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: 725
Hash: 7b2be606bd3f95a52903281716aed172816b41d1ec946b29a46764f1f24cb108
Previous block: 1083fa39028d1e30d2fcec592fa8adcadd8d48ea2b39faf6e1fcc7cb56f16a64
Next block: 6cc4ad790acfc836af4b900f22d56ebef3ff48f5a14c9274caebbd63d6575f8c
Weight: 908
Versionhex: 20000000
Version: 536870912
Transactions:
Time: 1701864264
Stripped size: 218
Size: 254
Nonce: 0
Merkle root: ec27a95da75a78e9c33c3614af60bef3511cd05f072f48e2eb5d4ed1a530ab9b
Median time: 1701864263
Difficulty: 4.656542373906925e-10
Confirmations: 1519
Chainwork: 00000000000000000000000000000000000000000000000000000000000005ac
Bits: 207fffff