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. mupBAc74k

Height: 2206
Hash: 28f6855f4ef4e386df881e0ac962f2e1ba9384208975b9902d0d01d047a69b41
Previous block: 5ca57b0472f78e19505fd386b8dc2e0ff69f51c55374030c2b1e82e94b19e7e7
Next block: 610c39ebdb2d359beb54173d3a517688cf6b60f6067ae057b691374f21d09ffb
Weight: 908
Versionhex: 20000000
Version: 536870912
Transactions:
Time: 1719480977
Stripped size: 218
Size: 254
Nonce: 2
Merkle root: 38a56f9b1113980b1d3d198b8d90243d55bf4e5ba2a72b83926bd7936bb34b33
Median time: 1719480976
Difficulty: 4.656542373906925e-10
Confirmations: 86
Chainwork: 000000000000000000000000000000000000000000000000000000000000113e
Bits: 207fffff