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: 1543
Hash: 3e11371d0c3ba2e0b9103efdce241aaa679021c8992608c9460b87b76ffb3487
Previous block: 3ff504ad1f6df4a47e460f22c20104561b64b046338bf056a22adaa47c7a04ab
Next block: 7d1fe01641c4ef5b6e2cb8f61550167f787b930b81174e564663544b72571203
Weight: 908
Versionhex: 20000000
Version: 536870912
Transactions:
Time: 1718697665
Stripped size: 218
Size: 254
Nonce: 1
Merkle root: c8affa9094e0e8e5773de5d626ed85c94c222ba61bdcf4d164a865e80dddd473
Median time: 1718697664
Difficulty: 4.656542373906925e-10
Confirmations: 701
Chainwork: 0000000000000000000000000000000000000000000000000000000000000c10
Bits: 207fffff