It'll be the xpub that you used... the SegWit wallet and the Legacy wallet generate different xpubs due to using different derivation paths.
For instance... the mnemonic:
next symbol window black lemon regret tower cute puppy hope stage setup chunk plate giggle cat genius volcano congress music connect imitate survey flip
Generates a SegWit "xpub" (should really be a ypub... but anyway) of:
xpub6D9Rcfm3dfwKmfk1yuREv8PZVPMg1aYKMGCASrUk7xTcSnzxd3ZBVm68iaGShFquKBTQbYiSUcEEXFwSHBXKtwof7GUkECJLGPVVYYpFmZL
However, the Legacy "xpub" is:
xpub6BnXYq7HesC2gZveMvnXfnbSLU9RmVFuXrk3MkX4cEQfknNA9Hw4Qi2EsCgeDcXvfQK3XziMENUCweEQCtxVHqvk3F3MeuWRTDcyJ5HDrog
Based on that fact that "Sentinel" is generating "1" addresses instead of "3" addresses... it would appear that instead of importing the "xpub" as a SegWit BIP49 xpub, you've unfortunately imported it as a legacy BIP44 xpub and Sentinel has generated valid, but wrong addresses to what you were wanting.
I have been unable to figure out a way to access these "1" addresses without exposing either the Ledger Seed or the Private Keys. There doesn't appear to be a way to generate the legacy addresses with SegWit Derivation Path
However, I have figured out a way to get Electrum to generate a wallet that will enable you to recover coins from the "1" addresses that Sentinel has generated from your Ledger BIP49 xpub... But it requires that you put your Ledger seed into Ian Coleman's Mnemonic Code Converter (
https://iancoleman.io/bip39/) to get the appropriate "xprv":
1. Paste your seed into the "BIP39 Mnemonic" section at the top...
2. Click "BIP32" tab
3. Set the derivation path to:
m/49'/0'/0'4. Copy the "xprv" from "BIP32 Extended Private Key"
5. Import the "xprv" into Electrum wallet (File -> New\Restore -> Standard -> Use master key)
You should again see your matching "1" addresses AND the wallet will contain the private keys so you can move the coins.
WARNING: If you choose to do this you, you should really consider your ledger seed/private keys to now be compromised as it has been typed into a computer... I would suggest that:
1. You do the above process OFFLINE
2. After you've recovered your BTC... you move ALL your coins (BTC and Alts) from the current Ledger seed to a new Ledger seed. There are a couple of ways to achieve this...
- Move all your coins to other wallets, then reset your Ledger to generate a new seed, then move all the coins back to the Ledger.
- Reset the Ledger, generate a NEW seed, get deposit addresses for coins... reset the ledger, restore OLD seed... send all coins to deposit addresses for NEW seed... reset the ledger, restore NEW seed.