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: 463
Hash: 17e548533a9ce1a60645cdfb1f3c48f4c3e0c80a215dff2826973ad298469efb
Previous block: 3fab5d91254937ac0626d1b6506b086be2c370c404b419dba3d8379d65063a6c
Next block: 039024bef28601600065ee71bdebff3d602904ca5e6419d7739f4622759ca92b
Weight: 908
Versionhex: 20000000
Version: 536870912
Transactions:
Time: 1701864221
Stripped size: 218
Size: 254
Nonce: 1
Merkle root: f9181d049b540beb0bb1b05d135ab9f8241f0e8790d1c32c3a7884b4ca3e1ff6
Median time: 1701864220
Difficulty: 4.656542373906925e-10
Confirmations: 1781
Chainwork: 00000000000000000000000000000000000000000000000000000000000003a0
Bits: 207fffff