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: 121
Hash: 4478d7222552f1ca0eb8734a80287d0f0164098dacd1d02a9468f2788b133bc7
Previous block: 7481ade58ee99b21eb63ddd9b3bbf3b11ec7da87b6c25ad4653aeabb9b0c55f3
Next block: 6c8d8815ef04397b6ac79b72255b58fd65e41765887af3b7674705d86f1ffc73
Weight: 868
Versionhex: 20000000
Version: 536870912
Transactions:
Time: 1701597887
Stripped size: 217
Size: 217
Nonce: 1
Merkle root: 7b7660dd4aead27e9bb1d060a9ad1b7664d497da370375368d0392c3cc6895ac
Median time: 1701597887
Difficulty: 4.656542373906925e-10
Confirmations: 2123
Chainwork: 00000000000000000000000000000000000000000000000000000000000000f4
Bits: 207fffff