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: 2300
Hash: 403a1bf90f198201c4dacb7ab7f0f163d224744e826d4bcf7d1ae279d4f080b6
Previous block: 1c0c26518f2700353b8ae6dd306f285956b64c36e75e186cf949469b1e20f6df
Next block: 503375f61c5c462364cb6eb017872ca7b8afd591cc155dfabf17117c01f433a0
Weight: 908
Versionhex: 20000000
Version: 536870912
Transactions:
Time: 1743847270
Stripped size: 218
Size: 254
Nonce: 0
Merkle root: 8082cb20db095768b81b20c8fe3019403e61945c1a572e2b9607934560f6405c
Median time: 1743847269
Difficulty: 4.656542373906925e-10
Confirmations: 343
Chainwork: 00000000000000000000000000000000000000000000000000000000000011fa
Bits: 207fffff