1{
2  "$schema": "https://schemas.dsafe.us/StandardDefinition/1.0",
3  "id": "issn",
4  "version": "1.0",
5  "label": "International Standard Serial Number",
6  "description": "A unique eight-digit number identifying a serial publication.",
7  "governingBody": "ISSN International Centre",
8  "isoReference": "ISO 3297:2007",
9  "revisionCycle": "irregular",
10  "status": "active",
11  "props": [
12    {
13      "name": "issn",
14      "type": "string",
15      "nullable": true,
16      "normalize": "hyphenated-8",
17      "display": "hyphenated-8",
18      "checkDigit": { "algorithm": "iso7064-mod11-2", "position": "last" },
19      "pattern": "^[0-9]{4}-[0-9]{3}[0-9X]$",
20      "description": "ISSN identifying this serial publication."
21    }
22  ],
23  "pk": "issn",
24  "uriScheme": "ISSN:{{issn}}",
25  "linkedDataUri": "https://portal.issn.org/resource/ISSN/{{issn}}",
26  "externalApis": [
27    {
28      "id": "issn-portal",
29      "name": "ISSN Portal",
30      "kind": "lookup",
31      "rateLimit": null,
32      "fieldMapping": [
33        { "source": "title",   "target": "title",   "overwrite": "if-empty" },
34        { "source": "medium",  "target": "medium",  "overwrite": "if-empty" },
35        { "source": "country", "target": "country", "overwrite": "if-empty" }
36      ]
37    }
38  ]
39}
40