afaik bitcoin hasnt' been broken yet.  However, coin exchange is another story.

First real estate transaction in Blockchain.

https://cointelegraph.com/news/vermonts-pilot-program-completes-first-us-all-blockchain-real-estate-transaction

Now this is another potential place for delegation platform

There are a lot more ways we are using blockchain technologies to make the payment more secure and convenient.  Checkout our Website or telegram for more discussions. 

Blockchain is used to keep record between transactions.   In the case of payment approval chain, smart contracts are created between each level.  Once all the necessary parties approved the transaction, the contract is executed, and the transaction is completed.   Payment sharing is another example of where blockchain and smart contract are used.  All of the user's previous transactions are recorded in the blockchain network, which can be used to determine is the user is trustworthy to share a payment with.

What is PaymentBox
PaymentBox is a decentralized blockchain-backed Secure Payments Platform that provides a simple way for online purchases. No more entering a credit or a debit card during checkout. The purchase is validated on the corresponding mobile app: either on your own mobile device or delegate the payment request to someone else's. All transactions are verified to ensure security, accountability and convenience.

Problem

• It’s difficult to make an online purchase without a credit card, a debit card, or without access to your bank account.
• It’s difficult to pay for another individual’s purchases without giving up your own financial information, or having to be physically present complete the transaction.
• It’s not easy to delegate payments to a friend or groups of friends, and be able to give them extra “interest”in return.
• There is a need for a decentralized system of records that shows proof and transfer of ownership to protect all parties in an ecommerce transaction.
  

Solution
Payment Delegation
Consumers have the option to delegate the payment request to another person (e.g. think teenagers/college students shopping and need parental approval), which traditionally has been a pain point involving sharing sensitive information or needing to be physically present. PaymentBox provides a secure and convenient option where you can select an in network trusted friend or phone number to delegate payments to. Once selected, PaymentBox sends the transaction request to the selected person for payment. A smart contract is created and the transaction recorded in the ledger.

Payment Approval Chain
Additionally, PaymentBox’s delegation model enables proof of ownership and the transfer of ownership from one entity to another in a chain without the need of third-party intermediaries.

Payment Sharing
Sometimes we need help when purchasing a big ticket item. PaymentBox makes it easy to ask for friends to help in time of need. Users can choose to assign a request for payment to a group of friends in their PaymentBox network or social network (Facebook, Instagram, etc). As an incentive, PaymentBox includes a reward platform whereby the borrower can specify a reward for someone who helped make a payment. It is also possible to specify a reward one is willing to give for help making a payment. Multiple friends can bid and the highest bid wins the contract.
Anyone on the platform can provide rewards in a form of PaymentBox token.

Ecosystem Incentives
Customers
We are offering PaymentBox tokens (PAYT) to incentivize bootstrapping of promote strong user participation. PaymentBox tokens can be obtained from the public exchange, and PaymentBox/merchant promotions and incentives. Each time a user completes a transaction with PaymentBox, a percentage of the transaction will be rewarded back to the user as PaymentBox tokens.

Merchants
In addition to user incentives, merchants also receive tokens to participate in the PaymentBox ecosystem.Merchants receiving PAYT-based transactions will not pay transaction fees. In addition, even when a merchant receives a credit card transaction, a portion of the transaction fee is given in tokens back to merchant as an incentive. Merchants have the option to incentivise their customers through PaymentBox promotions and discounts.

Example Use Cases
Business Procurement
You want to purchase a toner for your office printer.  Instead of going through a cumbersome expense report process, use PaymentBox.   PaymentBox sends the payment request through the approval chain.  Once the payment request has gone through the approval chain, the PO is approved, and the order can be made.  No third party intermediary is needed and all transactions are recorded and can be audited later.

Parental-Approved Payment
Want to pay for your children’s purchase without giving them your credit card? With PaymentBox, a child can shop online and initiate the payment process with their parents’ phone number.  Parents can then review the shopping cart and approve the transaction. No need to give a credit card number to anyone.

Whitepaper
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Blockchain technology can potentially be apply to different part of bank operation.  Perhaps a non-traditional, non-centralized bank will become popular in the future.

Just my 2 cent: I would recommend scaling in vs. going all in at once due to volatility.

It all comes down to supply and demand. If demand surpasses supply, it will drive prices up. and vice versa.