TRON Checker vs BlockSec USDT Freeze Checker: a freeze lookup on two chains vs full TRON screening
Verdict. Pick BlockSec for a free USDT freeze lookup on Ethereum and TRON, or a multi-chain AML suite. Pick TRON Checker for TRON counterparties: free freeze status plus an exact OFAC match, then an explainable risk score, PDF evidence and an API paid per check in USDT.
BlockSec's USDT Freeze Checker is a free web tool that tells you whether an Ethereum or TRON address is on Tether's USDT blacklist. BlockSec also runs a USDT Freeze Tracker with event-level data and sells Phalcon Compliance, a multi-chain AML platform. TRON Checker screens public TRON addresses only.
Facts about BlockSec and other vendors were checked on their public pages on and are linked below. Prices and features change; check each vendor's site before you decide.
Side by side
| BlockSec free checker and tracker | BlockSec Phalcon Compliance (paid) | TRON Checker | |
|---|---|---|---|
| What it checks | Whether an address is on Tether's USDT blacklist. BlockSec states it "is not a full AML risk assessment." | Wallet risk, blacklist status, sanctions exposure and on-chain activity; BlockSec cites 600M+ labels and 200+ risk signals. | Free: USDT freeze status, exact OFAC match, evidence confidence and coverage. Deep check: adds OpenSanctions, Chainabuse verified reports, counterparty exposure, sampled 2-hop proximity and flow heuristics. |
| Chains | Ethereum (ERC-20) and TRON (TRC-20) USDT. Not USDC. | Many chains; the free plan covers ETH and TRON only. | TRON only (USDT TRC-20). |
| Freeze-status method | Not documented on the checker page. Shows a "Data as of" timestamp and warns when collector data is over 5 minutes old. | Blacklist status is part of the screening result. | Live read of the Tether USDT contract, cross-checked with TronScan's blacklist index (or indexed Tether events when TronScan is down). If sources disagree, the result is "inconclusive". |
| OFAC | Not part of the checker. | Sanctions screening included; OFAC is not named on the pages we checked. | Exact match against cached OFAC TRON identifiers, in the free check. The dataset date is published. |
| Risk scoring | None. | Risk engine with 200+ signals. | Deterministic 0-100 score, five tiers, published point table, evidence confidence and coverage. |
| Reports / PDF | On-screen result. | CSV and Excel exports, audit report exports, STR/SAR reports (by plan). PDF export is not mentioned in the docs we read. | Saved reports export as JSON, HTML or PDF. The PDF carries a SHA-256 evidence checksum and a glossary. |
| Alerts / monitoring | Free Telegram channel for market-wide freeze, unfreeze, burn and multisig events. | Continuous monitoring; 1 address included on Essential and Scale, add-ons from +$60/month for 10 addresses. | Watchlists for signed-in accounts: alerts on new USDT transfers by email or signed webhook, and a daily re-screen showing each wallet's latest freeze status. |
| API / MCP / AI agents | No public API documented for the checker. | API on Scale (from $699/month) and Enterprise only. No official MCP server found. | REST API (POST /v1/screen) at 1 credit per deep screen. MCP server with a free blacklist tool. x402 pay-per-call: $0.01, $0.10 or $1.00 in USDC on Base, no account. |
| Freeze statistics | Ethereum and TRON: live totals, event explorer with transaction hashes, multisig proposals, daily reports, annual research. No download or reuse license stated. | Not applicable. | TRON only: freezes, unfreezes and destroyed funds by month, updated hourly, aggregates only. Monthly reports. Daily and monthly CSV/JSON under CC BY 4.0. |
| Pricing | Free. | Pay-as-you-go from $95 ($1.10 to $1.90 per screening); Essential from $39/month; Scale from $699/month; Enterprise on request. Billed in USD. | Core check free. Deep checks: 5 for 5 USDT, 25 for 20 USDT, 100 for 60 USDT, or 1 USDT each. No subscription. Paid in USDT on TRON, BNB Smart Chain or Ethereum. |
| Free tier | Free checker; no sign-up mentioned. | 3 screenings per month. | Free core check with no sign-up; 1 free deep check without an account; 3 free credits when you sign up. |
When BlockSec is the better choice
- You also screen Ethereum USDT. BlockSec's free checker handles ERC-20 and TRC-20 addresses in one box. TRON Checker reads TRON only.
- You want event-level freeze data. BlockSec's tracker lists individual freeze, unfreeze and burn events with transaction hashes, shows Tether multisig proposals, keeps a daily report archive and posts events to a Telegram channel. TRON Checker's tracker publishes aggregate counts only.
- You need a multi-chain AML platform. Phalcon Compliance covers more chains, adds entity labels and STR/SAR reporting, and supports team workflows. TRON Checker is a review aid for TRON USDT counterparties, not a full KYT platform.
- Your finance team pays by card in USD. Phalcon Compliance accepts credit card, crypto and digital wallets. TRON Checker accepts USDT only.
- Your stakeholders ask for a widely cited data source. Trade media such as Cointelegraph and CoinMarketCap have reported BlockSec's freeze figures.
When TRON Checker is the better choice
- Your counterparties pay USDT on TRON and you want more than a yes or no. The free check returns freeze status and an exact OFAC match together, with confidence and coverage, and needs no sign-up.
- You need to show how the answer was reached. The freeze status comes from two named sources, a disagreement is reported as inconclusive, and every risk point maps to a published rule and visible evidence.
