Transaction Details
| TX Hash | 66e32f6b14bb6281b2cee753757618699cb18d0da30f0246073cef48aa420703 |
| Block | 116,324 |
| Timestamp | Thu, 07 May 2026 00:10:31 GMT (3d ago) |
| Confirmations | 2,521 |
| 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) | 9d21dc04d160c4751988d3448d0e6c3144c1bac8d23771e4686239e3cbc2ed6d |
| Pedersen Commitment (C) | 770086bf987adfb8bdedb80c3148abc0afe0403dd3b9653852b4301541f91ed1 |
| View Tag | 30 |
| Asset | ✓ USDm |
| Amount | Encrypted (Pedersen + Bulletproofs+) |
| Output #1 | |
| One-Time Key (O) | 1dac2d8d0865e0c2152c7e1038434b40d80d9506b1864e7c13fe13f845062e81 |
| Pedersen Commitment (C) | f7a636c6dfca383e789cae14b88dcea7c06358864a181eedc0eddd7a03b47714 |
| View Tag | a9 |
| 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 | e7a1a6ac82188b747b87bee41425fd151962a5bfbd8443f7973a0472609d7950 |
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) | d050a01a108217e0339e178332ac143374f6df6ea62657f88fb95b0e8de47173 |
| C̃ (Pseudo-output) | 6d154503e163cdf292a50ac7c7c351a961b795b9de8a0b82eb778c80da3b73db |
| Pseudo-out (Balance) | c190c2dfc2dc9060ee7f3cc5f4519915bd95cf2ec38fe04d164cdc9f20ad3f55 |
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)