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[readme] contract starts when first proof is submitted

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Mark Spanbroek 2022-06-13 13:33:18 +02:00 committed by markspanbroek
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@ -36,42 +36,34 @@ When all goes well, the client and host perform the following steps:
| | | |
| --------------- request (1) -------------> | | --------------- request (1) -------------> |
| | | |
| | ---- offer (2) ----> | | ----- data (2) ---> | |
| | | | |
| ------------- select offer (3) ----------> | | --- fulfill (3) ---> |
| |
| ----- data (4) ---> | |
| | | |
| ---- start (5) ----> | | ---- proof (4) ----> |
| | | |
| ---- proof (6) ----> | | ---- proof (4) ----> |
| | | |
| ---- proof (6) ----> | | ---- proof (4) ----> |
| | | |
| ---- proof (6) ----> | | <-- payment (5) ---- |
| |
| <-- payment (7) ---- |
1. Client submits a request for storage, containing the size of the data that 1. Client submits a request for storage, containing the size of the data that
it wants to store and the length of time it wants to store it it wants to store and the length of time it wants to store it
2. Several hosts submit offers containing a price 2. Client makes the data available to hosts
3. The client selects an offer 3. The first host to submit a storage proof can fulfill the request
4. The client sends the data it wants to store to the host 4. While the storage contract is active, the host proves that it is still
5. Once the host has received the data it starts the storage contract
6. While the storage contract is active, the host proves that it is still
storing the data by responding to frequent random challenges storing the data by responding to frequent random challenges
7. At the end of the contract the host is paid 5. At the end of the contract the host is paid
Contracts Contracts
--------- ---------
A storage contract can be negotiated through requests and offers. A request A storage contract can be negotiated through requests. A request contains the
contains the size of the data and the length of time during which it needs to be size of the data and the length of time during which it needs to be stored. It
stored. It also contains a maximum price that a client is willing to pay and also contains a reward that a client is willing to pay and proof requirements
proof requirements such as how often a proof will need to be submitted by the such as how often a proof will need to be submitted by the host. A random nonce
host. A random nonce is included to ensure uniqueness among similar requests. An is included to ensure uniqueness among similar requests.
offer contains a reference to the request it pertains to, a price, and an expiry
time.
When a new storage contract is created the client immediately pays the entire When a new storage contract is created the client immediately pays the entire
price of the contract. The payment is only released to the host upon successful price of the contract. The payment is only released to the host upon successful
@ -120,14 +112,6 @@ To Do
Allow another host to take over a contract when the original host missed too Allow another host to take over a contract when the original host missed too
many proofs. many proofs.
* Start failures
When a contract fails to start it should be aborted after a timeout. A
contract may fail to start because the client failed to send the data, or
because the host failed to start the contract. To discourage this, a small
portion of both the client and host money can be burned if the contract
doesn't start within a certain amount of time.
* Reward validators * Reward validators
A validator that points out missed proofs should be compensated for its A validator that points out missed proofs should be compensated for its