docs: correct Taproot activation threshold from 90% to 75% in documentation

Update documentation to reflect actual BIP9 deployment parameters:
- Activation threshold: 540/720 blocks (75%) vs incorrectly documented 90%
- Confirmation window: 720 blocks (Palladium custom) vs Bitcoin's 2016
- Add explanatory notes about Palladium's lower threshold for faster coordination

doc/TAPROOT.md

@@ -273,10 +273,12 @@ This implementation is a backport of Taproot functionality from **Bitcoin Core v
 
 Taproot activates via BIP9 signaling:
 1. Miners signal readiness by setting bit 2 in block version
-2. When 1815 of 2016 blocks in a retarget period signal (90% threshold), deployment is LOCKED_IN
+2. When 540 of 720 blocks in a confirmation window signal (75% threshold), deployment is LOCKED_IN
 3. After LOCKED_IN period ends, deployment becomes ACTIVE for all subsequent blocks
 4. Timeout on March 1, 2027 if insufficient signaling
 
+**Note**: Palladium uses a 75% activation threshold (540/720 blocks) compared to Bitcoin's 90% (1815/2016 blocks), with a shorter confirmation window to facilitate faster network coordination while maintaining security.
+
 ### Script Verification Flags
 
 **Standard transaction validation** (mempool/relay):

doc/release-notes/release-notes-2.0.0.md

@@ -83,8 +83,10 @@ Taproot will activate via BIP9 miner signaling:
 - **Mainnet**: BIP9 soft fork activation using bit 2
   - Signaling starts: February 14, 2026 00:00:00 UTC (block time 1771027200)
   - Signaling timeout: March 1, 2027 00:00:00 UTC (block time 1803859200)
-  - Activation threshold: 1815 of 2016 blocks (90%) must signal readiness
+  - Activation threshold: 540 of 720 blocks (75%) must signal readiness
+  - Confirmation window: 720 blocks (vs Bitcoin's 2016)
   - Status: Once locked in, Taproot activates in the next period
+  - Note: Palladium uses a 75% threshold to facilitate faster network coordination
 
 - **Testnet**: Same parameters as mainnet for realistic testing
 

doc/taproot-guide.md

@@ -225,11 +225,11 @@ Taproot uses Schnorr signatures instead of ECDSA:
 
 Taproot activates via miner signaling (BIP9):
 - **Signaling period**: February 14, 2026 - March 1, 2027
-- **Activation threshold**: 90% of blocks in a 2016-block period (1815 blocks)
+- **Activation threshold**: 75% of blocks in a 720-block period (540 blocks)
 - **Activation method**: BIP9 soft fork using bit 2
 
 **What this means**:
-- Once 90% of miners signal readiness, Taproot will "lock in"
+- Once 75% of miners signal readiness, Taproot will "lock in"
 - After lock-in, there's a grace period before activation
 - Once activated, everyone must follow Taproot consensus rules