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: 1485
Hash: 49124817a3ee6d1a3762ff4c173d56fd4e6e1d3b16978ce943ab31e138837ee2
Previous block: 0ec7070d405ceabc798e7b806de7410f3e8045fe131478c1355d7206f48ab001
Next block: 284717312385bef75737aca159a19d212fda010a0ec716ec65df6d672e9df227
Weight: 908
Versionhex: 20000000
Version: 536870912
Transactions:
Time: 1718697655
Stripped size: 218
Size: 254
Nonce: 2
Merkle root: e8bf2f9e9207c2b199009b68e211abe93ab28df69ab0995263b55c61621e82b2
Median time: 1718697654
Difficulty: 4.656542373906925e-10
Confirmations: 759
Chainwork: 0000000000000000000000000000000000000000000000000000000000000b9c
Bits: 207fffff