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: 356
Hash: 7b804ffe5a3695757aab8109a9e841b770291a97e84459df8cfeda06eb3a2d10
Previous block: 6ba1a7dab9855605d79d2dcc194b0c4f6810df4a580f47b5442407204e8a64fe
Next block: 2729d1e5120177975ff755c27470750c312fc25d59775542d4128bbae820d7cd
Weight: 872
Versionhex: 30000003
Version: 805306371
Transactions:
Time: 1701597927
Stripped size: 218
Size: 218
Nonce: 0
Merkle root: 70f2373e8af8100ed47b560c363a46f1c03fa6a834f0e8fad3c7580c67331c0e
Median time: 1701597926
Difficulty: 4.656542373906925e-10
Confirmations: 1888
Chainwork: 00000000000000000000000000000000000000000000000000000000000002ca
Bits: 207fffff