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optimism_outputAtBlock RPC Method

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Updated on
Jan 19, 2026

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
integer
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parentHash
string
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timestamp
integer
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l1origin
object
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hash
string
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number
integer
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sequenceNumber
integer
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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
integer
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parentHash
string
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timestamp
integer
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current_l1_finalized
object
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hash
string
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number
integer
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parentHash
string
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timestamp
integer
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head_l1
object
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hash
string
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number
integer
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parentHash
string
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timestamp
integer
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safe_l1
object
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hash
string
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number
integer
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parentHash
string
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timestamp
integer
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finalized_l1
object
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hash
string
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number
integer
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parentHash
string
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timestamp
integer
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unsafe_l2
object
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hash
string
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number
integer
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parentHash
string
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timestamp
integer
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l1origin
object
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hash
string
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number
integer
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sequenceNumber
integer
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safe_l2
object
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hash
string
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number
integer
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parentHash
string
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timestamp
integer
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l1origin
object
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hash
string
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number
integer
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sequenceNumber
integer
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finalized_l2
object
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hash
string
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number
integer
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parentHash
string
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timestamp
integer
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l1origin
object
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hash
string
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number
integer
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sequenceNumber
integer
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pending_safe_l2
object
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hash
string
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number
integer
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parentHash
string
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timestamp
integer
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l1origin
object
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hash
string
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number
integer
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sequenceNumber
integer
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queued_unsafe_l2
object
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hash
string
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number
integer
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parentHash
string
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timestamp
integer
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l1origin
object
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hash
string
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number
integer
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sequenceNumber
integer
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engine_sync_target
object
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hash
string
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number
integer
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parentHash
string
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timestamp
integer
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l1origin
object
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hash
string
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number
integer
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sequenceNumber
integer
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Request
Response
1
{
2
"jsonrpc": "2.0",
3
"id": 1,
4
"result": {
5
"version": "0x0000000000000000000000000000000000000000000000000000000000000000",
6
"outputRoot": "0x5f8c5c26bb445c415db91400b1e4a8ad7cc1adc48acdbc8801fc018749896891",
7
"blockRef": {
8
"hash": "0x54e5a1b8f9b2f620517ba0a93058df08459c26fa6bfa5be5cf4c45e607388daa",
9
"number": 52446,
10
"parentHash": "0x2f7c1275d3cc673470c19819e89824874fa12df8d91c86cdc0c768ac8aa18d67",
11
"timestamp": 1704791580,
12
"l1origin": {
13
"hash": "0xef61442f5deaa6c43b0d9fea3307c66635cbe450752b2a8d3b19b48c653fb2ec",
14
"number": 5052297
15
},
16
"sequenceNumber": 0
17
},
18
"withdrawalStorageRoot": "0x8ed4baae3a927be3dea54996b4d5899f8c01e7594bf50b17dc1e741388ce3d12",
19
"stateRoot": "0x24aa7f8c41cc73e7c4f6a513d756f28a2a0a1e1dc983bfa1346832ef69731562",
20
"syncStatus": {
21
"current_l1": {
22
"hash": "0x4515dbcb99e792702772ecac4eb612c04ac3ca5a4555b7a45ea72a54414c5c79",
23
"number": 11809912,
24
"parentHash": "0xd2579069ed89ad729d5efce0e3931a4993d8b16eab2808996dde3b688bb22a4e",
25
"timestamp": 1790713632
26
},
27
"current_l1_finalized": {
28
"hash": "0x2f4a598d8e163fc2bd07fe17845f5ca6a484329ba8a6ffc1b50a5cc531e24a95",
29
"number": 11809832,
30
"parentHash": "0x32cb9bb6b3898309b22910879ba4569ddc50e85a2bc1e401920670b58a520e13",
31
"timestamp": 1790712672
32
},
33
"head_l1": {
34
"hash": "0x4515dbcb99e792702772ecac4eb612c04ac3ca5a4555b7a45ea72a54414c5c79",
35
"number": 11809912,
36
"parentHash": "0xd2579069ed89ad729d5efce0e3931a4993d8b16eab2808996dde3b688bb22a4e",
37
"timestamp": 1790713632
38
},
39
"safe_l1": {
40
"hash": "0xe53e889dfc93566a621ed8c8d32b1565eb81ab84d1b1b977a34cf9266e39cb67",
41
"number": 11809864,
42
"parentHash": "0x487dae8c0eed44babad51a8eb09b36f1cf43784a8350b715ea7a4d7220a89cbc",
43
"timestamp": 1790713056
44
},
45
"finalized_l1": {
46
"hash": "0x2f4a598d8e163fc2bd07fe17845f5ca6a484329ba8a6ffc1b50a5cc531e24a95",
47
"number": 11809832,
48
"parentHash": "0x32cb9bb6b3898309b22910879ba4569ddc50e85a2bc1e401920670b58a520e13",
49
"timestamp": 1790712672
50
},
51
"unsafe_l2": {
52
"hash": "0xc735c6d8921dcb2cfa24c1f6791611f6cd6809984dade3a9e5d07f97c73f5b93",
53
"number": 42990845,
54
"parentHash": "0xb13f7cb79c072b1b1038248ff824b80c6e14e0306a5ce82d6c06cbedef0ce17d",
55
"timestamp": 1790668378,
56
"l1origin": {
57
"hash": "0xe48e2ad32f3e530d194a93e9693986f3faf197172905a283297735cfb9f895db",
58
"number": 11806312
59
},
60
"sequenceNumber": 5
61
},
62
"safe_l2": {
63
"hash": "0xc735c6d8921dcb2cfa24c1f6791611f6cd6809984dade3a9e5d07f97c73f5b93",
64
"number": 42990845,
65
"parentHash": "0xb13f7cb79c072b1b1038248ff824b80c6e14e0306a5ce82d6c06cbedef0ce17d",
66
"timestamp": 1790668378,
67
"l1origin": {
68
"hash": "0xe48e2ad32f3e530d194a93e9693986f3faf197172905a283297735cfb9f895db",
69
"number": 11806312
70
},
71
"sequenceNumber": 5
72
},
73
