Version compatibility & upgrades (v3 → v4)

ReddCoin Core has had multiple major wallet lines in the wild:

• v3.x (legacy line)
• v4.22.x (current desktop wallet line)

Current status snapshot (Last reviewed: 2026-02-13)

• Latest published v4 desktop build folder in the official download index: 4.22.9
• https://download.reddcoin.com/bin/
• Project updates describe work toward 4.22.10 with staged protocol activations (CSV, SegWit, and potentially Taproot). See:
• https://wordpress.reddcoin.com/index.php/2025/10/01/project-update-october-2025/
• https://wordpress.reddcoin.com/index.php/2025/11/17/project-update-november-2025/

Why upgrades feel “bigger” than expected

v4 introduces newer wallet capabilities (including multi-wallet tooling; and, depending on wallet creation flow, seed-phrase style recovery) and also changes what’s safe to reuse from an old install. Plan on a clean resync when moving from v3 → v4.

---

The critical rule: do not reuse v3 chainstate in v4

Community support repeatedly observed that running v4 over a v3 data directory can cause peer-mixing (v3 peers cached in peers.dat) and/or chain mismatch.

Safe default: treat v3 → v4 as a clean install for blockchain data.

---

Quick upgrade checklist (safe-default)

1. Backup:
2. wallet.dat (and/or the wallets/ directory if present)
3. Install the current v4 wallet from official downloads.
4. Clean resync (recommended):
5. Close Core.
6. Delete (or move aside) blocks/, chainstate/, indexes/ (if present), and peers.dat in the data directory.
7. Start Core and let it fully sync.
8. Optional: use the official v4 bootstrap to speed up sync.

---

Two field-tested migration methods (v3 funds → v4 wallet)

obito summarized two practical patterns used by community members.¹

Method 1: “New v4 address” (recommended if you want the v4 seed phrase workflow)

1. Open Reddcoin Core v4 and generate a receiving address.
2. Close v4.
3. Open v3 and send your coins to the v4 address you generated.
4. Now your funds live in a v4 wallet that can be backed up via:
5. v4 recovery seed phrase (HD wallet),
6. wallet.dat,
7. and private keys (as applicable).¹

Method 2: “Move wallet.dat” (works, but seed phrase may not be usable as a backup)

If you restore a v4 balance by copying wallet.dat across versions, users noted that the v4 recovery seed phrase may not function as a backup for that restored wallet state. In this case you should rely on:

• wallet.dat backups
• exported private keys (where appropriate)¹

---

If you think you’re on the wrong chain

If deposits/withdrawals don’t arrive, or your “synced” wallet doesn’t match explorers, read:

• Wrong fork / wrong chain recovery

---

Footnotes

---

1. Telegram export (ReddCoinOfficial), 2024-03-23, obito, message1988156. Note: Method 1 - method where you take advantage of the recovery seed phrase v4 HD wallet Open ReddCoin Core Wallet 4.22.8. Generate a receiving address. Close the wallet. Ope… Permalink: https://t.me/ReddcoinOfficial/1988156. ↩↩↩