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: 1898
Hash: 2adbfc250b0650ffdcec4956453a077605a1a22e7fa71955d9ea8a0e13e31df2
Previous block: 2726f5c2b37b4a284b97dfc5d2da336cd3f2f338f8770091eedcaa8986b1c2b6
Next block: 338fae7cbc8cacebc06d05cb4f1a58d863b4f735c4656cd965039b9948adf6e9
Weight: 908
Versionhex: 20000000
Version: 536870912
Transactions:
Time: 1719159240
Stripped size: 218
Size: 254
Nonce: 0
Merkle root: 5716c353c10ab95435fdc9dc3bd0d4be9ff2e6086bcc8b4a0a2aac53353772a3
Median time: 1719159239
Difficulty: 4.656542373906925e-10
Confirmations: 346
Chainwork: 0000000000000000000000000000000000000000000000000000000000000ed6
Bits: 207fffff