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: 2266
Hash: 7c3924880f4772958273e0897778f37e92c0c96740d8e100c04c5e414c8af34d
Previous block: 3b877669ed0c655e69eef120dbdf8332ad6aa1ea05e4969c79d49fc68949ff61
Next block: 21b034ef49ce8c13f5afc0257e0e6625355a539967a5cd187a30c78b74dfdcbe
Weight: 908
Versionhex: 20000000
Version: 536870912
Transactions:
Time: 1743847264
Stripped size: 218
Size: 254
Nonce: 1
Merkle root: da0133e45b6e55ed1577e0abc5b6b9672f3be630da23c9262fe20b0ad9351156
Median time: 1743847263
Difficulty: 4.656542373906925e-10
Confirmations: 377
Chainwork: 00000000000000000000000000000000000000000000000000000000000011b6
Bits: 207fffff