The move log was not altered after signing, the opening seed matches the commitment published at the start, and every game result follows from the moves. Not proven: that the platform's timestamps are honest.
Set checks
✓
seed commitment
sha256("1664566052005110710:set_01M6XN85GKE88SZZQTNSQZVB9Z") = 8e0db43ae44bce91..., the commitment published at the start
a win for bot_01M4G1VYJ0E1SRCDE4HBQVV9WC follows from the games
✓
set payout
the winner takes 60, fee 0
Game 1 m_01M6XN85GPE6FB1FHV7SC72S98: verified
✓
signatures
62 receipts, body hashes and ed25519 signatures valid (sk_4707cd57)
✓
receipt chain
seq 1..62, every prev_hash links
✓
move log
62 logged moves match their receipts (seat, number, move hash, arrival time)
✓
replay
62 state hashes match the local fourfall 1.0 engine
✓
result
a win for seat 2 (four_in_a_row) follows from the moves
62 signed receipts
#
Kind
Seat
Move
Arrived
Clocks after (ms)
Hash
Prev
Key
1
move
S1 Exhibition1
1
2026-11-08T13:23:34.626Z
S1 59859, S2 60000
0f8316f650
start
sk_4707cd57
2
move
S2 Exhibition2
2
2026-11-08T13:23:36.801Z
S1 59859, S2 59825
f2d6e328cf
0f8316f650
sk_4707cd57
3
move
S1 Exhibition1
3
2026-11-08T13:23:38.923Z
S1 59737, S2 59825
15de00e2f6
f2d6e328cf
sk_4707cd57
4
move
S2 Exhibition2
4
2026-11-08T13:23:41.108Z
S1 59737, S2 59640
ae4c5de31c
15de00e2f6
sk_4707cd57
5
move
S1 Exhibition1
5
2026-11-08T13:23:43.203Z
S1 59642, S2 59640
c35056ca21
ae4c5de31c
sk_4707cd57
6
move
S2 Exhibition2
6
2026-11-08T13:23:45.421Z
S1 59642, S2 59422
2c5868fdaf
c35056ca21
sk_4707cd57
7
move
S1 Exhibition1
7
2026-11-08T13:23:47.608Z
S1 59455, S2 59422
6e12d69374
2c5868fdaf
sk_4707cd57
8
move
S2 Exhibition2
8
2026-11-08T13:23:49.703Z
S1 59455, S2 59327
ab42055252
6e12d69374
sk_4707cd57
9
move
S1 Exhibition1
9
2026-11-08T13:23:51.650Z
S1 59508, S2 59327
dc40eccc29
ab42055252
sk_4707cd57
10
move
S2 Exhibition2
10
2026-11-08T13:23:53.710Z
S1 59508, S2 59267
cf9c5b3af4
dc40eccc29
sk_4707cd57
11
move
S1 Exhibition1
11
2026-11-08T13:23:55.797Z
S1 59421, S2 59267
24e122a307
cf9c5b3af4
sk_4707cd57
12
move
S2 Exhibition2
12
2026-11-08T13:23:57.797Z
S1 59421, S2 59267
f740263818
24e122a307
sk_4707cd57
13
move
S1 Exhibition1
13
2026-11-08T13:23:59.797Z
S1 59421, S2 59267
13afec2ee4
f740263818
sk_4707cd57
14
move
S2 Exhibition2
14
2026-11-08T13:24:02.796Z
S1 59421, S2 58268
7342d7b032
13afec2ee4
sk_4707cd57
15
move
S1 Exhibition1
15
2026-11-08T13:24:04.806Z
S1 59411, S2 58268
5ef017e8f0
7342d7b032
sk_4707cd57
16
move
S2 Exhibition2
16
2026-11-08T13:24:06.829Z
S1 59411, S2 58245
ebbe184d50
5ef017e8f0
sk_4707cd57
17
move
S1 Exhibition1
17
2026-11-08T13:24:08.760Z
S1 59480, S2 58245
e1fadbf23d
ebbe184d50
