Pseudocode

Sigil Models Expressed with Pseudocode in Rust Language

Rune + Time Claim (RTC) Validation

use serde::{Deserialize, Serialize};
use serde_json::Result;
use std::collections::HashMap;
use std::error::Error;
use std::fs::File;
use std::io::Read;
use reqwest;

// Define structs to represent the JSON metadata
#[derive(Serialize, Deserialize)]
struct CollectionInfo {
    artist_name: String,
    description: String,
    collection_total: u32,
    website: String,
}

#[derive(Serialize, Deserialize)]
struct AdditionalRune {
    rune_name: String,
    rune_id: String,
    quantity: u32,
}

#[derive(Serialize, Deserialize)]
struct SigilMetadata {
    protocol: String,
    rune_name: String,
    rune_id: String,
    rune_quantity: u32,
    rune_attainment: String,
    price_in_sats: Option<u64>,
    additional_runes: Vec<AdditionalRune>,
    start_block: u64,
    end_block: u64,
    collection_info: CollectionInfo,
    rune_action: String,
    rune_reuse: String,
    claim_mode: String,
    block_range: Option<BlockRange>,
}

#[derive(Serialize, Deserialize)]
struct BlockRange {
    start_block: u64,
    end_block: u64,
}

// Function to check the balance of a Rune token at a given address
fn check_rune_balance(address: &str, rune_id: &str) -> Result<u64, &'static str> {
    // Placeholder for actual implementation to fetch the balance
    Ok(1) // Assume the address has at least 1 Rune token
}

// Function to read the JSON metadata from the Ordinals protocol endpoint
async fn fetch_metadata_from_endpoint(endpoint_url: &str) -> Result<SigilMetadata, Box<dyn Error>> {
    let response = reqwest::get(endpoint_url).await?.text().await?;
    let metadata: SigilMetadata = serde_json::from_str(&response)?;
    Ok(metadata)
}

// Function to validate a sigil claim based on the metadata
fn validate_sigil_claim(
    sigil: &Sigil,
    reinscriptions: &[Reinscription],
    metadata: &SigilMetadata,
) -> Result<bool, &'static str> {
    // Check if the current block is within the allowed block range, if specified
    let current_block = get_current_block();
    if let Some(block_range) = &metadata.block_range {
        if current_block < block_range.start_block || current_block > block_range.end_block {
            return Ok(false);
        }
    }

    // Check the balance of the default Rune token at the sigil cast address
    let rune_balance = check_rune_balance(&sigil.cast_address, &metadata.rune_id)?;

    if rune_balance < metadata.rune_quantity {
        return Ok(false);
    }

    // Check balances of additional Runes, if required
    for additional_rune in &metadata.additional_runes {
        let additional_rune_balance = check_rune_balance(&sigil.cast_address, &additional_rune.rune_id)?;
        if additional_rune_balance < additional_rune.quantity {
            return Ok(false);
        }
    }

    // Validate the sigil based on the claim mode and reinscriptions
    if metadata.claim_mode == "reinscription" {
        // Iterate through the reinscriptions to find the relevant time window
        for i in 0..reinscriptions.len() - 1 {
            let current_reinscription = &reinscriptions[i];
            let next_reinscription = &reinscriptions[i + 1];

            if sigil.cast_time >= current_reinscription.time && sigil.cast_time < next_reinscription.time {
                return Ok(true);
            }
        }
    }

    Ok(false)
}

// Example usage
#[tokio::main]
async fn main() {
    // Endpoint URL to fetch the JSON metadata
    let endpoint_url = "https://ordinals-endpoint.example.com/metadata";

    let sigil = Sigil {
        cast_time: 1622548800, // Example timestamp
        cast_address: "1A1zP1eP5QGefi2DMPTfTL5SLmv7DivfNa".to_string(),
    };

    let reinscriptions = vec![
        Reinscription { time: 1622540000 }, // Example timestamp
        Reinscription { time: 1622550000 }, // Example timestamp
    ];

    match fetch_metadata_from_endpoint(endpoint_url).await {
        Ok(metadata) => {
            match validate_sigil_claim(&sigil, &reinscriptions, &metadata) {
                Ok(valid) => {
                    if valid {
                        println!("The sigil is valid.");
                    } else {
                        println!("The sigil is not valid.");
                    }
                }
                Err(e) => println!("Error validating sigil: {}", e),
            }
        }
        Err(e) => println!("Error fetching metadata: {}", e),
    }
}

// Placeholder function to get the current block number
fn get_current_block() -> u64 {
    // This would normally fetch the current block number from the blockchain
    840100
}

// Define a struct to represent a Sigil
struct Sigil {
    cast_time: u64, // Timestamp of when the sigil was cast
    cast_address: String, // Bitcoin address from which the sigil was cast
}

// Define a struct to represent a Reinscription
struct Reinscription {
    time: u64, // Timestamp of the reinscription
}