diff --git a/cairo_programs/syscalls.cairo b/cairo_programs/syscalls.cairo
new file mode 100644
index 0000000..52f7fae
--- /dev/null
+++ b/cairo_programs/syscalls.cairo
@@ -0,0 +1,9 @@
+%builtins syscall
+
+from starkware.starknet.common.syscalls import get_block_number
+
+func main{syscall_ptr : felt*}() {
+    let (block_number) = get_block_number();
+    %{ print(ids.block_number) %}
+    return ();
+}
diff --git a/cairo_programs/syscalls.json b/cairo_programs/syscalls.json
new file mode 100644
index 0000000..7a0489b
--- /dev/null
+++ b/cairo_programs/syscalls.json
@@ -0,0 +1,982 @@
+{
+    "attributes": [],
+    "builtins": [
+        "syscall"
+    ],
+    "compiler_version": "0.13.2",
+    "data": [
+        "0x40780017fff7fff",
+        "0x1",
+        "0x1104800180018000",
+        "0xb",
+        "0x10780017fff7fff",
+        "0x0",
+        "0x480680017fff8000",
+        "0x476574426c6f636b4e756d626572",
+        "0x400280007ffd7fff",
+        "0x482680017ffd8000",
+        "0x2",
+        "0x480280017ffd8000",
+        "0x208b7fff7fff7ffe",
+        "0x480a7ffd7fff8000",
+        "0x1104800180018000",
+        "0x800000000000010fffffffffffffffffffffffffffffffffffffffffffffff9",
+        "0x48127ffe7fff8000",
+        "0x208b7fff7fff7ffe"
+    ],
+    "debug_info": null,
+    "hints": {
+        "9": [
+            {
+                "accessible_scopes": [
+                    "starkware.starknet.common.syscalls",
+                    "starkware.starknet.common.syscalls.get_block_number"
+                ],
+                "code": "syscall_handler.get_block_number(segments=segments, syscall_ptr=ids.syscall_ptr)",
+                "flow_tracking_data": {
+                    "ap_tracking": {
+                        "group": 2,
+                        "offset": 1
+                    },
+                    "reference_ids": {
+                        "starkware.starknet.common.syscalls.get_block_number.__temp0": 2,
+                        "starkware.starknet.common.syscalls.get_block_number.syscall": 1,
+                        "starkware.starknet.common.syscalls.get_block_number.syscall_ptr": 0
+                    }
+                }
+            }
+        ],
+        "16": [
+            {
+                "accessible_scopes": [
+                    "__main__",
+                    "__main__.main"
+                ],
+                "code": "print(ids.block_number)",
+                "flow_tracking_data": {
+                    "ap_tracking": {
+                        "group": 3,
+                        "offset": 6
+                    },
+                    "reference_ids": {
+                        "__main__.main.block_number": 6,
+                        "__main__.main.syscall_ptr": 5
+                    }
+                }
+            }
+        ]
+    },
+    "identifiers": {
+        "__main__.__end__": {
+            "pc": 4,
+            "type": "label"
+        },
+        "__main__.__start__": {
+            "pc": 0,
+            "type": "label"
+        },
+        "__main__.get_block_number": {
+            "destination": "starkware.starknet.common.syscalls.get_block_number",
+            "type": "alias"
+        },
+        "__main__.main": {
+            "decorators": [],
+            "pc": 13,
+            "type": "function"
+        },
+        "__main__.main.Args": {
+            "full_name": "__main__.main.Args",
+            "members": {},
+            "size": 0,
+            "type": "struct"
+        },
+        "__main__.main.ImplicitArgs": {
+            "full_name": "__main__.main.ImplicitArgs",
+            "members": {
+                "syscall_ptr": {
+                    "cairo_type": "felt*",
+                    "offset": 0
+                }
+            },
+            "size": 1,
+            "type": "struct"
+        },
+        "__main__.main.Return": {
+            "cairo_type": "()",
+            "type": "type_definition"
+        },
+        "__main__.main.SIZEOF_LOCALS": {
+            "type": "const",
+            "value": 0
+        },
+        "__main__.main.block_number": {
+            "cairo_type": "felt",
+            "full_name": "__main__.main.block_number",
+            "references": [
+                {
+                    "ap_tracking_data": {
+                        "group": 3,
+                        "offset": 6
+                    },
+                    "pc": 16,
+                    "value": "[cast(ap + (-1), felt*)]"
+                }
+            ],
+            "type": "reference"
+        },
+        "__main__.main.syscall_ptr": {
+            "cairo_type": "felt*",
+            "full_name": "__main__.main.syscall_ptr",
+            "references": [
+                {
+                    "ap_tracking_data": {
+                        "group": 3,
+                        "offset": 0
+                    },
+                    "pc": 13,
+                    "value": "[cast(fp + (-3), felt**)]"
+                },
+                {
+                    "ap_tracking_data": {
