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("6841576455990696621:set_01M7GM0XJ3FFXSTY7QT28YD2FR") = 600e2711007bbaad..., 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_01M7GM0XJ5E9387BRFBYNCA394: verified
✓
signatures
70 receipts, body hashes and ed25519 signatures valid (sk_4707cd57)
✓
receipt chain
seq 1..70, every prev_hash links
✓
move log
70 logged moves match their receipts (seat, number, move hash, arrival time)
✓
replay
70 state hashes match the local fourfall 1.0 engine
✓
result
a win for seat 2 (four_in_a_row) follows from the moves
70 signed receipts
#
Kind
Seat
Move
Arrived
Clocks after (ms)
Hash
Prev
Key
1
move
S1 Exhibition1
1
2026-11-15T22:07:42.718Z
S1 59882, S2 60000
47d1fdb670
start
sk_4707cd57
2
move
S2 Exhibition2
2
2026-11-15T22:07:44.807Z
S1 59882, S2 59911
5c14ccb15a
47d1fdb670
sk_4707cd57
3
move
S1 Exhibition1
3
2026-11-15T22:07:46.788Z
S1 59901, S2 59911
a4ca7738b1
5c14ccb15a
sk_4707cd57
4
move
S2 Exhibition2
4
2026-11-15T22:07:48.797Z
S1 59901, S2 59902
753b7b050f
a4ca7738b1
sk_4707cd57
5
move
S1 Exhibition1
5
2026-11-15T22:07:50.797Z
S1 59901, S2 59902
adfd312fe1
753b7b050f
sk_4707cd57
6
move
S2 Exhibition2
6
2026-11-15T22:07:52.812Z
S1 59901, S2 59887
4f85ce3212
adfd312fe1
sk_4707cd57
7
move
S1 Exhibition1
7
2026-11-15T22:07:54.856Z
S1 59857, S2 59887
de5467cc8d
4f85ce3212
sk_4707cd57
8
move
S2 Exhibition2
8
2026-11-15T22:07:56.897Z
S1 59857, S2 59846
df2cb83fa8
de5467cc8d
sk_4707cd57
9
move
S1 Exhibition1
9
2026-11-15T22:07:58.869Z
S1 59885, S2 59846
8b2872ffba
df2cb83fa8
sk_4707cd57
10
move
S2 Exhibition2
10
2026-11-15T22:08:00.793Z
S1 59885, S2 59922
e666d45f32
8b2872ffba
sk_4707cd57
11
move
S1 Exhibition1
11
2026-11-15T22:08:03.203Z
S1 59475, S2 59922
f73a7da2fd
e666d45f32
sk_4707cd57
12
move
S2 Exhibition2
12
2026-11-15T22:08:05.209Z
S1 59475, S2 59916
1067d78882
f73a7da2fd
sk_4707cd57
13
move
S1 Exhibition1
13
2026-11-15T22:08:07.322Z
S1 59362, S2 59916
db629635bf
1067d78882
sk_4707cd57
14
move
S2 Exhibition2
14
2026-11-15T22:08:09.401Z
S1 59362, S2 59837
0968cc67a3
db629635bf
sk_4707cd57
15
move
S1 Exhibition1
15
2026-11-15T22:08:11.509Z
S1 59254, S2 59837
1476126e28
0968cc67a3
sk_4707cd57
16
move
S2 Exhibition2
16
2026-11-15T22:08:13.489Z
S1 59254, S2 59857
1267b2b496
1476126e28
sk_4707cd57
17
move
S1 Exhibition1
17
2026-11-15T22:08:15.501Z
S1 59242, S2 59857
0fe99f4fb5
1267b2b496
sk_4707cd57
18
move
S2 Exhibition2
18
2026-11-15T22:08:17.530Z
S1 59242, S2 59828
28fb34aeae
0fe99f4fb5
sk_4707cd57
19
move
S1 Exhibition1
19
2026-11-15T22:08:19.705Z
S1 59067, S2 59828