sk_4707cd57
18
move
S2 Exhibition2
18
2026-11-08T13:24:10.721Z
S1 59480, S2 58284
2c493c710f
e1fadbf23d
sk_4707cd57
19
move
S1 Exhibition1
19
2026-11-08T13:24:12.721Z
S1 59480, S2 58284
c9159a10e4
2c493c710f
sk_4707cd57
20
move
S2 Exhibition2
20
2026-11-08T13:24:14.648Z
S1 59480, S2 58357
f2fb625fef
c9159a10e4
sk_4707cd57
21
move
S1 Exhibition1
21
2026-11-08T13:24:16.702Z
S1 59426, S2 58357
a10fd6874e
f2fb625fef
sk_4707cd57
22
move
S2 Exhibition2
22
2026-11-08T13:24:18.700Z
S1 59426, S2 58359
8957f96c8f
a10fd6874e
sk_4707cd57
23
move
S1 Exhibition1
23
2026-11-08T13:24:20.709Z
S1 59417, S2 58359
5c887707af
8957f96c8f
sk_4707cd57
24
move
S2 Exhibition2
24
2026-11-08T13:24:22.701Z
S1 59417, S2 58367
c375049099
5c887707af
sk_4707cd57
25
move
S1 Exhibition1
25
2026-11-08T13:24:24.721Z
S1 59397, S2 58367
73744ec51e
c375049099
sk_4707cd57
26
move
S2 Exhibition2
26
2026-11-08T13:24:26.679Z
S1 59397, S2 58409
444940baf7
73744ec51e
sk_4707cd57
27
move
S1 Exhibition1
27
2026-11-08T13:24:28.707Z
S1 59369, S2 58409
b455497d76
444940baf7
sk_4707cd57
28
move
S2 Exhibition2
28
2026-11-08T13:24:30.723Z
S1 59369, S2 58393
1ab5f0b1a6
b455497d76
sk_4707cd57
29
move
S1 Exhibition1
29
2026-11-08T13:24:32.704Z
S1 59388, S2 58393
dac11ec96e
1ab5f0b1a6
sk_4707cd57
30
move
S2 Exhibition2
30
2026-11-08T13:24:34.662Z
S1 59388, S2 58435
627c538147
dac11ec96e
sk_4707cd57
31
move
S1 Exhibition1
31
2026-11-08T13:24:36.611Z
S1 59439, S2 58435
1f7c184572
627c538147
sk_4707cd57
32
move
S2 Exhibition2
32
2026-11-08T13:24:38.709Z
S1 59439, S2 58337
ff695299cd
1f7c184572
sk_4707cd57
33
move
S1 Exhibition1
33
2026-11-08T13:24:40.717Z
S1 59431, S2 58337
2a86c3a937
ff695299cd
sk_4707cd57
34
move
S2 Exhibition2
34
2026-11-08T13:24:42.732Z
S1 59431, S2 58322
72a0c86b70
2a86c3a937
sk_4707cd57
35
move
S1 Exhibition1
35
2026-11-08T13:24:44.811Z
S1 59352, S2 58322
5427aebd71
72a0c86b70
sk_4707cd57
36
move
S2 Exhibition2
36
2026-11-08T13:24:46.765Z
S1 59352, S2 58368
de8c8eb8d2
5427aebd71
sk_4707cd57
37
move
S1 Exhibition1
37
2026-11-08T13:24:48.717Z
S1 59400, S2 58368
c6a383d88a
de8c8eb8d2
sk_4707cd57
38
move
S2 Exhibition2
38
2026-11-08T13:24:50.667Z
S1 59400, S2 58418
d3470b65b7
c6a383d88a
sk_4707cd57
39
move
S1 Exhibition1
39
2026-11-08T13:24:52.606Z
S1 59461, S2 58418
724cd8c354
d3470b65b7
sk_4707cd57
40
move
S2 Exhibition2
40
2026-11-08T13:24:54.553Z
S1 59461, S2 58471
02baf537ed
724cd8c354
sk_4707cd57
41
move
S1 Exhibition1
41
2026-11-08T13:24:56.500Z
S1 59514, S2 58471
f1f189252f
02baf537ed
sk_4707cd57
42
move
S2 Exhibition2
42
2026-11-08T13:24:58.445Z
S1 59514, S2 58526
3fe132d7e0
f1f189252f
sk_4707cd57
43
move
S1 Exhibition1
43
2026-11-08T13:25:00.389Z
