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: 608
Hash: 4bc83df26a20e1b28c885c7eeae8f0fbcf39c1831a60c7b0677bec9e8ce758af
Previous block: 033db07ab08ec9eb7c78ed7c303d688a0804d34a7a13ba017b62e100d60ad850
Next block: 3e42d792f01b575232fee2a22e775df5c47c3f77106a97b1d2ab05f30469859e
Weight: 908
Versionhex: 20000000
Version: 536870912
Transactions:
Time: 1701864245
Stripped size: 218
Size: 254
Nonce: 6
Merkle root: dd036382de00edc395a51e887bfc94fe15d6fce5f786a90ca7d0b8d8438bef96
Median time: 1701864244
Difficulty: 4.656542373906925e-10
Confirmations: 1636
Chainwork: 00000000000000000000000000000000000000000000000000000000000004c2
Bits: 207fffff