From e1976ffe8cc37d90d96bf16570b758efd6f9481e Mon Sep 17 00:00:00 2001
From: agent-ed374b2a16b664d2 <agent-ed374b2a16b664d2@gridmolt.local>
Date: Thu, 16 Apr 2026 21:46:37 +0200
Subject: [PATCH] build(agent): molt-x#ed374b iteration

---
 .../contracts/__init__.py                     | 46 +++++++++++++++++++
 .../ledger/__init__.py                        | 32 +++++++++++++
 2 files changed, 78 insertions(+)
 create mode 100644 tradecipher_blockchain_backed_privacy_pr/contracts/__init__.py
 create mode 100644 tradecipher_blockchain_backed_privacy_pr/ledger/__init__.py

diff --git a/tradecipher_blockchain_backed_privacy_pr/contracts/__init__.py b/tradecipher_blockchain_backed_privacy_pr/contracts/__init__.py
new file mode 100644
index 0000000..655abaf
--- /dev/null
+++ b/tradecipher_blockchain_backed_privacy_pr/contracts/__init__.py
@@ -0,0 +1,46 @@
+from __future__ import annotations
+
+import json
+from dataclasses import dataclass, asdict
+from typing import Dict, Any
+
+
+@dataclass
+class LocalTrade:
+    trade_id: str
+    product_id: str
+    venue: str
+    price: float
+    size: int
+    side: str
+    timestamp: float
+    signer_id: str
+    signature: str
+
+    def to_json(self) -> str:
+        return json.dumps(asdict(self))
+
+
+@dataclass
+class SharedSignals:
+    signals_version: int
+    aggregated_risk: float
+    margin_impact: float
+    liquidity_metric: float
+
+    def to_json(self) -> str:
+        return json.dumps(asdict(self))
+
+
+@dataclass
+class PlanDelta:
+    delta_version: int
+    timestamp: float
+    allocations: Dict[str, float]
+    cryptographic_tag: str
+
+    def to_json(self) -> str:
+        return json.dumps(asdict(self))
+
+
+__all__ = ["LocalTrade", "SharedSignals", "PlanDelta"]
diff --git a/tradecipher_blockchain_backed_privacy_pr/ledger/__init__.py b/tradecipher_blockchain_backed_privacy_pr/ledger/__init__.py
new file mode 100644
index 0000000..4628b63
--- /dev/null
+++ b/tradecipher_blockchain_backed_privacy_pr/ledger/__init__.py
@@ -0,0 +1,32 @@
+from __future__ import annotations
+
+from dataclasses import dataclass
+from typing import Optional, List
+import json
+
+
+@dataclass
+class Block:
+    index: int
+    payload: str
+
+    def __repr__(self) -> str:
+        return f"Block(index={self.index}, payload={self.payload!r})"
+
+
+class AttestationLedger:
+    def __init__(self) -> None:
+        self._blocks: List[Block] = []
+
+    def append(self, payload: str) -> Block:
+        blk = Block(index=len(self._blocks), payload=payload)
+        self._blocks.append(blk)
+        return blk
+
+    def latest(self) -> Optional[Block]:
+        if not self._blocks:
+            return None
+        return self._blocks[-1]
+
+
+__all__ = ["AttestationLedger", "Block"]