SGCN-96
Serialized Global Coupon Number (96-bit)
urn:epc:id:sgcnWhat is SGCN-96?
Encodes a GS1 Global Coupon Number with a serial component, enabling unique identification of individual coupons for redemption tracking and fraud prevention.
Used for: Digital and physical coupon tracking, promotional campaign management, coupon fraud prevention.
Field layout
The first 8 bits are always the header (0x3F = 63 decimal), which identifies this as SGCN-96. The partition field determines how bits are divided between the company prefix and the following reference field - see the partition table below.
Defined in GS1 EPC Tag Data Standard v2.3, Section 7.12 (Serialised Global Coupon Number), encoding procedure in Section 14.6.10.
| Bits | Field | Description |
|---|---|---|
0–7 | Header | 0x3F (63) - identifies this encoding as SGCN-96 |
8–10 | Filter | Currently only value 0 is defined. |
11–13 | Partition | Splits bits between company prefix and coupon reference. |
14–53 | Company Prefix | GS1 Company Prefix of the coupon issuer. |
54–54 | Coupon Reference | Coupon reference. Size varies by partition. |
55–95 | Serial Component | 41-bit serial component. Uniquely identifies this individual coupon. |
Filter values
The 3-bit filter field does not affect identity - it tells readers what packaging level or category the tag is applied to. The same item with different filter values has the same Pure Identity URI.
Source: GS1 EPC TDS v2.3, Table 10-9.
| Value | Name | Description |
|---|---|---|
0 | All others | Unspecified coupon |
1 | Reserved | Not yet assigned |
2 | Reserved | Not yet assigned |
3 | Reserved | Not yet assigned |
4 | Reserved | Not yet assigned |
5 | Reserved | Not yet assigned |
6 | Reserved | Not yet assigned |
7 | Reserved | Not yet assigned |
Partition table
The 3-bit partition value determines how the fixed bit space is divided between the company prefix and the following reference field. GS1 company prefixes vary in length (6–12 digits), so the partition tells the decoder where one field ends and the next begins.
Source: GS1 EPC TDS v2.3, Table 14-39.
| Partition | Prefix bits | Prefix digits | Ref bits | Ref digits |
|---|---|---|---|---|
0 | 40 | 12 | 1 | 0 |
1 | 37 | 11 | 4 | 1 |
2 | 34 | 10 | 7 | 2 |
3 | 30 | 9 | 11 | 3 |
4 | 27 | 8 | 14 | 4 |
5 | 24 | 7 | 17 | 5 |
6 | 20 | 6 | 21 | 6 |
Source
GS1 EPC Tag Data Standard, Release 2.3, Ratified October 2025 - see Section 7.12 (Serialised Global Coupon Number) and Section 14.6.10 for the encoding procedure. Read the EPC encoding guide for a full worked example of decoding hex to URI.