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.

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Enter a block height, e.g. 123, or the start of a bitcoin address, e.g. mxMfLjAez

Height: 1463
Hash: 4569dcc55248bc21af51b5c48c62674b2f0b45bf6737f8e1e8d77f2356e81cfc
Previous block: 57aad65f6b70f8031d7e38a6678ff6442b740eda2f68a5b1ff2ea15460c0c9fd
Next block: 1323ccd0bf2141124d4fa0c3ae67bc71d958e4623f896cbfa7b265d5fb7a8afc
Weight: 908
Versionhex: 20000000
Version: 536870912
Transactions:
Time: 1718697651
Stripped size: 218
Size: 254
Nonce: 0
Merkle root: 277d0cc57eba0b3d93927d368cd76cf24d1f77bdff1ec699d2ecdce2025d3d1c
Median time: 1718697650
Difficulty: 4.656542373906925e-10
Confirmations: 781
Chainwork: 0000000000000000000000000000000000000000000000000000000000000b70
Bits: 207fffff