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: 991
Hash: 3608c0a2a89d976744c79431fbe417abf21b2e37fcd266848ad5770628e16b1f
Previous block: 34bba2fa80149ee4d8994341772644d5fc8f9bc1a472b4b68230a92d958a5029
Next block: 4665ad0f70e003760744e5bbe29a7bd711a686076c16ae1a034c8f77a8543203
Weight: 908
Versionhex: 20000000
Version: 536870912
Transactions:
Time: 1707857834
Stripped size: 218
Size: 254
Nonce: 0
Merkle root: 82b4141ad233c1eee2c887a021e76c0d77a95e25e1c759920caa31c1aebeaf24
Median time: 1707857833
Difficulty: 4.656542373906925e-10
Confirmations: 1253
Chainwork: 00000000000000000000000000000000000000000000000000000000000007c0
Bits: 207fffff