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: 2299
Hash: 1c0c26518f2700353b8ae6dd306f285956b64c36e75e186cf949469b1e20f6df
Previous block: 749f6912467d712d7296c5a0fc10141f5dc3dd014355f6239c901616103ed948
Next block: 403a1bf90f198201c4dacb7ab7f0f163d224744e826d4bcf7d1ae279d4f080b6
Weight: 908
Versionhex: 20000000
Version: 536870912
Transactions:
Time: 1743847270
Stripped size: 218
Size: 254
Nonce: 3
Merkle root: 4fd79677f7f625823dd8eaf2f3a10ef8b8bd920174463f3b485e1cd51f7b551b
Median time: 1743847269
Difficulty: 4.656542373906925e-10
Confirmations: 344
Chainwork: 00000000000000000000000000000000000000000000000000000000000011f8
Bits: 207fffff