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: 397
Hash: 56231df3c57be9398f583e7453a675058d16982aaba3c92ca78ada6758de6f62
Previous block: 382bf261f1f6096141c0c3a774e0eabe0b9257cee17ecb15e952a62753ce48f7
Next block: 36823c0c5200b9d94499c65525b61abdc7f6b412ed213fee4c5aa5b0a8df1f03
Weight: 872
Versionhex: 30000003
Version: 805306371
Transactions:
Time: 1701597933
Stripped size: 218
Size: 218
Nonce: 0
Merkle root: 4145e52ffb190d31d8b86fec135201310dc1d969adfa8d8e7f15f655496b8211
Median time: 1701597933
Difficulty: 4.656542373906925e-10
Confirmations: 1847
Chainwork: 000000000000000000000000000000000000000000000000000000000000031c
Bits: 207fffff