{"bundle_type":"pith_open_graph_bundle","bundle_version":"1.0","pith_number":"pith:2017:CMRLBBBSLB23H6CIOL3UGMDA3S","short_pith_number":"pith:CMRLBBBS","canonical_record":{"source":{"id":"1708.07614","kind":"arxiv","version":4},"metadata":{"license":"http://arxiv.org/licenses/nonexclusive-distrib/1.0/","primary_cat":"astro-ph.CO","submitted_at":"2017-08-25T05:04:11Z","cross_cats_sorted":[],"title_canon_sha256":"2f47fb666ca570f6f7e9713796ad9a29f9666080149fcc379127c0e4b54789c5","abstract_canon_sha256":"4325358d26aafae743a20caeccef4e0ac2e1a31494f175c5f425e7b9678a003e"},"schema_version":"1.0"},"canonical_sha256":"1322b084325875b3f84872f7433060dc8feda3053a0ef0b8911644707d7620ec","source":{"kind":"arxiv","id":"1708.07614","version":4},"source_aliases":[{"alias_kind":"arxiv","alias_value":"1708.07614","created_at":"2026-05-18T00:10:32Z"},{"alias_kind":"arxiv_version","alias_value":"1708.07614v4","created_at":"2026-05-18T00:10:32Z"},{"alias_kind":"doi","alias_value":"10.48550/arxiv.1708.07614","created_at":"2026-05-18T00:10:32Z"},{"alias_kind":"pith_short_12","alias_value":"CMRLBBBSLB23","created_at":"2026-05-18T12:31:10Z"},{"alias_kind":"pith_short_16","alias_value":"CMRLBBBSLB23H6CI","created_at":"2026-05-18T12:31:10Z"},{"alias_kind":"pith_short_8","alias_value":"CMRLBBBS","created_at":"2026-05-18T12:31:10Z"}],"events":[{"event_type":"record_created","subject_pith_number":"pith:2017:CMRLBBBSLB23H6CIOL3UGMDA3S","target":"record","payload":{"canonical_record":{"source":{"id":"1708.07614","kind":"arxiv","version":4},"metadata":{"license":"http://arxiv.org/licenses/nonexclusive-distrib/1.0/","primary_cat":"astro-ph.CO","submitted_at":"2017-08-25T05:04:11Z","cross_cats_sorted":[],"title_canon_sha256":"2f47fb666ca570f6f7e9713796ad9a29f9666080149fcc379127c0e4b54789c5","abstract_canon_sha256":"4325358d26aafae743a20caeccef4e0ac2e1a31494f175c5f425e7b9678a003e"},"schema_version":"1.0"},"canonical_sha256":"1322b084325875b3f84872f7433060dc8feda3053a0ef0b8911644707d7620ec","receipt":{"kind":"pith_receipt","key_id":"pith-v1-2026-05","algorithm":"ed25519","signed_at":"2026-05-18T00:10:32.277001Z","signature_b64":"SIWTBcuskYZBCLG2vY74GxtqZPdziTa+9Naf9W/5z8XbxMd9meID6zkZ/LGhglC/8lHCKr4LAiGSLeLscmWsAQ==","signed_message":"canonical_sha256_bytes","builder_version":"pith-number-builder-2026-05-17-v1","receipt_version":"0.3","canonical_sha256":"1322b084325875b3f84872f7433060dc8feda3053a0ef0b8911644707d7620ec","last_reissued_at":"2026-05-18T00:10:32.276291Z","signature_status":"signed_v1","first_computed_at":"2026-05-18T00:10:32.276291Z","public_key_fingerprint":"8d4b5ee74e4693bcd1df2446408b0d54"},"source_kind":"arxiv","source_id":"1708.07614","source_version":4,"attestation_state":"computed"},"signer":{"signer_id":"pith.science","signer_type":"pith_registry","key_id":"pith-v1-2026-05","public_key_fingerprint":"8d4b5ee74e4693bcd1df2446408b0d54"},"created_at":"2026-05-18T00:10:32Z","supersedes":[],"prev_event":null,"signature":{"signature_status":"signed_v1","algorithm":"ed25519","key_id":"pith-v1-2026-05","public_key_fingerprint":"8d4b5ee74e4693bcd1df2446408b0d54","signature_b64":"ayxjtuw+BRjUHGaZXzvxPveoY85S0dfutq4cuzAPfQf4RtlMRaJEoTA8tDHAsu1/93PVUZROhc86ur6nm8LkDw==","signed_message":"open_graph_event_sha256_bytes","signed_at":"2026-07-05T12:21:44.521096Z"},"content_sha256":"f9c47895280b9c39ed98c329000acbbdcf917a559932c4abfc4591bbc6282d51","schema_version":"1.0","event_id":"sha256:f9c47895280b9c39ed98c329000acbbdcf917a559932c4abfc4591bbc6282d51"},{"event_type":"graph_snapshot","subject_pith_number":"pith:2017:CMRLBBBSLB23H6CIOL3UGMDA3S","target":"graph","payload":{"graph_snapshot":{"paper":{"title":"Axion