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: 2561
Hash: 2aa0f7db77b7c3a0bf16680b830fa0ff083dd0d921f46689793a61a7fc08f5ad
Previous block: 04ece2f3dbc87c9c750196f4e492305b5fedbc6152741d1cc43ed51b258b221d
Next block: 725c278f36f0c97337cdb5cceb71a56ae25b0aa322e8045a63b1af754b411189
Weight: 908
Versionhex: 20000000
Version: 536870912
Transactions:
Time: 1743847313
Stripped size: 218
Size: 254
Nonce: 3
Merkle root: 731bf00d68e1a8c8c5a73c48e1ffa8edb71f806cd81c4535a7f2d9a288039aec
Median time: 1743847313
Difficulty: 4.656542373906925e-10
Confirmations: 82
Chainwork: 0000000000000000000000000000000000000000000000000000000000001404
Bits: 207fffff