Blockchain Transmission Protocol (BTP)

The blockchain transmission protocol (BTP) is the ICON project's bespoke cross-chain communication protocol for heterogenous blockchains.
dApps interact with BTP through the xCall contract. Testnet xCall contract addresses are listed below. For more information on xCall, see the xCall section and standard​
A sample dApp is provided for demonstration purposes.
BTP Testnet Network Information
This section contains BTP's official deployment information.
BTP is currently under active development and is subject to significant outages. If you want to develop with BTP at this time, we recommend using the local setup found here https://github.com/icon-project/btp2/tree/main/e2edemo​
ICON Berlin Testnet
Domain
RPC URL: https://berlin.net.solidwallet.io/api/v3/icon_dex
Network: 0x7.icon
BTP Network ID:
BSC: 0x1
ETH2: 0x2
Start Height (Block):
BSC: 6229774
ETH2: 6229184
Contracts
Contract
Address
Note
BMC
cxf1b0808f09138fffdb890772315aeabb37072a8a
​
BSC BMV
cx57b9817bfa313afeffc459b19e8dab973f7b4e82
Bridge Mode
ETH2 BMV
cx495e239a7a365459926e1f2c20b3cb6d42fe15e2
Bridge Mode
XCALL
cxf4958b242a264fc11d7d8d95f79035e35b21c1bb
​
Demo DAPP
cx92283a47a95164bd3d604da08128886125593545
​
BSC Testnet Testnet
Domain
RPC URL: https://data-seed-prebsc-1-s1.binance.org:8545
Network: 0x61.bsc
Start Height (Block): 28463560
Contracts
BMCM
0xFd82803c9b2E92C628846012c6E5016Ac380f68d
​
BMCS
0x6AB5fB039ABbEE20bf43F84393E528015686fB04
​
BMC
0x193eD92257E0773ccBA097e0ba4110E588eb0F1c
​
BMV
0xAfDa56289E92338514B5aBF0bf22A7dcA60d7e09
Trustless
XCALL
0x6193c0b12116c4963594761d859571b9950a8686
​
Demo DAPP
0xb072b7d60C143944fdBb45E22A3ae04DcD0b7432
​
ETH2 Testnet Testnet
Domain
RPC URL: https://sepolia.infura.io/v3/ffbf8ebe228f4758ae82e175640275e0
Network: 0xaa36a7.eth2
Start Height (Block): 3185472
Contracts
Contract
Address
Note
BMCM
0x39FBbE3AeCbe6ED08baf16e13eFE4aA31550CaA2
​
BMCS
0xd6298BBB8b8B8EA273C3CB470B273A1cef552Ef3
​
BMC
0x50DD9479c45085dC64c6F0a0796040C7768f25CE
​
BMV
0x684ba8F34f9481f7F02aCd4F143506E11AC19E3E
Trustless
XCALL
0x9B68bd3a04Ff138CaFfFe6D96Bc330c699F34901
​
Demo DAPP
0x0FcBB34A8468CaA65d3f81CAef8C42E43043687c
​
Reference link: https://github.com/iconloop/btp2-testnet​
Resources
BTP Litepaper: https://icon.community/assets/btp-litepaper.pdf​
ICON BTP Standard: https://github.com/icon-project/IIPs/blob/master/IIPS/iip-25.md​
ICON BTP Fee Gathering Standard: https://github.com/icon-project/IIPs/blob/master/IIPS/iip-35.md​
ICON BTP Message Fragmentation Standard: https://github.com/icon-project/IIPs/blob/master/IIPS/iip-40.md​
ICON BTP Arbitrary Call Service Standard: https://github.com/icon-project/IIPs/blob/master/IIPS/iip-52.md​

Contract	Address	Note
BMC	cxf1b0808f09138fffdb890772315aeabb37072a8a
BSC BMV	cx57b9817bfa313afeffc459b19e8dab973f7b4e82	Bridge Mode
ETH2 BMV	cx495e239a7a365459926e1f2c20b3cb6d42fe15e2	Bridge Mode
XCALL	cxf4958b242a264fc11d7d8d95f79035e35b21c1bb
Demo DAPP	cx92283a47a95164bd3d604da08128886125593545

Contract	Address	Note
BMCM	0x39FBbE3AeCbe6ED08baf16e13eFE4aA31550CaA2
BMCS	0xd6298BBB8b8B8EA273C3CB470B273A1cef552Ef3
BMC	0x50DD9479c45085dC64c6F0a0796040C7768f25CE
BMV	0x684ba8F34f9481f7F02aCd4F143506E11AC19E3E	Trustless
XCALL	0x9B68bd3a04Ff138CaFfFe6D96Bc330c699F34901
Demo DAPP	0x0FcBB34A8468CaA65d3f81CAef8C42E43043687c

Last modified 1mo ago

BMCM	0xFd82803c9b2E92C628846012c6E5016Ac380f68d
BMCS	0x6AB5fB039ABbEE20bf43F84393E528015686fB04
BMC	0x193eD92257E0773ccBA097e0ba4110E588eb0F1c
BMV	0xAfDa56289E92338514B5aBF0bf22A7dcA60d7e09	Trustless
XCALL	0x6193c0b12116c4963594761d859571b9950a8686
Demo DAPP	0xb072b7d60C143944fdBb45E22A3ae04DcD0b7432