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: 445
Hash: 03480d5d633ff04fac7dca1d86953edb1844ecd6fa44f7a86f076281a966de4c
Previous block: 6160eadfd8ffda431425d6a15ab6439da63ae6e0a12912ab484220660ed93e64
Next block: 6a3b96184329a219981f97139dc26c492c139a237cb87e5c459ce9b946153b7c
Weight: 908
Versionhex: 20000000
Version: 536870912
Transactions:
Time: 1701864218
Stripped size: 218
Size: 254
Nonce: 2
Merkle root: 67e132696f955cd4e7f466d74c37a35d2abbd908c50dfa789d3f1185717a25ec
Median time: 1701864217
Difficulty: 4.656542373906925e-10
Confirmations: 1799
Chainwork: 000000000000000000000000000000000000000000000000000000000000037c
Bits: 207fffff