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: 1994
Hash: 162fef885cde6a456ca827dac650cfd9cfc285ab1329e7443c7758c8691c8f7f
Previous block: 2a6de308075dcfefb8145f281d3ffccb68062e6ea6f6676dd83e3bed5a000407
Next block: 70e07ccf6b9a2b72a95b6fc00283bdda5e2f53d1de98935d47b1c368bffd8aad
Weight: 908
Versionhex: 20000000
Version: 536870912
Transactions:
Time: 1719159256
Stripped size: 218
Size: 254
Nonce: 0
Merkle root: ebef9fee273f0082b872d175270a31e9f3940b26b7425c39234c4904f7320986
Median time: 1719159255
Difficulty: 4.656542373906925e-10
Confirmations: 250
Chainwork: 0000000000000000000000000000000000000000000000000000000000000f96
Bits: 207fffff