Transaction Details
| TX Hash | b564aaeb876c4ca411ac8e58573486026677bb0d555ee6d98030a24c692bc70d |
| Block | 116,311 |
| Timestamp | Wed, 06 May 2026 23:39:57 GMT (3d ago) |
| Confirmations | 2,828 |
| 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) | b9553ee26a45fd641a0504d89236982d8ae07299298bb0b8ef6e555289338577 |
| Pedersen Commitment (C) | 41754bfc8093b6aa5586601e88933222551f6f8fd6fad5821c71581f3e719e22 |
| View Tag | 16 |
| Asset | ✓ USDm |
| Amount | Encrypted (Pedersen + Bulletproofs+) |
| Output #1 | |
| One-Time Key (O) | bb6ed50b8dc7cf32e6a3a12c8d015d24bc9dfbdfb2d3f2dfcbf62193c6263e5a |
| Pedersen Commitment (C) | 95cad4e4b370b6166dc79fbb3378646f871f8ba2e4256713b6d6646d98480355 |
| View Tag | f6 |
| 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 | 27b9fda3540233c3368280f5d8d21e339fb4928f752a412c6a39f736241ae816 |
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) | fd333b1d4371c6205ac1def1c67f03d2b6b5be94c5966b954cf9f795c37b1782 |
| C̃ (Pseudo-output) | f762692545311c68beb4052253756459bfacfa97787a449cb3ff6fd220839bc3 |
| Pseudo-out (Balance) | 844513a41fa0e1f7ea9df4ca19e3f0dae8c30f47c11a0a9e3b7b8d6e6fc31a0e |
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)