+                        "group": 3,
+                        "offset": 6
+                    },
+                    "pc": 16,
+                    "value": "[cast(ap + (-2), felt**)]"
+                }
+            ],
+            "type": "reference"
+        },
+        "starkware.cairo.common.dict_access.DictAccess": {
+            "full_name": "starkware.cairo.common.dict_access.DictAccess",
+            "members": {
+                "key": {
+                    "cairo_type": "felt",
+                    "offset": 0
+                },
+                "new_value": {
+                    "cairo_type": "felt",
+                    "offset": 2
+                },
+                "prev_value": {
+                    "cairo_type": "felt",
+                    "offset": 1
+                }
+            },
+            "size": 3,
+            "type": "struct"
+        },
+        "starkware.starknet.common.syscalls.CALL_CONTRACT_SELECTOR": {
+            "type": "const",
+            "value": 20853273475220472486191784820
+        },
+        "starkware.starknet.common.syscalls.CallContract": {
+            "full_name": "starkware.starknet.common.syscalls.CallContract",
+            "members": {
+                "request": {
+                    "cairo_type": "starkware.starknet.common.syscalls.CallContractRequest",
+                    "offset": 0
+                },
+                "response": {
+                    "cairo_type": "starkware.starknet.common.syscalls.CallContractResponse",
+                    "offset": 5
+                }
+            },
+            "size": 7,
+            "type": "struct"
+        },
+        "starkware.starknet.common.syscalls.CallContractRequest": {
+            "full_name": "starkware.starknet.common.syscalls.CallContractRequest",
+            "members": {
+                "calldata": {
+                    "cairo_type": "felt*",
+                    "offset": 4
+                },
+                "calldata_size": {
+                    "cairo_type": "felt",
+                    "offset": 3
+                },
+                "contract_address": {
+                    "cairo_type": "felt",
+                    "offset": 1
+                },
+                "function_selector": {
+                    "cairo_type": "felt",
+                    "offset": 2
+                },
+                "selector": {
+                    "cairo_type": "felt",
+                    "offset": 0
+                }
+            },
+            "size": 5,
+            "type": "struct"
+        },
+        "starkware.starknet.common.syscalls.CallContractResponse": {
+            "full_name": "starkware.starknet.common.syscalls.CallContractResponse",
+            "members": {
+                "retdata": {
+                    "cairo_type": "felt*",
+                    "offset": 1
+                },
+                "retdata_size": {
+                    "cairo_type": "felt",
+                    "offset": 0
+                }
+            },
+            "size": 2,
+            "type": "struct"
+        },
+        "starkware.starknet.common.syscalls.DELEGATE_CALL_SELECTOR": {
+            "type": "const",
+            "value": 21167594061783206823196716140
+        },
+        "starkware.starknet.common.syscalls.DELEGATE_L1_HANDLER_SELECTOR": {
+            "type": "const",
+            "value": 23274015802972845247556842986379118667122
+        },
+        "starkware.starknet.common.syscalls.DEPLOY_SELECTOR": {
+            "type": "const",
+            "value": 75202468540281
+        },
+        "starkware.starknet.common.syscalls.Deploy": {
+            "full_name": "starkware.starknet.common.syscalls.Deploy",
+            "members": {
+                "request": {
+                    "cairo_type": "starkware.starknet.common.syscalls.DeployRequest",
+                    "offset": 0
+                },
+                "response": {
+                    "cairo_type": "starkware.starknet.common.syscalls.DeployResponse",
+                    "offset": 6
+                }
+            },
+            "size": 9,
+            "type": "struct"
+        },
+        "starkware.starknet.common.syscalls.DeployRequest": {
+            "full_name": "starkware.starknet.common.syscalls.DeployRequest",
+            "members": {
+                "class_hash": {
+                    "cairo_type": "felt",
+                    "offset": 1
+                },
+                "constructor_calldata": {
+                    "cairo_type": "felt*",
+                    "offset": 4
+                },
+                "constructor_calldata_size": {
+                    "cairo_type": "felt",
+                    "offset": 3
+                },
+                "contract_address_salt": {
+                    "cairo_type": "felt",
+                    "offset": 2
+                },
+                "deploy_from_zero": {
+                    "cairo_type": "felt",
+                    "offset": 5
+                },
+                "selector": {
