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: 724
Hash: 1083fa39028d1e30d2fcec592fa8adcadd8d48ea2b39faf6e1fcc7cb56f16a64
Previous block: 7eab633dbddffa92482679ffe0ad2ea2b97dbb19b06ed6cdf0eb85e96e92f1a7
Next block: 7b2be606bd3f95a52903281716aed172816b41d1ec946b29a46764f1f24cb108
Weight: 908
Versionhex: 20000000
Version: 536870912
Transactions:
Time: 1701864264
Stripped size: 218
Size: 254
Nonce: 1
Merkle root: 8fdf05dda1d8465187ff347e3cf684d553fd3c8b07b2f3f8180e1661cc1054ec
Median time: 1701864263
Difficulty: 4.656542373906925e-10
Confirmations: 1520
Chainwork: 00000000000000000000000000000000000000000000000000000000000005aa
Bits: 207fffff