Fast Confirmation Rule - #4747

Merged

jtraglia merged 110 commits into

ethereum:masterfrom

mkalinin:fast-conf-rule

Apr 16, 2026

Commits on Nov 18, 2025

Refactor get_weight and get_proposer_score
mkalinin
committed
69a2af8
Add get_latest_message_epoch
mkalinin
committed
82fac77
Introduce FCR
mkalinin
committed
3876169
Switch safe block to store.confirmed_root
mkalinin
committed
ebbbe3b

Commits on Nov 27, 2025

Merge remote-tracking branch 'origin/master' into fast-conf-rule
mkalinin
committed
673c5a5

Commits on Dec 8, 2025

Explicitly pass shuffling_source, add reacher comments
mkalinin
committed
617d078
Clarify when algorithm can be run
mkalinin
committed
85e23a9
Polish naming
mkalinin
committed
419212d

Commits on Dec 9, 2025

Specify deps when algo is called in the middle of a slot
mkalinin
committed
2078ce2

Commits on Dec 10, 2025

Move reconfirmation into a separate method
mkalinin
committed
116e3da
Refactor FCR variables update
mkalinin
committed
68de07f

Commits on Dec 11, 2025

Refactor chkp variables used by fcr
mkalinin
committed
558aabc
Move state accesses to separate functions
mkalinin
committed
80389fc
Fix wording
mkalinin
committed
98dad23
Bring reconfirmation back to get_latest_confirmed
mkalinin
committed
168b948

Commits on Dec 18, 2025

Rename fast-confirmation-rule.md to fast-confirmation.md
mkalinin
committed
0ed377e

Commits on Dec 22, 2025

Add basic test case
mkalinin
committed
a1e74c5

Commits on Jan 12, 2026

tests on revert to finality + restart
luca-zanolini
committed
14480b7
add test failure restart with 50-50 split
luca-zanolini
committed
1838636

Commits on Jan 16, 2026

Introduce FCRTest helper
mkalinin
committed
e05ca68
Pass a number of validators to the test
mkalinin
committed
e73d61b
Merge branch 'master' into fast-conf-rule
jtraglia
authored
40bff81

Commits on Jan 19, 2026

Commits on Jan 20, 2026

Commits on Jan 22, 2026

Commits on Jan 25, 2026

Add one more restart condition
mkalinin
committed
8bafa43

Commits on Jan 26, 2026

Fix is_ancestor description
mkalinin
authored
31af53b

Commits on Jan 27, 2026

polished tests
luca-zanolini
committed
33ebdd6
test update_fast_confirmation_variables
luca-zanolini
committed
0a1c502

Commits on Jan 28, 2026

more tests on revert to finality and empty slots
luca-zanolini
committed
56ac225

Commits on Jan 29, 2026

Add 18 out of 24 FCR curr epoch tests
mkalinin
committed
aadd5bb
attempt to test b_cand \nsucceq gu
luca-zanolini
committed
f9f066c

Commits on Jan 30, 2026

Test that FCR resets when bcand \nsucceq GU
luca-zanolini
committed
66286b4

Commits on Feb 2, 2026

Finish CurrentEpoch tests
mkalinin
committed
bb617f0
Merge mkalinin/fast-conf-rule
luca-zanolini
committed
caaec29

Commits on Feb 3, 2026

Use debug_print in tests
jtraglia
committed
6c4c408
restart from GU
luca-zanolini
committed
67bd8d1

Commits on Feb 4, 2026

Merge mkalinin/fast-conf-rule
luca-zanolini
committed
e9d5c1a
created files for different tests + refactoring
luca-zanolini
committed
47adc4a

Commits on Feb 5, 2026

Commits on Feb 11, 2026

Refactor estimate_committee_weight_between_slots
mkalinin
committed
4bce66b
Merge pull request #23 from mkalinin/refactor-estimate-committee-weight
mkalinin
authored
4b85220
removed unnecessary fork in reconfirmation-failure test
luca-zanolini
committed
ce6310e
changed condition on slashing
luca-zanolini
committed
38b387d
Merge pull request #22 from luca-zanolini/luca/fcr-tests
mkalinin
authored
20f3ad8
FCR tests refactor (#24)
mkalinin
authored
5d745f1

