{"state_type":"pith_open_graph_state","state_version":"1.0","pith_number":"pith:2016:7OSN5RYRXLSIKYZO4ZGWFCMAGV","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":"cb7c5cdd305ac9d9fdd85603dca0dd71ff9a64c09a0b688dc5d511e759971b89","cross_cats_sorted":[],"license":"http://arxiv.org/licenses/nonexclusive-distrib/1.0/","primary_cat":"physics.geo-ph","submitted_at":"2016-08-12T16:27:45Z","title_canon_sha256":"c014a40af07dce92977f141aeed2fa45e3b90bf03503d0296a3f959dc5624816"},"schema_version":"1.0","source":{"id":"1608.03841","kind":"arxiv","version":2}},"source_aliases":[{"alias_kind":"arxiv","alias_value":"1608.03841","created_at":"2026-05-18T00:50:52Z"},{"alias_kind":"arxiv_version","alias_value":"1608.03841v2","created_at":"2026-05-18T00:50:52Z"},{"alias_kind":"doi","alias_value":"10.48550/arxiv.1608.03841","created_at":"2026-05-18T00:50:52Z"},{"alias_kind":"pith_short_12","alias_value":"7OSN5RYRXLSI","created_at":"2026-05-18T12:30:04Z"},{"alias_kind":"pith_short_16","alias_value":"7OSN5RYRXLSIKYZO","created_at":"2026-05-18T12:30:04Z"},{"alias_kind":"pith_short_8","alias_value":"7OSN5RYR","created_at":"2026-05-18T12:30:04Z"}],"graph_snapshots":[{"event_id":"sha256:e99e4684b425d0e1b631e906dad717387c9483479fb4fdf112b0f732f3719fa6","target":"graph","created_at":"2026-05-18T00:50:52Z","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":"Deep-Earth volatile cycles couple the mantle with near-surface reservoirs. Volatiles are emitted by volcanism and, in particular, from mid-ocean ridges, which are the most prolific source of basaltic volcanism. Estimates of volatile extraction from the asthenosphere beneath ridges typically rely on measurements of undegassed lavas combined with simple petrogenetic models of the mean degree of melting. Estimated volatile fluxes have large uncertainties; this is partly due to a poor understanding of how volatiles are transported by magma in the asthenosphere. Here, we assess the fate of mantle v","authors_text":"Marc M Hirschmann, Richard F Katz, Tobias Keller","cross_cats":[],"headline":"","license":"http://arxiv.org/licenses/nonexclusive-distrib/1.0/","primary_cat":"physics.geo-ph","submitted_at":"2016-08-12T16:27:45Z","title":"Volatiles beneath mid-ocean ridges: deep melting, channelised transport, focusing, and metasomatism"},"references":{"count":0,"internal_anchors":0,"resolved_work":0,"sample":[],"snapshot_sha256":"258153158e38e3291e3d48162225fcdb2d5a3ed65a07baac614ab91432fd4f57"},"source":{"id":"1608.03841","kind":"arxiv","version":2},"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:c059ffbdc58824b83619e118e1d9a453bf2e2fbca421d62ca4cf3fd411945b9c","target":"record","created_at":"2026-05-18T00:50:52Z","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":"cb7c5cdd305ac9d9fdd85603dca0dd71ff9a64c09a0b688dc5d511e759971b89","cross_cats_sorted":[],"license":"http://arxiv.org/licenses/nonexclusive-distrib/1.0/","primary_cat":"physics.geo-ph","submitted_at":"2016-08-12T16:27:45Z","title_canon_sha256":"c014a40af07dce92977f141aeed2fa45e3b90bf03503d0296a3f959dc5624816"},"schema_version":"1.0","source":{"id":"1608.03841","kind":"arxiv","version":2}},"canonical_sha256":"fba4dec711bae485632ee64d628980355a8ba9a7fa680cf1b18c4433190e5838","receipt":{"algorithm":"ed25519","builder_version":"pith-number-builder-2026-05-17-v1","canonical_sha256":"fba4dec711bae485632ee64d628980355a8ba9a7fa680cf1b18c4433190e5838","first_computed_at":"2026-05-18T00:50:52.111010Z","key_id":"pith-v1-2026-05","kind":"pith_receipt","last_reissued_at":"2026-05-18T00:50:52.111010Z","public_key_fingerprint":"8d4b5ee74e4693bcd1df2446408b0d54","receipt_version":"0.3","signature_b64":"BYuvuvJ0XlE3B6xp3zyEKQLvdFjoJcqInGFpM/Ljq+WKWkJdLFnmgwC/+7lttH2M1iyINCEH+vgollZEwIkuAg==","signature_status":"signed_v1","signed_at":"2026-05-18T00:50:52.111558Z","signed_message":"canonical_sha256_bytes"},"source_id":"1608.03841","source_kind":"arxiv","source_version":2}}},"equivocations":[],"invalid_events":[],"applied_event_ids":["sha256:c059ffbdc58824b83619e118e1d9a453bf2e2fbca421d62ca4cf3fd411945b9c","sha256:e99e4684b425d0e1b631e906dad717387c9483479fb4fdf112b0f732f3719fa6"],"state_sha256":"871a1602e69679bd332347856657ee3f2807c0213b042c825128d4964477108d"}