Thanks for illustration! Just check if my understanding is correct. Based on the example above (6 transactions), if Charlie is to approve Alice has 10 as she claims, he needs to trace,

Tx #3 that Alice was given 8 iotas by Genesis (checked)

Tx #6 that Alice was given 2 iotas by Bob, and then Tx #2 that Bob was given 2 iotas by Genesis (checked)

That proves that Alice can spend 10 iotas as all are chased back to Genesis.

Thanks again!

Written by

Happy to share what I learn on blockchain. Visit http://www.ledgertech.biz/kcarticles.html for my works. or reach me on https://www.linkedin.com/in/ktam1/.

Get the Medium app

A button that says 'Download on the App Store', and if clicked it will lead you to the iOS App store
A button that says 'Get it on, Google Play', and if clicked it will lead you to the Google Play store