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: 1842
Hash: 0bd4fa672ef4ce66928bf2c13eca49bd5f2e753b8def633906b9776dde66fc74
Previous block: 7803efb53d19663b078a8ae1210bc594e5211615d64b8b129e42849bb7ddaf8e
Next block: 30f21167d2ffd86c76c3c51f04ffdfcbc4148c5c583c31b324fda9f341ca8dd2
Weight: 908
Versionhex: 20000000
Version: 536870912
Transactions:
Time: 1719159230
Stripped size: 218
Size: 254
Nonce: 0
Merkle root: d442d9cec0c5710fddd3d1d935811e9ea7cf099a53a0c6ed37ea712bd609e6e0
Median time: 1719159229
Difficulty: 4.656542373906925e-10
Confirmations: 402
Chainwork: 0000000000000000000000000000000000000000000000000000000000000e66
Bits: 207fffff