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: 1530
Hash: 315a97222571a42e045d261fb5c2aa3f9b72c6557986018a5435a59da862c161
Previous block: 1b798ef1171f8ee15ebd2071358a4a06279ee19e7180903a33fda53055ebfe0f
Next block: 0d3d520b49907fb96bf08520def7f27f8db78847de662f2af4ace95aee376d76
Weight: 908
Versionhex: 20000000
Version: 536870912
Transactions:
Time: 1718697662
Stripped size: 218
Size: 254
Nonce: 0
Merkle root: e84b3c288ca4d59ea9a5108edbe3eff40e94ae113f938c659b0a169eaae78ca2
Median time: 1718697662
Difficulty: 4.656542373906925e-10
Confirmations: 714
Chainwork: 0000000000000000000000000000000000000000000000000000000000000bf6
Bits: 207fffff