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: 2508
Hash: 0db5757a35c6d459977a064585d5e6e2de4a014e94632758df529e79037ddfcb
Previous block: 6ee532258329b3053c5f1e7cb70858c0bfa590cdd41e611efadc9844aa4f52ee
Next block: 32925da00a574da472cb9f0ec40e9f3eb1f14f3bb1d40974f7570f09dfd0987e
Weight: 908
Versionhex: 20000000
Version: 536870912
Transactions:
Time: 1743847305
Stripped size: 218
Size: 254
Nonce: 0
Merkle root: 3e006d3650c8d04a20312d6b30d068ad992a6d570c29491bd8e718d1ad526b1b
Median time: 1743847304
Difficulty: 4.656542373906925e-10
Confirmations: 135
Chainwork: 000000000000000000000000000000000000000000000000000000000000139a
Bits: 207fffff