This story got a deeper rewrite as a four part series with diagrams and code. It starts at How do we remove watermarks. Part one ended with a locked recipe: detect the watermark three times, s...
This story got a deeper rewrite as a four part series with diagrams and code. It starts at How do we remove watermarks. This is part one of two about cleaning watermarks off scraped real estat...
My scraper pulled 113,998 real estate listing images into MinIO. Every one carries the host site’s watermark. I wanted them all clean at full resolution, and I wanted the true machine cost of that ...
Every Ethereum client exposes admin_peers, and every client that wants to be a drop in replacement for the reference client has to answer it the way the reference client does. The gap was one boole...
A Unity SDK for Starknet builds and signs transactions on device, in C#, under IL2CPP. When wallets started reporting INVALID_SIG on the network and failures to pay fees in STRK, the signature path...
Ethereum has two trace families. The debug family, debug_traceTransaction and debug_traceBlock, comes from the reference client. The trace family, trace_transaction and trace_block, comes from a di...
On Starknet, execution cost is counted in Cairo steps. Every program running on the network consumes steps, and every tool that wants to reason about cost, profiling, fee estimation, or block sched...
A node on a blockchain network is nothing but a promise about shapes. The spec defines the response format of every endpoint, tools are written against the spec, and the moment a node returns a fie...
The Tendermint paper is a choreography. Height by height, round by round, validators move through propose, prevote, and precommit, carrying locked values forward, respecting valid rounds, and only ...
Goerli was the last public proof of work testnet on Ethereum. It survived the merge, carried on as proof of stake, and then the community agreed on its retirement: Sepolia for application developer...