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Hashed Timelock Contract (HTLC) as proposed in lightning.network paper
Raw
Original version
OP_DEPTH 3 OP_EQUAL
OP_IF
OP_HASH160 <hash160(R)> OP_EQUALVERIFY
OP_0 2 <AlicePubkey1> <BobPubkey1> 2 OP_CHECKMULTISIG
OP_ELSE
OP_0 2 <AlicePubkey2> <BobPubkey2> 2 OP_CHECKMULTISIG
OP_END
Raw
Proposed equivalent alternative
OP_IF
OP_HASH160 <hash160(R)> OP_EQUALVERIFY
OP_0 2 <AlicePubkey1> <BobPubkey1>
OP_ELSE
OP_0 2 <AlicePubkey2> <BobPubkey2>
OP_END
2 OP_CHECKMULTISIG
@btcdrak
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btcdrak commented Jul 9, 2015

See http://lists.linuxfoundation.org/pipermail/lightning-dev/2015-July/000021.html

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