Transaction Details
| TX Hash | 56bb13fbce265d1dc5231a048d3c4390dfa0f53bc11e37bd19fbd0fce050886d |
| Block | 115,633 |
| Timestamp | Wed, 06 May 2026 05:28:18 GMT (2d ago) |
| Confirmations | 1,856 |
| 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) | 8ed3b199d6ad42cfbc401b542de47769f77e26a979d5ac013fe37dcc49cbac15 |
| Pedersen Commitment (C) | 3932c8f512fa69bfddc47a062ba6c8fad2b38308e56c7186e9bc740b0d7c8f71 |
| View Tag | e5 |
| Asset | ✓ USDm |
| Amount | Encrypted (Pedersen + Bulletproofs+) |
| Output #1 | |
| One-Time Key (O) | 0638d2fd9d140a58f438262128ccf57b832c6199612dac94069c40a850fca6c0 |
| Pedersen Commitment (C) | 3c240a1a78feb196417c4bb1c301461c927645e9a7d548746eabbd7821e17474 |
| View Tag | c5 |
| 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 | 06052d1abc8f7f38f924a3288f88fe2beade5866ad12726e01d90de3eaff53da |
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) | 518e0d5942bff82e47971d559e1f02a1262457ca365c2d984f949db38bc7091a |
| C̃ (Pseudo-output) | d80743ea8a72d0b5b3ccf5071fefc5c19acfaee8598feb91126125d641fd5061 |
| Pseudo-out (Balance) | 951a7340db80e2ccaa4eb95a6405bbd56efa407b00fd2ab322302b4c80cdbdf7 |
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)