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: 475
Hash: 0dd42c85b0c9c66f39c6df7d200c36de9500daee47289d50d4c182d6109c37cf
Previous block: 2ef52c2e5e70aacd4f81a8c9c58de1d68ab28f29413309ccfcdfbbd5ca68d0e2
Next block: 54df5ce6b6270db3f31ee234991c260c01f64d829d90de53712304a28121229c
Weight: 908
Versionhex: 20000000
Version: 536870912
Transactions:
Time: 1701864223
Stripped size: 218
Size: 254
Nonce: 0
Merkle root: 116db2fdc6b71a7ddaa602d1269a2b1a11488a502607e2473a5e4b6bbe0bc35c
Median time: 1701864222
Difficulty: 4.656542373906925e-10
Confirmations: 1769
Chainwork: 00000000000000000000000000000000000000000000000000000000000003b8
Bits: 207fffff