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: 2630
Hash: 437c6b7d45cd5f51c75f03337f40d5ee4c9be16a23c7487dad702c462e1ddb4a
Previous block: 4e63f6ee1ceadeb3014e63369fc44a283c121505c8c10cb08c29911bfced8c73
Next block: 37647e46ec31ce24234f223ca9d6cde6761320f123bbcbf9c434182c26a20bc1
Weight: 908
Versionhex: 20000000
Version: 536870912
Transactions:
Time: 1743847325
Stripped size: 218
Size: 254
Nonce: 4
Merkle root: e3435d3f4f6ccb8ef93aa58e8be1ece58c1b38af59a2004cc0ffec8b790357de
Median time: 1743847324
Difficulty: 4.656542373906925e-10
Confirmations: 13
Chainwork: 000000000000000000000000000000000000000000000000000000000000148e
Bits: 207fffff