How to Test Blockchain Applications

Rhian Lewis

Technology Consultant

Reading Time: < 1 minuteBlockchain technology is best known for Bitcoin and other cryptocurrencies. It is being investigated for use in many different areas, from payments to supply-chain logistics and energy generation. But testing decentralised applications, particularly on public blockchains, requires testers to think in a completely different way. How do you mitigate against the risk of bugs when you are deploying to an immutable data structure? How can you replicate a production environment that is spread across thousands of different nodes of varying performance and specification? How can you future-proof yourself against changes in the open-source software you are…....

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About Me!

Rhian Lewis is a software engineer who is the co-developer of altcoin portfolio tracker CountMyCrypto and is also a consultant specialising in test automation. She is also the co-host of London Bitcoin Women, which she founded with a friend in 2014. She has a BSc in Economics from UCL and is a former digital journalist at The Times. She is a regular conference speaker and educator on blockchain technology, cryptocurrency and cryptoassets, and writes about blockchain technology at

Twitter: @rhian_is

She is an instructor for the B9Lab Ethereum QA Engineer course. Link HERE

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