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Suppose I modify the requirements of the Inheritance Scripting Sample where I need to make sure that the prior BTC is "guaranteed" to be available and not reduced or re-spent prior to either of the preceding events:

  1. The 18th birthday arrives
  2. The oracle verifies that the man is dead

With the additional requirement that the Oracle can't hold the transaction hostage for a ransom (since it would know how much is due to the payee), is there any way to use scripting to cover the condition that the previous funds can't be respent? How can this be done?

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The money can be in an account that only the oracle controls. –  Nick ODell Feb 26 '13 at 16:35
    
@NickODell - Perhaps I should update the question... is there a way that the Oracle could prevent "knowing" the amount of inheritance and holding the transaction hostage for a ransom? –  makerofthings7 Feb 26 '13 at 16:36
    
Let's say the Oracle has a partial key (created with BTCKeySplit) and doesn't know the underlying transaction. If the amount has already been spent then who cares if the Oracle tries to hold the transaction for hostage, it is already spent. –  Stephen Gornick Feb 26 '13 at 22:33
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1 Answer

There's no nLockTime support currently so there's not way to limit the spend prior to the 18th birthday.

But as far as giving the Oracle access to spend the funds without knowing the transaction, that can be done with key splitting.

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Is this the same as MultiSig? M of N?blockchain.info/wallet/escrow ... do all the key holders know the total amount? –  makerofthings7 Feb 27 '13 at 14:36
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