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optimism_outputAtBlock RPC Method

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Updated on
Apr 09, 2026

optimism_outputAtBlock RPC Method

Parameters

blockNumber
string
REQUIRED
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Returns

result
object
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version
string
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outputRoot
string
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blockRef
object
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hash
string
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number
string
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parentHash
string
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timestamp
string
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l1origin
object
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hash
string
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number
string
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sequenceNumber
string
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withdrawalStorageRoot
string
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stateRoot
string
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syncStatus
object
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current_l1
object
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hash
string
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number
string
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parentHash
string
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timestamp
string
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current_l1_finalized
object
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hash
string
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number
string
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parentHash
string
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timestamp
string
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head_l1
object
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hash
string
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number
string
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parentHash
string
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timestamp
string
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safe_l1
object
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hash
string
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number
string
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parentHash
string
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timestamp
string
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finalized_l1
object
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hash
string
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number
string
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parentHash
string
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timestamp
string
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unsafe_l2
object
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hash
string
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number
string
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parentHash
string
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timestamp
string
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l1origin
object
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hash
string
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number
string
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sequenceNumber
string
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safe_l2
object
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hash
string
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number
string
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parentHash
string
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timestamp
string
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l1origin
object
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hash
string
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number
string
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sequenceNumber
string
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finalized_l2
object
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hash
string
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number
string
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parentHash
string
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timestamp
string
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l1origin
object
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hash
string
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number
string
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sequenceNumber
string
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queued_unsafe_l2
object
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hash
string
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number
string
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parentHash
string
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timestamp
string
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l1origin
object
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hash
string
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number
string
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sequenceNumber
string
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engine_sync_target
object
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hash
string
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number
string
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parentHash
string
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timestamp
string
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l1origin
object
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hash
string
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number
string
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sequenceNumber
string
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Request
1
curl -X POST "https://docs-demo.katana-mainnet.quiknode.pro/" \
2
-H "Content-Type: application/json" \
3
-d '{
4
"jsonrpc": "2.0",
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"method": "optimism_outputAtBlock",
6
"params": [
7
"BLOCK_NUMBER"
8
],
9
"id": 1
10
}'
1
curl -X POST "https://docs-demo.katana-mainnet.quiknode.pro/" \
2
-H "Content-Type: application/json" \
3
-d '{
4
"jsonrpc": "2.0",
5
"method": "optimism_outputAtBlock",
6
"params": [
7
"BLOCK_NUMBER"
8
],
9
"id": 1
10
}'
Response
1
{
2
"jsonrpc": "2.0",
3
"id": 1,
4
"result": {
5
"version": "0x0000000000000000000000000000000000000000000000000000000000000000",
6
"outputRoot": "0x3748d13530f221c6ec7f96963fa3b4effdfd746fff70fc30287aabf5b9d0e87a",
7
"blockRef": {
8
"hash": "0xf13cb1393cfe02ccdcc90156dfee0807ede2423dfae578051399814a1a76c9a9",
9
"number": 40678569,
10
"parentHash": "0xf20385f6e1117143c783a8bd8fb89ee85fd5069da356b04efc4a7587984ab332",
11
"timestamp": 1771426928,
12
"l1origin": {
13
"hash": "0x56a4520bbe08dca3bf72a99a0abb53679a7c8adc30b3c88fddb591bee4827160",
14
"number": 24484481
15
},
16
"sequenceNumber": 0
17
},
18
"withdrawalStorageRoot": "0xcc6500d39917e8a61a4831ec32b8dd2e6e148c7a89ed687af989286e56b30d2b",
19
"stateRoot": "0x5bd91e00b6a1384cc288fce7404f3f44812b2238416efe360df142ec1668a724",
20
"syncStatus": {
21
"current_l1": {
22
"hash": "0xd15b78ca985e7be2ee58a2b23c2e6549e5fb77c73ad548323cb4591bbcde6348",
23
"number": 24484485,
24
"parentHash": "0x990e8a356f8b8a9e7ea5bed4ee23dd9014dce014f17c641797498642153d9dc7",
25
"timestamp": 1771426919
26
},
27
"current_l1_finalized": {
28
