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: 1853
Hash: 4b2da751615ceb00bd6986f98f9069ba28d305a13efae2a15e2797248119e169
Previous block: 7dca50a1c380d5b4eb4b6a051c4c4989229611382b359458174329e731a0f710
Next block: 4ba08dee2e4fe15a4f9b6d244a5e12e33a2484b34b9b306b972dad059d4769ed
Weight: 908
Versionhex: 20000000
Version: 536870912
Transactions:
Time: 1719159232
Stripped size: 218
Size: 254
Nonce: 0
Merkle root: aff140b6f014bb49af19c1545ff9d775434f54a475e4eef40491b310241eb09c
Median time: 1719159231
Difficulty: 4.656542373906925e-10
Confirmations: 391
Chainwork: 0000000000000000000000000000000000000000000000000000000000000e7c
Bits: 207fffff