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: 1837
Hash: 42c9b24badbe912ac44cb4df27189f607300e96d573ca55fa00ab144c3d133bd
Previous block: 3806e6f0baa289a22be91b073b8f09dfb9a55b25bb23d5f7302faedb667f9366
Next block: 5f05adb8570ddf75c62ae338d5eb30f4c4e39ee6a3debb6e912019f3a4db9fad
Weight: 908
Versionhex: 20000000
Version: 536870912
Transactions:
Time: 1719159229
Stripped size: 218
Size: 254
Nonce: 1
Merkle root: 77de7062f6a71b6b326d030c0e5a689ed0ec3870db5e48ec4292f60b0fc005fd
Median time: 1719159229
Difficulty: 4.656542373906925e-10
Confirmations: 407
Chainwork: 0000000000000000000000000000000000000000000000000000000000000e5c
Bits: 207fffff