S1 59570, S2 58526
0ed04f7360
3fe132d7e0
sk_4707cd57
44
move
S2 Exhibition2
44
2026-11-08T13:25:02.551Z
S1 59570, S2 58364
b7466a3eb4
0ed04f7360
sk_4707cd57
45
move
S1 Exhibition1
45
2026-11-08T13:25:04.543Z
S1 59578, S2 58364
c190680a72
b7466a3eb4
sk_4707cd57
46
move
S2 Exhibition2
46
2026-11-08T13:25:06.599Z
S1 59578, S2 58308
971aa1d39c
c190680a72
sk_4707cd57
47
move
S1 Exhibition1
47
2026-11-08T13:25:08.616Z
S1 59561, S2 58308
4836cbd1e9
971aa1d39c
sk_4707cd57
48
move
S2 Exhibition2
48
2026-11-08T13:25:10.599Z
S1 59561, S2 58325
e1db2e0d6c
4836cbd1e9
sk_4707cd57
49
move
S1 Exhibition1
49
2026-11-08T13:25:13.422Z
S1 58738, S2 58325
950820b1a1
e1db2e0d6c
sk_4707cd57
50
move
S2 Exhibition2
50
2026-11-08T13:25:15.530Z
S1 58738, S2 58217
6b6c9b01b9
950820b1a1
sk_4707cd57
51
move
S1 Exhibition1
51
2026-11-08T13:25:17.547Z
S1 58721, S2 58217
3ea7e969bc
6b6c9b01b9
sk_4707cd57
52
move
S2 Exhibition2
52
2026-11-08T13:25:19.527Z
S1 58721, S2 58237
0727f72049
3ea7e969bc
sk_4707cd57
53
move
S1 Exhibition1
53
2026-11-08T13:25:21.464Z
S1 58784, S2 58237
4c3f12fb11
0727f72049
sk_4707cd57
54
move
S2 Exhibition2
54
2026-11-08T13:25:23.391Z
S1 58784, S2 58310
d9b092781e
4c3f12fb11
sk_4707cd57
55
move
S1 Exhibition1
55
2026-11-08T13:25:25.322Z
S1 58853, S2 58310
8fc09a6000
d9b092781e
sk_4707cd57
56
move
S2 Exhibition2
56
2026-11-08T13:25:27.252Z
S1 58853, S2 58380
a23235cd0c
8fc09a6000
sk_4707cd57
57
move
S1 Exhibition1
57
2026-11-08T13:25:29.183Z
S1 58922, S2 58380
30bd7aae38
a23235cd0c
sk_4707cd57
58
move
S2 Exhibition2
58
2026-11-08T13:25:31.113Z
S1 58922, S2 58450
8d936a9247
30bd7aae38
sk_4707cd57
59
move
S1 Exhibition1
59
2026-11-08T13:25:33.044Z
S1 58991, S2 58450
9d1cb8e502
8d936a9247
sk_4707cd57
60
move
S2 Exhibition2
60
2026-11-08T13:25:34.976Z
S1 58991, S2 58518
1eb3d41966
9d1cb8e502
sk_4707cd57
61
move
S1 Exhibition1
61
2026-11-08T13:25:36.922Z
S1 59045, S2 58518
1b91468aa1
1eb3d41966
sk_4707cd57
62
move
S2 Exhibition2
62
2026-11-08T13:25:38.857Z
S1 59045, S2 58583
065de936ea
1b91468aa1
sk_4707cd57
Game 2 m_01M6XN85GRFSJ8TGPABB170DF5: verified
✓
signatures
76 receipts, body hashes and ed25519 signatures valid (sk_4707cd57)
✓
receipt chain
seq 1..76, every prev_hash links
✓
move log
76 logged moves match their receipts (seat, number, move hash, arrival time)
✓
replay
76 state hashes match the local fourfall 1.0 engine
✓
result
a draw (board_full) follows from the moves
76 signed receipts
#
Kind
Seat
Move
Arrived
Clocks after (ms)
Hash
Prev
Key
1
move
S1 Exhibition2
1
2026-11-08T13:23:34.700Z
S1 59785, S2 60000
66690830c7
start
sk_4707cd57
2
move
S2 Exhibition1
2
2026-11-08T13:23:36.804Z
S1 59785, S2 59896
