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: 636
Hash: 27d8c3a7c13173eebe88da04220c2ed1d3194fc17a48b0eac612cc16a58c834c
Previous block: 68fec1b1d29021a88d4ba825fb71aa7161877fae5b8a40d022bcd7c5f440a26a
Next block: 24771ff43c309c82fda0b97045ed84628d3ad1f5d1e7640d2980df729f2aa6dc
Weight: 908
Versionhex: 20000000
Version: 536870912
Transactions:
Time: 1701864249
Stripped size: 218
Size: 254
Nonce: 4
Merkle root: bd902a35d2e9d77d9d4729a1120e90fd1629a82124fb78b57608ab35914b3117
Median time: 1701864249
Difficulty: 4.656542373906925e-10
Confirmations: 1608
Chainwork: 00000000000000000000000000000000000000000000000000000000000004fa
Bits: 207fffff