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: 264
Hash: 0e255cf0b1f823cace3d2d414f41f71e3c29c38104c9adf3800061a3338e9576
Previous block: 228e8860f8c39c32fdb57e34d4efae855018443f6b8fe315f9c657c193c665f1
Next block: 08253458f56a836d779a2ecc92836d675595dd76cd41e35eeb5b2906dcda0d67
Weight: 872
Versionhex: 30000003
Version: 805306371
Transactions:
Time: 1701597911
Stripped size: 218
Size: 218
Nonce: 3
Merkle root: 9f9cebd7be3e04a541dd07cf9bea63fde4c64573847b6ae6c782cff914bb7a43
Median time: 1701597910
Difficulty: 4.656542373906925e-10
Confirmations: 1980
Chainwork: 0000000000000000000000000000000000000000000000000000000000000212
Bits: 207fffff