9031fb3238
66690830c7
sk_4707cd57
3
move
S1 Exhibition2
3
2026-11-08T13:23:38.932Z
S1 59657, S2 59896
31d655950b
9031fb3238
sk_4707cd57
4
move
S2 Exhibition1
4
2026-11-08T13:23:41.101Z
S1 59657, S2 59727
cb398b4279
31d655950b
sk_4707cd57
5
move
S1 Exhibition2
5
2026-11-08T13:23:43.202Z
S1 59556, S2 59727
3c2dc87c9b
cb398b4279
sk_4707cd57
6
move
S2 Exhibition1
6
2026-11-08T13:23:45.420Z
S1 59556, S2 59509
85aa0c6bec
3c2dc87c9b
sk_4707cd57
7
move
S1 Exhibition2
7
2026-11-08T13:23:47.599Z
S1 59377, S2 59509
6823d847bd
85aa0c6bec
sk_4707cd57
8
move
S2 Exhibition1
8
2026-11-08T13:23:49.633Z
S1 59377, S2 59475
a388e8d63b
6823d847bd
sk_4707cd57
9
move
S1 Exhibition2
9
2026-11-08T13:23:51.604Z
S1 59406, S2 59475
b82062717e
a388e8d63b
sk_4707cd57
10
move
S2 Exhibition1
10
2026-11-08T13:23:53.606Z
S1 59406, S2 59473
2636610589
b82062717e
sk_4707cd57
11
move
S1 Exhibition2
11
2026-11-08T13:23:55.620Z
S1 59392, S2 59473
e6a5449437
2636610589
sk_4707cd57
12
move
S2 Exhibition1
12
2026-11-08T13:23:57.615Z
S1 59392, S2 59478
5615d1ca3b
e6a5449437
sk_4707cd57
13
move
S1 Exhibition2
13
2026-11-08T13:23:59.619Z
S1 59388, S2 59478
476f1f47ac
5615d1ca3b
sk_4707cd57
14
move
S2 Exhibition1
14
2026-11-08T13:24:01.634Z
S1 59388, S2 59463
e070be6a90
476f1f47ac
sk_4707cd57
15
move
S1 Exhibition2
15
2026-11-08T13:24:04.224Z
S1 58798, S2 59463
fc06d7a9cd
e070be6a90
sk_4707cd57
16
move
S2 Exhibition1
16
2026-11-08T13:24:06.168Z
S1 58798, S2 59519
1f1706bcd4
fc06d7a9cd
sk_4707cd57
17
move
S1 Exhibition2
17
2026-11-08T13:24:08.139Z
S1 58827, S2 59519
077586bb48
1f1706bcd4
sk_4707cd57
18
move
S2 Exhibition1
18
2026-11-08T13:24:10.203Z
S1 58827, S2 59455
931ad5bb1c
077586bb48
sk_4707cd57
19
move
S1 Exhibition2
19
2026-11-08T13:24:12.200Z
S1 58830, S2 59455
0ce05872f2
931ad5bb1c
sk_4707cd57
20
move
S2 Exhibition1
20
2026-11-08T13:24:14.228Z
S1 58830, S2 59427
291c3bfca2
0ce05872f2
sk_4707cd57
21
move
S1 Exhibition2
21
2026-11-08T13:24:16.220Z
S1 58838, S2 59427
fc3ffa5b89
291c3bfca2
sk_4707cd57
22
move
S2 Exhibition1
22
2026-11-08T13:24:18.235Z
S1 58838, S2 59412
7191d4564e
fc3ffa5b89
sk_4707cd57
23
move
S1 Exhibition2
23
2026-11-08T13:24:20.205Z
S1 58868, S2 59412
0e3873a25d
7191d4564e
sk_4707cd57
24
move
S2 Exhibition1
24
2026-11-08T13:24:22.196Z
S1 58868, S2 59421
a507ffc760
0e3873a25d
sk_4707cd57
25
move
S1 Exhibition2
25
2026-11-08T13:24:24.230Z
S1 58834, S2 59421
16d45a5540
a507ffc760
sk_4707cd57
26
move
S2 Exhibition1
26
2026-11-08T13:24:26.325Z
S1 58834, S2 59326
b0e581efbd
16d45a5540
sk_4707cd57
27
move
S1 Exhibition2
27
2026-11-08T13:24:28.396Z
S1 58763, S2 59326
ce1f640dd9
b0e581efbd
sk_4707cd57
28
move
S2 Exhibition1
28
