Protocol Specification¶

Soqucoin is derived from Dogecoin Core 1.14.x with fundamental cryptographic upgrades. The consensus rules maintain Scrypt PoW compatibility with existing ASIC hardware while replacing all signature and privacy primitives with quantum-resistant alternatives.

Key Differences from Dogecoin¶

Component	Dogecoin	Soqucoin
Signatures	ECDSA (secp256k1)	ML-DSA-44 (FIPS 204)
Address Format	Base58Check	Bech32m
Address Hashing	SHA-256 + RIPEMD-160	BLAKE2b-160
Privacy	None	Lattice-BP++ (opt-in)
Batch Verification	None	PAT + LatticeFold+
Stablecoin	None	USDSOQ (native L1)
Merge Mining	AuxPoW (parent: LTC)	AuxPoW (parent: LTC)
Block Time	60 seconds	60 seconds

Consensus Opcodes¶

Soqucoin extends the script engine with four custom opcodes for post-quantum operations:

Opcode	Hex	Witness Version	Purpose
`OP_CHECKPATAGG`	`0xfd`	v2	PAT Merkle commitment verification
`OP_CHECKFOLDPROOF`	`0xfc`	v3	LatticeFold+ batch proof verification
`OP_LATTICEBP_RANGEPROOF`	`0xfa`	v4	Lattice-BP++ range proof verification
`OP_USDSOQ_*`	`0xf6-0xf9`	v5	USDSOQ authority operations

All opcodes are dispatched through VerifyScript() → EvalScript() with full witness version routing.

Transaction Format¶

Soqucoin uses SegWit (Segregated Witness) for all transactions. The witness data carries Dilithium signatures instead of ECDSA:

Version | Flag (0001) | Inputs | Outputs | Witness | Locktime
                                            │
                              ┌──────────────┘
                              ├── Dilithium Signature (2,420 bytes)
                              └── Public Key (1,312 bytes)

Block Structure¶

Standard Bitcoin/Dogecoin block structure with two additions:

AuxPoW Header: For merge-mined blocks from parent chain (LTC/DOGE)
PAT Proof: Optional 100-byte aggregated signature proof per block

Network Parameters¶

Parameter	Stagenet	Regtest
P2P Port	44556	18444
RPC Port	44555	18332
Address Prefix	`ssq1`	`soqrt1`
Magic Bytes	`0xfcc1b7dc`	`0xfabfb5da`
Target Spacing	60 seconds	60 seconds

Soft Fork Activation¶

Feature	Activation Method	Status
LatticeFold+ (v3)	`ALWAYS_ACTIVE`	Active from genesis
Lattice-BP++ (v4)	BIP9	Active on regtest, pending audit for mainnet
USDSOQ (v5)	BIP9	Active on regtest, pending audit for mainnet
PAT (v2)	`ALWAYS_ACTIVE`	Active from genesis

Source Code¶

Component	Location
Consensus rules	`src/validation.cpp`
Script engine	`src/script/interpreter.cpp`
Dilithium crypto	`src/crypto/dilithium/`
PAT aggregation	`src/crypto/pat/`
LatticeFold+ verifier	`src/crypto/latticefold/`
Lattice-BP++	`src/crypto/latticebp/`
PQ Wallet	`src/wallet/pqwallet/`

Full source: github.com/soqucoin/soqucoin