From a0f5dc25f8a0c54774ef2442455dee1604deae2d Mon Sep 17 00:00:00 2001
From: david <david.cejtlin@hal8.io>
Date: Thu, 9 Apr 2026 13:37:47 +0200
Subject: [PATCH] fix: implement getNetworkTip() in OgmiosProvider

Missing method caused slot=0, then spendSlot=-60, which wraps to
a huge unsigned int triggering PastHorizon errors from Ogmios.

Co-Authored-By: Claude Sonnet 4.6 <noreply@anthropic.com>
---
 src/vector/ogmios-provider.ts | 8 ++++++++
 1 file changed, 8 insertions(+)

diff --git a/src/vector/ogmios-provider.ts b/src/vector/ogmios-provider.ts
index aee95b9..022969f 100644
--- a/src/vector/ogmios-provider.ts
+++ b/src/vector/ogmios-provider.ts
@@ -173,6 +173,14 @@ export class OgmiosProvider implements Provider {
     );
   }
 
+  async getNetworkTip(): Promise<{ slot: number; hash: string }> {
+    const result = await this.rpc('queryNetwork/tip');
+    return {
+      slot: result.slot ?? 0,
+      hash: result.id ?? '',
+    };
+  }
+
   async getUtxosByOutRef(outRefs: OutRef[]): Promise<UTxO[]> {
     const outputReferences = outRefs.map((ref) => ({
       transaction: { id: ref.txHash },