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: 1444
Hash: 74f21784a31bcdc4761a085b2853191d524699393ed6f62221ce826f37de44a6
Previous block: 17ccb850ccaf7ca4d703c56dac0e5a62eb5f62b0dd1545cad50e78e815ffbbe8
Next block: 6f2a08a6d7724e3c663bb018747add5272e0b49d1ec4512b06446dc8433debfc
Weight: 908
Versionhex: 20000000
Version: 536870912
Transactions:
Time: 1718697648
Stripped size: 218
Size: 254
Nonce: 0
Merkle root: 52d7f2c410e863948e4eccb9e878faf01ea8f62354da9fece992c72b8ab68d32
Median time: 1718697647
Difficulty: 4.656542373906925e-10
Confirmations: 800
Chainwork: 0000000000000000000000000000000000000000000000000000000000000b4a
Bits: 207fffff