Transaction Details
| TX Hash | 2155fb8dbf410c4423ff6945b8bcc80e70d722654489716540216ecd88af0d4e |
| Block | 116,207 |
| Timestamp | Wed, 06 May 2026 18:24:01 GMT (3d ago) |
| Confirmations | 2,680 |
| 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) | 5fec59b24579ac0190a9e58031373298fb8b85805344584c143c7f2d6d67d5eb |
| Pedersen Commitment (C) | 06e973b16f5b17795acf6a927bc681c0c93426f23697a52debfea43ddb063475 |
| View Tag | bd |
| Asset | ✓ USDm |
| Amount | Encrypted (Pedersen + Bulletproofs+) |
| Output #1 | |
| One-Time Key (O) | f17e52d50303d5b27a6bf31e3b4e018471043bdc2144ccb52c491fc185d4275d |
| Pedersen Commitment (C) | 7e575970ed12d60b553c8f52149f6db42651124615f819ccdd25b445f440d3db |
| View Tag | 88 |
| 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 | c10f0a5ee4dedb93fab933007b1aaf4f515aa0efece66395f5fe8f8d9ca86739 |
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) | d46d266b1953c087295b49b8a815fb0ac396d9adabc46f699291767be6098a56 |
| C̃ (Pseudo-output) | 95aac5f7ad98d8743a80d3abd4db3173277ec0369b9cb609bc23f53139827bfd |
| Pseudo-out (Balance) | c952dbcc87da16a26d4bfabdf5499e063ab835e2cf60da0fd47d6bed7e2f90ac |
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) | 47d95649bfe089de3b2bb9dc5a0d4f26cd20a8892b835808bc01c14f9dc58165 |
| C̃ (Pseudo-output) | 37cd3ec7a921cc7f055ab68364291ec62c21e2d481ec3bfdcd83441e1b29cb38 |
| Pseudo-out (Balance) | 90b665c934bad8f5cbd967b11511c51818e56e69f961d338ffe1ccd4cc55a8ea |
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)