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: 632
Hash: 64b7bad47c93657587950411a33dd3eb06b899498de77679a2c686670a5c9e43
Previous block: 7f6400cf71c3bfe00cc3c13ed90af8daf7130e61685a64a58c90092faf434184
Next block: 63ed97395d2b5a4922e8763435f4f8b187238f4bb92b8d63e1a36051b4d1c03f
Weight: 908
Versionhex: 20000000
Version: 536870912
Transactions:
Time: 1701864249
Stripped size: 218
Size: 254
Nonce: 2
Merkle root: fc3fad2136570e0dc09e803e719a60fd3ad8aabccd6d4d6f5e731683f0a04b1d
Median time: 1701864248
Difficulty: 4.656542373906925e-10
Confirmations: 1612
Chainwork: 00000000000000000000000000000000000000000000000000000000000004f2
Bits: 207fffff