PoPC Bond Staking — Single Native SOST Bond

PoPC Bond Staking

Specification for the single native SOST bond — the only collateral and the only slashable asset in PoPC. A staking product: create a bond, monitor it, then claim your reward. Its V15 / #25,000 activation height is now past, and the bond model is paused / superseded by DTD (legacy / reference). Gold Boost is an optional reward boost only — never collateral, never slashed — and is disabled on mainnet. The earlier Model A / Model B Ethereum SOSTEscrow design below is preserved as historical / superseded reference.

☰ CURRENT MODEL — SINGLE NATIVE SOST BOND — PoPC has been redesigned to a single native SOST bond: the only collateral and the only slashable asset. It is a staking product — create / monitor / claim — whose V15 / #25,000 activation height is now past; the bond model is paused / superseded by DTD (legacy / reference). This single-bond model supersedes Model A, Model B and the Ethereum SOSTEscrow design shown further down this page, which is retained only as historical reference. Gold Boost is an optional reward boost only — never collateral, never slashed — and is disabled on mainnet. Everything below referencing the Ethereum escrow / XAUT-PAXG verification / Model A / Model B is HISTORICAL / SUPERSEDED.

HISTORICAL — SEPOLIA ESCROW ALPHA (SUPERSEDED) PHASE VI

MODE

operator-assisted alpha

SEPOLIA ESCROW

not deployed (historical)

LATEST DEMO DEAL

none yet

CRYPTO

ED25519 real signatures

⚠ Historical / superseded. This Ethereum SOSTEscrow alpha is no longer the PoPC model. The current PoPC is the single native SOST bond (create / monitor / claim), activating V15 / block 25,000. Non-custodial swaps live in the separate Atomic Swap DEX — SOST never custodies funds.

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Live Stats

Gold Committed (Protocol)

...

loading from Ethereum RPC

Active Contracts

Model A + Model B (superseded naming — single native bond)

Total Rewards Paid

0 SOST

From PoPC Pool

Total Participants

Unique wallets

Contracts by Model

Monthly Rewards Paid

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Model A vs Model B — HISTORICAL

HISTORICAL / SUPERSEDED. The two-model design below (MODEL A — self-custody bonds, MODEL B — Ethereum escrow) is the earlier PoPC architecture. It has been superseded by the single native SOST bond (the only collateral, the only slashable asset). The single bond is a staking product — create / monitor / claim — and is not tradeable in the current release (V30000). The figures below are kept for reference only.

Contract Models Comparison — historicalHISTORICAL / SUPERSEDED

Parameter	Model A — Self-Custody — HISTORICAL	Model B — Escrow — HISTORICAL
Gold location	User's own Ethereum wallet (EOA)	SOSTEscrow contract on Ethereum
Bond requirement	10–25% of gold value (by SOST/gold ratio)	None
Reward payout	On successful completion	Immediate upon registration
Protocol fee	3% (POPC_PROTOCOL_FEE_A_BPS = 300)	8% (POPC_PROTOCOL_FEE_B_BPS = 800)
Audits	Entropy-based via ConvergenceX (30%–5% by reputation)	None (escrow is self-verifying)
Slash risk	Yes — 50% to PoPC Pool / 50% to Gold Vault	None
Transferable	Historical design only — the current single native SOST bond is NOT tradeable in the current release (V30000) (no position/contract trading)
Discount rate (pricing)	12% annually (higher risk)	5% annually (lower risk)
Reward floor	1% or 10 SOST minimum (POPC_REWARD_FLOOR_A)	0.5% or 5 SOST minimum (POPC_REWARD_FLOOR_B)
Hard cap per contract	1,000 SOST (POPC_MAX_REWARD_STOCKS = 100,000,000,000 stocks)
Max active contracts	1,000 (POPC_MAX_ACTIVE_CONTRACTS)
Durations	1, 3, 6, 9, 12 months (POPC_DURATIONS)
Blacklist threshold	After 3 slashes

