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: 1936
Hash: 6a154af302d42814c75b8253d1b4112375b9899bf951bfbb842f921728e4acba
Previous block: 18622b5fae640226bafe2f1087a84c92dd082c286d025ebd1cbc3fc912825749
Next block: 35fdcbd94f0a1d0c86407a25bb6a500f2a659120e39919aacb98ae872947d8bb
Weight: 908
Versionhex: 20000000
Version: 536870912
Transactions:
Time: 1719159246
Stripped size: 218
Size: 254
Nonce: 1
Merkle root: 37f92ec4f4ae0b36b9e8e567e5a4161f5873f0d829ca66deccd7743d0b794682
Median time: 1719159245
Difficulty: 4.656542373906925e-10
Confirmations: 308
Chainwork: 0000000000000000000000000000000000000000000000000000000000000f22
Bits: 207fffff