driven cosmic magneto-genesis during the QCD crossover","license":"http://arxiv.org/licenses/nonexclusive-distrib/1.0/","headline":"","cross_cats":[],"primary_cat":"astro-ph.CO","authors_text":"Brian Reville, Francesco Miniati, Gianluca Gregori, Subir Sarkar","submitted_at":"2017-08-25T05:04:11Z","abstract_excerpt":"We propose a mechanism for the generation of a magnetic field in the early universe during the QCD crossover assuming that dark matter is made of axions. Thermoelectric fields arise at pressure gradients in the primordial plasma due to the difference in charge, energy density and equation of state between the quark and lepton components. The axion field is coupled to the EM field, so when its spatial gradient is misaligned with the thermoelectric field, an electric current is driven. Due to the finite resistivity of the plasma an electric field appears that is generally rotational. For a QCD a"},"claims":{"count":0,"items":[],"snapshot_sha256":"258153158e38e3291e3d48162225fcdb2d5a3ed65a07baac614ab91432fd4f57"},"source":{"id":"1708.07614","kind":"arxiv","version":4},"verdict":{"id":null,"model_set":{},"created_at":null,"strongest_claim":"","one_line_summary":"","pipeline_version":null,"weakest_assumption":"","pith_extraction_headline":""},"references":{"count":0,"sample":[],"resolved_work":0,"snapshot_sha256":"258153158e38e3291e3d48162225fcdb2d5a3ed65a07baac614ab91432fd4f57","internal_anchors":0},"formal_canon":{"evidence_count":0,"snapshot_sha256":"258153158e38e3291e3d48162225fcdb2d5a3ed65a07baac614ab91432fd4f57"},"author_claims":{"count":0,"strong_count":0,"snapshot_sha256":"258153158e38e3291e3d48162225fcdb2d5a3ed65a07baac614ab91432fd4f57"},"builder_version":"pith-number-builder-2026-05-17-v1"},"verdict_id":null},"signer":{"signer_id":"pith.science","signer_type":"pith_registry","key_id":"pith-v1-2026-05","public_key_fingerprint":"8d4b5ee74e4693bcd1df2446408b0d54"},"created_at":"2026-05-18T00:10:32Z","supersedes":[],"prev_event":null,"signature":{"signature_status":"signed_v1","algorithm":"ed25519","key_id":"pith-v1-2026-05","public_key_fingerprint":"8d4b5ee74e4693bcd1df2446408b0d54","signature_b64":"zCpPpWBNdp+vJnEVOlKMubXJyXrsP3+23m/8b37J4A5dV4TnM5qPRDcrLrPCHRhM5O6aHM1uSiZw++n6w8K5Bg==","signed_message":"open_graph_event_sha256_bytes","signed_at":"2026-07-05T12:21:44.521443Z"},"content_sha256":"c72122c73ccc54f5a8e6cd903563a569b3beab5710aba98c8265b3a8c5d01b17","schema_version":"1.0","event_id":"sha256:c72122c73ccc54f5a8e6cd903563a569b3beab5710aba98c8265b3a8c5d01b17"}],"timestamp_proofs":[],"mirror_hints":[{"mirror_type":"https","name":"Pith Resolver","base_url":"https://pith.science","bundle_url":"https://pith.science/pith/CMRLBBBSLB23H6CIOL3UGMDA3S/bundle.json","state_url":"https://pith.science/pith/CMRLBBBSLB23H6CIOL3UGMDA3S/state.json","well_known_bundle_url":"https://pith.science/.well-known/pith/CMRLBBBSLB23H6CIOL3UGMDA3S/bundle.json","status":"primary"}],"public_keys":[{"key_id":"pith-v1-2026-05","algorithm":"ed25519","format":"raw","public_key_b64":"stVStoiQhXFxp4s2pdzPNoqVNBMojDU/fJ2db5S3CbM=","public_key_hex":"b2d552b68890857171a78b36a5dccf368a953413288c353f7c9d9d6f94b709b3","fingerprint_sha256_b32_first128bits":"RVFV5Z2OI2J3ZUO7ERDEBCYNKS","fingerprint_sha256_hex":"8d4b5ee74e4693bcd1df2446408b0d54","rotates_at":null,"url":"https://pith.science/pith-signing-key.json","notes":"Pith uses this Ed25519 key to sign canonical record SHA-256 digests. Verify with: ed25519_verify(public_key, message=canonical_sha256_bytes, signature=base64decode(signature_b64))."