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: 1838
Hash: 5f05adb8570ddf75c62ae338d5eb30f4c4e39ee6a3debb6e912019f3a4db9fad
Previous block: 42c9b24badbe912ac44cb4df27189f607300e96d573ca55fa00ab144c3d133bd
Next block: 3d629535e8fa9d56abf2c77c3a5e5402a292d77b3fbea298e737d3c88d610a54
Weight: 908
Versionhex: 20000000
Version: 536870912
Transactions:
Time: 1719159230
Stripped size: 218
Size: 254
Nonce: 0
Merkle root: 1050c825dc7bf1ef675dc9e79e556cd6a48c3b6d83ab27e7240e83084ee0a39c
Median time: 1719159229
Difficulty: 4.656542373906925e-10
Confirmations: 406
Chainwork: 0000000000000000000000000000000000000000000000000000000000000e5e
Bits: 207fffff