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: 223
Hash: 2d9227bd37db77d74ce303a84be5a5b42fddb9ebb26fbcebe9409b42163974a3
Previous block: 7f08fcaaf76981403625bd87f0d02fe23411e7801413ec210be7b676794a6875
Next block: 61f227ec09fca033eac457a7cfcf5a44785cc6ddc958d5655f4f75814d6a45e2
Weight: 872
Versionhex: 30000003
Version: 805306371
Transactions:
Time: 1701597904
Stripped size: 218
Size: 218
Nonce: 0
Merkle root: 52bb3c35b776895fe91c93d2a2d7993618cb1b70df327d043e1f482f2453eaae
Median time: 1701597904
Difficulty: 4.656542373906925e-10
Confirmations: 2021
Chainwork: 00000000000000000000000000000000000000000000000000000000000001c0
Bits: 207fffff