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Reward Rates

Base Reward Rates by DurationPOPC_REWARD_RATES / ESCROW_REWARD_RATES

Duration	Model A (% of bond)	Model B (% of gold value)
1 month	1% (100 bps)	0.4% (40 bps)
3 months	4% (400 bps)	1.5% (150 bps)
6 months	9% (900 bps)	3.5% (350 bps)
9 months	14% (1,400 bps)	5.5% (550 bps)
12 months	20% (2,000 bps)	8% (800 bps)

Model A formula: reward_stocks = (bond_stocks × reward_pct_bps) / 10,000
Model B formula: reward_stocks = (gold_value_stocks × reward_pct_bps) / 10,000
All arithmetic is integer-only. No floating-point in consensus. 1 SOST = 100,000,000 stocks.

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Bond Sizing

Model A Bond Percentage (Constitutional §6.5)compute_bond_pct()

Bond percentage is determined by the SOST/gold price ratio. When SOST is cheap relative to gold, bonds are larger to compensate for lower collateral value.

Formula: ratio_bps = (sost_price_usd / gold_oz_price_usd) × 10,000

SOST/Gold Ratio (bps)	Bond %	Meaning
< 100 bps	25%	SOST very cheap vs gold → maximum collateral
100 – 500 bps	20%	Low ratio
500 – 1,000 bps	15%	Standard ratio
1,000 – 5,000 bps	12%	Elevated ratio
≥ 5,000 bps	10%	SOST expensive vs gold → minimum collateral

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Anti-Whale Tiers

Gold Amount Reward Multiplierswhale_tier_multiplier()

Gold Amount	Milligrams	Reward Multiplier
0 – 10 oz	0 – 311,035 mg	100% (WHALE_MULT_T1 = 10,000)
10 – 50 oz	311,035 – 1,555,175 mg	75% (WHALE_MULT_T2 = 7,500)
50 – 200 oz	1,555,175 – 6,220,700 mg	50% (WHALE_MULT_T3 = 5,000)
> 200 oz	> 6,220,700 mg	REJECTED — returns 0

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Dynamic Reward Adjustment

Pool Utilization Ratio (PUR)compute_pur_bps() · compute_dynamic_factor_bps()

Rewards decrease quadratically as the pool becomes more committed. This prevents over-commitment and ensures long-term sustainability.

PUR = (committed_rewards_stocks × 10,000) / pool_balance_stocks
dynamic_factor = (10,000 − PUR)² / 10,000 — quadratic: (1 − PUR)²
applied_reward = max(base_rate × factor / 10,000, floor_bps)

PUR Level	Meaning	Effect
0%	Pool fully available	100% of base reward
50%	Half committed	25% of base reward
80% (PUR_WARNING_BPS)	Warning threshold	4% of base reward + accept with warning
100% (PUR_CLOSED_BPS)	Pool fully committed	No new registrations accepted

Participation Tier Multiplierscompute_tier_multiplier()

Early participants earn higher rewards. As more contracts are registered, the multiplier decreases.

Active Contracts	Multiplier	Effective Rate
0 – 25	100% (10,000 bps)	Full base rate
26 – 50	75% (7,500 bps)	¾ of base rate
51 – 100	50% (5,000 bps)	½ of base rate
101 – 200	30% (3,000 bps)	Less than ⅓
201 – 500	15% (1,500 bps)	Diminishing returns
501 – 1,000	8% (800 bps)	Near-minimum rate
> 1,000	5% (500 bps)	Fallback minimum

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Reputation & Audits

Reputation Star SystemModel A only

Stars	Status	Audit Probability	Max Gold Allowed
0 ☆	New (POPC_STARS_NEW)	30% (300 per mille)	0.5 oz (15,552 mg)
1 ★	Established (POPC_STARS_ESTAB)	20% (200 per mille)	1 oz (31,103 mg)
3 ★★★	Trusted (POPC_STARS_TRUSTED)	10% (100 per mille)	3 oz (93,310 mg)
5 ★★★★★	Veteran (POPC_STARS_VETERAN)	5% (50 per mille)	10 oz (311,035 mg)

