Nostr

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Description

Rust implementation of Nostr protocol.

If you're writing a typical Nostr client or bot, you may be interested in nostr-sdk.

Getting started

toml [dependencies] nostr = "0.21" tungstenite = { version = "0.18", features = ["rustls-tls-webpki-roots"]}

```rust,no_run use nostr::prelude::*; use tungstenite::{Message as WsMessage};

fn main() -> Result<()> { // Generate new random keys let my_keys = Keys::generate();

// or use your already existing
//
// From HEX or Bech32
// let my_keys = Keys::from_sk_str("hex-or-bech32-secret-key")?;

// Show bech32 public key
let bech32_pubkey: String = my_keys.public_key().to_bech32()?;
println!("Bech32 PubKey: {}", bech32_pubkey);

let metadata = Metadata::new()
    .name("username")
    .display_name("My Username")
    .about("Description")
    .picture(Url::parse("https://example.com/avatar.png")?)
    .banner(Url::parse("https://example.com/banner.png")?)
    .nip05("username@example.com")
    .lud16("yuki@getalby.com");

let event: Event = EventBuilder::set_metadata(metadata).to_event(&my_keys)?;

// New text note
let event: Event = EventBuilder::new_text_note("Hello from Nostr SDK", &[]).to_event(&my_keys)?;

// New POW text note
let event: Event = EventBuilder::new_text_note("My first POW text note from Nostr SDK", &[]).to_pow_event(&my_keys, 20)?;

// Connect to relay
let (mut socket, _) = tungstenite::connect("wss://relay.damus.io").expect("Can't connect to relay");

// Send msg
let msg = ClientMessage::new_event(event).as_json();
socket.write_message(WsMessage::Text(msg)).expect("Impossible to send message");

Ok(())

} ```

More examples can be found in the examples/ directory.

WASM

This crate supports the wasm32 targets.

On macOS you need to install llvm:

shell brew install llvm LLVM_PATH=$(brew --prefix llvm) AR="${LLVM_PATH}/bin/llvm-ar" CC="${LLVM_PATH}/bin/clang" cargo build --target wasm32-unknown-unknown

NOTE: Currently nip03 feature not support WASM.

Crate Feature Flags

The following crate feature flags are available:

| Feature | Default | Description | | ------------------- | :-----: | -------------------------------------------------------------------------------------------------------------------------- | | blocking | No | Needed to use NIP-05 and NIP-11 features in not async/await context | | vanity | No | Enable vanity public key mining module | | all-nips | Yes | Enable all NIPs | | nip03 | No | Enable NIP-03: OpenTimestamps Attestations for Events | | nip04 | Yes | Enable NIP-04: Encrypted Direct Message | | nip05 | Yes | Enable NIP-05: Mapping Nostr keys to DNS-based internet identifiers | | nip06 | Yes | Enable NIP-06: Basic key derivation from mnemonic seed phrase | | nip11 | Yes | Enable NIP-11: Relay Information Document | | nip19 | Yes | Enable NIP-19: bech32-encoded entities | | nip46 | Yes | Enable NIP-46: Nostr Connect |

Supported NIPs

| Supported | NIP | |:----------:| ---------------------------------------------------------------------------------------------------------------------------------- | | ✅ | 01 - Basic protocol flow description | | ✅ | 02 - Contact List and Petnames | | ✅ | 03 - OpenTimestamps Attestations for Events | | ✅ | 04 - Encrypted Direct Message | | ✅ | 05 - Mapping Nostr keys to DNS-based internet identifiers | | ✅ | 06 - Basic key derivation from mnemonic seed phrase | | ✅ | 09 - Event Deletion | | ✅ | 10 - Conventions for clients' use of e and p tags in text events | | ✅ | 11 - Relay Information Document | | ✅ | 12 - Generic Tag Queries | | ✅ | 13 - Proof of Work | | ✅ | 14 - Subject tag in text events | | ✅ | 15 - End of Stored Events Notice | | ✅ | 16 - Event Treatment | | ✅ | 18 - Reposts | | ✅ | 19 - bech32-encoded entities | | ✅ | 20 - Command Results | | ✅ | 23 - Long-form Content | | ✅ | 25 - Reactions | | ✅ | 26 - Delegated Event Signing | | ✅ | 28 - Public Chat | | ✅ | 33 - Parameterized Replaceable Events | | ✅ | 36 - Sensitive Content | | ✅ | 40 - Expiration Timestamp | | ✅ | 42 - Authentication of clients to relays | | ✅ | 45 - Event Counts | | ✅ | 46 - Nostr Connect | | ✅ | 50 - Keywords filter | | ✅ | 56 - Reporting | | ✅ | 65 - Relay List Metadata |

State

This library is in an ALPHA state, things that are implemented generally work but the API will change in breaking ways.

License

This project is distributed under the MIT software license - see the LICENSE file for details

Donations

⚡ Tips: https://getalby.com/p/yuki

⚡ Lightning Address: yuki@getalby.com