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: 748
Hash: 095fdc242e94845e9819ce41f73e7cb84ecf1e0816e56ccec1ff2b6d743b899f
Previous block: 3cc8d6ce65f56729a80a8641e998c63c11a46b3ea55885c0627518b36cface4b
Next block: 7944a335f2b1b1fe9501e24a0a459dc2d0573360bbec69b51663bd2c5f2e9844
Weight: 908
Versionhex: 20000000
Version: 536870912
Transactions:
Time: 1701864268
Stripped size: 218
Size: 254
Nonce: 0
Merkle root: fcbb0ac198873434d7808725d7c4fb8453b3e2a1b490dda68213dae58d258ad4
Median time: 1701864267
Difficulty: 4.656542373906925e-10
Confirmations: 1496
Chainwork: 00000000000000000000000000000000000000000000000000000000000005da
Bits: 207fffff