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: 448
Hash: 65538ff703810c9a4f53899d05a53f8bd7cbcacb5bb6fa93919dd9d3e23ce97c
Previous block: 4a49ac9fb5f0d84e0afb59ec98a6c5172d1ebfbc136929df3e13a34941759a51
Next block: 3be112528a626b7d7832ee7f029d97edd458a170298df3d2ac4e607a0df0034a
Weight: 908
Versionhex: 20000000
Version: 536870912
Transactions:
Time: 1701864218
Stripped size: 218
Size: 254
Nonce: 0
Merkle root: fce62fd54d756656c417b7d6f739439154b1a818f0b99d43e43f7e773e653347
Median time: 1701864217
Difficulty: 4.656542373906925e-10
Confirmations: 1796
Chainwork: 0000000000000000000000000000000000000000000000000000000000000382
Bits: 207fffff