+                    "cairo_type": "felt",
+                    "offset": 0
+                }
+            },
+            "size": 6,
+            "type": "struct"
+        },
+        "starkware.starknet.common.syscalls.DeployResponse": {
+            "full_name": "starkware.starknet.common.syscalls.DeployResponse",
+            "members": {
+                "constructor_retdata": {
+                    "cairo_type": "felt*",
+                    "offset": 2
+                },
+                "constructor_retdata_size": {
+                    "cairo_type": "felt",
+                    "offset": 1
+                },
+                "contract_address": {
+                    "cairo_type": "felt",
+                    "offset": 0
+                }
+            },
+            "size": 3,
+            "type": "struct"
+        },
+        "starkware.starknet.common.syscalls.DictAccess": {
+            "destination": "starkware.cairo.common.dict_access.DictAccess",
+            "type": "alias"
+        },
+        "starkware.starknet.common.syscalls.EMIT_EVENT_SELECTOR": {
+            "type": "const",
+            "value": 1280709301550335749748
+        },
+        "starkware.starknet.common.syscalls.EmitEvent": {
+            "full_name": "starkware.starknet.common.syscalls.EmitEvent",
+            "members": {
+                "data": {
+                    "cairo_type": "felt*",
+                    "offset": 4
+                },
+                "data_len": {
+                    "cairo_type": "felt",
+                    "offset": 3
+                },
+                "keys": {
+                    "cairo_type": "felt*",
+                    "offset": 2
+                },
+                "keys_len": {
+                    "cairo_type": "felt",
+                    "offset": 1
+                },
+                "selector": {
+                    "cairo_type": "felt",
+                    "offset": 0
+                }
+            },
+            "size": 5,
+            "type": "struct"
+        },
+        "starkware.starknet.common.syscalls.GET_BLOCK_NUMBER_SELECTOR": {
+            "type": "const",
+            "value": 1448089106835523001438702345020786
+        },
+        "starkware.starknet.common.syscalls.GET_BLOCK_TIMESTAMP_SELECTOR": {
+            "type": "const",
+            "value": 24294903732626645868215235778792757751152
+        },
+        "starkware.starknet.common.syscalls.GET_CALLER_ADDRESS_SELECTOR": {
+            "type": "const",
+            "value": 94901967781393078444254803017658102643
+        },
+        "starkware.starknet.common.syscalls.GET_CONTRACT_ADDRESS_SELECTOR": {
+            "type": "const",
+            "value": 6219495360805491471215297013070624192820083
+        },
+        "starkware.starknet.common.syscalls.GET_SEQUENCER_ADDRESS_SELECTOR": {
+            "type": "const",
+            "value": 1592190833581991703053805829594610833820054387
+        },
+        "starkware.starknet.common.syscalls.GET_TX_INFO_SELECTOR": {
+            "type": "const",
+            "value": 1317029390204112103023
+        },
+        "starkware.starknet.common.syscalls.GET_TX_SIGNATURE_SELECTOR": {
+            "type": "const",
+            "value": 1448089128652340074717162277007973
+        },
+        "starkware.starknet.common.syscalls.GetBlockNumber": {
+            "full_name": "starkware.starknet.common.syscalls.GetBlockNumber",
+            "members": {
+                "request": {
+                    "cairo_type": "starkware.starknet.common.syscalls.GetBlockNumberRequest",
+                    "offset": 0
+                },
+                "response": {
+                    "cairo_type": "starkware.starknet.common.syscalls.GetBlockNumberResponse",
+                    "offset": 1
+                }
+            },
+            "size": 2,
+            "type": "struct"
+        },
+        "starkware.starknet.common.syscalls.GetBlockNumberRequest": {
+            "full_name": "starkware.starknet.common.syscalls.GetBlockNumberRequest",
+            "members": {
+                "selector": {
+                    "cairo_type": "felt",
+                    "offset": 0
+                }
+            },
+            "size": 1,
+            "type": "struct"
+        },
+        "starkware.starknet.common.syscalls.GetBlockNumberResponse": {
+            "full_name": "starkware.starknet.common.syscalls.GetBlockNumberResponse",
+            "members": {
+                "block_number": {
+                    "cairo_type": "felt",
+                    "offset": 0
+                }
+            },
+            "size": 1,
+            "type": "struct"
+        },
+        "starkware.starknet.common.syscalls.GetBlockTimestamp": {
+            "full_name": "starkware.starknet.common.syscalls.GetBlockTimestamp",
+            "members": {
+                "request": {
+                    "cairo_type": "starkware.starknet.common.syscalls.GetBlockTimestampRequest",
+                    "offset": 0
+                },
+                "response": {