- You keep a trade file. Save the report and export a PDF with a SHA-256 evidence checksum and a glossary, so a reviewer can read it later without context.
- You want an API without a subscription.
POST /v1/screencosts 1 credit per deep screen, from 0.60 USDT per credit. On Phalcon Compliance, API access starts at the Scale plan, from $699 per month. - You are building an AI agent. Connect the MCP server (free blacklist tool, paid screening and AML report tools) or pay per call with x402, with no account.
- You want to reuse freeze statistics. TRON monthly and daily counts download as CSV or JSON under CC BY 4.0 from the tracker.
Pricing math
Freeze-status-only checks are free on both. The difference appears when you need sanctions and risk screening.
| Monthly need | BlockSec (Phalcon Compliance) | TRON Checker | Difference per year |
|---|---|---|---|
| 3 risk screenings | Free plan: $0 (3 per month, every month) | $0 at first (1 free deep check + 3 sign-up credits, once); then 5 USDT for 5 credits | BlockSec is cheaper at this volume |
| 25 risk screenings | Essential, from $39/month ($468/year) | 20 USDT/month (240 USDT/year) | $228 |
| 100 risk screenings | Essential at 100/month: $109 monthly ($1,308/year) or about $92/month billed annually (about $1,104/year) | 60 USDT/month (720 USDT/year) | $588 vs monthly billing, about $384 vs annual |
| 100 screenings through an API | Scale, from $699/month ($8,388/year), the lowest plan with API access | 60 USDT/month via POST /v1/screen (720 USDT/year) | $7,668 |
| One-off 50 screenings | Screening Package, $95 ($1.90 each, valid 12 months) | 40 USDT | $55 once |
| Monitor 10 wallets | +$60/month add-on on Essential or Scale | Watchlist in a signed-in account; no separate monitoring fee | $720 |
- BlockSec prices from the Phalcon Compliance FAQ and BlockSec's pricing explainer, checked November 12, 2026. The $39 Essential price is assumed to include 25 screenings, the low end of the stated range.
- BlockSec bills in USD; TRON Checker bills in USDT. The difference column treats 1 USDT as 1 USD and is not exact.
- The products are not equivalent. A Phalcon Compliance screening covers many chains and a large label database. A TRON Checker deep check covers one TRON address using public data and published rules.
How to switch, or use both
About 5 minutes. There is nothing to import, because BlockSec's free checker does not hold account data.
- Keep BlockSec's free checker for Ethereum (ERC-20) addresses. TRON Checker does not screen Ethereum.
- Paste the TRON address you checked on BlockSec into /check. You get freeze status and an exact OFAC result without signing up.
- If the address needs a closer look, run a deep check. Visitors get 1 free deep check without an account; signing up adds 3 free credits.
- Save the report and export the PDF. Store it with the trade or ticket ID.
- Add important counterparties to your watchlist to get email or webhook alerts on new USDT transfers.
- Moving a list of addresses? Export it as CSV, keep
addressandlabelcolumns, and upload it on the batch page, up to 500 rows per file. - To automate, create an API key in Settings and call
POST /v1/screen, or connect an AI agent through the MCP server. Buy credits with USDT on TRON, BNB Smart Chain or Ethereum; the transfer is detected automatically.
FAQ
Is the BlockSec USDT Freeze Checker free?
Yes. BlockSec's FAQ says the checker is free to use, and it covers USDT on Ethereum (ERC-20) and TRON (TRC-20). TRON Checker's core check is also free, with no sign-up, but it covers TRON only.
Does BlockSec's freeze checker screen OFAC sanctions?
No. BlockSec's checker page says a blacklist check is not a full AML risk assessment and points to Phalcon Compliance for sanctions screening, which has 3 free screenings per month. TRON Checker includes an exact match against cached OFAC TRON identifiers in its free check.
Can TRON Checker check an Ethereum USDT address?
No. TRON Checker reads the TRON USDT contract only. Tether keeps a separate blacklist on each chain, so an Ethereum address needs a tool that reads the Ethereum contract, such as BlockSec's checker or Etherscan.
Which is cheaper if I need an API?
On Phalcon Compliance, API access is limited to the Scale plan (from $699 per month) and Enterprise, per BlockSec's pricing pages checked November 12, 2026. TRON Checker's API costs 1 credit per deep screen, from 0.60 USDT per credit, with no subscription. AI agents can also pay per call with x402, from $0.01 in USDC.
Can AI agents use either tool?
TRON Checker runs an MCP server with a free blacklist tool and two paid tools, and supports x402 payments. We did not find an official BlockSec MCP server for freeze checks on November 12, 2026; a community-built Phalcon MCP server exists for transaction analysis.
Can I reuse the freeze statistics?
BlockSec asks readers to copy period totals with data timestamps and a source link; we found no download or license on its pages. TRON Checker publishes TRON monthly and daily freeze counts as CSV and JSON under CC BY 4.0, with addresses excluded.
Check the TRON address you just looked up
See its freeze status and OFAC result together, free, with the sources that agreed.
Risk scores are informational indicators only. They are not legal advice, a compliance determination, or an automated accept/reject instruction.
Sources
- BlockSec USDT Freeze Checker
- BlockSec USDT Freeze Tracker
- Phalcon Compliance FAQ
- Phalcon Compliance plans
- BlockSec pricing explainer
- Phalcon wallet screening
All checked . TRON Checker facts: methodology, data sources, pricing.
BlockSec and Phalcon are names of their respective owners. TRON Checker is not affiliated with them. TRON Checker results are informational and do not replace a compliance program.
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