#finance #identifier #equity #stock

bin+lib isin

Support for creating and validating ISINs

3 releases

0.1.19 Jun 26, 2025
0.1.18 Oct 15, 2023
0.1.16 Jun 8, 2023
0.1.14 Feb 10, 2023
0.1.8 Mar 22, 2021

#246 in Parser implementations

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10,474 downloads per month
Used in 14 crates (3 directly)

MIT/Apache

56KB
1K SLoC

isin

An ISIN type for working with validated International Security Identifiers (ISINs) as defined in ISO 6166.

The checksum calculation uses a table-driven algorithm to minimize overhead vs. a direct translation of the formula definition.

This crate is part of the Financial Identifiers series:

  • CIK: Central Index Key (SEC EDGAR)
  • CUSIP: Committee on Uniform Security Identification Procedures (ANSI X9.6-2020)
  • ISIN: International Securities Identification Number (ISO 6166:2021)
  • LEI: Legal Entity Identifier (ISO 17442:2020)

Usage

Add this to your Cargo.toml:

[dependencies]
isin = "0.1"

Example

use isin;
let isin_string = "US0378331005";
match isin::parse(isin_string) {
    Ok(isin) => {
        println!("Parsed ISIN: {}", isin.to_string()); // "US0378331005"
        println!("  Prefix: {}", isin.prefix()); // "US"
        println!("  Basic code: {}", isin.basic_code()); // "037833100"
        println!("  Check digit: {}", isin.check_digit()); // '5'
    }
    Err(err) => panic!("Unable to parse ISIN {}: {}", isin_string, err),
}

License

Licensed under either of

at your option.

Contribution

Unless you explicitly state otherwise, any contribution intentionally submitted for inclusion in the work by you, as defined in the Apache-2.0 license, shall be dual licensed as above, without any additional terms or conditions.

Dependencies

~0–330KB