Transaction Details
| TX Hash | 508eb04e44380f1e9fda45da94f91acb660d88f852430681bded352d72e32f21 |
| Block | 116,306 |
| Timestamp | Wed, 06 May 2026 23:18:26 GMT (3d ago) |
| Confirmations | 3,043 |
| 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) | 88dae8a238c082fa510835cbda79facf08425adf12b467491b0bd5400f73c59d |
| Pedersen Commitment (C) | 838a05139af786f46e46d948ed4d8d0acf23d3b4659c05c0a9b06eb414207eab |
| View Tag | ae |
| Asset | ✓ USDm |
| Amount | Encrypted (Pedersen + Bulletproofs+) |
| Output #1 | |
| One-Time Key (O) | b32240005f7830c544d8be848ab0cf8ec92504c8815f05ef4b31e143e7ad171f |
| Pedersen Commitment (C) | 9e779d126cee34b03f4a69c3ae5eab6972d957d876184262f7bcbd1072621f44 |
| View Tag | 4a |
| 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 | 2085a8f2e91e6681ae105db16c4db47526fcca67a7f11562167b136fa4b0488f |
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) | 1e96c81471858e0407a6474fef2f1dc662e7ca3532c01b2a6538310a30924943 |
| C̃ (Pseudo-output) | acfaa85f941ab8e08d7cb5ab61bdb6fb1c1cc3492a53a247a749f79fd7674614 |
| Pseudo-out (Balance) | cceec6a82817cd4916622aa6748ed9a33a0700b921f948dec2d5707e40c5324e |
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)