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: 631
Hash: 7f6400cf71c3bfe00cc3c13ed90af8daf7130e61685a64a58c90092faf434184
Previous block: 1830e62c7cc3eea5585077bed28d8b7494963df1a36aafd1597bdbf5757a0b1b
Next block: 64b7bad47c93657587950411a33dd3eb06b899498de77679a2c686670a5c9e43
Weight: 908
Versionhex: 20000000
Version: 536870912
Transactions:
Time: 1701864249
Stripped size: 218
Size: 254
Nonce: 1
Merkle root: a1565b28a298ca80db4acdd8de8da8b86a4ba9e10d00b71ce19ab7db457a0613
Median time: 1701864248
Difficulty: 4.656542373906925e-10
Confirmations: 1613
Chainwork: 00000000000000000000000000000000000000000000000000000000000004f0
Bits: 207fffff