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: 764
Hash: 109915c30b52c3c4661d5618f9558c063b35235ad8be89d8d09d6a6926cbc132
Previous block: 79ad17acb8cab3d5d40278da632edae5c932ded797d47a2ecc36f9e1533add29
Next block: 51124327ac5bdc5bfa1627432e4ab37f52892ebf1c28cfc74ce7951064f0aec1
Weight: 908
Versionhex: 20000000
Version: 536870912
Transactions:
Time: 1701864271
Stripped size: 218
Size: 254
Nonce: 1
Merkle root: ccc12c47d5f49a5300206646ea24a869eeb5f86957c83e9d4f7e8e7baa64b330
Median time: 1701864270
Difficulty: 4.656542373906925e-10
Confirmations: 1480
Chainwork: 00000000000000000000000000000000000000000000000000000000000005fa
Bits: 207fffff