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: 707
Hash: 1483940cc8a41e2ec3ebd12273fe563aa8a5a08d3a03987430141f686ddb2ddf
Previous block: 03e714949d1c6827114613846dfe645699ca6f892608ee88b43f97d8b15b319a
Next block: 56c9994a7942fd13295afeeefe04b15f13a5f5bae00462899fb80b87220b7e0e
Weight: 908
Versionhex: 20000000
Version: 536870912
Transactions:
Time: 1701864261
Stripped size: 218
Size: 254
Nonce: 2
Merkle root: 1fa423f8f4ed0206e103ec5eb01bbfd0b440f013b17642aa6f73ec621caa6b6f
Median time: 1701864260
Difficulty: 4.656542373906925e-10
Confirmations: 1537
Chainwork: 0000000000000000000000000000000000000000000000000000000000000588
Bits: 207fffff