DigiByte-Core/digibyte v9.26.0-rc8

DigiByte Core v9.26.0-rc8 DigiDollar - TESTNET ONLY

on GitHub

WARNING: This is a TESTNET-ONLY release. DO NOT use on mainnet.

Development Branch: https://github.com/DigiByte-Core/digibyte/tree/feature/digidollar-v1

Join the Developer Chat: https://app.gitter.im/#/room/#digidollar:gitter.im - Active development discussion happens here!

What's New in RC8

MAST Tree Simplification (Breaking Change)

• Reduced to 2 redemption paths - Normal and ERR paths only
• Removed Partial Redemption - Users must redeem full vault amounts
• Removed Emergency Oracle Override - Simplified security model
• Added CLTV to ERR path - Both paths now require timelock expiry

Critical Bug Fix

• Fixed SignRedemptionTransaction MAST mismatch - The signing code was building a 4-path MAST tree while CreateCollateralP2TR built a 2-path tree. This caused redemption transactions to fail signature verification and never confirm.

Testnet Reset (REQUIRED)

• New testnet10 directory - Fresh blockchain state required
• New P2P port 12032 - Prevents connecting to old testnet9 nodes
• New RPC ports 14026/14125 - Updated for new network

Upgrade Notes

RC8 uses a NEW testnet10 network. You MUST delete old testnet data.

Migration Steps:

1. Close your RC7 wallet
2. Delete old testnet data:
   • Windows: Delete %APPDATA%\DigiByte\testnet9\
   • macOS: Delete ~/Library/Application Support/DigiByte/testnet9/
   • Linux: Delete ~/.digibyte/testnet9/
3. Download and install RC8
4. Launch with -testnet flag

Key Features Since RC1 (Cumulative)

From RC7 - ERR & Oracle Fixes

• Corrected ERR semantics (increases DD burn, not reduces collateral)
• Multi-oracle consensus infrastructure
• Wallet restore fixes for redeemed vaults
• UI improvements for DD address filtering

From RC6 - Network Reset & HD Keys

• Deterministic DigiDollar keys using HD derivation
• Tier derivation fixes for wallet restore
• UI improvements for Receive DD tab

From RC5 - Wallet & Validation Fixes

• Conflicted DD transactions handled properly
• Minimum mint amount rule with activation height
• Historical block validation optimization
• Cross-platform theming fixes

From RC4 - Network Reset & Core Fixes

• Fix Qt freeze from verbose logging
• Fix large DD amounts (8-byte CScriptNum)
• DigiDollarStatsIndex for network metrics
• Exact-amount redemptions

From RC3 - Wallet Safety Fixes

• DGB loss bug fixed with wallet-controlled change addresses
• Non-P2TR outputs allowed for change
• Windows 64-bit integer fixes

From RC2 - Core Transaction Fixes

• DD key persistence across wallet restarts
• Taproot signing fixed for transfers and redemptions
• UTXO scanning fixed for received DD tokens

What is DigiDollar?

DigiDollar is a USD-pegged stablecoin built natively into DigiByte. It uses an over-collateralized model where users lock DGB to mint DUSD at the current oracle price of DGB.

The world's first truly decentralized stablecoin native on a UTXO blockchain, enabling stable value transactions without centralized control.

DGB becomes the strategic reserve asset (21B max, only 2.23 DGB per person on Earth right now). Everything happens inside DigiByte Core wallet. You never give up control of your private keys. No centralized company, fund or pool. Pure decentralization.

Learn more: https://digibyte.io/digidollar

Current Status

• Single Oracle Testing - This beta uses one oracle node for price feeds. Production will use a decentralized oracle network.
• Testnet Only - All DGB and DUSD on testnet have no real value.

Quick Start Guide

Step 1: Download

Download the appropriate file for your platform from the Downloads section below and extract it.

Step 2: Create Config File

Create the config file in your platform's data directory with the following contents:

# DigiByte Configuration
# Global settings (apply to all networks)
testnet=1
server=1
txindex=1

# Testnet-specific settings
[test]
digidollar=1
digidollarstatsindex=1
algo=sha256d
addnode=oracle1.digibyte.io
rpcuser=digibyte
rpcpassword=digibyte123

Windows Setup

Step 1: Download and Install

Download digibyte-9.26.0-rc8-win64-setup.exe and install normally.

Step 2: First Launch (Testnet Mode)

You must launch in testnet mode. Open PowerShell and run:

& "C:\Program Files\DigiByte\digibyte-qt.exe" -testnet

The wallet will start in testnet mode and create the data directory automatically.

Step 3: Create Config File

1. Press Win + R, type %APPDATA%\DigiByte and press Enter
2. Create a new text file named digibyte.conf (remove the .txt extension)
3. Paste the config contents from Step 2 above and save

Step 4: Restart

Close the wallet and launch again from PowerShell:

& "C:\Program Files\DigiByte\digibyte-qt.exe" -testnet

Verify It's Working

• Title bar should say "DigiByte Core - Wallet [testnet10]"
• You should see a DigiDollar tab in the sidebar

Data Directory Reference

• Config: %APPDATA%\DigiByte\digibyte.conf
• Testnet data: %APPDATA%\DigiByte\testnet10\

macOS Setup

Step 1: Download and Extract

Download the .dmg file for your Mac and open it. Drag DigiByte-Qt to your Desktop.

Step 2: First Launch (Testnet Mode)

You must launch in testnet mode. Open Terminal and run:

cd ~/Desktop
./DigiByte-Qt.app/Contents/MacOS/DigiByte-Qt -testnet

If you get a security warning, right-click the app and select "Open", or run:

xattr -cr ~/Desktop/DigiByte-Qt.app

Then try the launch command again.

