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: 331
Hash: 48a5ef667390905227670c714d18de555f6deaa09bd35f64adef2811b1c50109
Previous block: 53203d82e946436c844aea8f05d8e493569c7ff685a4ccc9cbcd7aa706073b46
Next block: 00c2baa208487d4b32e430104120649c7516570b371726c9eabcb896119797ef
Weight: 872
Versionhex: 30000003
Version: 805306371
Transactions:
Time: 1701597922
Stripped size: 218
Size: 218
Nonce: 1
Merkle root: 1af12940815d47b4f7a7731e51dfeead8f7cdd1e086303d828e1f5d53d00c687
Median time: 1701597922
Difficulty: 4.656542373906925e-10
Confirmations: 1913
Chainwork: 0000000000000000000000000000000000000000000000000000000000000298
Bits: 207fffff