+                    "cairo_type": "starkware.starknet.common.syscalls.GetBlockTimestampResponse",
+                    "offset": 1
+                }
+            },
+            "size": 2,
+            "type": "struct"
+        },
+        "starkware.starknet.common.syscalls.GetBlockTimestampRequest": {
+            "full_name": "starkware.starknet.common.syscalls.GetBlockTimestampRequest",
+            "members": {
+                "selector": {
+                    "cairo_type": "felt",
+                    "offset": 0
+                }
+            },
+            "size": 1,
+            "type": "struct"
+        },
+        "starkware.starknet.common.syscalls.GetBlockTimestampResponse": {
+            "full_name": "starkware.starknet.common.syscalls.GetBlockTimestampResponse",
+            "members": {
+                "block_timestamp": {
+                    "cairo_type": "felt",
+                    "offset": 0
+                }
+            },
+            "size": 1,
+            "type": "struct"
+        },
+        "starkware.starknet.common.syscalls.GetCallerAddress": {
+            "full_name": "starkware.starknet.common.syscalls.GetCallerAddress",
+            "members": {
+                "request": {
+                    "cairo_type": "starkware.starknet.common.syscalls.GetCallerAddressRequest",
+                    "offset": 0
+                },
+                "response": {
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+                    "offset": 1
+                }
+            },
+            "size": 2,
+            "type": "struct"
+        },
+        "starkware.starknet.common.syscalls.GetCallerAddressRequest": {
+            "full_name": "starkware.starknet.common.syscalls.GetCallerAddressRequest",
+            "members": {
+                "selector": {
+                    "cairo_type": "felt",
+                    "offset": 0
+                }
+            },
+            "size": 1,
+            "type": "struct"
+        },
+        "starkware.starknet.common.syscalls.GetCallerAddressResponse": {
+            "full_name": "starkware.starknet.common.syscalls.GetCallerAddressResponse",
+            "members": {
+                "caller_address": {
+                    "cairo_type": "felt",
+                    "offset": 0
+                }
+            },
+            "size": 1,
+            "type": "struct"
+        },
+        "starkware.starknet.common.syscalls.GetContractAddress": {
+            "full_name": "starkware.starknet.common.syscalls.GetContractAddress",
+            "members": {
+                "request": {
+                    "cairo_type": "starkware.starknet.common.syscalls.GetContractAddressRequest",
+                    "offset": 0
+                },
+                "response": {
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+                    "offset": 1
+                }
+            },
+            "size": 2,
+            "type": "struct"
+        },
+        "starkware.starknet.common.syscalls.GetContractAddressRequest": {
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+            "members": {
+                "selector": {
+                    "cairo_type": "felt",
+                    "offset": 0
+                }
+            },
+            "size": 1,
+            "type": "struct"
+        },
+        "starkware.starknet.common.syscalls.GetContractAddressResponse": {
+            "full_name": "starkware.starknet.common.syscalls.GetContractAddressResponse",
+            "members": {
+                "contract_address": {
+                    "cairo_type": "felt",
+                    "offset": 0
+                }
+            },
+            "size": 1,
+            "type": "struct"
+        },
+        "starkware.starknet.common.syscalls.GetSequencerAddress": {
+            "full_name": "starkware.starknet.common.syscalls.GetSequencerAddress",
+            "members": {
+                "request": {
+                    "cairo_type": "starkware.starknet.common.syscalls.GetSequencerAddressRequest",
+                    "offset": 0
+                },
+                "response": {
+                    "cairo_type": "starkware.starknet.common.syscalls.GetSequencerAddressResponse",
+                    "offset": 1
+                }
+            },
+            "size": 2,
+            "type": "struct"
+        },
+        "starkware.starknet.common.syscalls.GetSequencerAddressRequest": {
+            "full_name": "starkware.starknet.common.syscalls.GetSequencerAddressRequest",
+            "members": {
+                "selector": {
+                    "cairo_type": "felt",
+                    "offset": 0
+                }
+            },
+            "size": 1,
+            "type": "struct"
+        },
+        "starkware.starknet.common.syscalls.GetSequencerAddressResponse": {
+            "full_name": "starkware.starknet.common.syscalls.GetSequencerAddressResponse",
+            "members": {
+                "sequencer_address": {
+                    "cairo_type": "felt",
