Topics by category
Short definitions for technical terms that show up in our blog posts.
Bitcoin
- AssumeUTXO
A Bitcoin Core feature that lets a new node start from a hashed UTXO snapshot instead of rebuilding the set from genesis.
- BIP 324
An encrypted, authenticated transport for the Bitcoin peer-to-peer protocol, replacing the older plaintext format.
- Erlay
A bandwidth-efficient transaction relay protocol for Bitcoin that replaces flooding with set reconciliation between peers.
- Miniscript
A structured language for Bitcoin scripts that is easy to analyze, compose, and sign with a generic wallet.
- OP_CTV
A proposed Bitcoin opcode that lets a transaction commit in advance to how its coins will be spent.
- PSBT
A standard file format for a Bitcoin transaction that is still being constructed or signed, used by nearly every modern wallet and coordinator.
- Silent Payments
A way to receive Bitcoin to a reusable static address without reusing on-chain addresses.
- Taproot
The 2021 Bitcoin soft fork that introduced Schnorr signatures, a new output type, and a new script system, all under a single on-chain footprint.
Lightning
- Blinded paths
A Lightning feature where the receiver supplies a partial route with hop identities encrypted, so the sender never learns who the destination is.
- BOLT 12
A Lightning specification for reusable payment offers that replace one-shot invoices.
- LDK
A Rust library for embedding a Lightning node inside a wallet or other application.
- Splicing
Resizing a Lightning channel without closing it by adding or removing funds in a single on-chain transaction.
Privacy
- GrapheneOS
A hardened, privacy-focused Android distribution for Pixel phones.
- Payjoin
A cooperative Bitcoin transaction where the receiver also contributes an input, breaking the common-input heuristic, for increased on-chain privacy.
- Tor
An anonymity network that routes traffic through three-hop circuits to hide the link between sender and destination.
Ecash
- Cashu
A Chaumian ecash protocol for Bitcoin, where a mint issues blinded tokens backed by sats on Lightning.
- Ecash
Digital bearer tokens issued by a mint using blind signatures, so that spending and redeeming cannot be linked to the original withdrawal.
- Fedimint
A federated Chaumian ecash system where a group of guardians jointly custody the underlying Bitcoin.
Mining
- Stratum V2
A next-generation Bitcoin mining protocol that lets individual miners build their own block templates.
Nostr
- NIPs
Nostr Implementation Possibilities: the numbered specifications that define how clients and relays behave.
- Nostr
An open protocol for decentralized social networks based on signed events and a set of interchangeable relays.
- Nostr Wallet Connect
A Nostr protocol that lets a client pay and receive Lightning payments through a user-controlled wallet, using relays as the transport.
- Private DMs
The current standard for private direct messages on Nostr, using gift wrap to hide sender, receiver, and metadata from relays.
- Relays
The small servers that store and forward signed events on Nostr.
- Remote signing
A Nostr protocol for signing events with a key that lives on a different device or service than the client composing the event.
- Zaps
Public Lightning payments attached to a Nostr event, recorded on relays as signed receipts that clients render under the original note.
Scaling
- Ark
A second-layer Bitcoin protocol that uses a shared UTXO and a coordinator to let users transact off-chain without opening channels.