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: 765
Hash: 51124327ac5bdc5bfa1627432e4ab37f52892ebf1c28cfc74ce7951064f0aec1
Previous block: 109915c30b52c3c4661d5618f9558c063b35235ad8be89d8d09d6a6926cbc132
Next block: 16b0a6024c8b97f572ccb3cc9088b0d97cdaa19ec1fab42c55e754cddd3fab7e
Weight: 908
Versionhex: 20000000
Version: 536870912
Transactions:
Time: 1701864271
Stripped size: 218
Size: 254
Nonce: 0
Merkle root: e7a63d1ea0304c33db2d44a0e3afd92a9827a230c0600f7a19edde6fc9459b21
Median time: 1701864270
Difficulty: 4.656542373906925e-10
Confirmations: 1479
Chainwork: 00000000000000000000000000000000000000000000000000000000000005fc
Bits: 207fffff