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. mgqFp9Dhy

Height: 2197
Hash: 286eb2eef3bd4445961770b1098aee9b31c0326622174fb368503fac6ca8eccd
Previous block: 3227e1b6aae18e23cfa9c9f2772a0307b61ff68b043654b646f37ce1b3f674fa
Next block: 5aeb7b55a1cb09134db87002181a9b9466b432612f93fffbbcf4bb0e0891e6cb
Weight: 908
Versionhex: 20000000
Version: 536870912
Transactions:
Time: 1728964803
Stripped size: 218
Size: 254
Nonce: 0
Merkle root: 146f8d0e993259250c30a750fcd0d9d087b138e1025b54b147d396dc3c138e86
Median time: 1728964802
Difficulty: 4.656542373906925e-10
Confirmations: 47
Chainwork: 000000000000000000000000000000000000000000000000000000000000112c
Bits: 207fffff