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: 109
Hash: 0aa4e7465012960aaa5eed03cd60568e1847b9cd3ca930df389b536cc18924ea
Previous block: 735ba0a09bd94df81a12261086827811a9697fc27b40c68539e948506583b5a5
Next block: 54ec41a69b6d13314ab14551b6aa36107e90559eb6cdf50a4fff03ab0c1d2066
Weight: 868
Versionhex: 20000000
Version: 536870912
Transactions:
Time: 1701597885
Stripped size: 217
Size: 217
Nonce: 1
Merkle root: 3ab426f70cfa09e69bcd54619a597bdfa289b5714d50dba1bb91d63c91d31cac
Median time: 1701597885
Difficulty: 4.656542373906925e-10
Confirmations: 2135
Chainwork: 00000000000000000000000000000000000000000000000000000000000000dc
Bits: 207fffff