Transaction Details
| TX Hash | 740e003ddb1c2ce17ddb3b02fbf18b7abad6b1c0edb8f89ddfc897b2330b9580 |
| Block | 116,210 |
| Timestamp | Wed, 06 May 2026 18:31:42 GMT (3d ago) |
| Confirmations | 2,530 |
| Fee | 0.01908476 USDm |
| Size | N/A |
| Weight | N/A |
| Version | 9 |
Transaction Type
| Type | TRANSFER |
Inputs & Outputs
| Inputs | 1 |
| Outputs | 2 |
| Privacy Proof | FCMP++ (type 11 — Full-Chain Membership Proof over entire UTXO set; decoy rings are not used) |
Outputs
| Output #0 | |
| One-Time Key (O) | 7386fb3e7d4e6d2f0b1052cca28e5d697a3eecdd5db2c0a5e2b3ea57bf21fd14 |
| Pedersen Commitment (C) | 796bf9a9c4278a7525339a1473dee09575fc01f4a58739ae30d01b462346ecbd |
| View Tag | 70 |
| Asset | ✓ USDm |
| Amount | Encrypted (Pedersen + Bulletproofs+) |
| Output #1 | |
| One-Time Key (O) | 03c539011020ccbe57bc3158c0413a7896fbb6c755810dee178e80ba8d15568e |
| Pedersen Commitment (C) | b7e9bbba9829d37b626578565f60c226a51763d2f8ff939b3b43c5856f1812af |
| View Tag | c2 |
| Asset | ✓ USDm |
| Amount | Encrypted (Pedersen + Bulletproofs+) |
Note: Actual amounts and sender/recipient addresses are private (FCMP++). Only the transaction structure is visible on-chain.
FCMP++ Proof Transcript
| Proof Type | FCMP++ Full-Chain Membership Proof |
| Anonymity Set | Entire Chain (all outputs ever created) |
| Inputs | 1 |
| Proof Size | 4,544 bytes |
| Curve Tree | Helios (C2) dual-curve architecture |
| Tree Layers | 4 |
| Tree Root | 580c359a661103eb12624b93f80cd090f9723397955d047b366f5740c1dfe153 |
Curve Tree Structure
Layer 0 (Leaves) : Ed25519 output tuples (O, I, C) → Selene (C1) hashes Layer 1 (Interior) : Selene (C1) → Helios (C2) commitments Layer 2 (Interior) : Helios (C2) → Selene (C1) commitments Layer 4 (Root) : Helios (C2) tree root
The full output set is committed into a Helios/Selene curve tree. Each leaf encodes an output tuple (O, I, C) as Selene curve points. Interior nodes alternate between Helios and Selene curves, enabling efficient recursive proof composition.
Input 0 — Membership Proof
| Key Image (Nullifier) | 0de095df85a99b02ada79ea7748ca3259264130421be26347d3a580bd76ba6e7 |
| C̃ (Pseudo-output) | 3fbf830007a4338a83a2f878bc4a4c0067c93ff59fa038438b4a24d5f3846c6b |
| Pseudo-out (Balance) | e04618c2e24d8de39af4bc2ff68d736da202860fa054dd895cbcfcabc0e0c8cc |
Nullifier: The key image
KI = x · Hp(O) is a deterministic, unlinkable nullifier. It prevents double-spending without revealing which output is being spent.
Spend-Auth & Linkability (SAL) Proof
ÕRerandomized one-time key
ĨRerandomized linking tag
RRerandomization scalar
C̃Rerandomized Pedersen commitment
The SAL proof demonstrates knowledge of the secret spend key, correct key image formation, and that the balance equation holds: Σ pseudo-outs = Σ output commitments + fee.
Verification Pipeline
1Deserialize FCMP++ proof from transaction
2Extract tree root (Helios (C2)), layers, key images
3Reconstruct signable hash from tx prefix
4Verify Generalized Bulletproofs+ arithmetic circuit
5Verify Helios/Selene curve tree membership (per input)
6Verify SAL proof (spend authorization + linkability)
7Check key image uniqueness (double-spend prevention)
✓Consensus acceptance
Privacy Guarantees
Anonymity SetEntire chain
Sender PrivacyHidden among all outputs
Amount PrivacyPedersen + Bulletproofs+
Receiver PrivacyStealth addresses
Double-SpendDeterministic nullifiers
Curve CycleHelios (C2) ↔ Selene (C1)