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: 1395
Hash: 2e04f6c3c7f965c9eff4303f926a47ddef4f489c6333005308c0aef8a0eab9b9
Previous block: 2c363d0d42902c80a507342fd388855fc74809f89bb5d947c3d888b6e8f1d7a4
Next block: 764c31664af28ed525f42643211941c7a666e5079b13ed4fc5ef60d1133f88ee
Weight: 908
Versionhex: 20000000
Version: 536870912
Transactions:
Time: 1718697640
Stripped size: 218
Size: 254
Nonce: 2
Merkle root: 52480600e8fbd8ae122983d8f9c8ea3897959965d4b701a7965fffcce7653ab3
Median time: 1718697639
Difficulty: 4.656542373906925e-10
Confirmations: 849
Chainwork: 0000000000000000000000000000000000000000000000000000000000000ae8
Bits: 207fffff