Stroom: TVL on bitcoin via PoR oracle (getCombinedReserveValue)

[AleksDemian]

NOTE

Please enable "Allow edits by maintainers" while putting up the PR.

---

• If you would like to add a volume/fees/revenue adapter please submit the PR here.
• If you would like to add a liquidations adapter, please refer to this readme document for details.

1. Once your adapter has been merged, it takes time to show on the UI. If more than 24 hours have passed, please let us know in Discord.
2. Sorry, We no longer accept fetch adapter for new projects, we prefer the tvl to computed from blockchain data, if you have trouble with creating a the adapter, please hop onto our discord, we are happy to assist you.
3. Please fill the form below only if the PR is for listing a new protocol else it can be ignored/replaced with reason/details about the PR
4. For updating listing info It is a different repo, you can find your listing in this file: https://github.com/DefiLlama/defillama-server/blob/master/defi/src/protocols/data2.ts, you can edit it there and put up a PR
5. Do not edit/push package-lock.json file as part of your changes, we use lockfileVersion 2, and most use v1 and using that messes up our CI
6. No need to go to our discord and announce that you've created a PR, we monitor all PRs and will review it asap

---

Name (to be shown on DefiLlama):

Stroom

Twitter Link:

https://x.com/StroomNetwork

List of audit links if any:

https://github.com/TheArcadiaGroup/publications/blob/main/audits/stroom-audit-final.pdf

Website Link:

https://stroom.network/

Logo (High resolution, will be shown with rounded borders):

https://drive.google.com/file/d/1rXSDuacFU617c1I8qUcxoDURQ4dhBvuY/view?usp=sharing

Current TVL:

~$30.2M

Treasury Addresses (if the protocol has treasury)

Chain:

Bitcoin, Ethereum

Coingecko ID (so your TVL can appear on Coingecko, leave empty if not listed): (https://api.coingecko.com/api/v3/coins/list)

Coinmarketcap ID (so your TVL can appear on Coinmarketcap, leave empty if not listed): (https://api.coinmarketcap.com/data-api/v3/map/all?listing_status=active,inactive,untracked&start=1&limit=10000)

Short Description (to be shown on DefiLlama):

Stroom is an economically secured yield-bearing BTC protocol, designed to solve two major BTC bridge problems: counterparty risk and opportunity cost. strBTC (Stroom BTC) is a wrapped Bitcoin asset, 1:1 backed by Bitcoin, created by Stroom to provide both native BTC yield generation and economic security.

Token address and ticker if any:

strBTC — 0xb2723d5df98689eca6a4e7321121662ddb9b3017
wstrBTC — 0xa3ca88cfb7bbe9cfbd47df053ffa2130c7e6f770

Category (full list at https://defillama.com/categories) *Please choose only one:

Liquid Staking

Oracle Provider(s): Specify the oracle(s) used (e.g., Chainlink, Band, API3, TWAP, etc.):

we use DIA https://www.diadata.org/

Implementation Details: Briefly describe how the oracle is integrated into your project:

Oracle is querying Lightning Network node that stores BTC, aggregating both on-chain and off-chain balances. In addition to that, portion of collateral is storred on Ethereum chain in a form of WBTC and cbBTC. Those values are extracted from the smart contracts and added to lightning network node balance.

Documentation/Proof: Provide links to documentation or any other resources that verify the oracle's usage:

https://docs.google.com/document/d/1CooM513_nJHTZhDF3NCLXbptlOya0wsY3AMbllJMB5s/edit?tab=t.0#heading=h.e29ryp9qtwct

forkedFrom (Does your project originate from another project):

methodology (what is being counted as tvl, how is tvl being calculated):

TVL equals BTC reserves tracked on Bitcoin. We read the aggregated reserve value from Stroom's on-chain PoR oracle on Ethereum (denominated in satoshis), divide by 1e8 to get BTC, and report it as bitcoin (USD pricing from BTC).

Github org/user (Optional, if your code is open source, we can track activity):

https://github.com/stroomnetwork/stroom-contracts-rebase

[llamabutler]

The adapter at projects/stroom exports TVL:

bitcoin                   30.16 M

total                    30.16 M 

[waynebruce0x]

projects/helper/bitcoin-book/index.js and a list of bitcoin wallets

[szhygulin]

List of Bitcoin wallets is not possible to provide. Our solution is based on Lightning Network, which is off-chain L2. Bitcoins that we have locked in Stroom are storred inside Lightnign payment channels. We can try to provide a list of payment channels with corresponding multisig addresses, but that list will be changing frequently due to normal operations of Lightning Network node, moreover that list will not be representative, since inside the channel the balance distribution is constantly changing.

You can find the info about our Lightning node here: https://amboss.space/node/03fe47fdfea0f25fad0013498e8d6cec348ae3d673841ec25ee94f87c21af16ed8

You also can contact our oracle provider DIA (whitelisted on Defilama) about PoR calculation implementation
details. They have direct read-only access to Lightning Network node with BTC so they can query off-chain and on-chain balance of the node.

[Define101]

@AleksDemian in your UI the available token to convert is WBTC, so things are happening on ETH
We need all the WBTC wallets on the ethereum side

[Define101]

[AleksDemian]

@Define101 We have two converters that will store wBTC and cbBTC:
WBTCConverter - https://etherscan.io/address/0x56192f14c1d84e41db3d5d4c5d407efdb5cb1352
CBBTCConverter - https://etherscan.io/address/0xe7b4c44adb17147ad877eb8607eeb1e95adf2cd0

This is only part of the reserves; most of them are bitcoins stored in the Lightning Network Node.

[AleksDemian]

@Define101 Is it enough for you?
The addresses of the converters are also included in the documentation verifying oracle usage.