+                    "offset": 0
+                }
+            },
+            "size": 1,
+            "type": "struct"
+        },
+        "starkware.starknet.common.syscalls.GetTxInfo": {
+            "full_name": "starkware.starknet.common.syscalls.GetTxInfo",
+            "members": {
+                "request": {
+                    "cairo_type": "starkware.starknet.common.syscalls.GetTxInfoRequest",
+                    "offset": 0
+                },
+                "response": {
+                    "cairo_type": "starkware.starknet.common.syscalls.GetTxInfoResponse",
+                    "offset": 1
+                }
+            },
+            "size": 2,
+            "type": "struct"
+        },
+        "starkware.starknet.common.syscalls.GetTxInfoRequest": {
+            "full_name": "starkware.starknet.common.syscalls.GetTxInfoRequest",
+            "members": {
+                "selector": {
+                    "cairo_type": "felt",
+                    "offset": 0
+                }
+            },
+            "size": 1,
+            "type": "struct"
+        },
+        "starkware.starknet.common.syscalls.GetTxInfoResponse": {
+            "full_name": "starkware.starknet.common.syscalls.GetTxInfoResponse",
+            "members": {
+                "tx_info": {
+                    "cairo_type": "starkware.starknet.common.syscalls.TxInfo*",
+                    "offset": 0
+                }
+            },
+            "size": 1,
+            "type": "struct"
+        },
+        "starkware.starknet.common.syscalls.GetTxSignature": {
+            "full_name": "starkware.starknet.common.syscalls.GetTxSignature",
+            "members": {
+                "request": {
+                    "cairo_type": "starkware.starknet.common.syscalls.GetTxSignatureRequest",
+                    "offset": 0
+                },
+                "response": {
+                    "cairo_type": "starkware.starknet.common.syscalls.GetTxSignatureResponse",
+                    "offset": 1
+                }
+            },
+            "size": 3,
+            "type": "struct"
+        },
+        "starkware.starknet.common.syscalls.GetTxSignatureRequest": {
+            "full_name": "starkware.starknet.common.syscalls.GetTxSignatureRequest",
+            "members": {
+                "selector": {
+                    "cairo_type": "felt",
+                    "offset": 0
+                }
+            },
+            "size": 1,
+            "type": "struct"
+        },
+        "starkware.starknet.common.syscalls.GetTxSignatureResponse": {
+            "full_name": "starkware.starknet.common.syscalls.GetTxSignatureResponse",
+            "members": {
+                "signature": {
+                    "cairo_type": "felt*",
+                    "offset": 1
+                },
+                "signature_len": {
+                    "cairo_type": "felt",
+                    "offset": 0
+                }
+            },
+            "size": 2,
+            "type": "struct"
+        },
+        "starkware.starknet.common.syscalls.LIBRARY_CALL_L1_HANDLER_SELECTOR": {
+            "type": "const",
+            "value": 436233452754198157705746250789557519228244616562
+        },
+        "starkware.starknet.common.syscalls.LIBRARY_CALL_SELECTOR": {
+            "type": "const",
+            "value": 92376026794327011772951660
+        },
+        "starkware.starknet.common.syscalls.LibraryCall": {
+            "full_name": "starkware.starknet.common.syscalls.LibraryCall",
+            "members": {
+                "request": {
+                    "cairo_type": "starkware.starknet.common.syscalls.LibraryCallRequest",
+                    "offset": 0
+                },
+                "response": {
+                    "cairo_type": "starkware.starknet.common.syscalls.CallContractResponse",
+                    "offset": 5
+                }
+            },
+            "size": 7,
+            "type": "struct"
+        },
+        "starkware.starknet.common.syscalls.LibraryCallRequest": {
+            "full_name": "starkware.starknet.common.syscalls.LibraryCallRequest",
+            "members": {
+                "calldata": {
+                    "cairo_type": "felt*",
+                    "offset": 4
+                },
+                "calldata_size": {
+                    "cairo_type": "felt",
+                    "offset": 3
+                },
+                "class_hash": {
+                    "cairo_type": "felt",
+                    "offset": 1
+                },
+                "function_selector": {
+                    "cairo_type": "felt",
+                    "offset": 2
+                },
+                "selector": {
+                    "cairo_type": "felt",
+                    "offset": 0
+                }
+            },
+            "size": 5,
+            "type": "struct"
+        },
+        "starkware.starknet.common.syscalls.REPLACE_CLASS_SELECTOR": {
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