L2 part of the bridge

.github/CODEOWNERS

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+* @maciejka

.github/linter/base_style.rb

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+all
+# lame rules
+exclude_rule 'MD002'
+exclude_rule 'MD041'

.github/linter/readme_style.rb

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+all
+# allow inline HTML for README fmt
+exclude_rule 'MD033'
+# badges trigger rule
+exclude_rule 'MD034'
+# README img serves as 'First Header'
+exclude_rule 'MD002'
+exclude_rule 'MD041'
+# TODO: disable/enable not working for all-contribs
+exclude_rule 'MD013'
+# Allow no endline at the end
+exclude_rule 'MD047'

.github/workflows/build.yml

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+name: build
+
+on:
+  workflow_dispatch:
+  push:
+    branches:
+      - main
+  pull_request:
+permissions: read-all
+
+jobs:
+  l2-check:
+    runs-on: ubuntu-latest
+    defaults:
+      run:
+        working-directory: ./l2
+    steps:
+      - uses: actions/checkout@v4
+      - uses: software-mansion/setup-scarb@v1
+        with:
+          scarb-version: "2.9.1"
+      - uses: foundry-rs/setup-snfoundry@v3
+        with:
+          starknet-foundry-version: 0.34.0        
+      - run: pwd
+      - run: scarb --version
+      - run: scarb fmt --check
+      - run: scarb build

.github/workflows/check.yml

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+name: check
+
+on:
+  workflow_dispatch:
+  push:
+    branches:
+      - main
+  pull_request:
+permissions: read-all
+
+jobs:
+  markdown:
+    runs-on: ubuntu-latest
+    steps:
+      - uses: actions/checkout@v4
+      - run: |
+          sudo gem install mdl
+          mdl -s .github/linter/readme_style.rb README.md
+          mdl -s .github/linter/base_style.rb .github
+
+  l2-test:
+    runs-on: ubuntu-latest
+    defaults:
+      run:
+        working-directory: ./l2
+    steps:
+      - uses: actions/checkout@v4
+      - uses: software-mansion/setup-scarb@v1
+        with:
+          scarb-version: "2.9.1"
+      - uses: foundry-rs/setup-snfoundry@v3
+        with:
+          starknet-foundry-version: 0.34.0                  
+      - run: pwd
+      - run: scarb --version
+      - run: scarb test

.gitignore

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+# Generated by Cargo
+# will have compiled files and executables
+debug/
+target/
+.snfoundry_cache

README.md

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 # Pontis
+
 `OP_CAT` enabled Bitcoin <> Starknet Bridge POC
 
 <p align="center" width="100%">

l2/Scarb.lock

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+# Code generated by scarb DO NOT EDIT.
+version = 1
+
+[[package]]
+name = "openzeppelin_access"
+version = "0.20.0"
+source = "registry+https://scarbs.xyz/"
+checksum = "sha256:7734901a0ca7a7065e69416fea615dd1dc586c8dc9e76c032f25ee62e8b2a06c"
+dependencies = [
+ "openzeppelin_introspection",
+]
+
+[[package]]
+name = "openzeppelin_account"
+version = "0.20.0"
+source = "registry+https://scarbs.xyz/"
+checksum = "sha256:1aa3a71e2f40f66f98d96aa9bf9f361f53db0fd20fa83ef7df04426a3c3a926a"
+dependencies = [
+ "openzeppelin_introspection",
+ "openzeppelin_utils",
+]
+
+[[package]]
+name = "openzeppelin_introspection"
+version = "0.20.0"
+source = "registry+https://scarbs.xyz/"
+checksum = "sha256:13e04a2190684e6804229a77a6c56de7d033db8b9ef519e5e8dee400a70d8a3d"
+
+[[package]]
+name = "openzeppelin_token"
+version = "0.20.0"
+source = "registry+https://scarbs.xyz/"
+checksum = "sha256:4452f449dc6c1ea97cf69d1d9182749abd40e85bd826cd79652c06a627eafd91"
+dependencies = [
+ "openzeppelin_access",
+ "openzeppelin_account",
+ "openzeppelin_introspection",
+ "openzeppelin_utils",
+]
+
+[[package]]
+name = "openzeppelin_utils"
+version = "0.20.0"
+source = "registry+https://scarbs.xyz/"
+checksum = "sha256:44f32d242af1e43982decc49c563e613a9b67ade552f5c3d5cde504e92f74607"
+
+[[package]]
+name = "pontis"
+version = "0.1.0"
+dependencies = [
+ "openzeppelin_access",
+ "openzeppelin_token",
+ "snforge_std",
+]
+
+[[package]]
+name = "snforge_scarb_plugin"
+version = "0.34.0"
+source = "git+https://github.com/foundry-rs/starknet-foundry?tag=v0.34.0#d6976d4635cbe69bd199fd502788c469d408ed2d"
+
+[[package]]
+name = "snforge_std"
+version = "0.34.0"
+source = "git+https://github.com/foundry-rs/starknet-foundry?tag=v0.34.0#d6976d4635cbe69bd199fd502788c469d408ed2d"
+dependencies = [
+ "snforge_scarb_plugin",
+]

