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: 374
Hash: 31d053e94ac8093aa3bb595046783780f2f099b1f20632c4e48e189c09c2af91
Previous block: 20100a53a77941d9a14b2fa5fcb5a8bec3cf095251836cc4d0c546a21667cb46
Next block: 26657e81e8681bc31ce8853a60eec84a3869f0573f2e91d572bd77c3a27ae4aa
Weight: 872
Versionhex: 30000003
Version: 805306371
Transactions:
Time: 1701597930
Stripped size: 218
Size: 218
Nonce: 0
Merkle root: 1d32b398bbb3050212192d7e47a976168a3b22da0f205d52035ba7b05d5900a2
Median time: 1701597929
Difficulty: 4.656542373906925e-10
Confirmations: 1870
Chainwork: 00000000000000000000000000000000000000000000000000000000000002ee
Bits: 207fffff