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: 1602
Hash: 41abd359f314050a752cb3dbd08b43e2ee6fc03bb264f29dfcd864ce2984998d
Previous block: 3cf8f078cc1fe0c7154260fe891a966dee27857fb9966bf6870078387576c7b7
Next block: 4c9d76e63f7aed1404441fa34b348e42b5cad88f7ad2ee521925876cd96b3688
Weight: 908
Versionhex: 20000000
Version: 536870912
Transactions:
Time: 1718697674
Stripped size: 218
Size: 254
Nonce: 0
Merkle root: 6850ba4864e1929087d35220ecff056f74b19a77b8ff874c1d782c967c1dd588
Median time: 1718697674
Difficulty: 4.656542373906925e-10
Confirmations: 642
Chainwork: 0000000000000000000000000000000000000000000000000000000000000c86
Bits: 207fffff