# Why does the hole purchase have to be funded with BTC

**URL:** <https://bisq.community/t/why-does-the-hole-purchase-have-to-be-funded-with-btc/4512>\
**Category:** Payment methods\
**Created:** [January 18, 2018, 11:07pm UTC](https://bisq.community/t/why-does-the-hole-purchase-have-to-be-funded-with-btc/4512 "2018-01-18T23:07:31Z")\
**Posts on this page:** 2\
**Page:** 1

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**Author:** ![jerryk](https://bisq.community/letter_avatar/jerryk/32/6_22734026db12803ebb3e059622ac3534.png) [@jerryk](https://bisq.community/u/jerryk)\
**Post date:** [January 18, 2018, 11:07pm UTC](https://bisq.community/t/why-does-the-hole-purchase-have-to-be-funded-with-btc/4512/1 "2018-01-18T23:07:32Z")

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Why does the BTC transaction value have to be funded with BTC plus fees, when the transaction is being paid with Zelle? Why won’t the security deposit do.

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**Author:** ![alexej996](https://bisq.community/user_avatar/bisq.community/alexej996/32/491_2.png) [@alexej996](https://bisq.community/u/alexej996)\
**Post date:** [January 19, 2018, 1:42pm UTC](https://bisq.community/t/why-does-the-hole-purchase-have-to-be-funded-with-btc/4512/2 "2018-01-19T13:42:23Z")

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If you are buying BTC with Zelle, you still need to put a security deposit and fees in BTC, because there is no way to lock fiat in a multisig like you can do with bitcoins. Security of Bisq depends on these 2-of-3 multisigs.