Whitepaper · version 2.0
United Sodality Digital Trethor
A dollar-referenced settlement unit with a fixed authorised mint, issued once and mirrored across four networks under a burn-and-mint bridge.
Abstract
USDT.s — United Sodality Digital Trethor — is a dollar-referenced token whose entire supply is authorised once, at 25,000,000,000 units, and never expanded. It exists on BNB Chain, Ethereum, Arbitrum and Solana as one liability rather than four, because bridging burns supply on the origin network before minting it on the destination. Units enter circulation only against reserve deposits held in cash and short-dated government paper, attested quarterly by an independent firm, and verified holders may redeem against those reserves at par. This paper sets out the specification, the bridge model, the reserve policy, the completed migration from the Sodality identity, and the risks.
01
Introduction
A dollar on one chain is rarely the same instrument as a dollar on another. Each network tends to accumulate its own wrapped, bridged and synthetic versions, and every one of them prices slightly differently, breaks differently, and has to be reconciled separately by anyone running a treasury. The cost of that fragmentation is not theoretical: it shows up as spread, as failed settlement, and as reconciliation work that scales with the number of chains a business touches.
Sodality was built by people doing that reconciliation by hand. USDT.s is the conclusion we drew from it — that the useful primitive is not another chain-specific dollar, but a single unit with one authorised supply that can be present on several chains without ever being duplicated.
02
Design goals
- Fixed authorisation. The mint is set once at 25,000,000,000 units. There is no inflation schedule and no discretionary issuance beyond it.
- One liability across chains. Total supply across all four networks is invariant under bridging.
- Verifiable backing. Reserves are held with regulated custodians and itemised in quarterly attestations.
- A redemption floor. Institutional redemption at par gives the market reference something to arbitrage against.
- No transfer friction. Zero buy tax, zero sell tax, no rebasing, no balance rewriting.
- Boring by construction. A settlement unit should be the least interesting asset in a portfolio.
03
Token specification
| Name | United Sodality Digital Trethor | ||
| Symbol | USDT.s | ||
| Authorised mint | 25,000,000,000 (fixed) | ||
| Reference | 1 USDT.s → 1.00 USD | ||
| Decimals | 18 on EVM networks; 9 on Solana (SPL) | ||
| Standards | BEP-20 · ERC-20 · ARB20 · SPL | ||
| Canonical chain | BNB Chain | ||
| Transfer tax | 0% buy · 0% sell | ||
| Rebasing | None. Balances change only by transfer, mint or burn. | ||
| Primary market | PancakeSwap v3 (BNB Chain) | ||
On the name. USDT.s abbreviates United Sodality Digital Trethor. It is issued by Sodality Digital and is not affiliated with, endorsed by, or redeemable against Tether Operations Limited or its USD₮ token. Verify tokens by contract address, never by ticker.
04
Four-chain architecture
BNB Chain holds the canonical mint. The deployments on Ethereum, Arbitrum and Solana are mirrors: they can only hold supply that has been removed from another network first.
Burn and mint, never lock and wrap
A transfer between chains runs in three steps. Supply is burned on the origin network; the burn is attested by the bridge validator set; an equal amount is minted on the destination. There is no locked pool to drain and no wrapped derivative that can trade away from its underlying, because the underlying does not continue to exist on the origin chain.
The consequence is an invariant worth stating plainly: the sum of USDT.s supply across BNB Chain, Ethereum, Arbitrum and Solana is always equal to the amount issued against reserves, and never exceeds the 25,000,000,000 authorisation.
Validator set
Bridge messages require a threshold of independent signers. Signers are published, rotate on a fixed schedule, and no single party — Sodality included — holds a number of keys sufficient to mint alone. Bridge contracts carry a per-message and per-day ceiling, so a compromised threshold bounds the damage rather than ending the network.
Decimals across standards
EVM deployments use 18 decimals; Solana uses 9, the SPL convention. The bridge scales amounts on crossing and rejects any transfer that would round, so no value is created or destroyed by precision.
05
Reserve and attestation
Units enter circulation only against a deposit. The reserve target is full coverage of circulating supply, held as:
- Cash and cash equivalents at regulated custodian banks.
- Short-dated government paper, ordinarily under 90 days to maturity, held to maturity rather than traded.
The reserve does not hold the network's own token, affiliate paper, or illiquid assets against circulating supply. Treasury and unissued allocations sit in the vault contract and are excluded from circulating supply, so they are neither counted as backing nor as float.
Attestation
An independent accounting firm attests holdings quarterly. Each report itemises custodian, instrument, maturity and amount, alongside circulating supply per chain at the reporting timestamp. Reports are published in full rather than summarised. From 2026 Q4 a live dashboard publishes per-chain supply and custodian balances daily, between attestations.
