HTTP integrity header defined in RFC 9530 that carries a checksum of the representation a response returns.
Found via: StackScope Discovery (Indie) 1 · StackScope Wider Web 1
Repr-Digest has been detected on 2 launches since first appearing in August 2026. Most recent detection: VNR — Verus Name Resolver, 2 days ago.
Share of new sites using Repr-Digest
Each dot is one launch day. Line is the 7-day rolling average. Chart starts at first detection.
Protocol leaders
| Tool | % of launches | % of category | ||
|---|---|---|---|---|
| #1 | – | HTTP/3 | 40.90% | 99.99% |
| #2 | – | Tor Onion Service | <0.01% | 0.01% |
| #3 | United States Semantic Standard | <0.01% | <0.01% | |
| #4 |
|
<0.01% | <0.01% | |
| #5 | ▼1 |
|
<0.01% | <0.01% |
| … | ||||
| #9 |
|
<0.01% | <0.01% | |
Percentages show adoption among indie launches: the share of all analysed launches, and of launches using any Protocol tool. All 15 in Protocol →
Recent launches we can show
1 of the 2 sites using Repr-Digest are product launches we list individually. The other 1 are sites we found crawling the wider web: they count towards the figures above, but we do not publish them one by one. How StackScope Discovery works
The StackScope API serves all 2 sites using Repr-Digest, filterable and exportable, from £15 a month.