Commits on Feb 17, 2026

Do not yield a step for withheld attestations
mkalinin
committed
4b92bde

Commits on Feb 23, 2026

Fast Confirmation: Update current_epoch_observed_justified_checkpoint at an epoch start (#25)

mkalinin
and
luca-zanolini
authored
f82ebba
Fix tests
mkalinin
committed
450a800

Commits on Feb 24, 2026

Fast Confirmation: Trigger algorithm at after a block or at the attestation deadline (#26)
mkalinin
authored
50e25b0

Commits on Feb 25, 2026

Replace target_state with head_state (#27)
mkalinin
authored
f4183db

Commits on Mar 3, 2026

Fast confirmation: Fix is_confirmed_chain_safe when epoch(GU) < prev_epoch (#29)
mkalinin
authored
1245827

Commits on Mar 6, 2026

Add debug output of the FCR state
mkalinin
committed
e3be6ba

Commits on Mar 9, 2026

Refactor FCRTest and SystemRun
mkalinin
committed
3b71621

Commits on Mar 10, 2026

Add a few previous epoch tests
mkalinin
committed
8df182d

Commits on Mar 11, 2026

Commits on Mar 16, 2026

Commits on Mar 17, 2026

Polish an underflow guard
mkalinin
committed
895c4a0

Commits on Mar 19, 2026

Initial portion of tests
mkalinin
committed
e186064

Commits on Mar 22, 2026

Add the rest of prev_epoch tests
mkalinin
committed
8241c1d

Commits on Mar 23, 2026

Fix test name
mkalinin
committed
9215a2e

Commits on Mar 25, 2026

State that update_fast_confirmation_variables must be called once
mkalinin
committed
fc06b37
Handle slashings with 0 validators to slash
mkalinin
committed
604a638

Commits on Mar 31, 2026

Fix tests for electra and capella
mkalinin
committed
474a118

Commits on Apr 6, 2026

Apply suggestions by @0xMushow

mkalinin
and
0xMushow
authored
22ca186
Fix Altair and Bellatrix tests
mkalinin
committed
e603833

Commits on Apr 8, 2026

Commits on Apr 9, 2026

Commits on Apr 10, 2026

Apply suggestions by @jtraglia

mkalinin
and
jtraglia
authored
9cac2a1
Fix formatting
mkalinin
committed
e1a3974
Rename get_fast_confirmation_store in safe_block.md
mkalinin
committed
2ae614b
Expand remaining contractions
jtraglia
committed
a982673
Delete two unnecessary blank lines
jtraglia
committed
2d83960
Merge branch 'master' into fast-conf-rule
jtraglia
authored
5d47b14

Commits on Apr 12, 2026

Replace get_safe_block_root with retrieve_fast_confirmed_root
mkalinin
committed
f25aa44

Commits on Apr 13, 2026

Commits on Apr 14, 2026

Merge branch 'master' into fast-conf-rule
mkalinin
authored
090059a
Replace store with fcr_store in comments
mkalinin
committed
eaa7262

Commits on Apr 15, 2026

Apply suggestions by @0xMushow

mkalinin
and
0xMushow
authored
c5b07a6
Introduce fast confirmation test format

Mikhail
authored and
Mikhail
committed
c68af8a
Apply suggestions from code review
mkalinin
committed
2accf75
Expand FCR test runs on Fulu
mkalinin
committed
c36a868
Fix typo
mkalinin
committed
a688097

Commits on Apr 16, 2026

Revert changes to fork choice test format
mkalinin
committed
f6efb34
Only run FCR tests in generator mode
jtraglia
committed
a318038
Merge branch 'master' into fast-conf-rule
jtraglia
authored
5a58813