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Anti-fork hardening + checkpoint update (v5.8.6)
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- Add checkpoints through block 2,209,000 to lock canonical chain
- Ban peers on incompatible forks (no common blocks after 3 getblocks)
- Auto-checkpoint: finalize blocks at MAX_REORG_DEPTH to prevent deep reorgs
- Require 10% trust delta for side-chain reorgs (first-seen advantage)
- Add gencheckpoints RPC command for easy future checkpoint generation
- Add wallet onion address to hardcoded seed list

Co-Authored-By: Claude Opus 4.6 <noreply@anthropic.com>
This commit is contained in:
Sami Ahmed
2026-04-22 18:14:58 -07:00
parent 1c068f4782
commit 22e220acaa
11 changed files with 223 additions and 35 deletions
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src/checkpoints.cpp
+8
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@@ -36,6 +36,10 @@ namespace Checkpoints
{2190000, uint256("0x682baf783581468ba18f9967254a7f3944e8b8c4cc7101e7d99b68f4f9dd5271")},
{2200000, uint256("0x0a8d0442f031f1258120f713f34e45f4f9a625fb753558e27b89b32ad5a9a740")},
{2205000, uint256("0xf7aa893ec012181e321783d6a5487addf6997377908faa3e760c9054a4217d29")},
{2206000, uint256("0x780ae878f8b10b6cbd51ceb2c0799c90d3551fa916be62974375071b9e36581c")},
{2207000, uint256("0x8836d67b0f08036c4a7c26ff0a29d4461a52b6d8f552165ad9c1abec2f3cadfd")},
{2208000, uint256("0xe4a19e8a29fa7aae47f7563377af3e896fee18ed069a64e325b8c2c6c820a1be")},
{2209000, uint256("0x04c78a6fc863bed918a9364c58c64489943b2e85d84ddb1ac2fba584f390d5dc")},
};
static MapCheckpoints mapCheckpointsTestnet = {
@@ -55,6 +59,10 @@ namespace Checkpoints
{2190000, uint256("0x682baf783581468ba18f9967254a7f3944e8b8c4cc7101e7d99b68f4f9dd5271")},
{2200000, uint256("0x0a8d0442f031f1258120f713f34e45f4f9a625fb753558e27b89b32ad5a9a740")},
{2205000, uint256("0xf7aa893ec012181e321783d6a5487addf6997377908faa3e760c9054a4217d29")},
{2206000, uint256("0x780ae878f8b10b6cbd51ceb2c0799c90d3551fa916be62974375071b9e36581c")},
{2207000, uint256("0x8836d67b0f08036c4a7c26ff0a29d4461a52b6d8f552165ad9c1abec2f3cadfd")},
{2208000, uint256("0xe4a19e8a29fa7aae47f7563377af3e896fee18ed069a64e325b8c2c6c820a1be")},
{2209000, uint256("0x04c78a6fc863bed918a9364c58c64489943b2e85d84ddb1ac2fba584f390d5dc")},
};
bool CheckHardened(int nHeight, const uint256& hash)