wPRL overview

wPRL (“wrapped PRL”) is the Solana Token-2022 representation of native PRL. Every wPRL in circulation is backed 1:1 by PRL held in Pearl reserves under the Nacre validator quorum.

At a glance

Property	Value
Name	`Wrapped Pearl` (Token-2022 `TokenMetadata` extension, embedded on the mint)
Symbol	`wPRL`
Decimals	`8` (matches PRL satoshis)
Token program	SPL Token-2022
Mint authority	`nacre_two_way_peg` PDA (seed `b"mint_authority"`)
Freeze authority	None — wPRL is never frozen
Metadata update authority	Admin multisig (3-of-5)
Withdrawal escrow	Program-owned vault ATA owned by `nacre_two_way_peg`
Transfer fee	Token-2022 `TransferFeeConfig` extension, capped on-chain at 100 bps; current rate 0 bps
Supply model	Mint-on-deposit, escrow-then-burn-on-redemption

wPRL is a Token-2022 mint. The protocol may configure a transfer fee via the on-chain set_transfer_fee instruction, which enforces a hard cap of 100 basis points (MAX_TRANSFER_FEE_BPS). The current rate is 0 bps, but Token-2022-aware wallets and integrators must still handle the TransferFeeConfig extension correctly in case the rate is raised in the future. Bridge fees (mint / burn) are separate and described below.

Contract addresses

Mainnet
Testnet (Pearl signet ↔ Solana devnet)

Contract	Address
`wPRL` SPL mint	`TBD`
`nacre_two_way_peg` program	`TBD`
`nacre_liquidity_management` program	`TBD`
`nacre_layer_ca` program	`TBD`
`nacre_layer_fee_management` program	`TBD`
`nacre_protocol_config` program	`TBD`
Admin multisig (3-of-5)	`TBD`
Protocol treasury	`TBD`

Contract	Address
`wPRL` SPL mint	`TBD`
`nacre_two_way_peg` program	`TBD`
`nacre_liquidity_management` program	`TBD`
`nacre_layer_ca` program	`TBD`
`nacre_layer_fee_management` program	`TBD`
`nacre_protocol_config` program	`TBD`
Admin multisig (3-of-5)	`TBD`
Protocol treasury	`TBD`

Fees

Nacre charges fees only at the bridge boundary. There are three components on both mint (deposit) and burn (withdrawal):

Component	What it is	Who keeps it
Miner fee	Pearl network fee for the sweep / redemption transaction	Pearl miners (passthrough)
Validator margin	Fixed satoshi amount per validator attestation	Validators (distributed monthly)
Protocol fee	Basis-point fee on the amount crossing the bridge	Protocol treasury

The math the on-chain program enforces:

user_net = amount − miner_fee − validator_margin − protocol_fee
protocol_fee = amount × protocol_fee_bps / 10_000

Current parameters

All fee parameters are set in the on-chain ProtocolConfig account and can be adjusted by the admin multisig (subject to timelock).

Parameter	Mint (deposit)	Burn (withdraw)
`protocol_fee_bps`	`TBD` bps	`TBD` bps
`validator_margin_sats_per_attestation`	`TBD` sats	`TBD` sats
Miner fee	dynamic (Pearl mempool)	dynamic (Pearl mempool)

Token functionality

Because wPRL is a Token-2022 mint, it supports the standard Token-2022 operations out of the box (subject to the active TransferFeeConfig):

Transfer — send wPRL to any Solana address. If the protocol has set a non-zero transfer fee, Token-2022 withholds the configured percentage on each user-to-user transfer (currently 0 bps).
Approve / delegate — grant another account the right to spend on your behalf (e.g. for DEX routing).
Associated Token Accounts — wallets create ATAs automatically.
Burn — anyone can burn their own wPRL, but burning outside the withdrawal flow does not release PRL on Pearl. Always redeem via the Nacre app or by calling request_withdrawal on nacre_two_way_peg (which escrows your wPRL into the bridge’s pending withdrawal vault before it is burned on Pearl confirmation). Note that a direct Burn on a Token-2022 mint with a non-zero transfer fee can also withhold the configured fee.

Do not send wPRL to centralized exchanges or contracts that do not explicitly support wPRL — they may not credit your deposit, and if they burn the token outside the Nacre flow, the underlying PRL becomes permanently unredeemable.

Get started

wPRL

At a glance

Contract addresses

Fees

Current parameters

Token functionality

Where to go next

Mint wPRL

Burn wPRL

​At a glance

​Contract addresses

​Fees

​Current parameters

​Token functionality

​Where to go next

Mint wPRL

Burn wPRL

At a glance

Contract addresses

Fees

Current parameters

Token functionality

Where to go next