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: 430
Hash: 366533078f849bbc56d7efe71b21c9dedc32c940ec870f7dd3bd89cfe86e81b2
Previous block: 0025988ab2271250ec16eac814d0148965a78cfabd3160632c8c215c4bff6ee5
Next block: 6b3db51574dd509c18ac5df5f7e160b9c2f747c68a773fe2be4e50287968f19d
Weight: 872
Versionhex: 30000003
Version: 805306371
Transactions:
Time: 1701864215
Stripped size: 218
Size: 218
Nonce: 2
Merkle root: 202ece7bc849f828e9c8ee728d94528626f32e3c9991c6b97070d3c130e7f5ab
Median time: 1701864214
Difficulty: 4.656542373906925e-10
Confirmations: 1814
Chainwork: 000000000000000000000000000000000000000000000000000000000000035e
Bits: 207fffff