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: 1201
Hash: 0bb7380232a2aeb4912e6e9ce2eddbfde94ea9bf5d8feb4be002169620fdfc29
Previous block: 79c99921a7c52c9f4bb43b33ad4e90d1d1347056ff9212c23bc966e670b44c80
Next block: 5b7107c05b488ce8f7567ee1c00b9b519cd4709b9da48b71ae2d64c4b0bdceb9
Weight: 908
Versionhex: 20000000
Version: 536870912
Transactions:
Time: 1707857869
Stripped size: 218
Size: 254
Nonce: 4
Merkle root: d1d6167954588bebcd0b6ad78e3237f2a5ea7849186e0dc4834064df869caff5
Median time: 1707857868
Difficulty: 4.656542373906925e-10
Confirmations: 1043
Chainwork: 0000000000000000000000000000000000000000000000000000000000000964
Bits: 207fffff