Understanding Bitcoin through Austrian Economics and libertarian philosophy.https://learn.txid.uk/https://learn.txid.uk/en/dharma/practice/ganhwa-seon/https://learn.txid.uk/en/dharma/practice/ganhwa-seon/One question Korean meditation halls have carried for nearly a thousand years. What ganhwa seon is, why the Mu koan is built so that it cannot be solved, Dahui's break with silent illumination, the ten ailments that ruin the practice, and what a beginner should know before sitting.Wed, 09 Sep 2026 12:00:00 GMThttps://learn.txid.uk/en/articles/krw-stablecoin/https://learn.txid.uk/en/articles/krw-stablecoin/What a coin pegged to one won actually is, why full reserves are not the same thing as deposit insurance, why the Bank of Korea and the Financial Services Commission split over who may issue it, and where the legislation stands in September 2026.Wed, 09 Sep 2026 00:00:00 GMThttps://learn.txid.uk/en/dharma/sutras/heart-sutra/https://learn.txid.uk/en/dharma/sutras/heart-sutra/A guide to the Heart Sutra, the 260-character scripture chanted daily for nearly fourteen hundred years. What the five empty aggregates and form-is-emptiness mean, what the chain of negations aims at, the five-part structure with the full Chinese text and an English rendering, and the gate gate mantra.Mon, 07 Sep 2026 12:30:00 GMThttps://learn.txid.uk/en/articles/ecash-explained/https://learn.txid.uk/en/articles/ecash-explained/Chaum's ecash reborn on Lightning. How blind signatures create a custodian that cannot keep a ledger, how Cashu and Fedimint divide up the trust, and where this echoes gold-backed banknotes and where it decisively breaks from them.Mon, 07 Sep 2026 00:00:00 GMThttps://learn.txid.uk/en/articles/bitcoin-timelocks/https://learn.txid.uk/en/articles/bitcoin-timelocks/From the nLockTime already sitting in your ordinary payments, to the two-layer design of CLTV and CSV that never reads a clock, to the median time that blocks miner timestamp games. The Lightning Network and inheritance planning all stand on top of this.Fri, 04 Sep 2026 01:00:00 GMThttps://learn.txid.uk/en/ideas/soft-fork-hard-fork/https://learn.txid.uk/en/ideas/soft-fork-hard-fork/Bitcoin has no update button. How narrowing the rules differs from widening them, and why Bitcoin insists on soft forks.Tue, 25 Aug 2026 06:47:43 GMThttps://learn.txid.uk/en/articles/psbt-explained/https://learn.txid.uk/en/articles/psbt-explained/The format that makes air-gapped wallets and multisig actually work. The six roles of BIP-174, what a signing device is required to verify, the attack that lies to offline devices about the fee, and how Taproot ended it.Mon, 24 Aug 2026 00:20:00 GMThttps://learn.txid.uk/en/articles/quantum-computing-bitcoin/https://learn.txid.uk/en/articles/quantum-computing-bitcoin/What the quantum threat actually is. The thing that breaks is not your wallet but an exposed public key, and over 6 million BTC already have theirs on-chain. BIP-360, BIP-361, and the property-rights fight over coins nobody moves.Fri, 21 Aug 2026 06:20:00 GMThttps://learn.txid.uk/en/articles/silent-payments/https://learn.txid.uk/en/articles/silent-payments/Silent Payments (BIP-352) let you publish a single static address and receive a fresh output every time. How the sender derives the address, what scanning costs the receiver, how labels work, and which wallets support it as of August 2026.Thu, 20 Aug 2026 00:00:00 GMThttps://learn.txid.uk/en/ideas/taproot/https://learn.txid.uk/en/ideas/taproot/Taproot is the 2021 Bitcoin upgrade that makes transactions with complex spending conditions look identical to ordinary single-signature payments, improving privacy and efficiency through Schnorr signatures, MAST, and Tapscript.Sat, 20 Jun 2026 05:00:00 GMThttps://learn.txid.uk/en/ideas/censorship-resistance/https://learn.txid.uk/en/ideas/censorship-resistance/No one can block your transaction, and no one can take your assets without your key. The deepest reason Bitcoin truly matters - what censorship resistance is and how it works.Sun, 24 May 2026 05:12:26 GMThttps://learn.txid.uk/en/ideas/cbdc/https://learn.txid.uk/en/ideas/cbdc/CBDC is often called 'the government's bitcoin,' but it is in fact the opposite. What programmable money issued and controlled by a central bank actually is, and why it is Bitcoin's mirror image.Fri, 22 May 2026 14:01:52 GMThttps://learn.txid.uk/en/ideas/fractional-reserve-banking/https://learn.txid.uk/en/ideas/fractional-reserve-banking/The money you deposit at a bank is not sleeping in a vault. The bank lends most of it out, and in the process it creates new money. How most of the world's money is born from 'a loan.'Mon, 18 May 2026 23:23:47 GMThttps://learn.txid.uk/en/articles/bitcoin-tax-2027-scenarios/https://learn.txid.uk/en/articles/bitcoin-tax-2027-scenarios/On January 1, 2027, Korea begins taxing crypto gains at 22%. Deemed acquisition cost reset, spousal split for doubled deduction, self-custody cost basis evidence, foreign exchange self-reporting, and mining and Zap income. The five concrete scenarios every Korean Bitcoin holder should audit before it takes effect.Sun, 17 May 2026 23:42:11 GMThttps://learn.txid.uk/en/ideas/bitcoin-whitepaper/https://learn.txid.uk/en/ideas/bitcoin-whitepaper/On October 31, 2008, a paper just 9 pages long changed the history of money. A start-to-finish