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: 45
Hash: 715ac2f1404db58c17b38be4429e17ccb6d91b1adbee47f3942aed873b963e22
Previous block: 42bed65fe29198f115ca9b48e0928334781893cbcfc0168851a9bd3836056e7d
Next block: 67201aa38ca927201febaef31c1dbdd0a46ca3496730afdc4f727a40caa659ea
Weight: 868
Versionhex: 20000000
Version: 536870912
Transactions:
Time: 1701597875
Stripped size: 217
Size: 217
Nonce: 0
Merkle root: 22719a0dba01c7c851a5f63ec4667aedc423d0760608e977b67e1e99b75cf5f6
Median time: 1701597874
Difficulty: 4.656542373906925e-10
Confirmations: 2199
Chainwork: 000000000000000000000000000000000000000000000000000000000000005c
Bits: 207fffff