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: 529
Hash: 5a38c8a7d5dd5430a88740d377f49a44f04b2bb2f7a2f2b3c203c04346470c52
Previous block: 2fd2000e01a90f1cd74029f7765d91dc194cf295a423fefc50839ae819a3a876
Next block: 787fe9090daf7bf0a7562e3852ce44a6dbcbe824d0ef20979d17741fc5d8ab2a
Weight: 908
Versionhex: 20000000
Version: 536870912
Transactions:
Time: 1701864232
Stripped size: 218
Size: 254
Nonce: 0
Merkle root: d78cc2c477e16b8407dfd58dc29e7db18b9e165fb970eddbb886a7a8fca484dc
Median time: 1701864231
Difficulty: 4.656542373906925e-10
Confirmations: 1715
Chainwork: 0000000000000000000000000000000000000000000000000000000000000424
Bits: 207fffff