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: 1246
Hash: 39db2f615956a661b1e95f5441dc062ba0a8925c5db47014bfdb04bec3a289b3
Previous block: 21ba69beb72cd07e972f153a889e0ca5ce4e65714927dca187b7ee2a3c4138ea
Next block: 464840655b9833297bad8f405748f60176be17cc5623507bb30039728b3c2b5d
Weight: 908
Versionhex: 20000000
Version: 536870912
Transactions:
Time: 1718697615
Stripped size: 218
Size: 254
Nonce: 2
Merkle root: ebc19d23479536252f3336122a60b72a014b84b513db15fa6ebbba39aa6fa344
Median time: 1718697614
Difficulty: 4.656542373906925e-10
Confirmations: 998
Chainwork: 00000000000000000000000000000000000000000000000000000000000009be
Bits: 207fffff