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. mupBAc74k

Height: 2210
Hash: 73762392be2c3b85890a2132d9a633d722884af59e1e71acbb957fafc6faf7f1
Previous block: 64b6a0744a65c597a9d0e4baa492ac8885c2e29a54f7c6609e1583d28fbae07a
Next block: 76e9aea8c1e3cce6cc460b8eace4b1bacf373280bcf316593fc25136d980530e
Weight: 908
Versionhex: 20000000
Version: 536870912
Transactions:
Time: 1719480978
Stripped size: 218
Size: 254
Nonce: 1
Merkle root: 66df99f9b1d02ad65b4f41f8b2b3fb0c9124355fb6e93e64dc370387b940603e
Median time: 1719480977
Difficulty: 4.656542373906925e-10
Confirmations: 82
Chainwork: 0000000000000000000000000000000000000000000000000000000000001146
Bits: 207fffff