Transaction Details
| TX Hash | a6a3439a31ca8d340a636fead90615630292dd50e9b9e9c72315213fe89b83cb |
| Block | 116,268 |
| Timestamp | Wed, 06 May 2026 21:03:49 GMT (3d ago) |
| Confirmations | 2,472 |
| 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) | 86b491730115ab663fde4dc87eda4c2d6408d38f3290d027be1ee1e0453ac38d |
| Pedersen Commitment (C) | 661f9af4db83948adc56ce2343148e2a25d71ae026d7da39ace698e6cebabe87 |
| View Tag | c3 |
| Asset | ✓ USDm |
| Amount | Encrypted (Pedersen + Bulletproofs+) |
| Output #1 | |
| One-Time Key (O) | 927645c0f04f2679a00ca2b9423cd7c9adddf282dbba091d4787af4fba827564 |
| Pedersen Commitment (C) | c06bf74b3b6d647cb86da37091ffe807f26792e4cc3d14e9df52f25b3107430b |
| View Tag | 04 |
| 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 | 06e6a70b6676306be33269a0b8c3e94538680926a19f44be596a3ae21957861b |
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) | 29dd06c7d4ec9a1429eb879bbf2a1910a842c74ba0b5dd5a9cb92a021c4b08c2 |
| C̃ (Pseudo-output) | 3ff3a5fa99f046abbe60ba2c4acd55527a5216e14fcb356130f564c51c487c64 |
| Pseudo-out (Balance) | 8f80dafec066d3b6b7f7ab660736a3d38cc19c08e16b55bbb5f78644bd30cc6d |
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)