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: 645
Hash: 7461b9d540343a555327ea82fa58fbb84e789f00e5f1c5a74b323ad6696ef91d
Previous block: 5cb401b2f2f23135549775a97f83bb211ca0565bdc54b788d12419e0bb49e17a
Next block: 45266965248c0bfcbe988f83b7e32f5da34dd39e4bd17d0c7b5fbd5ca7d19eab
Weight: 908
Versionhex: 20000000
Version: 536870912
Transactions:
Time: 1701864251
Stripped size: 218
Size: 254
Nonce: 1
Merkle root: 4ecf18f2b69b19eea09331306c9b80280528e52cc1c42c6ad77b4345a1668656
Median time: 1701864250
Difficulty: 4.656542373906925e-10
Confirmations: 1599
Chainwork: 000000000000000000000000000000000000000000000000000000000000050c
Bits: 207fffff