I know this post was two years and it is still useful even today for those one what wants to learn DID and Ion.
One question is about the DID registration. I use the sample code from https://github.com/decentralized-identity/ion-tools
// Generate and publish create request to an ION node
let createRequest = await did.generateRequest(0);
let anchorResponse = await anchor(createRequest);
console.log(anchorRequest)
in my local, and the execution succeeds. It print did document.
Previously I am capable of query the DID document via the DID URI embeded in the print log. but one day, i am no longer able for this, all are 404.
I also post his question in https://stackoverflow.com/questions/76574466/unable-to-query-did-document-from-register-after-creation
with more information and if you can have tips or suggestion, it would be helpful. Thanks in advance.