Transaction Details
| TX Hash | 740465c397cf6d4ec0eff3bd9ea5d2898727c85c8e2cb9f05f886e1fde610ab6 |
| Block | 115,275 |
| Timestamp | Tue, 05 May 2026 23:13:01 GMT (1d ago) |
| Confirmations | 1,397 |
| 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) | 6ddb9f59eec9ec073c624cc4e6c89b99d83dd214b9cb79179042f45e817cfec8 |
| Pedersen Commitment (C) | b997cb1afb4e893be144237f108237d6dcef3694555c0c81c319ab4710301478 |
| View Tag | ea |
| Asset | ✓ USDm |
| Amount | Encrypted (Pedersen + Bulletproofs+) |
| Output #1 | |
| One-Time Key (O) | eda46364d3f237509657c1903c08f558c1476c810562a31913774192467b348c |
| Pedersen Commitment (C) | 47e5ffecc3af34a9752fd84a80df44e457b2026af184bffda499e47565c119b6 |
| View Tag | 3a |
| 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 | 1b4152516aad9eb1fe1e7c219c943722ec2688b161c88306a5fc2eb4f7f5f778 |
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) | 037564594faba33bae346022caab2f6fb60e04e98ecf393994979c7e17673adb |
| C̃ (Pseudo-output) | 43a81bd88447578087ed7b944fc7ad39e58e1afc78b943735d1561ffd178dc7b |
| Pseudo-out (Balance) | c7bd329f6dd0938c2660324fc1775c368e84bad9cb8eec09f438d62edb317715 |
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)