b4d4c3c333
28fb34aeae
sk_4707cd57
20
move
S2 Exhibition2
20
2026-11-15T22:08:21.801Z
S1 59067, S2 59732
48369e29f7
b4d4c3c333
sk_4707cd57
21
move
S1 Exhibition1
21
2026-11-15T22:08:24.013Z
S1 58855, S2 59732
7c36a06aae
48369e29f7
sk_4707cd57
22
move
S2 Exhibition2
22
2026-11-15T22:08:26.135Z
S1 58855, S2 59610
985856851a
7c36a06aae
sk_4707cd57
23
move
S1 Exhibition1
23
2026-11-15T22:08:28.104Z
S1 58886, S2 59610
7224993cbc
985856851a
sk_4707cd57
24
move
S2 Exhibition2
24
2026-11-15T22:08:30.097Z
S1 58886, S2 59617
1d25ada48b
7224993cbc
sk_4707cd57
25
move
S1 Exhibition1
25
2026-11-15T22:08:32.054Z
S1 58929, S2 59617
bd85c9b0a6
1d25ada48b
sk_4707cd57
26
move
S2 Exhibition2
26
2026-11-15T22:08:34.024Z
S1 58929, S2 59647
45f46ee2e2
bd85c9b0a6
sk_4707cd57
27
move
S1 Exhibition1
27
2026-11-15T22:08:35.998Z
S1 58955, S2 59647
4e8314bf72
45f46ee2e2
sk_4707cd57
28
move
S2 Exhibition2
28
2026-11-15T22:08:37.998Z
S1 58955, S2 59647
2d4a835d27
4e8314bf72
sk_4707cd57
29
move
S1 Exhibition1
29
2026-11-15T22:08:40.007Z
S1 58946, S2 59647
9a0e5dc170
2d4a835d27
sk_4707cd57
30
move
S2 Exhibition2
30
2026-11-15T22:08:41.963Z
S1 58946, S2 59691
09d372495a
9a0e5dc170
sk_4707cd57
31
move
S1 Exhibition1
31
2026-11-15T22:08:43.923Z
S1 58986, S2 59691
6a79751327
09d372495a
sk_4707cd57
32
move
S2 Exhibition2
32
2026-11-15T22:08:45.883Z
S1 58986, S2 59731
b74e8f897d
6a79751327
sk_4707cd57
33
move
S1 Exhibition1
33
2026-11-15T22:08:47.836Z
S1 59033, S2 59731
2e1502e41d
b74e8f897d
sk_4707cd57
34
move
S2 Exhibition2
34
2026-11-15T22:08:49.790Z
S1 59033, S2 59777
5d8ea802bb
2e1502e41d
sk_4707cd57
35
move
S1 Exhibition1
35
2026-11-15T22:08:51.740Z
S1 59083, S2 59777
9e8f4936d0
5d8ea802bb
sk_4707cd57
36
move
S2 Exhibition2
36
2026-11-15T22:08:53.680Z
S1 59083, S2 59837
98a8d17bbc
9e8f4936d0
sk_4707cd57
37
move
S1 Exhibition1
37
2026-11-15T22:08:55.643Z
S1 59120, S2 59837
a8f2a11485
98a8d17bbc
sk_4707cd57
38
move
S2 Exhibition2
38
2026-11-15T22:08:57.593Z
S1 59120, S2 59887
bdbb7e407d
a8f2a11485
sk_4707cd57
39
move
S1 Exhibition1
39
2026-11-15T22:08:59.521Z
S1 59192, S2 59887
dc5b52ec38
bdbb7e407d
sk_4707cd57
40
move
S2 Exhibition2
40
2026-11-15T22:09:01.519Z
S1 59192, S2 59889
246f5465c6
dc5b52ec38
sk_4707cd57
41
move
S1 Exhibition1
41
2026-11-15T22:09:03.491Z
S1 59220, S2 59889
e731e328fa
246f5465c6
sk_4707cd57
42
move
S2 Exhibition2
42
2026-11-15T22:09:05.437Z
S1 59220, S2 59943
894951f3d9
e731e328fa
sk_4707cd57
43
move
S1 Exhibition1
43
2026-11-15T22:09:07.375Z
S1 59282, S2 59943
2ac27044b0
894951f3d9
sk_4707cd57
44
move
S2 Exhibition2
44
