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: 257
Hash: 43b891101de9b9a4a2f77383026f502390f9eb2cbfbb32b7b2fe0696befb0f58
Previous block: 407be25ba0074dc1de9693b1ee115d635f1fe789dd8bb9417ab89dc0675f108d
Next block: 6a3d2025cd92802f8a01be3b86ad610ec84e3bc086f179569ff4f52d8ffad6f8
Weight: 872
Versionhex: 30000003
Version: 805306371
Transactions:
Time: 1701597910
Stripped size: 218
Size: 218
Nonce: 2
Merkle root: 1da240bcf628d2b3d9b3020853649d368ab743846824eaa61007e96007f4a3b6
Median time: 1701597909
Difficulty: 4.656542373906925e-10
Confirmations: 1987
Chainwork: 0000000000000000000000000000000000000000000000000000000000000204
Bits: 207fffff