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: 195
Hash: 7590a94ef0815fd60a9dd825540f553ab92a05c982cca16de9b9bb417578307f
Previous block: 246bce2ad5cd075e473e014e8bf07782c7c526ca07bc2867f911298208d5fc73
Next block: 41b6dec361192a4359f030b938217e3ec70062855f5aa43311a1a79c9330339e
Weight: 872
Versionhex: 30000003
Version: 805306371
Transactions:
Time: 1701597900
Stripped size: 218
Size: 218
Nonce: 1
Merkle root: f880ceea02904f5f57cb62c64c6e7db61826ab6e0f7f3233cc02654601fdea65
Median time: 1701597899
Difficulty: 4.656542373906925e-10
Confirmations: 2049
Chainwork: 0000000000000000000000000000000000000000000000000000000000000188
Bits: 207fffff