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: 1972
Hash: 56449f8a7b49618525773d52f0fa48f87bc3107fbfe37b457a67d76ef5afa172
Previous block: 6768eda8ad69c8b5cf1f3abc7449afab2bdf6f17b840f3e234bdbadbb57d0375
Next block: 6355a36782fe4e1bc78289dd459a90575e75ff2250f930468616ec405e896a20
Weight: 908
Versionhex: 20000000
Version: 536870912
Transactions:
Time: 1719159252
Stripped size: 218
Size: 254
Nonce: 1
Merkle root: daa44bf837f01b9c9c081b3877686f72d0ee085fa6d43ac22d097449cd532d06
Median time: 1719159251
Difficulty: 4.656542373906925e-10
Confirmations: 272
Chainwork: 0000000000000000000000000000000000000000000000000000000000000f6a
Bits: 207fffff