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: 1632
Hash: 4e90825744dd7874bc3c06f970a5cbd1b87dd3ca5e8f3e1681ce9c289fde5c40
Previous block: 7c1df0894d112fa2c5292cba83ff392f9c4162e4ef7499a46aebd6130f02c8f9
Next block: 5a24a578ed7e5320f613127cf4e133936d14dc075eb16509cf7a5919a33cf521
Weight: 908
Versionhex: 20000000
Version: 536870912
Transactions:
Time: 1719159195
Stripped size: 218
Size: 254
Nonce: 4
Merkle root: e10f849bc529e0ac59d208a73c56401ebfc2f4b2e06ea8fa6b12a43d757c7ac3
Median time: 1719159194
Difficulty: 4.656542373906925e-10
Confirmations: 612
Chainwork: 0000000000000000000000000000000000000000000000000000000000000cc2
Bits: 207fffff