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: 713
Hash: 39322d566045fcdad9f14dbdcde7c0c7dc928a6e343132379669f98957324357
Previous block: 53b003162cfccacf37d9f49b07ff3831c4ecf943bbade3c2a411e5262954ac7e
Next block: 563af5cdf4ab11ecca0f17349769953ff3706ea9fe3443e533462f162bf388b7
Weight: 908
Versionhex: 20000000
Version: 536870912
Transactions:
Time: 1701864262
Stripped size: 218
Size: 254
Nonce: 1
Merkle root: 2b594edaf0bdbeb7e59c2fd5b2b44252744a21030fdb2bf69a79962e30fd8d1b
Median time: 1701864261
Difficulty: 4.656542373906925e-10
Confirmations: 1531
Chainwork: 0000000000000000000000000000000000000000000000000000000000000594
Bits: 207fffff