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: 155
Hash: 512da69d978a9825f522666297cbfe57fd1d92fd28971d7a38a60bab0667d2d7
Previous block: 00d5c3c67d8036bc3e69d1a18800874a51cb9db8ae9e523e3ad01af6e6d9aa99
Next block: 64de0832532565470a03801753f73ef84f39751ee9328c53adc9cef228609771
Weight: 872
Versionhex: 30000003
Version: 805306371
Transactions:
Time: 1701597893
Stripped size: 218
Size: 218
Nonce: 3
Merkle root: f746fbcec21988b330949ab89ce13f550de1719132b441d4443bc03fcdc49563
Median time: 1701597892
Difficulty: 4.656542373906925e-10
Confirmations: 2089
Chainwork: 0000000000000000000000000000000000000000000000000000000000000138
Bits: 207fffff