SEC proposes limited self-custody for advisers
A new SEC proposal would let advisers hold client crypto only when no qualified custodian is available. It also creates a route for state trust companies.
Understand Bitcoin. Put it into practice.
Bitcoin education, practical guides and sourced news. Explore wallets, self-custody, Lightning and the people building the ecosystem.
The library
Browse everythingExplainers
20What a thing is, assuming nothing. Start here if the words are new.
- What is a PSBT?
- A Bitcoin signed message proves less than it sounds
- A Bitcoin wallet needs more than its keys
- What is a coinbase transaction?
Guides
16Sit down and do one thing, with a way to check it worked.
- Verify a Taproot address checksum with Python
- How to create and check a Bitcoin payment request
- Build and verify a Bitcoin Merkle proof with Python
- How to verify and install Sparrow Wallet
Deep Dives
9The mechanism underneath, with the spec and the constants.
- The 2018 hash war, and what hashrate cannot decide
- Bitcoin has no balances, only unspent outputs
- How Bitcoin holds a ten-minute block interval
- The Lightning implementations, and how they differ
Features
13An argument, with the strongest version of the other side.
- The block size war, and what it settled
- Nobody is in charge of Bitcoin, which is the hard part
- Why You Should Accept Bitcoin at Your Beachfront Business
- Texas passes a Bitcoin reserve law: what changes