}],"merge_version":"pith-open-graph-merge-v1","built_at":"2026-07-05T12:21:44Z","links":{"resolver":"https://pith.science/pith/CMRLBBBSLB23H6CIOL3UGMDA3S","bundle":"https://pith.science/pith/CMRLBBBSLB23H6CIOL3UGMDA3S/bundle.json","state":"https://pith.science/pith/CMRLBBBSLB23H6CIOL3UGMDA3S/state.json","well_known_bundle":"https://pith.science/.well-known/pith/CMRLBBBSLB23H6CIOL3UGMDA3S/bundle.json"},"state":{"state_type":"pith_open_graph_state","state_version":"1.0","pith_number":"pith:2017:CMRLBBBSLB23H6CIOL3UGMDA3S","merge_version":"pith-open-graph-merge-v1","event_count":2,"valid_event_count":2,"invalid_event_count":0,"equivocation_count":0,"current":{"canonical_record":{"metadata":{"abstract_canon_sha256":"4325358d26aafae743a20caeccef4e0ac2e1a31494f175c5f425e7b9678a003e","cross_cats_sorted":[],"license":"http://arxiv.org/licenses/nonexclusive-distrib/1.0/","primary_cat":"astro-ph.CO","submitted_at":"2017-08-25T05:04:11Z","title_canon_sha256":"2f47fb666ca570f6f7e9713796ad9a29f9666080149fcc379127c0e4b54789c5"},"schema_version":"1.0","source":{"id":"1708.07614","kind":"arxiv","version":4}},"source_aliases":[{"alias_kind":"arxiv","alias_value":"1708.07614","created_at":"2026-05-18T00:10:32Z"},{"alias_kind":"arxiv_version","alias_value":"1708.07614v4","created_at":"2026-05-18T00:10:32Z"},{"alias_kind":"doi","alias_value":"10.48550/arxiv.1708.07614","created_at":"2026-05-18T00:10:32Z"},{"alias_kind":"pith_short_12","alias_value":"CMRLBBBSLB23","created_at":"2026-05-18T12:31:10Z"},{"alias_kind":"pith_short_16","alias_value":"CMRLBBBSLB23H6CI","created_at":"2026-05-18T12:31:10Z"},{"alias_kind":"pith_short_8","alias_value":"CMRLBBBS","created_at":"2026-05-18T12:31:10Z"}],"graph_snapshots":[{"event_id":"sha256:c72122c73ccc54f5a8e6cd903563a569b3beab5710aba98c8265b3a8c5d01b17","target":"graph","created_at":"2026-05-18T00:10:32Z","signer":{"key_id":"pith-v1-2026-05","public_key_fingerprint":"8d4b5ee74e4693bcd1df2446408b0d54","signer_id":"pith.science","signer_type":"pith_registry"},"payload":{"graph_snapshot":{"author_claims":{"count":0,"snapshot_sha256":"258153158e38e3291e3d48162225fcdb2d5a3ed65a07baac614ab91432fd4f57","strong_count":0},"builder_version":"pith-number-builder-2026-05-17-v1","claims":{"count":0,"items":[],"snapshot_sha256":"258153158e38e3291e3d48162225fcdb2d5a3ed65a07baac614ab91432fd4f57"},"formal_canon":{"evidence_count":0,"snapshot_sha256":"258153158e38e3291e3d48162225fcdb2d5a3ed65a07baac614ab91432fd4f57"},"paper":{"abstract_excerpt":"We propose a mechanism for the generation of a magnetic field in the early universe during the QCD crossover assuming that dark matter is made of axions. Thermoelectric fields arise at pressure gradients in the primordial plasma due to the difference in charge, energy density and equation of state between the quark and lepton components. The axion field is coupled to the EM field, so when its spatial gradient is misaligned