src: update checkpoints to match v0.18.4.6

XMR

Monero Project/Monero

f459bd65 View source ↗

Public commit record

What the developer wrote

Authored by selsta

45/100 · Thin

src: update checkpoints to match v0.18.4.6

✓ Descriptive subject✓ Names a concrete action or component! No meaningful explanatory body

The short version

What changed, and why it matters

This commit is a routine maintenance update that adds a new blockchain checkpoint and updates version references in documentation. Checkpoints are like agreed-upon 'milestones' in the blockchain that help nodes sync faster and resist certain attacks. There is no indication of a security fix or vulnerability in this change.

Recommended action

No security action required. Treat as a normal version/checkpoint synchronization update.

Security signals we found

No strong security signals were identified.

Technical analysis

Evidence from the diff

The commit updates Monero’s hardcoded checkpoints to match release v0.18.4.6. It adds checkpoint 3609000 in checkpoints.cpp, updates the compiled-in block hashes hash in blockchain.cpp, refreshes the binary checkpoints.dat file, and updates the recommended minimum version in README.md from v0.18.4.5 to v0.18.4.6. These are standard operational updates for a blockchain client, not a security patch.

Changed components

src/checkpoints/checkpoints.cppsrc/cryptonote_core/blockchain.cppsrc/blocks/checkpoints.datREADME.md

Inspect captured patch +4 / −3

diff --git a/README.md b/README.md
index db9c3a1..66c0ea2 100644
--- a/README.md
+++ b/README.md
@@ -137,8 +137,8 @@ Dates are provided in the format YYYY-MM-DD. The "Minimum" is the software versi
 | 1978433                        | 2019-11-30 | v12               | v0.15.0.0              | v0.16.0.0                  | New PoW based on RandomX, only allow >= 2 outputs, change to the block median used to calculate penalty, v1 coinbases are forbidden, rct sigs in coinbase forbidden, 10 block lock time for incoming outputs
 | 2210000                        | 2020-10-17 | v13               | v0.17.0.0              | v0.17.3.2                  | New CLSAG transaction format
 | 2210720                        | 2020-10-18 | v14               | v0.17.1.1              | v0.17.3.2                  | forbid old MLSAG transaction format
-| 2688888                        | 2022-08-13 | v15               | v0.18.0.0              | v0.18.4.5                  | ringsize = 16, bulletproofs+, view tags, adjusted dynamic block weight algorithm
-| 2689608                        | 2022-08-14 | v16               | v0.18.0.0              | v0.18.4.5                  | forbid old v14 transaction format
+| 2688888                        | 2022-08-13 | v15               | v0.18.0.0              | v0.18.4.6                  | ringsize = 16, bulletproofs+, view tags, adjusted dynamic block weight algorithm
+| 2689608                        | 2022-08-14 | v16               | v0.18.0.0              | v0.18.4.6                  | forbid old v14 transaction format
 | XXXXXXX                        | XXX-XX-XX | XXX                | vX.XX.X.X              | vX.XX.X.X                  | XXX |
 
 X's indicate that these details have not been determined as of commit date.
diff --git a/src/blocks/checkpoints.dat b/src/blocks/checkpoints.dat
index 35248c2..a5e8ff3 100644
Binary files a/src/blocks/checkpoints.dat and b/src/blocks/checkpoints.dat differ
diff --git a/src/checkpoints/checkpoints.cpp b/src/checkpoints/checkpoints.cpp
index 205d2e8..5240af8 100644
--- a/src/checkpoints/checkpoints.cpp
+++ b/src/checkpoints/checkpoints.cpp
@@ -270,6 +270,7 @@ namespace cryptonote
     ADD_CHECKPOINT2(3516300, "fa08acbcda99fcc3cd94a749364a29fa6de9501a023cb6673d0c68fdf988b7c3", "0x738f0af4d65d459");
     ADD_CHECKPOINT2(3541000, "74c457bed9ceef40f31f43bb8fab804077519d45c910dcad2acf4dd8556195c7", "0x76ff158c682d218");
     ADD_CHECKPOINT2(3576000, "5da4891bfd06be270193bd949f2a623a2b0cb0ebfaad21c70a6cb18e418e5b6a", "0x7cb2e203e867b57");
+    ADD_CHECKPOINT2(3609000, "2c49c7eb40959b4d7a452dcec64e65c59a8b1ebec12ffe0af42bc9468eddae56", "0x823db8bb8f45661");
     return true;
   }
 
diff --git a/src/cryptonote_core/blockchain.cpp b/src/cryptonote_core/blockchain.cpp
index a0ba195..f20a817 100644
--- a/src/cryptonote_core/blockchain.cpp
+++ b/src/cryptonote_core/blockchain.cpp
@@ -5438,7 +5438,7 @@ void Blockchain::cancel()
 }
 
 #if defined(PER_BLOCK_CHECKPOINT)
-static const char expected_block_hashes_hash[] = "06c61040ace2d58086f1f8f0c0a78881a71c88f2814307b19f881ef92680f6e0";
+static const char expected_block_hashes_hash[] = "e60d8cd6d77f55df0874bddc4e0e1c7e387374b95180aa5f172bc83abc7cb799";
 void Blockchain::load_compiled_in_block_hashes(const GetCheckpointsCallback& get_checkpoints)
 {
   if (get_checkpoints == nullptr || !m_fast_sync)

Risk score

Why this scored 15/100

Our methodology →

Potential impact 0/30

Exploitability 0/25

Stealth signal 0/15

Affected reach 0/15

Confidence 10/10

Evidence quality 5/5

Human-validated context

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What the developer wrote

What changed, and why it matters

Security signals we found

Evidence from the diff

Changed components

Why this scored 15/100

Community notes

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