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: 622
Hash: 2bdc7c33ffc8f05d4427a09877ac9f650b93ec535a700b99a082869ae2568820
Previous block: 2fd22d45a8add152bab8d82004f5fa59c9c4640b1954f0e0830795a5ba799b90
Next block: 081c84176c513752320a4190ce5ebfcb21a2d7e4603460c1c555d0b26427a8b5
Weight: 908
Versionhex: 20000000
Version: 536870912
Transactions:
Time: 1701864247
Stripped size: 218
Size: 254
Nonce: 5
Merkle root: 7a3a279308b1c8b14172a4996ed5aefac704d8b788f94a8e6d5edb3300993b07
Median time: 1701864246
Difficulty: 4.656542373906925e-10
Confirmations: 1622
Chainwork: 00000000000000000000000000000000000000000000000000000000000004de
Bits: 207fffff