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: 416
Hash: 11eed10e6fca9710fea7146a41b7452362b8142b41d85c1cf15269170c7cac86
Previous block: 1d7e2670f90b1e4fe719ec0bf90e5c085d3738e3359ecf86a605e11b2afa4d1f
Next block: 6f5fa7af5597433f2e5ef4d775092122178f649ba5b7b8e43d225aa4b6b8bf72
Weight: 872
Versionhex: 30000003
Version: 805306371
Transactions:
Time: 1701864213
Stripped size: 218
Size: 218
Nonce: 2
Merkle root: 06be2056af2bb58ef0d8d73d98e65b0b7574f1fa047676cc5d73e40b268e5392
Median time: 1701864212
Difficulty: 4.656542373906925e-10
Confirmations: 1828
Chainwork: 0000000000000000000000000000000000000000000000000000000000000342
Bits: 207fffff