CUSTODY PROTOCOL

Proof of
Personal Custody

A voluntary time-bound commitment protocol with automatic economic consequences. Participants prove custody of precious metals, backed by SOST bonds, audited by ConvergenceX block entropy. No oracle. No custodian. No governance.

PoPC | 25% of coinbase · ConvergenceX entropy audits · Automatic slashing
OVERVIEW

What PoPC Is

NOT A GOLD TOKEN
PoPC does not tokenize gold. Does not promise yield, stability, or redeemability. It is a commitment protocol with automatic consequences.
VOLUNTARY COMMITMENT
A participant promises to maintain custody of precious metals for a defined period, backs that promise with a SOST bond, and is rewarded if they keep their word.
AUTOMATIC ENFORCEMENT
If they break their commitment, their bond is slashed automatically — no human judge involved. Audit schedule derived from PoW entropy.
UNIQUE IN CRYPTO
Lock SOST bond → prove custody of real gold (XAUT/PAXG). Audited by PoW entropy. No custodian. No bridge. Unlike MakerDAO, Compound, or any staking protocol.
AUDIT SYSTEM

ConvergenceX Entropy Audits

Deterministic Audit Schedule
ENTROPY-DERIVED

No party — not the Foundation, not any server — decides when a user gets audited. The schedule is derived deterministically from the ConvergenceX entropy triple: (block_id, commit, checkpoints_root).

// Audit seed from ConvergenceX proof seed = SHA256( block_id || commit || checkpoints_root ) // Per-contract trigger r = PRF( seed, contractId, periodIndex ) if r < p(reputation_stars): AUDIT REQUIRED // Verification (script, no humans) 1. User signs message with Ethereum wallet 2. ecrecover() confirms identity 3. token.balanceOf(wallet) ≥ committed_amount 4. if true: checkpoint passed 5. if false: SLASH
0 stars (new)
p = 0.30 — 30% of periods audited
1 star
p = 0.20 — 20% of periods audited
3 stars
p = 0.10 — 10% of periods audited
5 stars (veteran)
p = 0.05 — 5% of periods audited
MODEL A

Commitment with SOST Bond

Model A — Autocustody
FOR CRYPTO NATIVES

The gold never leaves the user’s wallet. Only the SOST bond is at risk. The Foundation has no access to, custody of, or control over the user’s gold tokens.

1. User buys SOST on CEX 2. Declares Ethereum wallet holding XAUT/PAXG 3. Locks SOST bond (dynamic, based on ratio SOST/gold) 4. Commits to maintain custody for 1/3/6/9/12 months 5. ConvergenceX entropy schedules random audits 6. Script verifies XAUT/PAXG balance via Ethereum RPC 7. On completion: recovers bond + reward from PoPC Pool 8. On failure: bond SLASHED automatically
1 month5% of bond in SOST
3 months12% of bond in SOST
6 months20% of bond in SOST
9 months28% of bond in SOST
12 months35% of bond in SOST
Dynamic Bond Sizing
CONSTITUTIONAL C9

Bond is denominated in USD value, converted to SOST at 7-day TWAP. As SOST appreciates relative to gold, the bond percentage increases to maintain deterrence. Sub-collateralization is intentional — compensated by layered deterrence.

ratio < 0.000110% bond // SOST < $0.27
ratio < 0.00115% bond // SOST < $2.70
ratio < 0.0120% bond // SOST < $27
ratio < 0.125% bond // SOST < $270
ratio ≥ 0.130% bond (maximum) // SOST > $270
MODEL B

Timelocked Escrow

Model B — No Audits, No Slash
FOR GOLD INVESTORS

User deposits XAUT/PAXG into an immutable escrow timelock contract (no admin key, no upgrade proxy, no pause function). Receives SOST immediately. At expiry, only the original depositor can withdraw full gold. No early exit.

// Escrow architecture contract = immutable // no proxy, no UUPS, no admin functions: deposit(token, amount, unlockTime) + withdraw(depositId) withdraw = ONLY by original depositor withdraw reverts if block.timestamp < unlockTime Foundation CANNOT access escrowed gold // SOST reward delivered IMMEDIATELY at deposit SOST_reward = gold_value × APR(duration) × (months / 12) / sost_price // User keeps SOST from day 1 — no vesting, no clawback
1 month3% APR on gold value, paid in SOST at deposit
3 months4% APR on gold value, paid in SOST at deposit
6 months5% APR on gold value, paid in SOST at deposit
9 months6% APR on gold value, paid in SOST at deposit
12 months7% APR on gold value, paid in SOST at deposit
ENFORCEMENT

Slash Mechanics

Automatic Slashing (Model A only)
CONSTITUTIONAL C7/C8

Every fraud detected burns supply, rewards honest participants, and buys more gold for the reserve. Dishonesty strengthens the protocol. No human can override once triggered.

Trigger
Balance < Committed
or 48h no-response
after GRACE
33.33%
BURN
Permanent deflation
33.33%
PoPC Pool
Future rewards
33.33%
Gold Vault
Buys more gold
EXTENSIONS

Physical Gold & ZK Proofs

Year 2–3: Physical Gold
EXTENSION

PoPC extends to physical gold (bars, coins, ingots). Users commit to custody of physical precious metals. Audit challenges derived from ConvergenceX entropy, executed via mobile app. No gold amount, location, or identity on-chain.

Year 3+: ZK Proofs
R&D

Zero-Knowledge proofs certify that the correct challenge algorithm executed correctly — without revealing data. Scope extends to platinum, palladium, rhodium. Will not deploy in a degraded state. Participants’ physical security is a non-negotiable prerequisite.

Timeline Flexibility Notice: The Foundation reserves the right to accelerate or delay any committed timeline if it determines that the protocol can be implemented with maximum guarantees of technical reliability and security, or if additional development time is required to meet those standards.