feat(specs): create Amsterdam fork from Osaka

Author: fselmo

src/ethereum/forks/amsterdam/__init__.py

@@ -0,0 +1,55 @@
+"""
+The Amsterdam fork ([EIP-7607]) includes networking changes (peerDAS), increases
+the gas cost while limiting the input size of the `MODEXP` precompile, limits
+the maximum gas per transaction, raises the blob base fee to always be above
+the execution cost, limits the RLP-encoded size of blocks, introduces a count
+leading zeros (`CLZ`) instruction, and adds a new precompile supporting the
+secp256r1 curve.
+
+### Notices
+
+- [EIP-7935: Set default gas limit to XX0M][EIP-7935]
+
+### Changes
+
+- [EIP-7594: PeerDAS - Peer Data Availability Sampling][EIP-7594]
+- [EIP-7823: Set upper bounds for MODEXP][EIP-7823]
+- [EIP-7825: Transaction Gas Limit Cap][EIP-7825]
+- [EIP-7883: ModExp Gas Cost Increase][EIP-7883]
+- [EIP-7918: Blob base fee bounded by execution cost][EIP-7918]
+- [EIP-7934: RLP Execution Block Size Limit][EIP-7934]
+- [EIP-7939: Count leading zeros (CLZ) opcode][EIP-7939]
+- [EIP-7951: Precompile for secp256r1 Curve Support][EIP-7951]
+- [EIP-7892: Blob Parameter Only Hardforks][EIP-7892]
+- [EIP-7642: eth/69 - history expiry and simpler receipts][EIP-7642]
+- [EIP-7910: eth_config JSON-RPC Method][EIP-7910]
+
+### Upgrade Schedule
+
+| Network | Timestamp    | Date & Time (UTC)       | Fork Hash    | Beacon Chain Epoch |
+|---------|--------------|-------------------------|--------------| ------------------ |
+| Holesky | `          ` |     -  -     :  :       | `0x        ` |                    |
+| Sepolia | `          ` |     -  -     :  :       | `0x        ` |                    |
+| Hoodi   | `          ` |     -  -     :  :       | `0x        ` |                    |
+| Mainnet | `          ` |     -  -     :  :       | `0x        ` |                    |
+
+### Releases
+
+[EIP-7607]: https://eips.ethereum.org/EIPS/eip-7607
+[EIP-7594]: https://eips.ethereum.org/EIPS/eip-7594
+[EIP-7823]: https://eips.ethereum.org/EIPS/eip-7823
+[EIP-7825]: https://eips.ethereum.org/EIPS/eip-7825
+[EIP-7883]: https://eips.ethereum.org/EIPS/eip-7883
+[EIP-7918]: https://eips.ethereum.org/EIPS/eip-7918
+[EIP-7934]: https://eips.ethereum.org/EIPS/eip-7934
+[EIP-7935]: https://eips.ethereum.org/EIPS/eip-7935
+[EIP-7939]: https://eips.ethereum.org/EIPS/eip-7939
+[EIP-7951]: https://eips.ethereum.org/EIPS/eip-7951
+[EIP-7892]: https://eips.ethereum.org/EIPS/eip-7892
+[EIP-7642]: https://eips.ethereum.org/EIPS/eip-7642
+[EIP-7910]: https://eips.ethereum.org/EIPS/eip-7910
+"""  # noqa: E501
+
+from ethereum.fork_criteria import Unscheduled
+
+FORK_CRITERIA = Unscheduled(order_index=1)