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: 2638
Hash: 41c659a53cb68314786ccfacb2b85bb31ed17f52ec8825608e978c30cf235cf8
Previous block: 4770df06e3010062435a12d2be18a294c9e201fc162777f23cdf18b0f0ac4a3e
Next block: 5358a33ecab748961b267531d8b9b441a147b412b73dc659d91e31c283dbdff7
Weight: 908
Versionhex: 20000000
Version: 536870912
Transactions:
Time: 1743847326
Stripped size: 218
Size: 254
Nonce: 7
Merkle root: 3eb8b01ad7e8db3c2cba65d79b5be21c56a417a3b544799f282b162732f15b91
Median time: 1743847325
Difficulty: 4.656542373906925e-10
Confirmations: 5
Chainwork: 000000000000000000000000000000000000000000000000000000000000149e
Bits: 207fffff