2026-11-15T22:09:09.401Z
S1 59282, S2 59917
859536e687
2ac27044b0
sk_4707cd57
45
move
S1 Exhibition1
45
2026-11-15T22:09:11.344Z
S1 59339, S2 59917
b5441d697c
859536e687
sk_4707cd57
46
move
S2 Exhibition2
46
2026-11-15T22:09:13.284Z
S1 59339, S2 59977
e4abccbc19
b5441d697c
sk_4707cd57
47
move
S1 Exhibition1
47
2026-11-15T22:09:15.222Z
S1 59401, S2 59977
5d705749c8
e4abccbc19
sk_4707cd57
48
move
S2 Exhibition2
48
2026-11-15T22:09:17.158Z
S1 59401, S2 60041
b298bbb6fa
5d705749c8
sk_4707cd57
49
move
S1 Exhibition1
49
2026-11-15T22:09:19.090Z
S1 59469, S2 60041
23e5b18c7a
b298bbb6fa
sk_4707cd57
50
move
S2 Exhibition2
50
2026-11-15T22:09:21.021Z
S1 59469, S2 60110
2ff58d8a4d
23e5b18c7a
sk_4707cd57
51
move
S1 Exhibition1
51
2026-11-15T22:09:22.958Z
S1 59532, S2 60110
03e61eb8d5
2ff58d8a4d
sk_4707cd57
52
move
S2 Exhibition2
52
2026-11-15T22:09:24.887Z
S1 59532, S2 60181
a5856d4e97
03e61eb8d5
sk_4707cd57
53
move
S1 Exhibition1
53
2026-11-15T22:09:26.826Z
S1 59593, S2 60181
e6904a4149
a5856d4e97
sk_4707cd57
54
move
S2 Exhibition2
54
2026-11-15T22:09:28.763Z
S1 59593, S2 60244
ffaf47dee4
e6904a4149
sk_4707cd57
55
move
S1 Exhibition1
55
2026-11-15T22:09:30.690Z
S1 59666, S2 60244
81982b1ed1
ffaf47dee4
sk_4707cd57
56
move
S2 Exhibition2
56
2026-11-15T22:09:33.131Z
S1 59666, S2 59803
b0ebebd0be
81982b1ed1
sk_4707cd57
57
move
S1 Exhibition1
57
2026-11-15T22:09:35.535Z
S1 59262, S2 59803
a6ffbc2549
b0ebebd0be
sk_4707cd57
58
move
S2 Exhibition2
58
2026-11-15T22:09:37.464Z
S1 59262, S2 59874
7b09a267a6
a6ffbc2549
sk_4707cd57
59
move
S1 Exhibition1
59
2026-11-15T22:09:39.393Z
S1 59333, S2 59874
bbc62f7930
7b09a267a6
sk_4707cd57
60
move
S2 Exhibition2
60
2026-11-15T22:09:41.324Z
S1 59333, S2 59943
6e105d2fb7
bbc62f7930
sk_4707cd57
61
move
S1 Exhibition1
61
2026-11-15T22:09:43.253Z
S1 59404, S2 59943
2b1d26f580
6e105d2fb7
sk_4707cd57
62
move
S2 Exhibition2
62
2026-11-15T22:09:45.180Z
S1 59404, S2 60016
d27d273e20
2b1d26f580
sk_4707cd57
63
move
S1 Exhibition1
63
2026-11-15T22:09:47.112Z
S1 59472, S2 60016
cc69350bf7
d27d273e20
sk_4707cd57
64
move
S2 Exhibition2
64
2026-11-15T22:09:49.044Z
S1 59472, S2 60084
418230587e
cc69350bf7
sk_4707cd57
65
move
S1 Exhibition1
65
2026-11-15T22:09:50.978Z
S1 59538, S2 60084
e27d2c3c36
418230587e
sk_4707cd57
66
move
S2 Exhibition2
66
2026-11-15T22:09:52.951Z
S1 59538, S2 60111
f07f51d30a
e27d2c3c36
sk_4707cd57
67
move
S1 Exhibition1
67
2026-11-15T22:09:54.885Z
S1 59604, S2 60111
5522ffbfd0
f07f51d30a
sk_4707cd57
68
move
S2 Exhibition2
68
2026-11-15T22:09:56.845Z
S1 59604, S2 60151
467fabcfe8
5522ffbfd0
