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: 154
Hash: 00d5c3c67d8036bc3e69d1a18800874a51cb9db8ae9e523e3ad01af6e6d9aa99
Previous block: 2652957dea0f2b05c983c4e75aafbb0a6608d41978c62d4811433659cc6af94c
Next block: 512da69d978a9825f522666297cbfe57fd1d92fd28971d7a38a60bab0667d2d7
Weight: 872
Versionhex: 30000003
Version: 805306371
Transactions:
Time: 1701597893
Stripped size: 218
Size: 218
Nonce: 1
Merkle root: 9616e8fc5753ae48ab6bff8b4645e3d08789c118d360591d7d0097187d05a900
Median time: 1701597892
Difficulty: 4.656542373906925e-10
Confirmations: 2090
Chainwork: 0000000000000000000000000000000000000000000000000000000000000136
Bits: 207fffff