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: 1677
Hash: 231ae8ce94feef44534c74af2b2ccca25eb2ec73d53696e3e2059f444278427e
Previous block: 51d5bcc65e2073adcb0a6c3a55d502b90790a4b0a42e0d5817aae684101522c2
Next block: 77d5f49b4f4ea5589b4c134a1bceb558741b983eaff147e7cdede83782c728e1
Weight: 908
Versionhex: 20000000
Version: 536870912
Transactions:
Time: 1719159203
Stripped size: 218
Size: 254
Nonce: 2
Merkle root: 6d2e1b84856c520624e8e3a30c9c5b3bddd4cf6af7a2b7fb65c6645f15dc521b
Median time: 1719159202
Difficulty: 4.656542373906925e-10
Confirmations: 567
Chainwork: 0000000000000000000000000000000000000000000000000000000000000d1c
Bits: 207fffff