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: 912
Hash: 000bb7c7a4bf3a9e62adb3b4bd002127342827eea2c4823ec62606e51b1744c0
Previous block: 2b147848d78bd3a2ead34690f120e7bd56c465d8ebdf043a286615799d0307fd
Next block: 5a1a9ed97a91b20c3b0a13eeeada58a05ce228d2f13a79e653fc6204f73d0f05
Weight: 908
Versionhex: 20000000
Version: 536870912
Transactions:
Time: 1707857820
Stripped size: 218
Size: 254
Nonce: 2
Merkle root: b3d5197e71d8809316a6b71fc422f8417a1bb01d11d4eb0205a8fc319c020454
Median time: 1707857820
Difficulty: 4.656542373906925e-10
Confirmations: 1332
Chainwork: 0000000000000000000000000000000000000000000000000000000000000722
Bits: 207fffff