sk_4707cd57
69
move
S1 Exhibition1
69
2026-11-15T22:09:58.787Z
S1 59662, S2 60151
60400a17ba
467fabcfe8
sk_4707cd57
70
move
S2 Exhibition2
70
2026-11-15T22:10:00.732Z
S1 59662, S2 60206
5f2273e76a
60400a17ba
sk_4707cd57
Game 2 m_01M7GM0XJ6EW1AQQ1DWD24E6B0: verified
✓
signatures
67 receipts, body hashes and ed25519 signatures valid (sk_4707cd57)
✓
receipt chain
seq 1..67, every prev_hash links
✓
move log
67 logged moves match their receipts (seat, number, move hash, arrival time)
✓
replay
67 state hashes match the local fourfall 1.0 engine
✓
result
a win for seat 1 (four_in_a_row) follows from the moves
67 signed receipts
#
Kind
Seat
Move
Arrived
Clocks after (ms)
Hash
Prev
Key
1
move
S1 Exhibition2
1
2026-11-15T22:07:42.726Z
S1 59874, S2 60000
b43ebdcad0
start
sk_4707cd57
2
move
S2 Exhibition1
2
2026-11-15T22:07:44.809Z
S1 59874, S2 59917
50f60af9b1
b43ebdcad0
sk_4707cd57
3
move
S1 Exhibition2
3
2026-11-15T22:07:46.910Z
S1 59773, S2 59917
40b9016163
50f60af9b1
sk_4707cd57
4
move
S2 Exhibition1
4
2026-11-15T22:07:48.919Z
S1 59773, S2 59908
dac8473544
40b9016163
sk_4707cd57
5
move
S1 Exhibition2
5
2026-11-15T22:07:50.998Z
S1 59694, S2 59908
7c572256ef
dac8473544
sk_4707cd57
6
move
S2 Exhibition1
6
2026-11-15T22:07:52.966Z
S1 59694, S2 59940
2e52e9079e
7c572256ef
sk_4707cd57
7
move
S1 Exhibition2
7
2026-11-15T22:07:54.933Z
S1 59727, S2 59940
6d6675d866
2e52e9079e
sk_4707cd57
8
move
S2 Exhibition1
8
2026-11-15T22:07:57.015Z
S1 59727, S2 59858
a79f651594
6d6675d866
sk_4707cd57
9
move
S1 Exhibition2
9
2026-11-15T22:07:59.008Z
S1 59734, S2 59858
aca064fab0
a79f651594
sk_4707cd57
10
move
S2 Exhibition1
10
2026-11-15T22:08:00.976Z
S1 59734, S2 59890
b4c370fb96
aca064fab0
sk_4707cd57
11
move
S1 Exhibition2
11
2026-11-15T22:08:03.312Z
S1 59398, S2 59890
9d2938bfdc
b4c370fb96
sk_4707cd57
12
move
S2 Exhibition1
12
2026-11-15T22:08:05.254Z
S1 59398, S2 59948
ebff94fdaa
9d2938bfdc
sk_4707cd57
13
move
S1 Exhibition2
13
2026-11-15T22:08:07.315Z
S1 59337, S2 59948
6f236aecd5
ebff94fdaa
sk_4707cd57
14
move
S2 Exhibition1
14
2026-11-15T22:08:09.402Z
S1 59337, S2 59861
c2310ecff6
6f236aecd5
sk_4707cd57
15
move
S1 Exhibition2
15
2026-11-15T22:08:11.516Z
S1 59223, S2 59861
45cdeeaa5b
c2310ecff6
sk_4707cd57
16
move
S2 Exhibition1
16
2026-11-15T22:08:13.511Z
S1 59223, S2 59866
c59c3600bf
45cdeeaa5b
sk_4707cd57
17
move
S1 Exhibition2
17
2026-11-15T22:08:15.502Z
S1 59232, S2 59866
8ece01b2ea
c59c3600bf
sk_4707cd57
18
move
S2 Exhibition1
18
2026-11-15T22:08:17.531Z
S1 59232, S2 59837
1eedf7f371
8ece01b2ea
sk_4707cd57
19
move
S1 Exhibition2
