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.

home    blocks

Enter a block height, e.g. 123, or the start of a bitcoin address, e.g. mxMfLjAez

Height: 626
Hash: 50adefcd858ce58994244210c7da42dcf3a874e467d314903b05c8a6251cd842
Previous block: 6738d6f556eba8d4ff007dd7500664f8185f0b0a77d90099fd1b81c72fe64e44
Next block: 4a4ae61dfb4d36d92ff552a4e17c32a88f2860e6a93e93d292dce7ae29341021
Weight: 908
Versionhex: 20000000
Version: 536870912
Transactions:
Time: 1701864248
Stripped size: 218
Size: 254
Nonce: 0
Merkle root: 4f9772c285b7dc80fddfd6f7363029667b76f6b5a60c4f9bf4ccd9550e468c4c
Median time: 1701864247
Difficulty: 4.656542373906925e-10
Confirmations: 1618
Chainwork: 00000000000000000000000000000000000000000000000000000000000004e6
Bits: 207fffff