What happened:

Secondstrade is accusing all newbie and jr spenders of being double-spenders and using that as an excuse not to payout. Their "Double-spending prevention system" catches any large bet, prior to the post below they were issuing these large payouts manually but now just keep the winnings for themselves!

Quote from: secondstrade.com on February 07, 2017, 01:47:36 AM

hi ? everyone?

After this time, we will refuse payouts or refund requests of all newbie, jr,mebmer, negative trust member.

We have been advertising only on bitcointalk.org for three years.
Therefore, most of our customers on our site are mostly customers who have used bitcointalk.org for a long time.

However, recent transactions that do not automatically pay out are due to our own double-spending prevention system. Most of them are newbie.

We will soon open a service that will completely prevent this double spending.

Until then, every payout or refund requests of all newbie, jr,mebmer, negative trust member will be rejected.

Above newbie,jr,mebmer, negative trust member are defined as one of the member classifications of bitcointalk.org.

thank you.

Replies given to those asking for payouts:

Quote from: secondstrade.com on February 07, 2017, 02:45:54 PM

when you bet, there are many double-spending transaction with big money as below.
and your transaction caught our double-spending defend system.
your must be double-spender.

https://tradeblock.com/bitcoin/tx/5695533838385464867c25dffd3cc8449f7df68aee29228211c341621a4a5907
https://tradeblock.com/bitcoin/tx/abc377b8ec2623ab451bfe6015adb531f5349e09acee14a6e50131b08c1f68b8
https://tradeblock.com/bitcoin/tx/765c20a52eb50b0e8a6d1a83209c44c6ef9f507c3b8ec9fed7e177f67968f80c
https://tradeblock.com/bitcoin/tx/5ec89adaf7d6f8d717390cb48cea854d8d55d98ea6b80d03c7d895d855059db4

Quote from: secondstrade.com on February 07, 2017, 02:58:58 PM

when you bet, there are so many double-spending transaction as below.
all of them was lost game , and never confirmed.
and your transaction was caught by our double-spending system.

https://tradeblock.com/bitcoin/tx/21697e720e564e0a9fdc6c14849b0de78fff7944c21fa861f9d3b0216833408a
https://tradeblock.com/bitcoin/tx/b7cf68b9baeecd5719e1b13ad06e1bc68de996006f5eec3234e1c9e14d354585
https://tradeblock.com/bitcoin/tx/9824ca94b187503beac402f8e6aae9ac394156f606b1b840f10e91b8c4bba6d6
https://tradeblock.com/bitcoin/tx/8c5512c2b1578b0451cc60af9f3a7133c224bac1b636ef7c397a12d33f432e43
https://tradeblock.com/bitcoin/tx/e2d36df4169a5035fa4fdaacfb30406748b5540138e09f6cc677d0122e4ef362
https://tradeblock.com/bitcoin/tx/674d3c6060c4a1907fc101939f02b80011b185f99247e9c853a659d5d6a8c18f

Quote from: secondstrade.com on February 07, 2017, 03:08:33 PM

below all bet has not been confimed. because you sent double spending to our site, you can not receive payout.
https://tradeblock.com/bitcoin/tx/765c20a52eb50b0e8a6d1a83209c44c6ef9f507c3b8ec9fed7e177f67968f80c
https://tradeblock.com/bitcoin/tx/5ec89adaf7d6f8d717390cb48cea854d8d55d98ea6b80d03c7d895d855059db4
https://tradeblock.com/bitcoin/tx/f1c790d1c0826a31fbf85545e9af5fcbc7a9dcf63b924611f14d4fade20447ff
https://tradeblock.com/bitcoin/tx/26c3b8a0e305c126ccc053ee58389a582cd089036a32a7d4c52ad4b862cb5096

Notice he reuses the same transactions more than once.

Scammers Profile Link:

https://bitcointalk.org/index.php?action=profile;u=381676

Reference Link:

https://bitcointalk.org/index.php?topic=813554.3140
http://www.secondstrade.com/tx.jsp?tx=09f0c68ade9a2d89dd0bd7a64d35af99ab0ffaa2a161996088a8f007f16b5bf9 (Just gives an error as payout was blocked)

Amount Scammed:

0.54BTC from myself, >1BTC from everyone combined.

Payment Method:

Bitcoin

Proof of Payment:

https://blockchain.info/tx/09f0c68ade9a2d89dd0bd7a64d35af99ab0ffaa2a161996088a8f007f16b5bf9