I attempted a Bitcoin transaction on Monday Jan 15 2018. For the first few hours, the transaction was showing on blockexplorer.com and blockchain.info as "unconfirmed."

Then after a few hours,, the transaction is showing as "no such Transaction" or "Transaction doesn't exist" on all of the major block explorer sites.

It does still show up on btc.org. Here: https://btc.com/1ButD31URdVvb9R7oTDy6fXRqMdPWo1MQp

As of just now, the transaction has been "seen by 6 peers." But it still is unconfirmed.

There were adequate transaction fees.

I am worried that I may not have access to my 0.6 coins until this transaction either confirms, or completely deleted. My remaining 0.58 coins are in limbo and unspendable.

So,

What could cause an unconfirmed transaction to be visible on blockchain.info etc. and then disappear within a few hours?

Can I expect tje transaction to eventually complete, or be cancelled and returned to my wallet?

Here are the details. Thanks.

  1caf59701a823996b95a8063ec9ba76959a303bd6a0ea05f78a509c91b02f608: Seen by 6 peers. Pending/unconfirmed.
     in   [3045022100fbbd06ff000ffbee4c7e1afa9b12d433f3954e8875605804c8653e739890ab4502203a5d41db08c11a25c37af54f24ad64fe049264a8498b0ec279c2eb995b132cad01] [034ffe04987ad153aeb9f90dffd26c3b8570429227bc53c4f8bcde05cf9bf4c260]
          outpoint:5c22d883729b316c3fca883a869e86d596df976b4b360b1fbcbbc4aea53a8bdf:0 hash160:cc9f6947c9f3d6e5fa707eeb482e3ca999d9fba6
     out  DUP HASH160 [77b1a23b10216271274c30f250c12015369f024d] EQUALVERIFY CHECKSIG 0.013 BTC
     out  DUP HASH160 [a1b8dbc58116176f5c8235bf3dccd3b8d6387c8a] EQUALVERIFY CHECKSIG 0.5871355 BTC