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: 1202
Hash: 5b7107c05b488ce8f7567ee1c00b9b519cd4709b9da48b71ae2d64c4b0bdceb9
Previous block: 0bb7380232a2aeb4912e6e9ce2eddbfde94ea9bf5d8feb4be002169620fdfc29
Next block: 7da5ee6c9d2179cbf30a2004dbcd5a7e6f5310264d9ae2511e302f06250fd604
Weight: 908
Versionhex: 20000000
Version: 536870912
Transactions:
Time: 1707857869
Stripped size: 218
Size: 254
Nonce: 1
Merkle root: 1909ba2140e06e72e8841817e666ca3a9d85036f50fd44aa16243964712cbb1d
Median time: 1707857868
Difficulty: 4.656542373906925e-10
Confirmations: 1042
Chainwork: 0000000000000000000000000000000000000000000000000000000000000966
Bits: 207fffff