How do I convert a Tai64 timestamp?

sarah · February 17, 2023, 10:16pm

You can convert a Tai64 timestamp to a unix timestamp using the function below:

function convertTime(num: string){
  return BigInt(num) - BigInt(Math.pow(2, 62)) - BigInt(10);
}

You can also use this converter website: https://tai64-timestamp-converter.vercel.app/

mindtree · February 17, 2023, 11:29pm

For those looking to do the conversion in Rust using a response received by the SDK, here’s how we do it in the forc-submit command.

github.com

FuelLabs/sway/blob/f05ecaf2de1ebe3b3da80ecd8eb6053a84145cf4/forc-plugins/forc-client/src/op/submit.rs#L58


      
          use std::fmt::Write;
          match status {
              TransactionStatus::Submitted { submitted_at } => {
                  writeln!(s, "Transaction Submitted at {:?}", submitted_at.0)?;
              }
              TransactionStatus::Success {
                  block_id,
                  time,
                  program_state,
              } => {
                  let utc = chrono::Utc.timestamp_nanos(time.to_unix());
                  writeln!(s, "Transaction Succeeded")?;
                  writeln!(s, "  Block ID:      {block_id}")?;
                  writeln!(s, "  Time:          {utc}",)?;
                  writeln!(s, "  Program State: {program_state:?}")?;
              }
              TransactionStatus::SqueezedOut { reason } => {
                  writeln!(s, "Transaction Squeezed Out: {reason}")?;
              }
              TransactionStatus::Failure {
                  block_id,

This uses the chrono crate to convert the Tai64 representation to a more human readable output.

sway · March 5, 2023, 6:37am

Does it work right? I have tried to convert 4611686020105360828 to unix with this function and it gave me 1677972914 ( which is Tue Jan 20 1970 ) , and I went to this vercel app to check if there is same, and yes, Date format is right, but unix timestamp is wrong

sarah · March 5, 2023, 5:53pm

I’m a little confused what you mean. How did you get Tue Jan 20 1970?

sway · March 5, 2023, 11:04pm

i have used your formul for in js code by passing 4611686020105360828 as argument

sarah · March 5, 2023, 11:57pm

Ahh thanks. You just have to multiply by 1000 first. You can see the full code here: tai64-timestamp-converter/App.tsx at main · sarahschwartz/tai64-timestamp-converter · GitHub