"hash": "0x6fbd26d1bb39f00ee81022ec23e90e81d6933f504abddb2332c5b04f5d1c6d8c",
29
"number": 24484409,
30
"parentHash": "0xc596d01342a5eeabcf0813ef43e34bfffe5c38eeadfaf2448fda0ec6f457bb7b",
31
"timestamp": 1771425995
32
},
33
"head_l1": {
34
"hash": "0xd15b78ca985e7be2ee58a2b23c2e6549e5fb77c73ad548323cb4591bbcde6348",
35
"number": 24484485,
36
"parentHash": "0x990e8a356f8b8a9e7ea5bed4ee23dd9014dce014f17c641797498642153d9dc7",
37
"timestamp": 1771426919
38
},
39
"safe_l1": {
40
"hash": "0x2ebd8fe72ca1fdb9f8cbdc309cce7760dd94d599ebe1b7fd202e6738d2337a0e",
41
"number": 24484441,
42
"parentHash": "0x05c02864e534ce0e15d2229db0afbd21d947ed20a2fc2cabb8b8edd739551043",
43
"timestamp": 1771426391
44
},
45
"finalized_l1": {
46
"hash": "0x6fbd26d1bb39f00ee81022ec23e90e81d6933f504abddb2332c5b04f5d1c6d8c",
47
"number": 24484409,
48
"parentHash": "0xc596d01342a5eeabcf0813ef43e34bfffe5c38eeadfaf2448fda0ec6f457bb7b",
49
"timestamp": 1771425995
50
},
51
"unsafe_l2": {
52
"hash": "0x5701ec6381bee612070192b1cb3f5f1601e8b82694a491234bd98ef7aa3f2b3e",
53
"number": 40678570,
54
"parentHash": "0xf13cb1393cfe02ccdcc90156dfee0807ede2423dfae578051399814a1a76c9a9",
55
"timestamp": 1771426929,
56
"l1origin": {
57
"hash": "0x56a4520bbe08dca3bf72a99a0abb53679a7c8adc30b3c88fddb591bee4827160",
58
"number": 24484481
59
},
60
"sequenceNumber": 1
61
},
62
"safe_l2": {
63
"hash": "0x2a0ee1a976943aefa2c86bd47f4663f2809becf6eef26199b16b304ad9627e68",
64
"number": 40678293,
65
"parentHash": "0xecb0ddf1af6ec68b98b3e8175ad5284c2aec56e01a063758aa0b74c65b593710",
66
"timestamp": 1771426652,
67
"l1origin": {
68
"hash": "0x67b9276b5b87dd55226640815a1de6154f255d89d5f71682dec0d36386e9e838",
69
"number": 24484458
70
},
71
"sequenceNumber": 1
72
},
73
"finalized_l2": {
74
"hash": "0xc39a9766182148bcf9d9e759bfc4bd52d9af1d58f479082ccf9361f9266c3f6d",
75
"number": 40677605,
76
"parentHash": "0x70eec99860da2a01803e3db68864265fd5e2f9e847ca50baf82c876cc720ea3a",
77
"timestamp": 1771425964,
78
"l1origin": {
79
"hash": "0xcc39fedf6939a5cb2507099635601d9a4237b771a9b93b6697c4460e342548c0",
80
"number": 24484401
81
},
82
"sequenceNumber": 6
83
},
84
"pending_safe_l2": {
85
"hash": "0x2a0ee1a976943aefa2c86bd47f4663f2809becf6eef26199b16b304ad9627e68",
86
"number": 40678293,
87
"parentHash": "0xecb0ddf1af6ec68b98b3e8175ad5284c2aec56e01a063758aa0b74c65b593710",
88
"timestamp": 1771426652,
89
"l1origin": {
90
"hash": "0x67b9276b5b87dd55226640815a1de6154f255d89d5f71682dec0d36386e9e838",
91
"number": 24484458
92
},
93
"sequenceNumber": 1
94
},
95
"cross_unsafe_l2": {
96
"hash": "0x5701ec6381bee612070192b1cb3f5f1601e8b82694a491234bd98ef7aa3f2b3e",
97
"number": 40678570,
98
"parentHash": "0xf13cb1393cfe02ccdcc90156dfee0807ede2423dfae578051399814a1a76c9a9",
99
"timestamp": 1771426929,
100
"l1origin": {
101
"hash": "0x56a4520bbe08dca3bf72a99a0abb53679a7c8adc30b3c88fddb591bee4827160",
102
"number": 24484481
103
},
104
"sequenceNumber": 1
105
},
106
"local_safe_l2": {
107
"hash": "0x2a0ee1a976943aefa2c86bd47f4663f2809becf6eef26199b16b304ad9627e68",
108
"number": 40678293,
109
"parentHash": "0xecb0ddf1af6ec68b98b3e8175ad5284c2aec56e01a063758aa0b74c65b593710",
110
"timestamp": 1771426652,
111
"l1origin": {
112
"hash": "0x67b9276b5b87dd55226640815a1de6154f255d89d5f71682dec0d36386e9e838",
113
"number": 24484458
114
},
115
"sequenceNumber": 1
116
}
117
}
118
}
119
}
1
{
2
"jsonrpc": "2.0",
3
"id": 1,
4
"result": {
5
"version": "0x0000000000000000000000000000000000000000000000000000000000000000",
6
"outputRoot": "0x3748d13530f221c6ec7f96963fa3b4effdfd746fff70fc30287aabf5b9d0e87a",
7
"blockRef": {
8
"hash": "0xf13cb1393cfe02ccdcc90156dfee0807ede2423dfae578051399814a1a76c9a9",
9
"number": 40678569,
10
"parentHash": "0xf20385f6e1117143c783a8bd8fb89ee85fd5069da356b04efc4a7587984ab332",
11
"timestamp": 1771426928,
12
"l1origin": {
13
"hash": "0x56a4520bbe08dca3bf72a99a0abb53679a7c8adc30b3c88fddb591bee4827160",
14
"number": 24484481
15
},
16
