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. mkrgsKuFE

Height: 1567
Hash: 6ce2cfac9fe6b61edf557bdd3f420dd2e7794c688636cdb5112a9f57eb94a95c
Previous block: 39833970ea9e9681b039accdc6f87a705f6a44f239ca0b4d8b7570d9a6ddd1b2
Next block: 159a3b7dcf04b2c86a5406957c692bbae91d389d27f04632c95a4b4fbc502037
Weight: 908
Versionhex: 20000000
Version: 536870912
Transactions:
Time: 1708932131
Stripped size: 218
Size: 254
Nonce: 1
Merkle root: 43f11e46568b09062e92de152bc81120e21a2fda45c9c66a6413f3dba9119a94
Median time: 1708932130
Difficulty: 4.656542373906925e-10
Confirmations: 42
Chainwork: 0000000000000000000000000000000000000000000000000000000000000c40
Bits: 207fffff