19
2026-11-15T22:08:19.635Z
S1 59128, S2 59837
f2bd5a5dfa
1eedf7f371
sk_4707cd57
20
move
S2 Exhibition1
20
2026-11-15T22:08:21.800Z
S1 59128, S2 59672
b3f2a4b2c8
f2bd5a5dfa
sk_4707cd57
21
move
S1 Exhibition2
21
2026-11-15T22:08:24.023Z
S1 58905, S2 59672
fdc6b5166e
b3f2a4b2c8
sk_4707cd57
22
move
S2 Exhibition1
22
2026-11-15T22:08:26.199Z
S1 58905, S2 59496
068b5f846a
fdc6b5166e
sk_4707cd57
23
move
S1 Exhibition2
23
2026-11-15T22:08:28.222Z
S1 58882, S2 59496
68d2d771ba
068b5f846a
sk_4707cd57
24
move
S2 Exhibition1
24
2026-11-15T22:08:30.210Z
S1 58882, S2 59508
6b945edccf
68d2d771ba
sk_4707cd57
25
move
S1 Exhibition2
25
2026-11-15T22:08:32.218Z
S1 58874, S2 59508
6f86c93ae5
6b945edccf
sk_4707cd57
26
move
S2 Exhibition1
26
2026-11-15T22:08:34.205Z
S1 58874, S2 59521
e741f40b96
6f86c93ae5
sk_4707cd57
27
move
S1 Exhibition2
27
2026-11-15T22:08:36.217Z
S1 58862, S2 59521
86bb8985d2
e741f40b96
sk_4707cd57
28
move
S2 Exhibition1
28
2026-11-15T22:08:38.176Z
S1 58862, S2 59562
ec0c760dc0
86bb8985d2
sk_4707cd57
29
move
S1 Exhibition2
29
2026-11-15T22:08:40.156Z
S1 58882, S2 59562
83993d026e
ec0c760dc0
sk_4707cd57
30
move
S2 Exhibition1
30
2026-11-15T22:08:42.093Z
S1 58882, S2 59625
341c44e6d2
83993d026e
sk_4707cd57
31
move
S1 Exhibition2
31
2026-11-15T22:08:44.025Z
S1 58950, S2 59625
e43edd2292
341c44e6d2
sk_4707cd57
32
move
S2 Exhibition1
32
2026-11-15T22:08:45.952Z
S1 58950, S2 59698
16642f7477
e43edd2292
sk_4707cd57
33
move
S1 Exhibition2
33
2026-11-15T22:08:47.903Z
S1 58999, S2 59698
99a1dcf689
16642f7477
sk_4707cd57
34
move
S2 Exhibition1
34
2026-11-15T22:08:49.902Z
S1 58999, S2 59699
f55a9e37ab
99a1dcf689
sk_4707cd57
35
move
S1 Exhibition2
35
2026-11-15T22:08:51.849Z
S1 59052, S2 59699
3a4efa64a7
f55a9e37ab
sk_4707cd57
36
move
S2 Exhibition1
36
2026-11-15T22:08:53.798Z
S1 59052, S2 59750
903d70babd
3a4efa64a7
sk_4707cd57
37
move
S1 Exhibition2
37
2026-11-15T22:08:55.798Z
S1 59052, S2 59750
4967bc35bd
903d70babd
sk_4707cd57
38
move
S2 Exhibition1
38
2026-11-15T22:08:57.750Z
S1 59052, S2 59798
4bfbe17119
4967bc35bd
sk_4707cd57
39
move
S1 Exhibition2
39
2026-11-15T22:08:59.684Z
S1 59118, S2 59798
4ac0e5b255
4bfbe17119
sk_4707cd57
40
move
S2 Exhibition1
40
2026-11-15T22:09:01.732Z
S1 59118, S2 59750
375e82b7ec
4ac0e5b255
sk_4707cd57
41
move
S1 Exhibition2
41
2026-11-15T22:09:03.724Z
S1 59126, S2 59750
b18b13a000
375e82b7ec
sk_4707cd57
42
move
S2 Exhibition1
42
2026-11-15T22:09:05.663Z
S1 59126, S2 59811
9577c76d30
b18b13a000
sk_4707cd57
43
move
S1 Exhibition2
43
2026-11-15T22:09:07.587Z
S1 59202, S2 59811
7e7f026ad5
