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: 153
Hash: 2652957dea0f2b05c983c4e75aafbb0a6608d41978c62d4811433659cc6af94c
Previous block: 4bc39ecb370d534e5e42cc66728aac9de11076373154e0665631a3631176421d
Next block: 00d5c3c67d8036bc3e69d1a18800874a51cb9db8ae9e523e3ad01af6e6d9aa99
Weight: 872
Versionhex: 30000003
Version: 805306371
Transactions:
Time: 1701597893
Stripped size: 218
Size: 218
Nonce: 0
Merkle root: 335b253e6953e6b838dfba3f33ca31fc03def0f2e7ee7c1f14e9ebbdd8fa9d7e
Median time: 1701597892
Difficulty: 4.656542373906925e-10
Confirmations: 2091
Chainwork: 0000000000000000000000000000000000000000000000000000000000000134
Bits: 207fffff