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: 1473
Hash: 7234639d5270374883cbe6bd2bd69643b412e42080880fa5699c8897289078b0
Previous block: 1602ff8efd7d435ec9d3b1b68143e76ec6609cc44dc9a372c8fd0c7322b68375
Next block: 737c9f9b71947ecf9323538322f6776f4cb774c95e36395ef6c13353de561811
Weight: 908
Versionhex: 20000000
Version: 536870912
Transactions:
Time: 1718697653
Stripped size: 218
Size: 254
Nonce: 0
Merkle root: f61fc7a43633a30f2fb9a65548ff182baefbc5705892aee9be33747463390d55
Median time: 1718697652
Difficulty: 4.656542373906925e-10
Confirmations: 771
Chainwork: 0000000000000000000000000000000000000000000000000000000000000b84
Bits: 207fffff