Stacks DeFi contract scout: 10 verified Hiro source URLs

stacks-defi-contract-scout.md

Stacks DeFi Contract Scout

Generated: 2026-06-15T11:55:00Z

This scout skips the five contracts named in the bounty as already audited:

• Granite Finance: SP1A27KFY4XERQCCRCARCYD1CC5N7M6688BSYADJ7.v0-4-market
• ALEX AMM: SP102V8P0F7JX67ARQ77WEA3D3CFB5XW39REDT0AM.amm-pool-v2-01
• Zest pool-borrow: SP2VCQJGH7PHP2DJK7Z0V48AGBHQAW3R3ZW1QF4N.pool-borrow-v2-3
• Bitflow CLMM router: SM1FKXGNZJWSTWDWXQZJNF7B5TV5ZB235JTCXYXKD.dlmm-swap-router-v-1-1
• StackingDAO stableswap: SPQC38PW542EQJ5M11CR25P7BS1CA6QT4TBXGB3M.stableswap-stx-ststx-v-1-2

Verification method:

• Hiro source URLs were checked with the Hiro source endpoint, using one concrete URL per table row, and returned HTTP 200.
• Call-volume evidence uses GET https://api.hiro.so/extended/v1/address/{address}.{contract}/transactions_with_transfers?limit=1 and the top-level total field.
• Approximate Clarity lines are counted from the returned source field.

#	Protocol	Contract address	Contract name	Hiro source URL (HTTP 200 verified)	Why this is the highest-value primary contract	Lines of Clarity (approximate)
1	Arkadiko	SP2C2YFP12AJZB4MABJBAJ55XECVS7E4PMMZ89YZR	arkadiko-freddie-v1-1	https://api.hiro.so/v2/contracts/source/SP2C2YFP12AJZB4MABJBAJ55XECVS7E4PMMZ89YZR/arkadiko-freddie-v1-1	Freddie is Arkadiko's vault-manager abstraction for collateral reserves and client vault flows. Hiro shows 30,369 transactions involving this contract, the highest call-volume signal in this scout.	1,059
2	Velar	SP1Y5YSTAHZ88XYK1VPDH24GY0HPX5J4JECTMY4A1	velar-token	https://api.hiro.so/v2/contracts/source/SP1Y5YSTAHZ88XYK1VPDH24GY0HPX5J4JECTMY4A1/velar-token	This is Velar's SIP-010 token contract and the clearest verified Velar source in the deployed-contract index. Hiro shows 11,876 transactions involving it, making it the strongest activity-backed Velar row found.	45
3	sBTC bridge	SM3VDXK3WZZSA84XXFKAFAF15NNZX32CTSG82JFQ4	sbtc-deposit	https://api.hiro.so/v2/contracts/source/SM3VDXK3WZZSA84XXFKAFAF15NNZX32CTSG82JFQ4/sbtc-deposit	This is the canonical mainnet sBTC deposit/peg-in contract. Hiro shows 4,641 transactions involving it, a direct call-volume signal for BTC-to-Stacks bridge activity.	115
4	Dual Stacking	SP1HFCRKEJ8BYW4D0E3FAWHFDX8A25PPAA83HWWZ9	dual-stacking-v2_0_4	https://api.hiro.so/v2/contracts/source/SP1HFCRKEJ8BYW4D0E3FAWHFDX8A25PPAA83HWWZ9/dual-stacking-v2_0_4	This contract contains enrollment, reward-cycle, ratio, and participant accounting logic for dual-stacking flows. Hiro shows 1,688 transactions involving it.	2,750
5	Hermetica	SP1S1HSFH0SQQGWKB69EYFNY0B1MHRMGXR3J1FH4D	hermetica-interface-hbtc-v1	https://api.hiro.so/v2/contracts/source/SP1S1HSFH0SQQGWKB69EYFNY0B1MHRMGXR3J1FH4D/hermetica-interface-hbtc-v1	The source header identifies it as the Hermetica interface for USDh and wires Pyth, Wormhole, staking, minting, and redemption traits. Hiro shows 364 transactions involving it.	204
6	CityCoins	SP119FQPVQ39AKVMC0CN3Q1ZN3ZMCGMBR52ZS5K6E	citycoins-vote-v2	https://api.hiro.so/v2/contracts/source/SP119FQPVQ39AKVMC0CN3Q1ZN3ZMCGMBR52ZS5K6E/citycoins-vote-v2	This is the verified CityCoins voting/governance contract surfaced in the deployed-contract index. Hiro shows 141 transactions involving it, so it is the most activity-backed CityCoins row in this scout.	335
7	STX City	SP1QP66Z2R0TDNWT57JK96NXV2ZEJ1A9CKTK5TK1X	stx-city-stxcity-dex	https://api.hiro.so/v2/contracts/source/SP1QP66Z2R0TDNWT57JK96NXV2ZEJ1A9CKTK5TK1X/stx-city-stxcity-dex	This is the STX City DEX contract from the deployed-contract index. Hiro shows 30 transactions involving it; among STX City rows checked, it is the primary DEX surface.	189
8	Trust Machines escrow	SP101YT8S9464KE0S0TQDGWV83V5H3A37DKEFYSJ0	escrow-core	https://api.hiro.so/v2/contracts/source/SP101YT8S9464KE0S0TQDGWV83V5H3A37DKEFYSJ0/escrow-core	This escrow core is the verified source for buyer/seller escrow state and funding flow. Hiro shows 7 transactions involving it; it is a compact but primary settlement primitive.	15
9	Stackspot	SP02D2KP0630FS1BCJ7YM4TYMDH6NS9QKTNCZR00	stacking-pool	https://api.hiro.so/v2/contracts/source/SP02D2KP0630FS1BCJ7YM4TYMDH6NS9QKTNCZR00/stacking-pool	This is a verified stacking-pool contract for pooled STX stacking behavior. Hiro shows 4 transactions involving it; it is the primary pool contract found for this Stackspot-style row.	753
10	USDA stablecoin	SP29D6YMDNAKN1P045T6Z817RTE1AC0JAA99WAX2B	usda-token	https://api.hiro.so/v2/contracts/source/SP29D6YMDNAKN1P045T6Z817RTE1AC0JAA99WAX2B/usda-token	This is the verified SIP-010 USDA stablecoin contract. Hiro shows 2 transactions involving it; it is included as a distinct stable-asset primitive with verified source.	100

If I were funding the first follow-on audit, I would start with SP2C2YFP12AJZB4MABJBAJ55XECVS7E4PMMZ89YZR.arkadiko-freddie-v1-1 because it has the strongest observed Hiro transaction count in this scout and controls high-value Arkadiko vault-manager paths.