Entropy-Based Audit MechanismConvergenceX Triple

Audits are triggered deterministically from block entropy. No oracle, no human decision, no external randomness source.

audit_seed = SHA256(block_id [32] || commit [32] || checkpoints_root [32])
trigger_hash = SHA256(audit_seed [32] || commitment_id [32] || period_index_le16 [2])
triggered = first_4_bytes_le32(trigger_hash) % 1000 < audit_prob_permille

Parameter	Value
Grace period	288 blocks (~48 hours) — POPC_AUDIT_GRACE_BLOCKS
Slash on failure	50% to PoPC Pool + 50% to Gold Vault
Blacklist threshold	3 slashes → permanently blacklisted
Entropy source	ConvergenceX proof triple (block_id, commit, checkpoints_root)

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SOSTEscrow Contract — HISTORICAL

HISTORICAL / SUPERSEDED. The Ethereum SOSTEscrow contract (the old Model B) is no longer part of the PoPC model. PoPC is now the single native SOST bond on the SOST chain — there is no Ethereum escrow in the current design. The addresses and parameters below describe a past testnet experiment and are not an active, deployed or live mainnet product.

Ethereum Escrow Smart Contract (Model B — historical)HISTORICAL / SUPERSEDED

The SOSTEscrow contract was the historical Model B escrow for tokenized gold. This design has been superseded by the single native SOST bond; the addresses below reference a former Sepolia testnet experiment (mock tokens only) and are not a live or deployed product.

HISTORICAL SEPOLIA TESTNET REFERENCE (chain_id: 11155111 — superseded)
SOSTEscrow: 0x01Eaab645DA10E79c5Bae1C38d884B4D1a68f113
Mock XAUT: 0x38Ca34c6B7b3772B44212d6c2597Fd91a6f944D0 (6 decimals)
Mock PAXG: 0x754A7D020D559EDD60848450c563303262cAdec7 (18 decimals)
First deposit: 0.05 oz XAUT, depositId #0, 90-day lock — mock tokens, not mainnet XAUT/PAXG

Property	Value
Mainnet tokens	XAUT (0x68749665FF8D2d112Fa859AA293F07A622782F38, 6 decimals) · PAXG (0x45804880De22913dAFE09f4980848ECE6EcbAf78, 18 decimals)
Min lock duration	28 days (MIN_LOCK_DURATION)
Max lock duration	366 days (MAX_LOCK_DURATION)
Min deposit XAUT	1,000 units = 0.001 oz (XAUT_MIN_AMOUNT)
Min deposit PAXG	1e15 units = 0.001 oz (PAXG_MIN_AMOUNT)
Withdrawal	ONLY original depositor, ONLY after unlock time
Reentrancy	nonReentrant on deposit() and withdraw()

SECURITY GUARANTEES: No admin key. No upgrade proxy (no UUPS, no transparent proxy, no beacon). No pause function. No emergency withdrawal. No extension or modification of existing deposits. No selective enforcement. Constitutional and immutable.

Contract EventsINDEXED

event GoldDeposited(uint256 indexed depositId, address indexed depositor, address indexed token, uint256 amount, uint256 unlockTime);
event GoldWithdrawn(uint256 indexed depositId, address indexed depositor, address token, uint256 amount);

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Gold Vault Governance

Activation: Gold Vault governance is DEFERRED (INT64_MAX) (GV_GOVERNANCE_ACTIVATION); it was NOT activated at #25,000. The vault is no longer funded since V15 (#25,000).

