YYinghui22m ago · 4 min readWhy Referral Attribution Fails Silently: A Lesson in Write-Once DesignEvery referral system I have audited has the same shape: one write, at account creation, and no way to correct it afterwards. That shape is not an accident. It is what you get when you design for frauyinghuicrypto.hashnode.dev
EErik Rekola2h ago · 6 min readFinnish MiCA crypto providers and AI agentsI read the sites of the five Finnish entries in the EU register of crypto-asset service providers with an agent-readiness scanner and my own requests. All five sit at Level 1 of 5. None passes any of turva.dev
SScrapeMole3d ago · 4 min read77 pay-per-call endpoints for AI agents over x402: what the 402 looks like, what a paid call costs, and what we've actually earned ($0.50)Maker disclosure: I run ScrapeMole, which sells these endpoints. All numbers below come from our own live endpoints and our on-chain ledger, measured on 28 Oct 2026. They're small, and I'm not roundinscrapemole.hashnode.dev
Ccryptoflows4d ago · 8 min readBuilding crypto price level alerts in n8n that fire once and re-armIf you have ever built a "tell me when BTC is above X" alert, you have probably hit the same problem I did: the check runs every minute, the condition is true every minute, and you get the same messagcryptoflows.hashnode.dev
YYunus Emre Vurgun4d ago · 7 min readReading AirdropBuzz's scoreboard from code: a 25-line MCP client and three checks before you trust a scoreDisclosure: this post is an entry in the AirdropBuzz Creator Campaign. Nobody at AirdropBuzz reviewed it, and the criticism in it is my own. Nothing here is financial advice, and no airdrop reward is yunusemrevurgun.hashnode.dev
VVASP Tracker4d ago · 5 min readHong Kong's crypto exchange lists are an event log: modelling the SFC VATP lists as a state machineHong Kong's Securities and Futures Commission (SFC) publishes its virtual asset trading platform (VATP) information as a set of separate lists on one page. The page header I read said "Last update: 16vasptracker.hashnode.dev
NNIck5d ago · 9 min readA Claude Code agent that trades Bitcoin Up/Down rounds over MCPIf your trading idea fits in a few sentences, the idea is rarely the expensive part. The expensive part is everything around it: an API client, order signing, reconnects, keeping track of what is rest12Alucyd.hashnode.dev
MMads B. Cordes5d ago · 2 min readI changed PotPool's payout window from 6 hours to the whole roundPotPool is a 0% fee DigiByte mining pool. Its block rewards buy Megapot lottery tickets once a day. I built it, and this week I changed the rule that decides who shares in the winnings. What was wrongblog.madco.me
Ssolsmint6d ago · 9 min readSolana Alpenglow Upgrade: What 150ms Finality Means for Meme Coins and Token CreatorsSolana’s Alpenglow upgrade is now live. It activated on mainnet on October 21, 2026, at epoch 1064, replacing the network’s long-running TowerBFT consensus system with a new approach designed to bringsolsmintbuilder.hashnode.dev
WWalletverseOct 23 · 16 min readHow Crypto Wallets Detect and Display Token BalancesLearn how cryptocurrency wallets discover tokens, retrieve balances through blockchain RPC APIs and smart contracts, process token metadata, and keep asset information synchronized across multiple netwalletverseblog.hashnode.dev
