Transaction Details
| TX Hash | f6c5d8508f02181233813ebd9605121887c084e18336229948ce9f19f8612da3 |
| Block | 113,855 |
| Timestamp | Mon, 04 May 2026 23:49:48 GMT (5h ago) |
| Confirmations | 351 |
| 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) | a67c2c662eef6e2473dc5dcb6f15fa258cc276fb59870a100fe9cd32ce44d59d |
| Pedersen Commitment (C) | a144f2ee4f3fbe6aaad183b463a896b5afd2077b927e0b83a9d277e79d92d179 |
| View Tag | b6 |
| Asset | ✓ USDm |
| Amount | Encrypted (Pedersen + Bulletproofs+) |
| Output #1 | |
| One-Time Key (O) | 6193152350675f2fab48cd1a575141aa745ca2bd9314682ee653cb4aa8dda12b |
| Pedersen Commitment (C) | bf2dae018dd67b0756e4c5b5362aeab8316a724624a296b095633a3bd994e919 |
| View Tag | 53 |
| 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 | b75f54ee5e4428e75d7a6b7b93a8030a1fd03994c8be7096980f49b0a4138539 |
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) | b6c21e9afa80ba0ee68488e1338c843b6bb20d63289ffea8931dabfac10494c6 |
| C̃ (Pseudo-output) | c1529faa9b3f38fc079690d869a975c67a4ba8fd0117dbb6a8190a518b7785f2 |
| Pseudo-out (Balance) | 3721a1411dc448fb95cbb946d41e3b5e5448a74f0665c484674942173238e0d9 |
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)