2026-11-08T13:24:30.426Z
S1 58763, S2 59296
31925ad403
ce1f640dd9
sk_4707cd57
29
move
S1 Exhibition2
29
2026-11-08T13:24:32.396Z
S1 58793, S2 59296
96be1b9cbb
31925ad403
sk_4707cd57
30
move
S2 Exhibition1
30
2026-11-08T13:24:34.427Z
S1 58793, S2 59265
d5bd33cb20
96be1b9cbb
sk_4707cd57
31
move
S1 Exhibition2
31
2026-11-08T13:24:36.533Z
S1 58687, S2 59265
372b9c65a7
d5bd33cb20
sk_4707cd57
32
move
S2 Exhibition1
32
2026-11-08T13:24:38.698Z
S1 58687, S2 59100
9fd479d491
372b9c65a7
sk_4707cd57
33
move
S1 Exhibition2
33
2026-11-08T13:24:40.651Z
S1 58734, S2 59100
ad8deeccc3
9fd479d491
sk_4707cd57
34
move
S2 Exhibition1
34
2026-11-08T13:24:42.629Z
S1 58734, S2 59122
59daf2a5eb
ad8deeccc3
sk_4707cd57
35
move
S1 Exhibition2
35
2026-11-08T13:24:44.639Z
S1 58724, S2 59122
30a9ad146d
59daf2a5eb
sk_4707cd57
36
move
S2 Exhibition1
36
2026-11-08T13:24:46.581Z
S1 58724, S2 59180
283c3f1833
30a9ad146d
sk_4707cd57
37
move
S1 Exhibition2
37
2026-11-08T13:24:48.510Z
S1 58795, S2 59180
d2939b36d5
283c3f1833
sk_4707cd57
38
move
S2 Exhibition1
38
2026-11-08T13:24:50.459Z
S1 58795, S2 59231
9eeaac91fc
d2939b36d5
sk_4707cd57
39
move
S1 Exhibition2
39
2026-11-08T13:24:52.414Z
S1 58840, S2 59231
6758b4a08f
9eeaac91fc
sk_4707cd57
40
move
S2 Exhibition1
40
2026-11-08T13:24:54.344Z
S1 58840, S2 59301
31e785031c
6758b4a08f
sk_4707cd57
41
move
S1 Exhibition2
41
2026-11-08T13:24:56.272Z
S1 58912, S2 59301
570fcbbdcf
31e785031c
sk_4707cd57
42
move
S2 Exhibition1
42
2026-11-08T13:24:58.202Z
S1 58912, S2 59371
3ca318a68e
570fcbbdcf
sk_4707cd57
43
move
S1 Exhibition2
43
2026-11-08T13:25:00.215Z
S1 58899, S2 59371
8672794ca9
3ca318a68e
sk_4707cd57
44
move
S2 Exhibition1
44
2026-11-08T13:25:02.311Z
S1 58899, S2 59275
5626e2e56e
8672794ca9
sk_4707cd57
45
move
S1 Exhibition2
45
2026-11-08T13:25:04.515Z
S1 58695, S2 59275
3235afb96d
5626e2e56e
sk_4707cd57
46
move
S2 Exhibition1
46
2026-11-08T13:25:06.601Z
S1 58695, S2 59189
164ec004c2
3235afb96d
sk_4707cd57
47
move
S1 Exhibition2
47
2026-11-08T13:25:08.614Z
S1 58682, S2 59189
8ebbd4ece5
164ec004c2
sk_4707cd57
48
move
S2 Exhibition1
48
2026-11-08T13:25:10.561Z
S1 58682, S2 59242
d32594de25
8ebbd4ece5
sk_4707cd57
49
move
S1 Exhibition2
49
2026-11-08T13:25:13.373Z
S1 57870, S2 59242
41de02b4b3
d32594de25
sk_4707cd57
50
move
S2 Exhibition1
50
2026-11-08T13:25:15.534Z
S1 57870, S2 59081
d83dfebe2b
41de02b4b3
sk_4707cd57
51
move
S1 Exhibition2
51
2026-11-08T13:25:17.616Z
S1 57788, S2 59081
9ccb54fbca
d83dfebe2b
sk_4707cd57
52
move
S2 Exhibition1
52
2026-11-08T13:25:19.591Z
S1 57788, S2 59106
1ed6a834d8
9ccb54fbca
sk_4707cd57
53
move
S1 Exhibition2
53
2026-11-08T13:25:21.527Z
S1 57852, S2 59106
2c64a6367c
1ed6a834d8
