Verity One Ltd.

Nutrient Credit Certification Program

Nutrient Credit Certificate

NC-2026-CB-00142

Certificate Holder Chesapeake Restoration Co.

Restoration Site Chesapeake Bay - Site CB-07

Issue Date January 15, 2026

Expiration Date July 15, 2027 (18 months)

Credit Type Nitrogen Removal Credit (NRC)

Credit Amount 1.0 kg Nitrogen Removed

Oyster Count 10,000 Oysters (1 Bundle)

Species Crassostrea virginica (Eastern)

0.198 lbs

Nitrogen Removed

0.022 lbs

Phosphorus Removed

500K gal

Water Filtered/Day

Blockchain TX: 0x7a2f...8c4d | Polygon | Block #52,847,291

IPFS: QmX7...9kF2 | Timestamp: 2026-01-15T14:32:18Z (RFC 3161)

Unique identifier: NC-[Year]-[Region]-[Sequence]. Used for tracking and verification across the platform.

GPS-verified location where oysters are deployed. Links to IoT monitoring data and satellite imagery.

NC certificates expire 18 months from sale date. Must be retired or traded before expiration.

Type of nutrient removal: Nitrogen (NRC), Phosphorus (PRC), Carbon (CRC), or Combined.

Scan to access real-time verification, blockchain proof, and IoT sensor data from the restoration site.

Immutable record on Polygon blockchain. Includes IPFS storage hash and RFC 3161 trusted timestamp.