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: 1812
Hash: 7c5a3b3e703de9ef4da233d8e01b5635b1f884ae5c571deecf5903efd7d29165
Previous block: 13bd8af515822127360142e5dcbdefb91bb430663e07219e4dadeef2c74e04eb
Next block: 6d1555bf5f9d2d41c250a3fcf7c8026b88fde007e17184ff4f887a1001aec8f9
Weight: 908
Versionhex: 20000000
Version: 536870912
Transactions:
Time: 1719159225
Stripped size: 218
Size: 254
Nonce: 0
Merkle root: 0d16b8f93d9d7affed0680ee3c1994a64d29bdabd76eafacc582c18805c2edf4
Median time: 1719159224
Difficulty: 4.656542373906925e-10
Confirmations: 432
Chainwork: 0000000000000000000000000000000000000000000000000000000000000e2a
Bits: 207fffff