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: 751
Hash: 7f652f60bdb10b59048e62353edb20865e1f67dc44d235203cc9dc257534d382
Previous block: 4d54d3a33cb1aff4ec099f20567f81f4e69de2d38b9e8dd59967a1fde92699f5
Next block: 72a3c6686a3452c082ad7efc1e09aab14b42920e493f26cf01c94b6f5702a42c
Weight: 908
Versionhex: 20000000
Version: 536870912
Transactions:
Time: 1701864269
Stripped size: 218
Size: 254
Nonce: 2
Merkle root: ebe5860786cfc7659d1e800b3371b9e71c82b25c44b921cd35dd80a03839ec0e
Median time: 1701864268
Difficulty: 4.656542373906925e-10
Confirmations: 1493
Chainwork: 00000000000000000000000000000000000000000000000000000000000005e0
Bits: 207fffff