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: 1670
Hash: 5f337606d9153be5788db65f89695e9304a4c3b53572578db2f38b093dfe3d1f
Previous block: 1f620ffaf9e629e133219813bc6d2d820f178ce5c66410645f5377c3eab3714e
Next block: 48e0c985a4fe819a5f8f9ae0462a984fe0e14b880c6eb5ce63c91a15e695de1c
Weight: 908
Versionhex: 20000000
Version: 536870912
Transactions:
Time: 1719159202
Stripped size: 218
Size: 254
Nonce: 1
Merkle root: ace94f5d9f1a0ecf1f9cd14888dffd7cf9f6f9656c1ecf10eba67802481c46e5
Median time: 1719159201
Difficulty: 4.656542373906925e-10
Confirmations: 574
Chainwork: 0000000000000000000000000000000000000000000000000000000000000d0e
Bits: 207fffff