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	SHA-256 (witness v1)
Privacy	None	SoquObscura (in development)
Batch Verification	None	PAT (LatticeFold+ deprecated, see its page)
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 (unfundable)	PAT commitment check; retained in the engine but non-load-bearing. PAT is verified as a block-level attestation, not through this opcode (see PAT)
OP_CHECKFOLDPROOF	0xfc	v3	LatticeFold+ batch proof (deprecated; the deployment does not activate on any network)
OP_LATTICEBP_RANGEPROOF	0xfa	v4	Confidential-tx range proof (reserved, research)
OP_USDSOQ_*	0xf4-0xf7	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 Attestation: A coinbase output committing SHA3-256 of the block's 100-byte batch proof over all Dilithium spends. Optional to emit, verified by every node when present, and scheduled to become mandatory at a consensus-set height

Network Parameters

Parameter	Stagenet (current)	Mainnet (at launch)	Regtest
P2P Port	28333	33388	18444
RPC Port	28332	33389	18332
Address Prefix	ssq1p	sq1p	sq1p
Target Spacing	60 seconds	60 seconds	1 second

Soft Fork Activation

Feature	Status
PAT block attestation	Active from genesis (verified coinbase commitment); witness v2 outputs are permanently unfundable
USDSOQ (v5)	Active on stagenet and regtest; not active on mainnet (pending Halborn Phase 2 audit)
Confidential tx (v4)	Research, not active (superseded by SoquObscura)
LatticeFold+ (v3)	Deprecated; the deployment does not activate on any network. Successor: SoquObscura (research, not scheduled)

Source Code

Soqucoin is fully open source: github.com/soqucoin/soqucoin