pub fn intialize_meta(
    &mut self,
    mint_auth_signer_seeds: &[&[&[u8]]; 1],
    params: &CreateBondingCurveParams,
) -> Result<()> {
    let data_v2 = DataV2 {
        name: params.name.clone(),
        symbol: params.symbol.clone(),
        uri: params.uri.clone(),  // No validation on URI format or content
        seller_fee_basis_points: 0,
        creators: None,
        collection: None,
        uses: None,
    };
    // ... metadata creation code ...
}
pub fn validate(&self, params: &CreateBondingCurveParams) -> Result<()> {
    // ... existing validations ...
    
    // Validate URI
    require!(
        params.uri.len() <= 200,  // Reasonable max length
        ContractError::InvalidMetadataUri
    );
    require!(
        params.uri.starts_with("http://") || 
        params.uri.starts_with("https://") || 
        params.uri.starts_with("ipfs://"),
        ContractError::InvalidMetadataUri
    );
    require!(
        params.uri.chars().all(|c| c.is_ascii()),
        ContractError::InvalidMetadataUri
    );
    
    Ok(())
}
