Fit test CP–01 Curated crossing
Java 1.20.4 vs 1.20.6
Cut / context
The dated record assigns protocol 765 to Java 1.20.4 and protocol 766 to Java 1.20.6. The unequal published values produce a Direct mismatch.
Release proximity does not establish extension or saved-data compatibility; those claims require separate release-specific evidence.
Measurement Published record
Side by side
| Fact | 1.20.4 | 1.20.6 |
|---|---|---|
| Published | 2023-12-07 | 2024-04-29 |
| Network protocol | 765 | 766 |
| Evidence state | published | published |
Fit result Deterministic protocol test
Handshake verdict
Direct mismatch
Protocol context
1.20.4 uses protocol 765; 1.20.6 uses protocol 766.
- The recorded protocols differ: 765 versus 766.
- Treat bridge support as Unknown until the server operator publishes dated, attributable evidence.
Uncertainty
A direct stock join does not match. A server-side translation layer may change the practical result, but version numbers alone cannot prove that one is installed.
Full records: 1.20.4 and1.20.6. Moving a world across this gap?Back up first.
Compiled 2026-07-14 from Mojang version manifest v2, minecraft.wiki protocol version record, PrismarineJS minecraft-data, ViaVersion documentation and repository.Curated comparison comparison-1.20.4-vs-1.20.6; last substantive change 2026-07-18; publication state published.