AML check on Sonic
Sonic (S) is the EVM chain that replaced Fantom (FTM). Addresses start with 0x, like Ethereum, but Sonic is a separate network from the old Fantom Opera chain.
Before you send anything, check that both you and the recipient are on Sonic (chain ID 146), not Fantom Opera (chain ID 250) or Ethereum: the same 0x address can exist on each, but every network keeps its own balances.
Services that check Sonic
How to check a Sonic address
- Get the public addressAsk your counterparty for the address they will send from — or copy it from the incoming transaction.
- Pick a service that covers SonicChoose one marked “Supported” in the list above. Upgrade FTM only through Sonic's official portal (my.soniclabs.com/upgrade) or bridge with the Sonic Gateway linked from Sonic's docs; Sonic Labs says it is not affiliated with third-party bridges.
- Run the check and read itWhen an AML checker scores a 0x address, confirm which network it scanned: a result for Fantom Opera or Ethereum says nothing about the same address on Sonic.
Sonic specifics
- Sonic launched on 18 December 2024 with S as its native token, and FTM holders can upgrade FTM to S at a 1:1 ratio.[1]
- For the first 90 days after launch FTM and S could be swapped both ways, after that only FTM to S; the old Fantom Opera chain keeps running, but development has moved to Sonic.[2]
- Wallets connect to Sonic mainnet using chain ID 146, and the official block explorer is sonicscan.org.[3]
- Fantom Opera, the older chain, uses chain ID 250, so it is a different network from Sonic even though addresses look identical.[4]
- The Sonic Gateway, Sonic's own bridge to Ethereum, batches transfers about every 10 minutes into Sonic and about every hour back to Ethereum, and lets users recover bridged funds on Ethereum if it fails for 14 days in a row.[5]
- In July 2023 an exploit of the third-party Multichain bridge drained over $210 million across several chains; the Fantom Foundation says Fantom ecosystem losses were about one-third of the total, and a Singapore High Court later granted it a default judgment against Multichain.[6]
Common risks on Sonic
FAQ
Is my Fantom address the same on Sonic?
It looks the same because both are EVM chains, but Fantom Opera (chain ID 250) and Sonic (chain ID 146) are separate networks with separate balances. FTM on Fantom Opera has to be upgraded to S through Sonic's official process.
What is the FTM to S rate, and can I still swap back?
1 FTM converts to 1 S. Swaps worked both ways only for the first 90 days after Sonic launched on 18 December 2024; after that it is FTM to S only.
What happens if the Sonic Gateway bridge stops working?
According to Sonic's docs, if the Gateway fails for 14 consecutive days, users can recover their bridged funds on Ethereum. Sonic Labs says this 14-day period cannot be changed after deployment.
How do I check a Sonic address for AML risk?
Copy the public address, open one of the services listed above that supports Sonic, and run the check. You never need a seed phrase or private key.
What does “Not verified” mean?
The service claims support somewhere — in marketing copy or a third-party page — but its own docs, pricing or FAQ do not list the network. Treat it as unknown.
Sources
- Sonic Labs — The Ultimate Sonic Upgrade Handbook: FTM to S (31 Dec 2024). Checked 4 Oct 2026.
- Sonic Labs (official docs) — Migration: Overview. Checked 4 Oct 2026.
- Sonic Labs (official docs) — Wallets. Checked 4 Oct 2026.
- Fantom Foundation (official docs) — Public endpoints. Checked 4 Oct 2026.
- Sonic Labs (official docs) — Sonic Gateway. Checked 4 Oct 2026.
- Fantom Foundation — Fantom Foundation Awarded Default Judgement Against Multichain (4 Mar 2024). Checked 4 Oct 2026.