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: 317
Hash: 38d7ff40b1b94aa60c0311e19b76d1331ba93b69c966803ae3b8346ed8cb975b
Previous block: 0e810852399c7c517bc4ac90c610ecc6d977c1b82ffb5b51e47640eeca9770ae
Next block: 11afa212ef4fe1f6a1bfca3f51ea05984f453a56b0eb07df5d0ccb346d6405b2
Weight: 872
Versionhex: 30000003
Version: 805306371
Transactions:
Time: 1701597920
Stripped size: 218
Size: 218
Nonce: 0
Merkle root: d7f20d61e20c6b6d75c451b16e402952325683864864858dd87b938d029f5e39
Median time: 1701597919
Difficulty: 4.656542373906925e-10
Confirmations: 1927
Chainwork: 000000000000000000000000000000000000000000000000000000000000027c
Bits: 207fffff