"sequenceNumber": 0
17
},
18
"withdrawalStorageRoot": "0xcc6500d39917e8a61a4831ec32b8dd2e6e148c7a89ed687af989286e56b30d2b",
19
"stateRoot": "0x5bd91e00b6a1384cc288fce7404f3f44812b2238416efe360df142ec1668a724",
20
"syncStatus": {
21
"current_l1": {
22
"hash": "0xd15b78ca985e7be2ee58a2b23c2e6549e5fb77c73ad548323cb4591bbcde6348",
23
"number": 24484485,
24
"parentHash": "0x990e8a356f8b8a9e7ea5bed4ee23dd9014dce014f17c641797498642153d9dc7",
25
"timestamp": 1771426919
26
},
27
"current_l1_finalized": {
28
"hash": "0x6fbd26d1bb39f00ee81022ec23e90e81d6933f504abddb2332c5b04f5d1c6d8c",
29
"number": 24484409,
30
"parentHash": "0xc596d01342a5eeabcf0813ef43e34bfffe5c38eeadfaf2448fda0ec6f457bb7b",
31
"timestamp": 1771425995
32
},
33
"head_l1": {
34
"hash": "0xd15b78ca985e7be2ee58a2b23c2e6549e5fb77c73ad548323cb4591bbcde6348",
35
"number": 24484485,
36
"parentHash": "0x990e8a356f8b8a9e7ea5bed4ee23dd9014dce014f17c641797498642153d9dc7",
37
"timestamp": 1771426919
38
},
39
"safe_l1": {
40
"hash": "0x2ebd8fe72ca1fdb9f8cbdc309cce7760dd94d599ebe1b7fd202e6738d2337a0e",
41
"number": 24484441,
42
"parentHash": "0x05c02864e534ce0e15d2229db0afbd21d947ed20a2fc2cabb8b8edd739551043",
43
"timestamp": 1771426391
44
},
45
"finalized_l1": {
46
"hash": "0x6fbd26d1bb39f00ee81022ec23e90e81d6933f504abddb2332c5b04f5d1c6d8c",
47
"number": 24484409,
48
"parentHash": "0xc596d01342a5eeabcf0813ef43e34bfffe5c38eeadfaf2448fda0ec6f457bb7b",
49
"timestamp": 1771425995
50
},
51
"unsafe_l2": {
52
"hash": "0x5701ec6381bee612070192b1cb3f5f1601e8b82694a491234bd98ef7aa3f2b3e",
53
"number": 40678570,
54
"parentHash": "0xf13cb1393cfe02ccdcc90156dfee0807ede2423dfae578051399814a1a76c9a9",
55
"timestamp": 1771426929,
56
"l1origin": {
57
"hash": "0x56a4520bbe08dca3bf72a99a0abb53679a7c8adc30b3c88fddb591bee4827160",
58
"number": 24484481
59
},
60
"sequenceNumber": 1
61
},
62
"safe_l2": {
63
"hash": "0x2a0ee1a976943aefa2c86bd47f4663f2809becf6eef26199b16b304ad9627e68",
64
"number": 40678293,
65
"parentHash": "0xecb0ddf1af6ec68b98b3e8175ad5284c2aec56e01a063758aa0b74c65b593710",
66
"timestamp": 1771426652,
67
"l1origin": {
68
"hash": "0x67b9276b5b87dd55226640815a1de6154f255d89d5f71682dec0d36386e9e838",
69
"number": 24484458
70
},
71
"sequenceNumber": 1
72
},
73
"finalized_l2": {
74
"hash": "0xc39a9766182148bcf9d9e759bfc4bd52d9af1d58f479082ccf9361f9266c3f6d",
75
"number": 40677605,
76
"parentHash": "0x70eec99860da2a01803e3db68864265fd5e2f9e847ca50baf82c876cc720ea3a",
77
"timestamp": 1771425964,
78
"l1origin": {
79
"hash": "0xcc39fedf6939a5cb2507099635601d9a4237b771a9b93b6697c4460e342548c0",
80
"number": 24484401
81
},
82
"sequenceNumber": 6
83
},
84
"pending_safe_l2": {
85
"hash": "0x2a0ee1a976943aefa2c86bd47f4663f2809becf6eef26199b16b304ad9627e68",
86
"number": 40678293,
87
"parentHash": "0xecb0ddf1af6ec68b98b3e8175ad5284c2aec56e01a063758aa0b74c65b593710",
88
"timestamp": 1771426652,
89
"l1origin": {
90
"hash": "0x67b9276b5b87dd55226640815a1de6154f255d89d5f71682dec0d36386e9e838",
91
"number": 24484458
92
},
93
"sequenceNumber": 1
94
},
95
"cross_unsafe_l2": {
96
"hash": "0x5701ec6381bee612070192b1cb3f5f1601e8b82694a491234bd98ef7aa3f2b3e",
97
"number": 40678570,
98
"parentHash": "0xf13cb1393cfe02ccdcc90156dfee0807ede2423dfae578051399814a1a76c9a9",
99
"timestamp": 1771426929,
100
"l1origin": {
101
"hash": "0x56a4520bbe08dca3bf72a99a0abb53679a7c8adc30b3c88fddb591bee4827160",
102
"number": 24484481
103
},
104
"sequenceNumber": 1
105
},
106
"local_safe_l2": {
107
"hash": "0x2a0ee1a976943aefa2c86bd47f4663f2809becf6eef26199b16b304ad9627e68",
108
"number": 40678293,
109
"parentHash": "0xecb0ddf1af6ec68b98b3e8175ad5284c2aec56e01a063758aa0b74c65b593710",
110
"timestamp": 1771426652,
111
"l1origin": {
112
"hash": "0x67b9276b5b87dd55226640815a1de6154f255d89d5f71682dec0d36386e9e838",
113
"number": 24484458
114
},
115
"sequenceNumber": 1
116
}
117
}
118
}
119
}
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