Transaction Details
| TX Hash | 90cdc38643a718b41166817aa1918dd8447c262243db6815af4be0a99805f7a2 |
| Block | 116,228 |
| Timestamp | Wed, 06 May 2026 19:17:06 GMT (3d ago) |
| Confirmations | 2,383 |
| 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) | 047416c11aa9727dacf1e3fe555d26ab80675c6c51490c62644bd4b5cd75accd |
| Pedersen Commitment (C) | 918a6b139a21a4c646a1665c1e87d57f300b29cb34bbca1f30fc731a5130bd1c |
| View Tag | 02 |
| Asset | ✓ USDm |
| Amount | Encrypted (Pedersen + Bulletproofs+) |
| Output #1 | |
| One-Time Key (O) | 6a80d52fe6c4be97e3291a7d429586863b1f5f0d3ec18c2872acf7a50d4747af |
| Pedersen Commitment (C) | 27f348908fb180591348b49a557ef0114e07df917b0a0a6b0da13a09d0983697 |
| View Tag | cb |
| 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 | 1193e9ab6f66369395243b560ab5cff89bd0280bdf4fec21ff1c9c41994953ff |
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) | fd9688d3ac9df7246df3959a0237a47fc06b26722750be176ddff4df33d2978f |
| C̃ (Pseudo-output) | 5451f1210e24a1ac5525c6caa7e4370e738a2e8d68958162fd1fab51bd5a1459 |
| Pseudo-out (Balance) | bd5fd5ce541d55ea41e34571edc5600262d7d9ca86b57a9165c3fd6aa3038ddd |
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)