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: 273
Hash: 55751aea8b1a86d32f185e548ff5e1856cbebf134d4b83754d8fec286ad58600
Previous block: 7773cc12d979740e4e997c27638f92a075102af27e434ca4a520af3d194aa3f9
Next block: 76387b9afba97370f5fdd10611cdb9fe9e925fff9c3bf7653445cc0507c6eb0c
Weight: 872
Versionhex: 30000003
Version: 805306371
Transactions:
Time: 1701597913
Stripped size: 218
Size: 218
Nonce: 2
Merkle root: 4e797a23e43ef8465ba0677f374d44385300ccb0cf2719dfe4f1fdb1d292c3c3
Median time: 1701597912
Difficulty: 4.656542373906925e-10
Confirmations: 1971
Chainwork: 0000000000000000000000000000000000000000000000000000000000000224
Bits: 207fffff