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: 1419
Hash: 2f3337d7a73c74c1a9868db613f624f431655c8ea8b2ab93b9333cb7871e3a43
Previous block: 78b6ca759a517e97f673b1e06365c35054e632e40c0893d71548c0af9cef201c
Next block: 50277627e7b3b46e24d5f695d4b5fe4cc0e00cecdc7f548e2edaf728686682e6
Weight: 908
Versionhex: 20000000
Version: 536870912
Transactions:
Time: 1718697644
Stripped size: 218
Size: 254
Nonce: 0
Merkle root: 0b58695d6deca3bcd80f3d3dd38685dce5683d57fe08ac4a0e0cf0e6c62ff2e5
Median time: 1718697643
Difficulty: 4.656542373906925e-10
Confirmations: 825
Chainwork: 0000000000000000000000000000000000000000000000000000000000000b18
Bits: 207fffff