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: 1998
Hash: 45f3ac733855db8077d21b1e511c8c210801be613f34d2096549f43bc6f1b1fa
Previous block: 74060852bd37adba5f92ba59835e95bf19c7eb15760e6d76ea96e20117b445e9
Next block: 4a0ad33b312f1d8ec9012f2b68f615c63bb81c62cb9888e91581fd3cdfd413c2
Weight: 908
Versionhex: 20000000
Version: 536870912
Transactions:
Time: 1719159256
Stripped size: 218
Size: 254
Nonce: 1
Merkle root: 3fa6b66247c3bc3c19743189610d5420620df02ba9626302faa19fc0b2ea39a5
Median time: 1719159255
Difficulty: 4.656542373906925e-10
Confirmations: 246
Chainwork: 0000000000000000000000000000000000000000000000000000000000000f9e
Bits: 207fffff