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: 1809
Hash: 68791f3cafa49ee789c2d09bc018148f56f40445689564b992cd84130045bbe2
Previous block: 46379c613b28adb0c5529d60164cd36c83703ee888bf92c98a1726a5c054abac
Next block: 552ebd9d4aa5109c8c9df76c14495cfdef140643629580a29d6cf1cd47bc9c9f
Weight: 908
Versionhex: 20000000
Version: 536870912
Transactions:
Time: 1719159225
Stripped size: 218
Size: 254
Nonce: 1
Merkle root: cfbb3cc2d9ef750d99c12491b20faaa89044b3c36c83104ff656be4f883360c0
Median time: 1719159224
Difficulty: 4.656542373906925e-10
Confirmations: 435
Chainwork: 0000000000000000000000000000000000000000000000000000000000000e24
Bits: 207fffff