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: 55
Hash: 31e2d06463656f72555d58dac48b324ca4c557a00f40035fa131fe770fb1380b
Previous block: 7bc825f93c1d316a7b24cd1b1e10e3965751d78c5e381f25bbee6b9ecb649822
Next block: 55c4054b6253e1a25f21977431067d8151eae79f11fe24e3bf8f7702d2ac0482
Weight: 868
Versionhex: 20000000
Version: 536870912
Transactions:
Time: 1701597876
Stripped size: 217
Size: 217
Nonce: 1
Merkle root: 3a3524761162a8ef08753e158f3bee894437e5153682854744c3b44b7178720d
Median time: 1701597876
Difficulty: 4.656542373906925e-10
Confirmations: 2189
Chainwork: 0000000000000000000000000000000000000000000000000000000000000070
Bits: 207fffff