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: 2571
Hash: 6afcdbca54051d3ffa5fd10d60c6c46f4bfd1cdf163c8bda0b8cf3442c4752bb
Previous block: 11950293dc9a871cb2fa009d66c2568fef7f73382c9ebf3bc9f4f0d0c0e493d9
Next block: 09bd873add37b42e60bd3be0d98b954b3ef99ccbb83bfd0fb9ab5519fc208cc1
Weight: 908
Versionhex: 20000000
Version: 536870912
Transactions:
Time: 1743847315
Stripped size: 218
Size: 254
Nonce: 3
Merkle root: 46f2e7f30fb16621b019375a153475e1fe64012814e7ba3090ed68e4b69a767c
Median time: 1743847314
Difficulty: 4.656542373906925e-10
Confirmations: 72
Chainwork: 0000000000000000000000000000000000000000000000000000000000001418
Bits: 207fffff