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: 1810
Hash: 552ebd9d4aa5109c8c9df76c14495cfdef140643629580a29d6cf1cd47bc9c9f
Previous block: 68791f3cafa49ee789c2d09bc018148f56f40445689564b992cd84130045bbe2
Next block: 13bd8af515822127360142e5dcbdefb91bb430663e07219e4dadeef2c74e04eb
Weight: 908
Versionhex: 20000000
Version: 536870912
Transactions:
Time: 1719159225
Stripped size: 218
Size: 254
Nonce: 4
Merkle root: 8519bbccc118adcb2dddbd2be0fb10003f1af6d66a9a120ddcac68fb8cd1ccaa
Median time: 1719159224
Difficulty: 4.656542373906925e-10
Confirmations: 434
Chainwork: 0000000000000000000000000000000000000000000000000000000000000e26
Bits: 207fffff