pyld-play

doc2merkle.ipynb

{
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   "cell_type": "code",
   "execution_count": 1,
   "id": "ee81ba5d-5f7e-4701-95df-13af154c2e1c",
   "metadata": {
    "tags": []
   },
   "outputs": [],
   "source": [
    "from pyld import jsonld\n",
    "import json"
   ]
  },
  {
   "cell_type": "code",
   "execution_count": 11,
   "id": "abc9bd93-7a7b-4dff-9248-a0db2cdefdf2",
   "metadata": {},
   "outputs": [],
   "source": [
    "doc = {\n",
    "  \"@context\": {\n",
    "    \"schema\": \"http://schema.org/\",\n",
    "    \"regen\": \"http://regen.network/\",\n",
    "    \"regen:additionalCertifications\": { \"@container\": \"@list\" }\n",
    "  },\n",
    "  \"@type\": \"regen:C01-CreditBatch\",\n",
    "  \"regen:vcsRetirementSerialNumber\": \"5531-243019420-243019439-VCU-048-MER-CD-14-934-01012015-31122015-1\",\n",
    "  \"regen:vcsProjectId\": 934,\n",
    "  \"regen:additionalCertifications\": [\n",
    "    {\n",
    "      \"schema:name\": \"CCB-Gold\",\n",
    "      \"schema:url\": {\n",
    "        \"@type\": \"schema:URL\",\n",
    "        \"@value\": \"https://verra.org/project/ccb-program/\"\n",
    "      }\n",
    "    }\n",
    "  ]\n",
    "}"
   ]
  },
  {
   "cell_type": "code",
   "execution_count": 12,
   "id": "b545ae5a-f6cd-4bd1-89a6-56ed59f86e0c",
   "metadata": {},
   "outputs": [],
   "source": [
    "normalized = jsonld.normalize(\n",
    "    doc, {'algorithm': 'URDNA2015', 'format': 'application/n-quads'})"
   ]
  },
  {
   "cell_type": "code",
   "execution_count": 16,
   "id": "b703693b-244a-4451-a70a-956d442664c6",
   "metadata": {},
   "outputs": [],
   "source": [
    "out = [x for x in normalized.split('\\n') if len(x)>0]"
   ]
  },
  {
   "cell_type": "code",
   "execution_count": 17,
   "id": "9e40de7a-023c-4040-a2c7-dfe9d92df8d1",
   "metadata": {},
   "outputs": [
    {
     "data": {
      "text/plain": [
       "['_:c14n0 <http://www.w3.org/1999/02/22-rdf-syntax-ns#first> _:c14n1 .',\n",
       " '_:c14n0 <http://www.w3.org/1999/02/22-rdf-syntax-ns#rest> <http://www.w3.org/1999/02/22-rdf-syntax-ns#nil> .',\n",
       " '_:c14n1 <http://schema.org/name> \"CCB-Gold\" .',\n",
       " '_:c14n1 <http://schema.org/url> \"https://verra.org/project/ccb-program/\"^^<http://schema.org/URL> .',\n",
       " '_:c14n2 <http://regen.network/additionalCertifications> _:c14n0 .',\n",
       " '_:c14n2 <http://regen.network/vcsProjectId> \"934\"^^<http://www.w3.org/2001/XMLSchema#integer> .',\n",
       " '_:c14n2 <http://regen.network/vcsRetirementSerialNumber> \"5531-243019420-243019439-VCU-048-MER-CD-14-934-01012015-31122015-1\" .',\n",
       " '_:c14n2 <http://www.w3.org/1999/02/22-rdf-syntax-ns#type> <http://regen.network/C01-CreditBatch> .']"
      ]
     },
     "execution_count": 17,
     "metadata": {},
     "output_type": "execute_result"
    }
   ],
   "source": [
    "out"
   ]
  },
  {
   "cell_type": "code",
   "execution_count": 18,
   "id": "05e84fdb-86de-412d-b7c7-390d4c2dfe0f",
   "metadata": {},
   "outputs": [],
   "source": [
    "from pymerkle import MerkleTree\n",
    "\n",
    "tree = MerkleTree()"
   ]
  },
  {
   "cell_type": "code",
   "execution_count": 19,
   "id": "882cc905-3262-4991-bea0-ce5260ab4162",
   "metadata": {},
   "outputs": [],
   "source": [
    "for data in out:\n",
    "    tree.encrypt(data)"
   ]
  },
  {
   "cell_type": "code",
   "execution_count": 20,
   "id": "d0c27b41-dc6b-4d89-83cc-7fc8397f8271",
   "metadata": {},
   "outputs": [
    {
     "data": {
      "text/plain": [
       "\n",
       "    uuid      : cdabcf2c-2a35-11ed-be93-c26700a3bae5\n",
       "\n",
       "    hash-type : SHA256\n",
       "    encoding  : UTF-8\n",
       "    security  : ACTIVATED\n",
       "\n",
       "    root-hash : 27d65b5e0a7f49c3508fce7bd2010961281795f0894924cb23e1f1d64b81d4f1\n",
       "\n",
       "    length    : 8\n",
       "    size      : 15\n",
       "    height    : 3"
      ]
     },
     "execution_count": 20,
     "metadata": {},
     "output_type": "execute_result"
    }
   ],
   "source": [
    "tree"
   ]
  },
  {
   "cell_type": "code",
   "execution_count": 24,
   "id": "17d078f6-18eb-4bf0-9931-92ceb1fb1920",
   "metadata": {},
   "outputs": [
    {
     "name": "stdout",
     "output_type": "stream",
     "text": [
      "b'0897a746b0fa6437bd5673b1893d9803799aa2e47fe152d8f97514d645d446fd'\n"
     ]
    },
    {
     "data": {
      "text/plain": [
       "True"
      ]
     },
     "execution_count": 24,
     "metadata": {},
     "output_type": "execute_result"
    }
   ],
   "source": [
    "from pymerkle.hashing import HashEngine\n",
    "challenge = HashEngine(**tree.get_config()).hash('_:c14n1 <http://schema.org/name> \"CCB-Gold\" .')\n",
    "print(challenge)\n",
    "proof = tree.generate_audit_proof(challenge)\n",
    "proof.verify()"
   ]
  },
  {
   "cell_type": "code",
   "execution_count": null,
   "id": "792d1fdb-1e6f-48a8-9e6d-78b1d371e8c0",
   "metadata": {},
   "outputs": [],
   "source": []
  }
 ],
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  "kernelspec": {
   "display_name": "Python 3 (ipykernel)",
   "language": "python",
   "name": "python3"
  },
  "language_info": {
   "codemirror_mode": {
    "name": "ipython",
    "version": 3
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   "file_extension": ".py",
   "mimetype": "text/x-python",
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   "nbconvert_exporter": "python",
   "pygments_lexer": "ipython3",
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 },
 "nbformat": 4,
 "nbformat_minor": 5
}

requirements.txt

PyLD==2.0.3
pymerkle==3.0.0

https://hub.gke2.mybinder.org/user/wgwz-185c62fc70-a44fdcf09110222-63fty8ii/lab/tree/doc2merkle.ipynb