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: 1916
Hash: 5707f73424d96d33307ade8843ab7ed1d9678647afad0c4c9b0ffab6b0b05006
Previous block: 669a8474499be1f9b84301a0f29f1bddaac39a5b2226eacd62d88d4674ff51b5
Next block: 067661ce0d55a60325a15c9403f4d5fc4d2bfdcff8860346a89a61872bc8bc5d
Weight: 908
Versionhex: 20000000
Version: 536870912
Transactions:
Time: 1719159243
Stripped size: 218
Size: 254
Nonce: 1
Merkle root: a3629458476f426e2bd5613a570abdeba1e04659ebcf1fee8e6784b10a44c1f1
Median time: 1719159242
Difficulty: 4.656542373906925e-10
Confirmations: 328
Chainwork: 0000000000000000000000000000000000000000000000000000000000000efa
Bits: 207fffff