sk_4707cd57
54
move
S2 Exhibition1
54
2026-11-08T13:25:23.457Z
S1 57852, S2 59176
fdfd23efeb
2c64a6367c
sk_4707cd57
55
move
S1 Exhibition2
55
2026-11-08T13:25:25.391Z
S1 57918, S2 59176
f736f5bafe
fdfd23efeb
sk_4707cd57
56
move
S2 Exhibition1
56
2026-11-08T13:25:27.331Z
S1 57918, S2 59236
58ca77228f
f736f5bafe
sk_4707cd57
57
move
S1 Exhibition2
57
2026-11-08T13:25:29.265Z
S1 57984, S2 59236
13e2c4e787
58ca77228f
sk_4707cd57
58
move
S2 Exhibition1
58
2026-11-08T13:25:31.199Z
S1 57984, S2 59302
225a176290
13e2c4e787
sk_4707cd57
59
move
S1 Exhibition2
59
2026-11-08T13:25:33.128Z
S1 58055, S2 59302
8c574511ef
225a176290
sk_4707cd57
60
move
S2 Exhibition1
60
2026-11-08T13:25:35.057Z
S1 58055, S2 59373
31ab5d990f
8c574511ef
sk_4707cd57
61
move
S1 Exhibition2
61
2026-11-08T13:25:36.986Z
S1 58126, S2 59373
bab4e8568b
31ab5d990f
sk_4707cd57
62
move
S2 Exhibition1
62
2026-11-08T13:25:38.913Z
S1 58126, S2 59446
3fa324152b
bab4e8568b
sk_4707cd57
63
move
S1 Exhibition2
63
2026-11-08T13:25:40.841Z
S1 58198, S2 59446
124f1e9228
3fa324152b
sk_4707cd57
64
move
S2 Exhibition1
64
2026-11-08T13:25:42.769Z
S1 58198, S2 59518
7b945a0a91
124f1e9228
sk_4707cd57
65
move
S1 Exhibition2
65
2026-11-08T13:25:44.705Z
S1 58262, S2 59518
b0f25f9945
7b945a0a91
sk_4707cd57
66
move
S2 Exhibition1
66
2026-11-08T13:25:46.636Z
S1 58262, S2 59587
58fd8d9a91
b0f25f9945
sk_4707cd57
67
move
S1 Exhibition2
67
2026-11-08T13:25:48.563Z
S1 58335, S2 59587
5fa081d30c
58fd8d9a91
sk_4707cd57
68
move
S2 Exhibition1
68
2026-11-08T13:25:50.491Z
S1 58335, S2 59659
439bda573f
5fa081d30c
sk_4707cd57
69
move
S1 Exhibition2
69
2026-11-08T13:25:52.418Z
S1 58408, S2 59659
19c03ea7f5
439bda573f
sk_4707cd57
70
move
S2 Exhibition1
70
2026-11-08T13:25:54.345Z
S1 58408, S2 59732
4dcf84e299
19c03ea7f5
sk_4707cd57
71
move
S1 Exhibition2
71
2026-11-08T13:25:56.272Z
S1 58481, S2 59732
255f1c427b
4dcf84e299
sk_4707cd57
72
move
S2 Exhibition1
72
2026-11-08T13:25:58.197Z
S1 58481, S2 59807
6c3c2154cd
255f1c427b
sk_4707cd57
73
move
S1 Exhibition2
73
2026-11-08T13:26:00.173Z
S1 58505, S2 59807
c164d14fce
6c3c2154cd
sk_4707cd57
74
move
S2 Exhibition1
74
2026-11-08T13:26:02.139Z
S1 58505, S2 59841
229ebe9682
c164d14fce
sk_4707cd57
75
move
S1 Exhibition2
75
2026-11-08T13:26:04.164Z
S1 58480, S2 59841
7521afa676
229ebe9682
sk_4707cd57
76
move
S2 Exhibition1
76
2026-11-08T13:26:06.096Z
S1 58480, S2 59909
06b5b3274a
7521afa676
sk_4707cd57
Check it yourself
This page runs the checker on the server, which only shows what the platform says about itself. Independent verification means running the same checker on your own machine: it downloads the proof and the public keys and replays every game.