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: 749
Hash: 7944a335f2b1b1fe9501e24a0a459dc2d0573360bbec69b51663bd2c5f2e9844
Previous block: 095fdc242e94845e9819ce41f73e7cb84ecf1e0816e56ccec1ff2b6d743b899f
Next block: 4d54d3a33cb1aff4ec099f20567f81f4e69de2d38b9e8dd59967a1fde92699f5
Weight: 908
Versionhex: 20000000
Version: 536870912
Transactions:
Time: 1701864268
Stripped size: 218
Size: 254
Nonce: 2
Merkle root: 4dd70fc1b8e19eb504bb79e6519d8de80e76c7f67f25f62fff55d853f2bbca7a
Median time: 1701864267
Difficulty: 4.656542373906925e-10
Confirmations: 1495
Chainwork: 00000000000000000000000000000000000000000000000000000000000005dc
Bits: 207fffff