Transaction Details
| TX Hash | 37a3a313f964f609f682da89d74338e75ae6273a0950a2720957b1f45585607e |
| Block | 115,649 |
| Timestamp | Wed, 06 May 2026 05:55:25 GMT (2d ago) |
| Confirmations | 2,150 |
| 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) | 0116dd6363807ce0444423fad1793d32ff309921eee42567ef18fd8ecbe2d09a |
| Pedersen Commitment (C) | 49868b157f8f642881ce7092567dce3c373a8b257b501d03b9d171dc0d16ddc8 |
| View Tag | de |
| Asset | ✓ USDm |
| Amount | Encrypted (Pedersen + Bulletproofs+) |
| Output #1 | |
| One-Time Key (O) | 5a4fbb6d9103703f98dae2f22c35aa3eaa39f8fa834b00be3f79220515609e15 |
| Pedersen Commitment (C) | c9aa304050d057df5de459496f54a992790e5d3754bbe34bf0f98e9743a14068 |
| View Tag | 06 |
| 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 | bb881536cfe37d06a78a927613b426ab9faaeaca862bb783cb6819256cdc7ee2 |
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) | 5c3e1de76307b1704aac7ef795b6974975a5af295adee6d09dd39cdbe3968ae9 |
| C̃ (Pseudo-output) | bcf72eb2a5943ab6cfa22965c262f0658f53100caa157c0a1aff82063ba8d0e1 |
| Pseudo-out (Balance) | cc9990b977907559e0435e78af4c6e5350226eaed9ef153ba4d4b8300188b29c |
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)