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: 537
Hash: 0c01f0411dd1f0d7e6c2ec766bf2bf921924ffc9ae2b8b7b53973f3abde85b4b
Previous block: 63f11d175ae45f65ebed6aa5187a54226729b14fbdb8ee70ed342c6b3babc7de
Next block: 3b2797cdb429ba017a58a58360815ad5742b82b90591456aaeec0a3b456c121b
Weight: 908
Versionhex: 20000000
Version: 536870912
Transactions:
Time: 1701864233
Stripped size: 218
Size: 254
Nonce: 3
Merkle root: 2b200d664b3463420f0f6f71a897601974014cf7e926245029146241126cc8c1
Median time: 1701864232
Difficulty: 4.656542373906925e-10
Confirmations: 1707
Chainwork: 0000000000000000000000000000000000000000000000000000000000000434
Bits: 207fffff