l2/Scarb.toml

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+[package]
+name = "pontis"
+version = "0.1.0"
+edition = "2024_07"
+
+# See more keys and their definitions at https://docs.swmansion.com/scarb/docs/reference/manifest.html
+
+[dependencies]
+starknet = "2.9.1"
+openzeppelin_token = "0.20.0"
+openzeppelin_access = "0.20.0"
+
+[dev-dependencies]
+snforge_std = { git = "https://github.com/foundry-rs/starknet-foundry", tag = "v0.34.0" }
+assert_macros = "2.9.1"
+
+[[target.starknet-contract]]
+sierra = true
+
+[scripts]
+test = "snforge test"
+
+# Visit https://foundry-rs.github.io/starknet-foundry/appendix/scarb-toml.html for more information
+
+# [tool.snforge]                                             # Define `snforge` tool section
+# exit_first = true                                          # Stop tests execution immediately upon the first failure
+# fuzzer_runs = 1234                                         # Number of runs of the random fuzzer
+# fuzzer_seed = 1111                                         # Seed for the random fuzzer
+
+# [[tool.snforge.fork]]                                      # Used for fork testing
+# name = "SOME_NAME"                                         # Fork name
+# url = "http://your.rpc.url"                                # Url of the RPC provider
+# block_id.tag = "latest"                                    # Block to fork from (block tag)
+
+# [[tool.snforge.fork]]
+# name = "SOME_SECOND_NAME"
+# url = "http://your.second.rpc.url"                         
+# block_id.number = "123"                                    # Block to fork from (block number)
+
+# [[tool.snforge.fork]]
+# name = "SOME_THIRD_NAME"
+# url = "http://your.third.rpc.url"
+# block_id.hash = "0x123"                                    # Block to fork from (block hash)
+
+# [profile.dev.cairo]                                        # Configure Cairo compiler
+# unstable-add-statements-code-locations-debug-info = true   # Should be used if you want to use coverage
+# unstable-add-statements-functions-debug-info = true        # Should be used if you want to use coverage/profiler
+# inlining-strategy = "avoid"                                # Should be used if you want to use coverage
+
+# [features]                                                 # Used for conditional compilation
+# enable_for_tests = []                                      # Feature name and list of other features that should be enabled with it

l2/snfoundry.toml

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+# Visit https://foundry-rs.github.io/starknet-foundry/appendix/snfoundry-toml.html
+# and https://foundry-rs.github.io/starknet-foundry/projects/configuration.html for more information
+
+# [sncast.default]                                         # Define a profile name
+# url = "https://free-rpc.nethermind.io/sepolia-juno/v0_7" # Url of the RPC provider
+# accounts-file = "../account-file"                        # Path to the file with the account data
+# account = "mainuser"                                     # Account from `accounts_file` or default account file that will be used for the transactions
+# keystore = "~/keystore"                                  # Path to the keystore file
+# wait-params = { timeout = 300, retry-interval = 10 }     # Wait for submitted transaction parameters
+# block-explorer = "StarkScan"                             # Block explorer service used to display links to transaction details
+# show-explorer-links = true                               # Print links pointing to pages with transaction details in the chosen block explorer