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: 723
Hash: 7eab633dbddffa92482679ffe0ad2ea2b97dbb19b06ed6cdf0eb85e96e92f1a7
Previous block: 16f52bc49e162536802a74c32ea408a3e921db3692c3c38e5eae987b24fb769a
Next block: 1083fa39028d1e30d2fcec592fa8adcadd8d48ea2b39faf6e1fcc7cb56f16a64
Weight: 908
Versionhex: 20000000
Version: 536870912
Transactions:
Time: 1701864264
Stripped size: 218
Size: 254
Nonce: 2
Merkle root: 57140198e0550e683698e4b687128f304d17313c9f560ee301014a910467016f
Median time: 1701864263
Difficulty: 4.656542373906925e-10
Confirmations: 1521
Chainwork: 00000000000000000000000000000000000000000000000000000000000005a8
Bits: 207fffff