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Credit retirement

Credit Retirement Receipt

Proof of credits removed from circulation.

Credit Retirement Receipt collection artwork

Each receipt records the type and quantity of credits retired, the beneficiary and the source certificates. Those credits cannot be sold or used again.

This contract issues receipts when credits are permanently removed from circulation.

Retirement details.

The quantity removed from circulation, who it was retired for and where the credits came from.

Credits
The type and quantity of credits retired.
Beneficiary
The identifier of the party the retirement is claimed for, which may differ from the credit holder.
Date
When the retirement was recorded on the network.
Certificates
The certificates backing the credits, with links to their source MassIDs.

The credit holder and beneficiary are distinct fields. The receipt records the holder’s account and the beneficiary’s identifier.

From the source credits to the receipts.

Certificates link credits to their source batches. Each receipt records an operation: purchase or retirement.

View the contract.

The address identifies the contract for this family. Each record it issues has its own number.

Network
Polygon · 137
Symbol
RETIREMENT-RECEIPT

Contract address

0xc03e32E6BA96844fc2C529e6256f0B34CF50bE21
Open on PolygonScan opens in a new tab

View transactions and issued records.

Standard, custody and metadata
Standard
ERC-721 · non-transferable records
Custody
Issued records are held by the Vault contract.
Issuance
Issued when credits are permanently removed from circulation, at purchase or in a later operation.
Family metadata
ipfs://Qmenqgi3iDGbpAQypB3RkHrd3gHjCsVzK6DVx3She6WXej/retirement-receipt.v1.jsonOpen in Metadata Viewer opens in a new tab
Can retirement happen after purchase?

The protocol also supports retiring credits in a separate, authorized operation. That technical capability differs from Carrot’s current purchase flow, which retires credits automatically in the same transaction.

Explore both retirement flows opens in a new tab
Can retirement be reversed?

No. Retired credits are destroyed and cannot return to circulation. The receipt keeps the references to the quantity, beneficiary and certificates involved.