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: 1662
Hash: 5f34af82fb8679db99e98cae4473611ccbdbe0da8c7a4ad7fa94b927e1be37f4
Previous block: 70b83d3d791b910ed6e10d2357df4599c1968c5b643d07e37f8afc7f72870be8
Next block: 36b947f0e0fa61f8aeb2e85bb7b577d440b24d90b79134f3a63cb3f976ea0b8c
Weight: 908
Versionhex: 20000000
Version: 536870912
Transactions:
Time: 1719159200
Stripped size: 218
Size: 254
Nonce: 1
Merkle root: 345018fceb1529c28869a0872df0f5d34830c1e204b17d3f60676cfb3dce4378
Median time: 1719159199
Difficulty: 4.656542373906925e-10
Confirmations: 582
Chainwork: 0000000000000000000000000000000000000000000000000000000000000cfe
Bits: 207fffff