Transaction Details
| TX Hash | 210d35a37e5a4e33c8a4a9e939ba652531515d0cc0d2b744cba2ba28cdd2a545 |
| Block | 116,204 |
| Timestamp | Wed, 06 May 2026 18:15:55 GMT (3d ago) |
| Confirmations | 2,817 |
| Fee | 0.0246826 USDm |
| Size | N/A |
| Weight | N/A |
| Version | 9 |
Transaction Type
| Type | TRANSFER |
Inputs & Outputs
| Inputs | 2 |
| 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) | d9c0f6db9c6a8a4601cb83c32293da1f14e1e0a4310224f1eee0fc32cf229f69 |
| Pedersen Commitment (C) | f7803cf6d6bbd089f4dd5b9aa4204854f380dc28763d1fe73149cfc1302a9f68 |
| View Tag | e2 |
| Asset | ✓ USDm |
| Amount | Encrypted (Pedersen + Bulletproofs+) |
| Output #1 | |
| One-Time Key (O) | 780706846fbadde35982ea190e6b5a04c51dde9813059423fea801ddbd7b74e9 |
| Pedersen Commitment (C) | 72d0e3565513e774ed0be71c1297863a4b70800e84d3a0c68ab1d4c94a11c25c |
| View Tag | dc |
| 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 | 2 |
| Proof Size | 6,080 bytes |
| Curve Tree | Helios (C2) dual-curve architecture |
| Tree Layers | 4 |
| Tree Root | 8ff0321dab5306c5f11db032d269a55d79fd2c2dd2627fe6465bf89e75bd9b84 |
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) | feb7e5b353221e9b82d4353b722a51137acf31588fc6252c654db54e9064823d |
| C̃ (Pseudo-output) | 4f0cb20d441e7b62852fd754810dd8df3b7a93d450e378f653d8c3f18b805eca |
| Pseudo-out (Balance) | 8aab34a7da6e926b057a8a9662a997ac37ad484a0cb4e9393fb9e391537b7264 |
Nullifier: The key image
KI = x · Hp(O) is a deterministic, unlinkable nullifier. It prevents double-spending without revealing which output is being spent.
Input 1 — Membership Proof
| Key Image (Nullifier) | 749a4b28ba80b8ac883f30f2ce3541bc41d9a91e5d436a2e359932179589f99a |
| C̃ (Pseudo-output) | b7014e1f6be4a9d3cd9fa41815292db9f6ba2df88311cdae4277b9b8b97532bd |
| Pseudo-out (Balance) | 176fd15354487940fabd8e28d0252383a6b7e6f1501d835fd61b46ec9fba36fa |
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)