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: 1613
Hash: 59adc8826fee88ec6b259ec4d3f4ee1793c7baf41365a0a6819ff79c1b61f9c3
Previous block: 7e7d73ef1fccc1e2233b029fdabb1009a70fcd42cb7e54d955adfd424397e6ea
Next block: 45c00f43ea6f9e9da45ad6b28060714b3cd307f73d10e63175fd651dcc803283
Weight: 908
Versionhex: 20000000
Version: 536870912
Transactions:
Time: 1719159192
Stripped size: 218
Size: 254
Nonce: 1
Merkle root: aeaf608df30edfa1959e51bf61d81914e0d11e406a955c345f7815d8c2046c8f
Median time: 1718697675
Difficulty: 4.656542373906925e-10
Confirmations: 631
Chainwork: 0000000000000000000000000000000000000000000000000000000000000c9c
Bits: 207fffff