"finalized_l2": {
74
"hash": "0xcc7d16f8f8534c418a82870a0b7ec2485310a55cb8af60f921f9ce22d9f891be",
75
"number": 42990359,
76
"parentHash": "0x18f6a56ec1adacbd120578ae5b688490280b18bfe98fdf1c089eb242fd7c07ff",
77
"timestamp": 1790667406,
78
"l1origin": {
79
"hash": "0x8ba0728a5545b7f19ec4f369626ec811c97006c56bcd04ae5b8cefdc9b8c0919",
80
"number": 11806232
81
},
82
"sequenceNumber": 5
83
},
84
"pending_safe_l2": {
85
"hash": "0xc735c6d8921dcb2cfa24c1f6791611f6cd6809984dade3a9e5d07f97c73f5b93",
86
"number": 42990845,
87
"parentHash": "0xb13f7cb79c072b1b1038248ff824b80c6e14e0306a5ce82d6c06cbedef0ce17d",
88
"timestamp": 1790668378,
89
"l1origin": {
90
"hash": "0xe48e2ad32f3e530d194a93e9693986f3faf197172905a283297735cfb9f895db",
91
"number": 11806312
92
},
93
"sequenceNumber": 5
94
}
95
}
96
}
97
}
1
{
2
"jsonrpc": "2.0",
3
"id": 1,
4
"result": {
5
"version": "0x0000000000000000000000000000000000000000000000000000000000000000",
6
"outputRoot": "0x5f8c5c26bb445c415db91400b1e4a8ad7cc1adc48acdbc8801fc018749896891",
7
"blockRef": {
8
"hash": "0x54e5a1b8f9b2f620517ba0a93058df08459c26fa6bfa5be5cf4c45e607388daa",
9
"number": 52446,
10
"parentHash": "0x2f7c1275d3cc673470c19819e89824874fa12df8d91c86cdc0c768ac8aa18d67",
11
"timestamp": 1704791580,
12
"l1origin": {
13
"hash": "0xef61442f5deaa6c43b0d9fea3307c66635cbe450752b2a8d3b19b48c653fb2ec",
14
"number": 5052297
15
},
16
"sequenceNumber": 0
17
},
18
"withdrawalStorageRoot": "0x8ed4baae3a927be3dea54996b4d5899f8c01e7594bf50b17dc1e741388ce3d12",
19
"stateRoot": "0x24aa7f8c41cc73e7c4f6a513d756f28a2a0a1e1dc983bfa1346832ef69731562",
20
"syncStatus": {
21
"current_l1": {
22
"hash": "0x4515dbcb99e792702772ecac4eb612c04ac3ca5a4555b7a45ea72a54414c5c79",
23
"number": 11809912,
24
"parentHash": "0xd2579069ed89ad729d5efce0e3931a4993d8b16eab2808996dde3b688bb22a4e",
25
"timestamp": 1790713632
26
},
27
"current_l1_finalized": {
28
"hash": "0x2f4a598d8e163fc2bd07fe17845f5ca6a484329ba8a6ffc1b50a5cc531e24a95",
29
"number": 11809832,
30
"parentHash": "0x32cb9bb6b3898309b22910879ba4569ddc50e85a2bc1e401920670b58a520e13",
31
"timestamp": 1790712672
32
},
33
"head_l1": {
34
"hash": "0x4515dbcb99e792702772ecac4eb612c04ac3ca5a4555b7a45ea72a54414c5c79",
35
"number": 11809912,
36
"parentHash": "0xd2579069ed89ad729d5efce0e3931a4993d8b16eab2808996dde3b688bb22a4e",
37
"timestamp": 1790713632
38
},
39
"safe_l1": {
40
"hash": "0xe53e889dfc93566a621ed8c8d32b1565eb81ab84d1b1b977a34cf9266e39cb67",
41
"number": 11809864,
42
"parentHash": "0x487dae8c0eed44babad51a8eb09b36f1cf43784a8350b715ea7a4d7220a89cbc",
43
"timestamp": 1790713056
44
},
45
"finalized_l1": {
46
"hash": "0x2f4a598d8e163fc2bd07fe17845f5ca6a484329ba8a6ffc1b50a5cc531e24a95",
47
"number": 11809832,
48
"parentHash": "0x32cb9bb6b3898309b22910879ba4569ddc50e85a2bc1e401920670b58a520e13",
49
"timestamp": 1790712672
50
},
51
"unsafe_l2": {
52
"hash": "0xc735c6d8921dcb2cfa24c1f6791611f6cd6809984dade3a9e5d07f97c73f5b93",
53
"number": 42990845,
54
"parentHash": "0xb13f7cb79c072b1b1038248ff824b80c6e14e0306a5ce82d6c06cbedef0ce17d",
55
"timestamp": 1790668378,
56
"l1origin": {
57
"hash": "0xe48e2ad32f3e530d194a93e9693986f3faf197172905a283297735cfb9f895db",
58
"number": 11806312
59
},
60
"sequenceNumber": 5
61
},
62
"safe_l2": {
63
"hash": "0xc735c6d8921dcb2cfa24c1f6791611f6cd6809984dade3a9e5d07f97c73f5b93",
64
"number": 42990845,
65
"parentHash": "0xb13f7cb79c072b1b1038248ff824b80c6e14e0306a5ce82d6c06cbedef0ce17d",
66
"timestamp": 1790668378,
67
"l1origin": {
68
"hash": "0xe48e2ad32f3e530d194a93e9693986f3faf197172905a283297735cfb9f895db",
69
"number": 11806312
70
},
71
"sequenceNumber": 5
72
},
73
"finalized_l2": {
74
"hash": "0xcc7d16f8f8534c418a82870a0b7ec2485310a55cb8af60f921f9ce22d9f891be",
75
"number": 42990359,
76
"parentHash": "0x18f6a56ec1adacbd120578ae5b688490280b18bfe98fdf1c089eb242fd7c07ff",
77
"timestamp": 1790667406,
78
"l1origin": {
79
"hash": "0x8ba0728a5545b7f19ec4f369626ec811c97006c56bcd04ae5b8cefdc9b8c0919",
80
"number": 11806232
81
},
82
"sequenceNumber": 5
83
},
84
"pending_safe_l2": {
85
"hash": "0xc735c6d8921dcb2cfa24c1f6791611f6cd6809984dade3a9e5d07f97c73f5b93",
86
"number": 42990845,
87
"parentHash": "0xb13f7cb79c072b1b1038248ff824b80c6e14e0306a5ce82d6c06cbedef0ce17d",
88
"timestamp": 1790668378,
89
"l1origin": {
90
"hash": "0xe48e2ad32f3e530d194a93e9693986f3faf197172905a283297735cfb9f895db",
91
"number": 11806312
92
},
93
"sequenceNumber": 5
94
}
95
}
96
}
97
}
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