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: 619
Hash: 3c930c98ea0acf3bc2ddf6b659d24328625e66a1c5e169583fdd84077bfdf0b4
Previous block: 66305e969a9bcd2ff39ed55c0bbac296717a0008847e2f094de5da8e5f8020ca
Next block: 4b31b15d711b69c763cb785721742ad4ac257286eae5284f05503bfa78dc5f95
Weight: 908
Versionhex: 20000000
Version: 536870912
Transactions:
Time: 1701864247
Stripped size: 218
Size: 254
Nonce: 1
Merkle root: 5e5c751b0c8a36274f12ad1915c0eaff3a885f0ea1c88ed9bd82b773b9bb1968
Median time: 1701864246
Difficulty: 4.656542373906925e-10
Confirmations: 1625
Chainwork: 00000000000000000000000000000000000000000000000000000000000004d8
Bits: 207fffff