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: 1394
Hash: 2c363d0d42902c80a507342fd388855fc74809f89bb5d947c3d888b6e8f1d7a4
Previous block: 218f912748c538019e5425cd61e772cd10bb1fc786624151b928ed1a23e68a46
Next block: 2e04f6c3c7f965c9eff4303f926a47ddef4f489c6333005308c0aef8a0eab9b9
Weight: 908
Versionhex: 20000000
Version: 536870912
Transactions:
Time: 1718697640
Stripped size: 218
Size: 254
Nonce: 2
Merkle root: ca1a714a0ebd437e588df39cf67c3f2c3798bef4bda3e5e0ec5112f37474a646
Median time: 1718697639
Difficulty: 4.656542373906925e-10
Confirmations: 850
Chainwork: 0000000000000000000000000000000000000000000000000000000000000ae6
Bits: 207fffff