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: 1850
Hash: 3670748cb83540a990739ad55f9cf4649880dd9e9b4dedf787c1c4b6ac944d8e
Previous block: 1bdd6f7b9a25a7f53e693a3f5364a00ce09b92996718c29c1f2f377d673bdc53
Next block: 486a3112e6ce7b629b7907a01166cdc25941b972edd21a4c2e4db09b8f8c2ff4
Weight: 908
Versionhex: 20000000
Version: 536870912
Transactions:
Time: 1719159232
Stripped size: 218
Size: 254
Nonce: 2
Merkle root: 1c82e0a37c9fde6177417ac3d2b681fb7ed48d168d3b3359141753adf95cc1da
Median time: 1719159231
Difficulty: 4.656542373906925e-10
Confirmations: 394
Chainwork: 0000000000000000000000000000000000000000000000000000000000000e76
Bits: 207fffff