Transaction Details
| TX Hash | f6979f66905a9741f1c004456d89b6acfc1e364d6a9f10960def8e38ce174442 |
| Block | 106,875 |
| Timestamp | Thu, 30 Apr 2026 02:51:45 GMT (4d ago) |
| Confirmations | 6,728 |
| 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) | 7208992918d63e5637b0c101373af12c214a8db161e8aa4df68e8ebd03bf1397 |
| Pedersen Commitment (C) | a038311ab2adcbac7f7c34aae5ef17ff0a42d42a676ef7fadcec5e5db1907273 |
| View Tag | 49 |
| Asset | ✓ USDm |
| Amount | Encrypted (Pedersen + Bulletproofs+) |
| Output #1 | |
| One-Time Key (O) | 01354dce4d8f31c277f5f9207ef9addb90895fc2f0139db5600af7a010dc83d5 |
| Pedersen Commitment (C) | 7d7d7cd720e1d61e8a315678200612efc11858b0d664c10f7d2db3fbadf0aeaf |
| View Tag | bb |
| 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 | 5ccede2f43394a3765308d483f37e05cd92ca8651cfb44a14b678e05065c3b87 |
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) | b5119a1c2c56fae1b18b40e1fe89bf40a259c0e06a5053aa08362579fa709d75 |
| C̃ (Pseudo-output) | 4c3f6913c85a7d3d5c344416e0266f2037e7043ffb016732c9f09bfdb36e7777 |
| Pseudo-out (Balance) | 4a498d18aca0f7f00bc328b70801313176ae1db90f8fd2139d1f556d3d81ab98 |
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) | 8f7547c5e917b697238523a085aeb5cb546575e4569fb46742bcc4c885d287c5 |
| C̃ (Pseudo-output) | 77aaaf2745b25c229c30d275a9209a3f6b9e223910873148e19056b6ee628741 |
| Pseudo-out (Balance) | 4729b0a71fcad345cd771d42ff17bf0ea00f0dd6700fcc1858eb088fc248c802 |
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)