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: 122
Hash: 6c8d8815ef04397b6ac79b72255b58fd65e41765887af3b7674705d86f1ffc73
Previous block: 4478d7222552f1ca0eb8734a80287d0f0164098dacd1d02a9468f2788b133bc7
Next block: 2904fa41623e60de07b87030505f0fe5bd2c9f10df760eaee98ad8bb5d3d389a
Weight: 868
Versionhex: 20000000
Version: 536870912
Transactions:
Time: 1701597888
Stripped size: 217
Size: 217
Nonce: 0
Merkle root: b3493d28feb85021fc106a7ba84a54eb0d90e531fa0ff7a68db5faf9d2b98161
Median time: 1701597887
Difficulty: 4.656542373906925e-10
Confirmations: 2122
Chainwork: 00000000000000000000000000000000000000000000000000000000000000f6
Bits: 207fffff