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: 1144
Hash: 2886a50f5253c7be01b8046b36b623f0db1d9a23207e9d1033d316ccb714d765
Previous block: 27a06f7048a631dad3fc5571125f3f14af9a65b1d52d5df75049511f822314f0
Next block: 4a955c62ca3f8c065f3b8a99dd5d493fe03186f1635e7b78f046636831fe80dc
Weight: 908
Versionhex: 20000000
Version: 536870912
Transactions:
Time: 1707857859
Stripped size: 218
Size: 254
Nonce: 1
Merkle root: 1b60da5d5593f30302325994119404e3a3838eba3af342ed3063a103a360518d
Median time: 1707857858
Difficulty: 4.656542373906925e-10
Confirmations: 1100
Chainwork: 00000000000000000000000000000000000000000000000000000000000008f2
Bits: 207fffff