06
Stability mechanism
USDT.s is not algorithmic. Nothing in the contract defends a price, and no protocol-owned mechanism buys the token to hold it up. Stability comes from one place: the ability to redeem at par against reserves.
Verified institutional holders may present USDT.s for redemption at 1.00 USD less processing costs, with settlement in fiat. Redeemed units are burned, permanently reducing circulating supply. If the market trades below the reference, redemption is profitable and supply contracts; if it trades above, issuing against a fresh deposit is profitable and supply expands, up to the authorisation. Retail holders transact on the open market, where that arbitrage does the work on their behalf.
A reference is a target, not a guarantee. Market price can and does deviate, particularly under stress or thin liquidity. Redemption is available to verified holders under the terms published at redemption, and those terms — including pauses during custodian outages — are part of the risk.
07
Migration from Sodality
The network launched in 2025 Q3 under the name Sodality. In 2026 Q2 the token adopted the identity described in this paper: the name United Sodality Digital Trethor, the symbol USDT.s, and a new mark.
This was a metadata change on the existing contract, not a redeploy and not a token swap. The contract address is unchanged. Every balance is unchanged. No holder was required to claim, migrate, approve or connect anything, and no legitimate process will ever ask them to.
- On-chain name and symbol — updated, 2026 Q2.
- Icon — sodalite disc replaced the legacy hexagon across token list repositories, 2026 Q2.
- Explorers — BscScan, Etherscan and Arbiscan updated, 2026 Q2.
- Wallets and aggregators — in progress; caches refresh on each provider's own schedule.
- Listing venues — ticker changes scheduled through 2026 Q4.
Live status for each venue is published on the migration progress page.
08
Allocation
The 25,000,000,000 authorised units divide as follows. Only the reserve-backed float is issuable against deposits; the remainder is held in the vault contract and is not circulating supply.
| Allocation | Share | Units | Terms |
|---|---|---|---|
| Reserve-backed float | 60% | 15,000,000,000 | Issued only against verified deposits |
| Liquidity & market making | 15% | 3,750,000,000 | PancakeSwap pools, cross-chain depth |
| Treasury | 12% | 3,000,000,000 | Vault contract, multi-signature |
| Ecosystem & integrations | 8% | 2,000,000,000 | Merchant onboarding, bridge incentives, grants |
| Team & operations | 5% | 1,250,000,000 | 36-month linear vesting, 12-month cliff |
09
Governance and controls
What is fixed in code
The 25,000,000,000 authorisation is a contract-level constant. No key, multisig or vote can raise it. Bridge ceilings and the burn-before-mint ordering are likewise enforced in code rather than by policy.
What is held by keys
Issuance against deposits, redemption burns, bridge signer rotation and metadata updates are multi-signature operations. Signers are named, thresholds are published, and privileged actions are announced before execution wherever the schedule allows.
Freeze authority
A freeze function exists and is used only to comply with a binding legal order or to contain an active exploit. Every use is disclosed with the reason and the affected addresses. We would rather state plainly that the function exists than have holders discover it at the worst moment.
10
Risk factors
- Reference risk. Market price may deviate from 1.00 USD, and the deviation may persist.
- Custodian risk. Reserves sit with banks and custodians. Their failure, or a freeze on their accounts, impairs redemption.
- Bridge risk. A compromise of the validator threshold could mint unbacked supply on a destination chain up to the configured ceilings.
- Contract risk. Audits reduce the chance of a defect; they do not remove it.
- Liquidity risk. Thin pools widen spreads and can make exit at the reference impossible in size.
- Regulatory risk. Stablecoin rules are moving in every major jurisdiction. Changes may restrict issuance, redemption or availability.
- Key risk. Multi-signature reduces but does not eliminate the consequences of key compromise.
- Total loss. Any of the above can result in the loss of the full value held.
11
Legal notice
This document is published for information. It is not investment advice, not a prospectus, and not an offer or solicitation to buy or sell any security or financial instrument in any jurisdiction. Nothing in it should be read as a promise of value, yield or return.
USDT.s and United Sodality Digital Trethor are issued by Sodality Digital. They are independent of, and not affiliated with, endorsed by, or redeemable against Tether Operations Limited or its USD₮ token, or any other issuer. Similarity of ticker is not a claim of association.
Forward-looking statements — roadmap items, planned listings, planned dashboards — describe current intent and may change. Verify every contract address against this site before transacting, and treat any request to send tokens for an upgrade, migration or claim as fraudulent.