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: 512
Hash: 1bebd36c250651bbddcf737cc9ed46c7cdac110af657984ece76dbe78cb2c9a9
Previous block: 0050ed5dde61de12c3a011f1cfb2be700131d1c5db467a0713b090eba282de13
Next block: 7d697c1ac36c5240cff0b665f807e8e99925ba7f275437b94bbe641068959895
Weight: 908
Versionhex: 20000000
Version: 536870912
Transactions:
Time: 1701864229
Stripped size: 218
Size: 254
Nonce: 0
Merkle root: faff181b9a90ff62f9150ab7b95c41d8879606d7e72f8fa803af6afd341420cb
Median time: 1701864228
Difficulty: 4.656542373906925e-10
Confirmations: 1732
Chainwork: 0000000000000000000000000000000000000000000000000000000000000402
Bits: 207fffff