reading of 'Bitcoin: A Peer-to-Peer Electronic Cash System' - what it solved, and how its core sections fit each piece together.Sun, 17 May 2026 11:36:09 GMThttps://learn.txid.uk/en/ideas/satoshi-nakamoto/https://learn.txid.uk/en/ideas/satoshi-nakamoto/We don't know who created Bitcoin. And they chose to vanish. This is not a gap in the story but the core of Bitcoin's design - the credible neutrality created by a fair launch and the absence of a founder.Fri, 15 May 2026 02:28:34 GMThttps://learn.txid.uk/en/ideas/21-million-cap/https://learn.txid.uk/en/ideas/21-million-cap/Bitcoin will never exceed 21 million coins. Where the number comes from, who enforces it, and whether it can really be changed - the nature of the first absolute scarcity in human history.Tue, 12 May 2026 22:02:58 GMThttps://learn.txid.uk/en/ideas/seed-phrase-hd-wallet/https://learn.txid.uk/en/ideas/seed-phrase-hd-wallet/How 12 or 24 words stand in for an unlimited number of Bitcoin keys. BIP-39 mnemonics, BIP-32 HD wallets, derivation paths, and the practical rules for backing up a seed safely.Mon, 11 May 2026 13:43:11 GMThttps://learn.txid.uk/en/ideas/public-key-cryptography/https://learn.txid.uk/en/ideas/public-key-cryptography/Bitcoin has no usernames, no passwords, and no banks. Ownership is proven by knowing a single number - the private key. A guide to the public-key cryptography that the entire system rests on.Sun, 10 May 2026 00:17:43 GMThttps://learn.txid.uk/en/ideas/hash-function/https://learn.txid.uk/en/ideas/hash-function/How SHA-256 underpins proof of work, Merkle trees, address generation, and the chain of blocks itself. The four properties that make a hash function useful and exactly where Bitcoin uses each.Tue, 05 May 2026 02:08:00 GMThttps://learn.txid.uk/en/articles/ai-agents-lightning-payments/https://learn.txid.uk/en/articles/ai-agents-lightning-payments/AI agents cannot get credit cards. Visa bans automated systems and settlements take days. Lightning Network already filled the gap. From the revival of HTTP 402 to the x402 protocol, here is how the payment layer for the AI era is being built.Tue, 05 May 2026 00:42:00 GMThttps://learn.txid.uk/en/articles/how-to-buy-bitcoin-korea/https://learn.txid.uk/en/articles/how-to-buy-bitcoin-korea/A practical guide to buying Bitcoin in Korea: real-name accounts, the five exchanges, KYC and the Travel Rule, 2027 taxes, and withdrawing to self-custody.Mon, 27 Apr 2026 23:14:00 GMThttps://learn.txid.uk/en/articles/bitcoin-for-business/https://learn.txid.uk/en/articles/bitcoin-for-business/A practical guide for merchants and small businesses on accepting Bitcoin payments - the case for and against, BTCPay Server self-hosting vs custodial processors (Strike, OpenNode, IBEX), Lightning vs on-chain trade-offs, accounting treatment, tax implications, and jurisdiction-specific rules for the US, South Korea, and Japan. Not financial or legal advice.Mon, 27 Apr 2026 02:23:00 GMThttps://learn.txid.uk/en/articles/bitcoin-charity-donation/https://learn.txid.uk/en/articles/bitcoin-charity-donation/A practical guide to donating Bitcoin to qualified charities - the tax advantages of donating appreciated property, how to choose a reputable charity, step-by-step donation methods, record-keeping requirements, and jurisdiction-specific rules for the US, South Korea, and Japan. Not tax advice.Mon, 27 Apr 2026 00:47:00 GMThttps://learn.txid.uk/en/dharma/fusion/emptiness-and-quantum-mechanics/https://learn.txid.uk/en/dharma/fusion/emptiness-and-quantum-mechanics/Emptiness and the quantum observer effect point in the same directionThu, 23 Apr 2026 07:42:13 GMThttps://learn.txid.uk/en/articles/onchain-analysis-101/https://learn.txid.uk/en/articles/onchain-analysis-101/From the mempool and realized price to Long-Term Holder supply and HODL Waves. A practical introduction to the five on-chain metrics every beginner should learn first, with free tools and real-world examples for each.Sat, 18 Apr 2026 23:42:19 GMThttps://learn.txid.uk/en/articles/hardware-wallet-comparison/https://learn.txid.uk/en/articles/hardware-wallet-comparison/A comparison of four hardware wallets from the perspective of attack surface, security model, and software transparency. Evaluated against actual disclosed vulnerabilities and design decisions rather than marketing copy.Sat, 18 Apr 2026 07:08:31 GMThttps://learn.txid.uk/en/articles/lightning-channel-operations/https://learn.txid.uk/en/articles/lightning-channel-operations/A channel management guide for anyone running their own Lightning node. Covers the concrete steps and numbers behind opening channels, acquiring inbound capacity, and optimizing routing revenue.Sat, 18 Apr 2026 04:47:52 GMThttps://learn.txid.uk/en/articles/ordinals-brc20-runes/https://learn.txid.uk/en/articles/ordinals-brc20-runes/Understand what Ordinals, BRC-20, and Runes are and how they differ from each other in five minutes. Technical mechanics, the block space controversy, and their impact on the fee market - all in one place.Sat, 18 Apr 2026 00:23:14 GMThttps://learn.txid.uk/en/articles/lightning-login/https://learn.txid.uk/en/articles/lightning-login/What Lightning login is, why you do not need any bitcoin to use it, and how to sign into every txid.uk site in about thirty seconds with Wallet of Satoshi.Tue, 14 Apr 2026 02:30:00 GMT