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: 369
Hash: 1640812190323ad16f42b7bfdd9103ca48af19c4a7039f0704c43119e4b8a369
Previous block: 53f0320ca6b3dcedf450f48d011679a9d6f9d9902fd6959485d3a5a34f654a7c
Next block: 66f95e82fee1e673b4fe9433be0f624fd9d7672f39961853e31b96559e3b8d11
Weight: 872
Versionhex: 30000003
Version: 805306371
Transactions:
Time: 1701597929
Stripped size: 218
Size: 218
Nonce: 5
Merkle root: 71f453f945f709ca95c5e10cfdbce18681aa0edc528b67abdeb803802abb7e31
Median time: 1701597928
Difficulty: 4.656542373906925e-10
Confirmations: 1875
Chainwork: 00000000000000000000000000000000000000000000000000000000000002e4
Bits: 207fffff