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: 414
Hash: 4a78ec721f0ced272c230ebb708ad99a0f929c35251c125bbf31894d2c9980f4
Previous block: 64fab3e71ef2124d04dfb4798c3ad2edf4945055f37d476f902db281ee447512
Next block: 1d7e2670f90b1e4fe719ec0bf90e5c085d3738e3359ecf86a605e11b2afa4d1f
Weight: 872
Versionhex: 30000003
Version: 805306371
Transactions:
Time: 1701864212
Stripped size: 218
Size: 218
Nonce: 4
Merkle root: a20fc5a44b0019d9ae6c8c692b5ae2f0070511e36cabe68601a3bb4a3ffa3221
Median time: 1701864212
Difficulty: 4.656542373906925e-10
Confirmations: 1830
Chainwork: 000000000000000000000000000000000000000000000000000000000000033e
Bits: 207fffff