Can you tell me exactly where to put them?
I am sorry. I am still learning how to deal with Jason, but it is the best format for web.
This a valid json structure.
{
"10/09/20":[
{"total": 31115394,
"1": 23536754,
"3": 6025854,
"bc1q": 1552770}],
"12/11/20":[
{"total": 32467107,
"1": 24223336,
"3": 6402910,
"bc1q": 1840844}],
"13/11/20":[
{"total": 32478246,
"1": 24230032,
"3": 6400301,
"bc1q": 1847896}],
"01/12/20":
[{"total": 32690359,
"1": 24255508,
"3": 6445534,
"bc1q": 1989300}]
}
You can validate your json here
https://jsonformatter.curiousconcept.com/Note that this server doesn't have CORS enabled yet. Do you need that again?
Yes, please. I will do it after Christmas.

Can you make a blockdata.lastweek.txt file?
Because of the way I create the files, this wouldn't be easier than you keeping daily snapshots of
blockdata.lastday.txt.gz by yourself.
[/quote]
Sure. this will be a challenge to me. I will study how to do it . What platform do you use?can you point me some directions? I just use cpanel, I am a complete newbie with this.