The Van Wirdum Sjorsnado: Bitcoin Core 0.21 Supports Tor V3
- Satoshi Nakamoto

- Oct 16, 2020
- 1 min read

On this episode of The Van Wirdum Sjorsnado, Aaron and Sjors discuss one of the biggest releases in Bitcoin’s history: Bitcoin Core 0.21. Specifically, they dive into how this release will add support for Tor V3 addresses, an important development for preserving privacy, and explain what this means and why it matters. The pair also discuss how new Bitcoin nodes find existing Bitcoin nodes when they bootstrap to the network.
Listen to the audio version here:
Apple Podcasts: https://podcasts.apple.com/us/podcast/the-van-wirdum-sjorsnado/id1532957243#episodeGuid=33ac1be5-ac65-45cf-a47d-8b3a65d8f6b4
Spotify: https://open.spotify.com/episode/6nLPIOciXW8M6KXZJcl922?si=5s3pobbTQNC1z89caH2EhQ
Libsyn:http://nadobtc.btc.libsynpro.com/bitcoin-core-021-supports-tor-v3-nado-13
Helpful links for following along in the episode:
Tor V3 (Onion) address support in Bitcoin Core: https://github.com/bitcoin/bitcoin/pu…
The ADDRv2 message added in BIP 155 that allows nodes to gossip those new Tor addresses: https://github.com/bitcoin/bips/blob/…
DNS seeds and the bootstrap problem: https://stackoverflow.com/questions/4…
Specific topics covered:
How Tor works
Benefits of running a Bitcoin node behind Tor
Discussing how Bitcoin node gossip addresses
Explaining how DNS works
DNS is storing list of bitcoin nodes
Follow Aaron van Wirdum on Twitter: https://twitter.com/AaronvanW
Follow Sjors Provoost on Twitter: @provoost
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