⭐ Merited by NeuroticFish (1)
If we delete the leading 00 we end up with 32 bytes, which looks like a correct size, still Ian Coleman's website doesn't recognize it.
On the other hand BouncyCastle.Crypto.dll 1.8.15362.1 has no problem with it.
That's because Ian Coleman's Bitcoin Key Compression website will only accept hex public keys... private keys have to be WIF or BIP38 On the other hand BouncyCastle.Crypto.dll 1.8.15362.1 has no problem with it.
Quote from: https://iancoleman.io/bitcoin-key-compression/
Input Key
Can be a public key (hex encoded) or a private key (WIF or BIP38 encoded)
Can be a public key (hex encoded) or a private key (WIF or BIP38 encoded)