Spending Rules (GV1–GV4)CONSENSUS-ENFORCED

Rule	Type	Vote Required	Condition
GV1	Gold Purchase	No	TX contains GV_PAYLOAD_GOLD_PURCHASE marker (0x47). Direct gold acquisition for vault backing.
GV2	Small Operational	No	≤ 10% of monthly vault balance (GV_MONTHLY_LIMIT_PCT). Within 4,320-block window (GV_MONTHLY_WINDOW ~30 days). Fresh window if expired.
GV3	Large / Non-standard	Yes — miner vote	DEFERRED (INT64_MAX) — not live. As designed: Epoch 0–1: 95% threshold. Epoch 2+: 95% threshold. Voting window: 288 blocks (~48h). No activation height is set; these thresholds are not in effect.
GV4	Rejected	—	Spend doesn't match any rule → returned to vault automatically.

Governance Principles (GV1–GV4 Constitutional)IMMUTABLE

GV1 — Accumulation + Listing Reserve	Gold Vault SOST funds gold (physical or tokenized XAUT/PAXG); the Foundation reserves the right to allocate up to 50% exclusively for future CEX-listing liquidity
GV2 — Transparent Accounting	Every TX must include on-chain memo (weight, purity, custodian, or token contract)
GV3 — Multi-Signature	Gold Vault disbursements require multi-sig; no single key
GV4 — Quarterly PoR	Protocol publishes quarterly proof-of-reserves linking balances to gold holdings

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Constitutional Addresses

Coinbase Split by height (50/25/25 to #24,999; 50/50 miner/DTD since #25,000)HARDCODED AT GENESIS

Recipient	Share	Address	Verify
Miner	50%	(block finder address)	—
Gold Vault	25%	sost11a9c6fe1de076fc31c8e74ee084f8e5025d2bb4d	Explorer
PoPC Pool	25%	sost1d876c5b8580ca8d2818ab0fed393df9cb1c3a30f	Explorer

This split applies to every block reward AND every transaction fee. Any block that does not include the correct 50/25/25 split (blocks 0–24,999; 50/50 miner/DTD since #25,000) to the correct addresses is invalid and rejected by every node on the network. The split is hardcoded at genesis and cannot be modified by any mechanism.

Ethereum Protocol WalletGOLD RESERVE

Address	0xd38955822b88867CD010946F0Ba25680B9DfC7a6
Holds	XAUT + PAXG tokenized gold (live balance shown in stats above)
Purpose	Gold reserve backing for SOST. Publicly verifiable on Etherscan.

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Contract Registry

Model A / B Contracts (historical)NEVER DEPLOYED

ID	Model	Asset	Amount	Duration	Start	End	Status	ETH Address
FOUND-001	A	XAUT	0.5 oz	3 months	TBD	TBD	NEVER DEPLOYED	superseded — single SOST bond
FOUND-002	B	PAXG	0.5 oz	3 months	TBD	TBD	NEVER DEPLOYED	superseded — single SOST bond

Completed ContractsVERIFIED

No completed contracts yet.

Slashed ContractsAUTOMATIC

No slashed contracts.

Activation: The single native SOST bond’s V15 / #25,000 activation height (BOND_ACTIVATION_HEIGHT_MAINNET) is now past; the bond model is paused / superseded by DTD and retained as legacy / reference. Bonds are created, monitored and claimed on the SOST chain and are not tradeable in the current release (V30000). The Model A / Model B columns above reflect the historical / superseded design.

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Independent Verification

How to Verify Any PoPC ContractTRUSTLESS

Single native SOST bond	SOST bond locked on the SOST chain (verify via Explorer). The bond is the only collateral and the only slashable asset; create / monitor / claim on-chain. Activates V15 / block 25,000.
Model B — Escrow (historical)	Historical / superseded. The former design locked gold in an Ethereum SOSTEscrow contract; it is no longer part of the current PoPC model.
Audit results	All audit triggers, results, and slash events are deterministic from block entropy. Replay the audit_seed computation from any full node.
Registry	All contract IDs, addresses, transaction hashes, states, and history are published in this registry and verifiable on both chains.

Related documentation: PoPC Overview · PoPC Quick Start · SOST DEX & Settlement · E2E Protocol · Metals Reserve