Saturday assorted links: Why does Bitcoin use energy? Bitcoin uses energy to build a better world. 🔗 bitcoinuses.energy --- What are Bitcoin covenants? Let’s explore how Bitcoin covenants, CheckTemplateVerify (CTV) and CheckTXHASH could make your Bitcoin transactions more powerful. 🔗 bitbox.swiss/blog/what-are-bitcoin-covenants --- csprng.xyz Request randomness from Cloudflare's edge servers 🔗 csprng.xyz --- Harnessing chaos in Cloudflare offices It has been about four years since we last wrote about LavaRand and during that time the story of how Cloudflare uses physical sources of entropy to add to the security of the Internet has continued to travel and be a source of interest to many. What was initially just a single species of physical entropy source – lava lamps – has grown and diversified. 🔗 blog.cloudflare.com/harnessing-office-chaos --- I spend £8,500 a year to live on a train – I've travelled 310,000 miles so far Lasse travels 600 miles a day throughout Germany aboard Deutsche Bahn trains. He travels first class, sleeps on night trains, has breakfast in DB lounges and takes showers in public swimming pools and leisure centres, all using his unlimited annual railcard. 🔗 metro.co.uk/2024/03/03/spend-8-500-a-year-live-a-train-20388001 --- Astro App Open source astrophotography tool for tracking planets and deep space objects: astro.sshh.io 🔗 github.com/sshh12/astro-app