with the thermoelectric field, an electric current is driven. Due to the finite resistivity of the plasma an electric field appears that is generally rotational. For a QCD a","authors_text":"Brian Reville, Francesco Miniati, Gianluca Gregori, Subir Sarkar","cross_cats":[],"headline":"","license":"http://arxiv.org/licenses/nonexclusive-distrib/1.0/","primary_cat":"astro-ph.CO","submitted_at":"2017-08-25T05:04:11Z","title":"Axion driven cosmic magneto-genesis during the QCD crossover"},"references":{"count":0,"internal_anchors":0,"resolved_work":0,"sample":[],"snapshot_sha256":"258153158e38e3291e3d48162225fcdb2d5a3ed65a07baac614ab91432fd4f57"},"source":{"id":"1708.07614","kind":"arxiv","version":4},"verdict":{"created_at":null,"id":null,"model_set":{},"one_line_summary":"","pipeline_version":null,"pith_extraction_headline":"","strongest_claim":"","weakest_assumption":""}},"verdict_id":null}}],"author_attestations":[],"timestamp_anchors":[],"storage_attestations":[],"citation_signatures":[],"replication_records":[],"corrections":[],"mirror_hints":[],"record_created":{"event_id":"sha256:f9c47895280b9c39ed98c329000acbbdcf917a559932c4abfc4591bbc6282d51","target":"record","created_at":"2026-05-18T00:10:32Z","signer":{"key_id":"pith-v1-2026-05","public_key_fingerprint":"8d4b5ee74e4693bcd1df2446408b0d54","signer_id":"pith.science","signer_type":"pith_registry"},"payload":{"attestation_state":"computed","canonical_record":{"metadata":{"abstract_canon_sha256":"4325358d26aafae743a20caeccef4e0ac2e1a31494f175c5f425e7b9678a003e","cross_cats_sorted":[],"license":"http://arxiv.org/licenses/nonexclusive-distrib/1.0/","primary_cat":"astro-ph.CO","submitted_at":"2017-08-25T05:04:11Z","title_canon_sha256":"2f47fb666ca570f6f7e9713796ad9a29f9666080149fcc379127c0e4b54789c5"},"schema_version":"1.0","source":{"id":"1708.07614","kind":"arxiv","version":4}},"canonical_sha256":"1322b084325875b3f84872f7433060dc8feda3053a0ef0b8911644707d7620ec","receipt":{"algorithm":"ed25519","builder_version":"pith-number-builder-2026-05-17-v1","canonical_sha256":"1322b084325875b3f84872f7433060dc8feda3053a0ef0b8911644707d7620ec","first_computed_at":"2026-05-18T00:10:32.276291Z","key_id":"pith-v1-2026-05","kind":"pith_receipt","last_reissued_at":"2026-05-18T00:10:32.276291Z","public_key_fingerprint":"8d4b5ee74e4693bcd1df2446408b0d54","receipt_version":"0.3","signature_b64":"SIWTBcuskYZBCLG2vY74GxtqZPdziTa+9Naf9W/5z8XbxMd9meID6zkZ/LGhglC/8lHCKr4LAiGSLeLscmWsAQ==","signature_status":"signed_v1","signed_at":"2026-05-18T00:10:32.277001Z","signed_message":"canonical_sha256_bytes"},"source_id":"1708.07614","source_kind":"arxiv","source_version":4}}},"equivocations":[],"invalid_events":[],"applied_event_ids":["sha256:f9c47895280b9c39ed98c329000acbbdcf917a559932c4abfc4591bbc6282d51","sha256:c72122c73ccc54f5a8e6cd903563a569b3beab5710aba98c8265b3a8c5d01b17"],"state_sha256":"dd12136e8470d8681067bc6405f6fae17557820c1930460d352c76c067a81ad1"},"bundle_signature":{"signature_status":"signed_v1","algorithm":"ed25519","key_id":"pith-v1-2026-05","public_key_fingerprint":"8d4b5ee74e4693bcd1df2446408b0d54","signature_b64":"AgVhokixr3r1mLrn9NFxujR0+sax+iKdV4WDlJBwkFOeYDdimSsjjmABuxMd/ZgralI5UAx9HBUnzWeV3nxaBQ==","signed_message":"bundle_sha256_bytes","signed_at":"2026-07-05T12:21:44.523308Z","bundle_sha256":"37c2e9927165fc4acd68f251b8440834720dbbd55ee4440fdebe692bd13fde1d"}}