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: 1628
Hash: 02f51545b238c41d5edd89f31b4774d735ee02e1c65110b4fb01028f00828e9e
Previous block: 59e62387f043c7d8f95fee6c16448348b30e03322fa71b05105d323fb0d2b6a0
Next block: 26c7b7112f10f1c61620297bb24d063fee90e72f9a82071ce8de325ed77bdf13
Weight: 908
Versionhex: 20000000
Version: 536870912
Transactions:
Time: 1719159195
Stripped size: 218
Size: 254
Nonce: 0
Merkle root: 1cf4805c6c152b16b2b63b91d7baefdc1463f84f19161798852275cde7601cfa
Median time: 1719159194
Difficulty: 4.656542373906925e-10
Confirmations: 616
Chainwork: 0000000000000000000000000000000000000000000000000000000000000cba
Bits: 207fffff