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: 735
Hash: 2d9396cc59fc37f2ce0b23a3421db8008c3c6530ae7fa9d54ab2a9460c8cb705
Previous block: 053cc3fe585733d8d655f8a57c55b76bb9dfff4a1122574deb40b15005004076
Next block: 6038da3b437ebc2d85163e0f5e5dbba94f32baa6632770f386521f1a7f602f98
Weight: 908
Versionhex: 20000000
Version: 536870912
Transactions:
Time: 1701864266
Stripped size: 218
Size: 254
Nonce: 0
Merkle root: 2aaff873792851cd743f6a3248f169f191153b1edf0a5b7267cfd79ac48c8dff
Median time: 1701864265
Difficulty: 4.656542373906925e-10
Confirmations: 1509
Chainwork: 00000000000000000000000000000000000000000000000000000000000005c0
Bits: 207fffff