9577c76d30
sk_4707cd57
44
move
S2 Exhibition1
44
2026-11-15T22:09:09.520Z
S1 59202, S2 59878
4bc8ec6578
7e7f026ad5
sk_4707cd57
45
move
S1 Exhibition2
45
2026-11-15T22:09:11.461Z
S1 59261, S2 59878
24ffe6376a
4bc8ec6578
sk_4707cd57
46
move
S2 Exhibition1
46
2026-11-15T22:09:13.578Z
S1 59261, S2 59761
e0a403fbd5
24ffe6376a
sk_4707cd57
47
move
S1 Exhibition2
47
2026-11-15T22:09:15.672Z
S1 59167, S2 59761
8025112cfa
e0a403fbd5
sk_4707cd57
48
move
S2 Exhibition1
48
2026-11-15T22:09:17.603Z
S1 59167, S2 59830
d586f99f83
8025112cfa
sk_4707cd57
49
move
S1 Exhibition2
49
2026-11-15T22:09:19.533Z
S1 59237, S2 59830
4614d21170
d586f99f83
sk_4707cd57
50
move
S2 Exhibition1
50
2026-11-15T22:09:21.464Z
S1 59237, S2 59899
5086a295d3
4614d21170
sk_4707cd57
51
move
S1 Exhibition2
51
2026-11-15T22:09:23.399Z
S1 59302, S2 59899
fd6e969802
5086a295d3
sk_4707cd57
52
move
S2 Exhibition1
52
2026-11-15T22:09:25.335Z
S1 59302, S2 59963
e4e6142f30
fd6e969802
sk_4707cd57
53
move
S1 Exhibition2
53
2026-11-15T22:09:27.266Z
S1 59371, S2 59963
ef70942c28
e4e6142f30
sk_4707cd57
54
move
S2 Exhibition1
54
2026-11-15T22:09:29.200Z
S1 59371, S2 60029
3bccc9b3f0
ef70942c28
sk_4707cd57
55
move
S1 Exhibition2
55
2026-11-15T22:09:31.134Z
S1 59437, S2 60029
dbd903df3e
3bccc9b3f0
sk_4707cd57
56
move
S2 Exhibition1
56
2026-11-15T22:09:33.537Z
S1 59437, S2 59626
c0f44899c0
dbd903df3e
sk_4707cd57
57
move
S1 Exhibition2
57
2026-11-15T22:09:35.574Z
S1 59400, S2 59626
16137e9f59
c0f44899c0
sk_4707cd57
58
move
S2 Exhibition1
58
2026-11-15T22:09:37.517Z
S1 59400, S2 59683
bb051c964f
16137e9f59
sk_4707cd57
59
move
S1 Exhibition2
59
2026-11-15T22:09:39.444Z
S1 59473, S2 59683
60e3229552
bb051c964f
sk_4707cd57
60
move
S2 Exhibition1
60
2026-11-15T22:09:41.376Z
S1 59473, S2 59751
3bbbe3a1fc
60e3229552
sk_4707cd57
61
move
S1 Exhibition2
61
2026-11-15T22:09:43.305Z
S1 59544, S2 59751
bc13906811
3bbbe3a1fc
sk_4707cd57
62
move
S2 Exhibition1
62
2026-11-15T22:09:45.252Z
S1 59544, S2 59804
727720bf23
bc13906811
sk_4707cd57
63
move
S1 Exhibition2
63
2026-11-15T22:09:47.236Z
S1 59560, S2 59804
442b7a653b
727720bf23
sk_4707cd57
64
move
S2 Exhibition1
64
2026-11-15T22:09:49.164Z
S1 59560, S2 59876
6e290c846d
442b7a653b
sk_4707cd57
65
move
S1 Exhibition2
65
2026-11-15T22:09:51.091Z
S1 59633, S2 59876
c7a1491e6e
6e290c846d
sk_4707cd57
66
move
S2 Exhibition1
66
2026-11-15T22:09:53.023Z
S1 59633, S2 59944
8dd78e99a9
c7a1491e6e
sk_4707cd57
67
move
S1 Exhibition2
67
2026-11-15T22:09:54.967Z
S1 59689, S2 59944
e5aa6a2f94
8dd78e99a9
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.