feat: Implement a function to verify NIP01Event

onchain/src/bip340.cairo

@@ -9,6 +9,7 @@ use core::to_byte_array::AppendFormattedToByteArray;
 use core::traits::Into;
 use starknet::{secp256k1::{Secp256k1Point}, secp256_trait::{Secp256Trait, Secp256PointTrait}};
 
+
 const TWO_POW_32: u128 = 0x100000000;
 const TWO_POW_64: u128 = 0x10000000000000000;
 const TWO_POW_96: u128 = 0x1000000000000000000000000;
@@ -90,7 +91,7 @@ fn hash_challenge(rx: u256, px: u256, m: ByteArray) -> u256 {
 /// # Returns
 /// Returns `true` if the signature is valid for the given message and public key; otherwise,
 /// returns `false`.
-fn verify(px: u256, rx: u256, s: u256, m: ByteArray) -> bool {
+pub fn verify(px: u256, rx: u256, s: u256, m: ByteArray) -> bool {
     let n = Secp256Trait::<Secp256k1Point>::get_curve_size();
 
     if px >= p || rx >= p || s >= n {
@@ -124,6 +125,7 @@ fn verify(px: u256, rx: u256, s: u256, m: ByteArray) -> bool {
     !(Rx == 0 && Ry == 0) && Ry % 2 == 0 && Rx == rx
 }
 
+
 #[cfg(test)]
 mod tests {
     use core::clone::Clone;

onchain/src/lib.cairo

@@ -2,3 +2,4 @@ pub mod bech32;
 pub mod bip340;
 pub mod nostr_profile;
 pub mod social_pay_request;
+pub mod nip01;

onchain/src/nip01.cairo

@@ -1,5 +1,5 @@
 #[derive(Copy, Drop)]
-struct NIP01Event {
+pub struct NIP01Event {
     id: u256,
     pubkey: u256,
     created_at: u64,

onchain/src/social_pay_request.cairo

@@ -3,6 +3,8 @@ use core::to_byte_array::{FormatAsByteArray, AppendFormattedToByteArray};
 use core::fmt::{Display, Formatter, Error};
 
 use joyboy::nostr_profile::{NostrProfile, encode};
+use joyboy::bip340::{verify};
+use joyboy::nip01::{NIP01Event};
 
 type NostrKey = u256;