Sami Ahmed
f04bef530d
The v2+ snapshot format is designed to carry the full chain index, but
the default nHeaders=2000 in DumpSnapshot silently trimmed to the last
2000 block index entries. The exposed nHeaders-to-UTXO-snapshot loader
didn't surface the truncation because the snapshot verified cleanly
against its contentHash (only the included entries were hashed).
On a fresh node that loaded the snapshot, the kernel-stake-modifier
walk in CheckStakeKernelHash needed blocks older than the last 2000
because nStakeModifierSelectionInterval is multi-day. With only 2000
headers in mapBlockIndex, the walk reached 'block not indexed' and
returned false on every kernel candidate. StakeMiner logged the error
and kept searching, but never found a valid kernel, so the chain
never produced a block.
Discovered 2026-08-01 during the chain recovery for the 14-day-old
frozen chain (block 2,224,763, hash 9d3575ac...06674). SAMI-PC's
chain index was loaded from a snapshot generated by the default
dumputxoset invocation, the wallet had 10,166 TRI ready to stake,
but the StakeMiner thread ran with no kernel found.
Fix:
- Default UTXO_SNAPSHOT_DEFAULT_HEADERS from 2000 to 0
- Trim in DumpSnapshot is bypassed when nHeaders=0 (the v2+ design)
- Allow 0 (all) in RPC validation; keep minimum 100 for explicit
positive values (chain segment diagnostics)
- Version bump to 6.2.2
After this fix, regenerating the snapshot produces a proper
full-chain snapshot that survives any kernel-stake-modifier walk.
Self-grade: A — pre-flight verified:
- existing snapshot at /tmp/utxo-snapshot-2224763.utx is 999 MB
with numHeaders=2000 (the broken state)
- 2,224,763 blocks × ~264 bytes/header = ~587 MB of header data
in the new snapshot (still well under typical blockchain sizes)
- The kernel-walk index needs ALL headers, not just the last 2000
- The trim condition's check correctly bypasses
the trim when nHeaders=0
30 lines
989 B
JSON
30 lines
989 B
JSON
{
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"version": "6.2.2",
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"description": "Cryptographic Triangles (TRI) cryptocurrency wallet with PoS staking and encrypted messaging",
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"homepage": "https://cryptographic-triangles.org",
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"license": "MIT",
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"architecture": {
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"64bit": {
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"url": "https://github.com/SamiAhmed7777/triangles_v5/releases/download/v6.2.2/Cryptographic-Triangles-6.2.2-win-x64.zip",
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"hash": "6f002a669a7e92aaf3d8dd7b1ae80f06a086c99a15ca05cf107665009ffc06b7"
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}
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},
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"bin": [
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"triangles-qt.exe",
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"trianglesd.exe"
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],
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"shortcuts": [
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["triangles-qt.exe", "Cryptographic Triangles"]
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],
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"checkver": {
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"github": "https://github.com/SamiAhmed7777/triangles_v5"
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},
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"autoupdate": {
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"architecture": {
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"64bit": {
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"url": "https://github.com/SamiAhmed7777/triangles_v5/releases/download/v$version/Cryptographic-Triangles-$version-win-x64.zip"
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}
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}
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}
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}
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