The explorer is running in 'regtest' mode. This saves disk space, but there is limited data.
The code for this application can be found at github.com/pdxrod/blockchain_explorer.

home    blocks

Enter a block height, e.g. 123, or the start of a bitcoin address, e.g. mxMfLjAez

Height: 1955
Hash: 4275e99b585ffb0a046ecaf73970227e3293f36ad8f31219a3e548fa5ea36547
Previous block: 0e73b0aa4f6a832c0fb1fb8606ee04d162dbcdfebd89c6d6f78f3b038de193f3
Next block: 5256cff631943b71037d9cb6727c5fcc28d0fceeb41e07dc14d6295315f72e33
Weight: 908
Versionhex: 20000000
Version: 536870912
Transactions:
Time: 1719159249
Stripped size: 218
Size: 254
Nonce: 1
Merkle root: 804c13b7cad73a035dfac73e54c67be5aa1bc6a7f745c09da7d9a319f25de5d1
Median time: 1719159248
Difficulty: 4.656542373906925e-10
Confirmations: 289
Chainwork: 0000000000000000000000000000000000000000000000000000000000000f48
Bits: 207fffff