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: 611
Hash: 72817f8e8ec5b855a3126c5e98f7ea4180fc2b82f9e416fb6c87a98db0c24daf
Previous block: 495c0846a2f3b6dc17ea67d6b4912342c19cfde121cadbe28aad11b87fce360f
Next block: 4b83b102f99d2f35df73d7d6be802f2ede70da8202b69f3a999f38bbf33ecde7
Weight: 908
Versionhex: 20000000
Version: 536870912
Transactions:
Time: 1701864245
Stripped size: 218
Size: 254
Nonce: 1
Merkle root: 0af2dc69e96d6e40c69d9be1b2806794f381db51af1266bd3230261d50d7ae93
Median time: 1701864244
Difficulty: 4.656542373906925e-10
Confirmations: 1633
Chainwork: 00000000000000000000000000000000000000000000000000000000000004c8
Bits: 207fffff