/cpu-mining-as-a-hobby/The sequence from a checkbox in a desktop client to specialised hardware, and the exact points where each step stopped being viable at home.Fri, 11 Sep 2026 00:00:00 GMTThe Genesis Block Carries a Headline, and That Is Almost All We Knowhttps://ism50.com/articles/the-genesis-block-message/https://ism50.com/articles/the-genesis-block-message/What is actually encoded in the first block, what it proves about timing, and how much interpretive weight it can honestly carry.Thu, 10 Sep 2026 00:00:00 GMTe-gold and the Compliance Wall Every Centralised Issuer Eventually Hitshttps://ism50.com/articles/e-gold-and-the-compliance-wall/https://ism50.com/articles/e-gold-and-the-compliance-wall/A privately issued digital currency backed by metal that grew fast, attracted the wrong users, and was closed through its operator rather than its protocol.Wed, 09 Sep 2026 00:00:00 GMTThe Improvement Proposal Process, and What It Is Actually Forhttps://ism50.com/articles/the-bip-process/https://ism50.com/articles/the-bip-process/A numbered proposal document is a coordination artefact, not an approval mechanism, and confusing the two explains a decade of arguments.Tue, 08 Sep 2026 00:00:00 GMTHal Finney Ran the Second Node and Wrote Down What He Thoughthttps://ism50.com/articles/hal-finney-and-the-first-node/https://ism50.com/articles/hal-finney-and-the-first-node/A cryptographer with a long public record who engaged with the system immediately and left a written trail of his reasoning.Mon, 07 Sep 2026 00:00:00 GMTHow a Network With No Clock Agrees What Time It Ishttps://ism50.com/articles/how-the-network-agrees-what-time-it-is/https://ism50.com/articles/how-the-network-agrees-what-time-it-is/Every block carries a timestamp asserted by whoever produced it, and the rules that keep those assertions roughly honest are a quiet piece of the design.Sun, 06 Sep 2026 00:00:00 GMTDigiCash: Correct Cryptography, No Distributionhttps://ism50.com/articles/digicash-postmortem/https://ism50.com/articles/digicash-postmortem/A company with working privacy-preserving digital cash that could not get banks or merchants to carry it, and what that failure actually proves.Sat, 05 Sep 2026 00:00:00 GMTWhat a Maintainer Can and Cannot Do to a Public Protocolhttps://ism50.com/articles/maintainers-not-owners/https://ism50.com/articles/maintainers-not-owners/Commit access looks like control and is not, because a maintainer can merge anything and cannot make anyone run it.Fri, 04 Sep 2026 00:00:00 GMTWhat Running a Node Actually Meant Before Anyone Called It Thathttps://ism50.com/articles/running-a-node-when-nobody-did/https://ism50.com/articles/running-a-node-when-nobody-did/A single program did wallet, miner, node and interface, and understanding that bundle explains most early advice that now reads as strange.Thu, 03 Sep 2026 00:00:00 GMTReading the Bitcoin Whitepaper Section by Sectionhttps://ism50.com/articles/reading-the-bitcoin-whitepaper/https://ism50.com/articles/reading-the-bitcoin-whitepaper/A close read of the twelve numbered sections, what each one claims, and which claims the document supports rather than assumes.Wed, 02 Sep 2026 00:00:00 GMTDavid Chaum and the Idea That Payment Privacy Could Be Mathematicalhttps://ism50.com/articles/david-chaum-and-blind-signatures/https://ism50.com/articles/david-chaum-and-blind-signatures/The cryptographer who argued in the early 1980s that electronic payment would either be private by construction or surveilled by default.Tue, 01 Sep 2026 00:00:00 GMTThe Founder Left, and the Project Had to Invent a Way to Continuehttps://ism50.com/articles/the-departure/https://ism50.com/articles/the-departure/A pseudonymous author stopped participating, handed over repository access, and left a project with no succession plan to build one.Mon, 31 Aug 2026 00:00:00 GMTFor Two Years, a Web Forum Was the Entire Institutional Memoryhttps://ism50.com/articles/the-forum-as-the-only-record/https://ism50.com/articles/the-forum-as-the-only-record/Almost everything documented about the first years lives in a handful of forum threads, and that dependency has consequences we still live with.Sun, 30 Aug 2026 00:00:00 GMTWhat Was Actually Happening in Finance the Autumn the Whitepaper Appearedhttps://ism50.com/articles/the-banking-crisis-backdrop/https://ism50.com/articles/the-banking-crisis-backdrop/A sequenced account of the banking events of late 2008 and a careful statement of what can and cannot be inferred about their connection to the whitepaper.Sat, 29 Aug 2026 00:00:00 GMTThe Double Spend Problem, and Why Every Earlier Attempt Needed a Refereehttps://ism50.com/articles/the-double-spend-problem/https://ism50.com/articles/the-double-spend-problem/Why a digital coin is trivially copyable, why every pre-2009 design solved that with a trusted issuer, and what that dependency cost them.Fri, 28 Aug 2026 00:00:00 GMTHalf of the Whitepaper's Bibliography Is About Timestamping Documentshttps://ism50.com/articles/what-the-whitepaper-cites/https://ism50.com/articles/what-the-whitepaper-cites/Eight references sit on the last page of the nine page paper. Four are about timestamping documents. Following them changes what the design looks like.Thu, 27 Aug 2026 00:00:00 GMTThe constant product formula is not an equation, and k does not stay constanthttps://ism50.com/articles/constant-product-is-an-inequality/https://ism50.com/articles/constant-product-is-an-inequality/Every explainer writes x times y equals k. The contract requires greater than or equal, on fee-adjusted balances, so k rises with every trade.Wed, 26 Aug 2026 00:00:00 GMTMt. Gox: the coins were already gone before the story was toldhttps://ism50.com/articles/mt-gox-the-coins-were-already-gone/https://ism50.com/articles/mt-gox-the-coins-were-already-gone/Mt. Gox blamed a Bitcoin protocol flaw in February 2014. Two independent analyses put the theft two and a half years earlier, and the arithmetic is not close.Tue, 25 Aug 2026 00:00:00 GMTThe Bitcoin whitepaper does not contain the words everyone quotes from ithttps://ism50.com/articles/the-bitcoin-whitepaper-is-not-the-document-you-think/https://ism50.com/articles/the-bitcoin-whitepaper-is-not-the-document-you-think/The nine-page paper contains no blockchain, no cryptocurrency, no wallet and no 21 million. What it does contain is one word that everyone misreads.Mon, 24 Aug 2026 00:00:00 GMT