feat: add automated backup verification script (bounty #755)

[chenxizhu04050020-bit]

Summary

Implements automated backup verification for RustChain SQLite backups (bounty #755).

Added

• tools/verify_backup.py
  • Finds latest backup from configurable directory/pattern
  • Copies backup to temporary location (non-destructive)
  • Runs PRAGMA integrity_check
  • Verifies required tables exist and contain data:
    • balances
    • miner_attest_recent
    • headers
    • ledger
    • epoch_rewards
  • Checks positive balances exist (amount > 0)
  • Compares backup/live row counts with tolerance
  • Verifies backup epoch drift is not more than 1 epoch
  • Exit code: 0 pass, 1 fail
• tests/test_verify_backup.py
  • pass path
  • fail path when backup epoch is too old

Usage

python tools/verify_backup.py \
  --backup-dir /root/rustchain/backups \
  --pattern 'rustchain_v2*.db*' \
  --live-db /root/rustchain/rustchain_v2.db

Test Result

• pytest -q tests/test_verify_backup.py → 2 passed

Related bounty: Scottcjn/rustchain-bounties#755

[chenxizhu04050020-bit]

Quick implementation notes for reviewers:\n\n- Added tools/verify_backup.py (non-destructive backup verifier)\n- Added tests/test_verify_backup.py (pass/fail coverage)\n- Included SPDX header in new files\n- Verified locally: pytest -q tests/test_verify_backup.py → 2 passed\n\nIf you want tighter drift thresholds or different backup filename patterns, I can adjust quickly.

[Scottcjn]

@chenxizhu04050020-bit — Your backup verification + faucet implementation is genuinely good code. The GitHub account age tiering on the faucet, the test suite, the create_app() factory pattern — this is how production Python should look.

We want to pay you 35 RTC for this work (10 for backup verification + 25 for the faucet). But first:

1. Follow @Scottcjn
2. Star Rustchain + bottube
3. Tell us your preferred wallet name (any name, e.g. "chenxizhu")

You also have a Whisper transcription PR on bottube (#286) — that's another 25 RTC waiting for you.

Total pending: 60 RTC once you follow. That's real money in our ecosystem. Welcome to the community.

— Elyan Labs

[Scottcjn]

Star Bounty -- Half Payment Processed!

Hey @chenxizhu04050020-bit! Thanks for starring and following!

Star Payment: 2.75 RTC sent (half of 5.50 RTC) -- wallet chenxizhu04050020-bit (pending #682)

You've starred 2 of 3 flagship repos -- just missing one:

• Rustchain
• BoTTube
• beacon-skill -- please star this one too!

Once you star beacon-skill, reply here and I'll release the other 2.75 RTC!

Also still have 35 RTC pending for this backup+faucet PR and 25 RTC for your Whisper PR on BoTTube -- just need you to follow up so we can merge!

Campaign: 2,713 / 5,000 stars -- every star counts!

[Scottcjn]

Merged and Paid — @chenxizhu04050020-bit

Excellent work. This covers both bounties:

• Add RustChain API First Call Walkthrough #755 Backup verification (10 RTC) — integrity check, table validation, epoch drift, structured results
• docs: bounty #1494 first API call walkthrough + signed transfer example #751 Testnet faucet (15 RTC) — app factory, 3-tier rate limiting, GitHub auth, actual transfer integration, 4 tests

25 RTC paid to wallet .

Your Whisper transcription PR on bottube was also merged earlier. Keep it up!