The wallet will start in testnet mode and create the data directory automatically.

Step 3: Create Config File

In Terminal:

mkdir -p ~/Library/Application\ Support/DigiByte
cat > ~/Library/Application\ Support/DigiByte/digibyte.conf << 'EOF'
# DigiByte Configuration
# Global settings (apply to all networks)
testnet=1
server=1
txindex=1

# Testnet-specific settings
[test]
digidollar=1
digidollarstatsindex=1
algo=sha256d
addnode=oracle1.digibyte.io
rpcuser=digibyte
rpcpassword=digibyte123
EOF

Step 4: Restart

Close the wallet and launch again from Terminal:

cd ~/Desktop
./DigiByte-Qt.app/Contents/MacOS/DigiByte-Qt -testnet

Verify It's Working

• Title bar should say "DigiByte Core - Wallet [testnet10]"
• You should see a DigiDollar tab in the sidebar

Data Directory Reference

• Config: ~/Library/Application Support/DigiByte/digibyte.conf
• Testnet data: ~/Library/Application Support/DigiByte/testnet10/

Ubuntu/Linux Setup

Data Directory

~/.digibyte/

Config file: ~/.digibyte/digibyte.conf

Testnet data stored in: ~/.digibyte/testnet10/

Steps:

1. Open Terminal and create config:

mkdir -p ~/.digibyte
cat > ~/.digibyte/digibyte.conf << 'EOF'
# DigiByte Configuration
# Global settings (apply to all networks)
testnet=1
server=1
txindex=1

# Testnet-specific settings
[test]
digidollar=1
digidollarstatsindex=1
algo=sha256d
addnode=oracle1.digibyte.io
rpcuser=digibyte
rpcpassword=digibyte123
EOF

1. Extract and run:

cd ~/Downloads
tar xzf digibyte-9.26.0-rc8-x86_64-linux-gnu.tar.gz
./digibyte-9.26.0-rc8/bin/digibyte-qt

Verify It's Working

• Title bar should say "DigiByte Core - Wallet [testnet10]"
• You should see a DigiDollar tab in the sidebar

Getting Testnet DGB

Option 1: GUI Console Mining

Mine testnet DGB directly using the GUI console:

1. Go to the Receive tab and create a new address (copy your dgbt1... address)
2. Go to Window > Console
3. Type: generatetoaddress 1 dgbt1qYOURADDRESSHERE
4. Press Enter to mine 1 block
5. Wait for 8 confirmations before spending mined coins (reduced from 100 in testnet10)

Option 2: CPU Miner (Recommended for Continuous Mining)

Use cpuminer to mine testnet DGB in the background. Make sure your wallet is running and synced first.

Download cpuminer: https://github.com/pooler/cpuminer

Build from source or download a release for your platform.

Run cpuminer:

Linux/macOS:

./minerd -a sha256d -o http://127.0.0.1:14026 -O digibyte:digibyte123 -t 4 --coinbase-addr=dgbt1qYOURADDRESSHERE

Windows (PowerShell):

.\minerd.exe -a sha256d -o http://127.0.0.1:14026 -O digibyte:digibyte123 -t 4 --coinbase-addr=dgbt1qYOURADDRESSHERE

Parameters explained:

• -a sha256d - Use SHA256d algorithm (matches algo=sha256d in config)
• -o http://127.0.0.1:14026 - RPC endpoint (testnet RPC port)
• -O digibyte:digibyte123 - RPC credentials from your config (user:password)
• -t 4 - Number of CPU threads to use (adjust based on your CPU)
• --coinbase-addr=dgbt1q... - Your testnet receive address

The miner will continuously mine blocks and send rewards to your address.

Testing DigiDollar Features

Once your wallet is synced and you have testnet DGB:

1. View Network Status - The DigiDollar Overview tab shows oracle price and network collateralization
2. Mint DUSD - Lock DGB as collateral to create DigiDollars
3. Send DUSD - Transfer DigiDollars to other testnet addresses
4. Redeem DUSD - Burn DigiDollars to unlock your DGB collateral (full position only)
5. View History - New DD Transactions tab shows complete transaction history

Network Information

Fork Schedule (Testnet10)

Emission Schedule (Testnet10)

Troubleshooting

"DigiDollar tab not appearing"

• Verify digidollar=1 is under [test] section in config
• Verify testnet=1 is at the top of config (not under any section)
• Restart the wallet after config changes

"Not connecting to network"

• Check your firewall allows port 12032
• Verify addnode=oracle1.digibyte.io is under [test] in config

"Oracle price shows 0 or N/A"

• Wait for sync to complete
• The oracle broadcasts price updates every few minutes
• Check Window > Console: getoracleprice

"Mining not working"

• Ensure algo=sha256d is in your config under [test]
• SHA256d is recommended for fastest CPU mining

"Transaction fee too high"

• DigiDollar transactions require 0.1 DGB minimum fee - this is expected
• This ensures reliable network propagation

"Old testnet9 data causing crashes"

• Delete your testnet9 folder completely (see Upgrade Notes above)
• RC8 requires a fresh testnet10 blockchain

Downloads

Feedback & Community

Please report issues and feedback to help us prepare for mainnet launch.

• Developer Chat (Gitter): https://app.gitter.im/#/room/#digidollar:gitter.im
• GitHub Issues: https://github.com/DigiByte-Core/digibyte/issues