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: 1497
Hash: 365c67f511ae491131d2752f62ac1364e86148776445f62f354cef346ef20761
Previous block: 5223f76de7f9cc368ea4f44457554884dc971cd54e6d99bf397c9e3cf112d2a4
Next block: 0487e8a5b9425a4a28daf0aa381ec89c5558b5057cf6f619c24ed343c62c04ab
Weight: 908
Versionhex: 20000000
Version: 536870912
Transactions:
Time: 1718697657
Stripped size: 218
Size: 254
Nonce: 2
Merkle root: 1c349add0c8743a2e93ac94952a81eb353525775c55dd722b43b4ed4e299c47b
Median time: 1718697656
Difficulty: 4.656542373906925e-10
Confirmations: 747
Chainwork: 0000000000000000000000000000000000000000000000000000000000000bb4
Bits: 207fffff