{"bundle_type":"pith_open_graph_bundle","bundle_version":"1.0","pith_number":"pith:2026:FTXNVWUB5ZVVA4JGAYKQKS3Y3M","short_pith_number":"pith:FTXNVWUB","canonical_record":{"source":{"id":"2607.12179","kind":"arxiv","version":1},"metadata":{"license":"http://arxiv.org/licenses/nonexclusive-distrib/1.0/","primary_cat":"physics.ao-ph","submitted_at":"2026-07-13T21:57:30Z","cross_cats_sorted":["astro-ph.EP","nlin.AO"],"title_canon_sha256":"4b2f93350f2b3ec69c13ea788995c01bef796bd60c00b279705fd47da37b57dc","abstract_canon_sha256":"4fb8f6be3335df37aeff9cd843a0154c601d2688b0cc931b463528e621bb2112"},"schema_version":"1.0"},"canonical_sha256":"2ceedada81ee6b5071260615054b78db37218fb53a396cc3a6d36c0e6f064ebc","source":{"kind":"arxiv","id":"2607.12179","version":1},"source_aliases":[{"alias_kind":"arxiv","alias_value":"2607.12179","created_at":"2026-07-15T00:21:37Z"},{"alias_kind":"arxiv_version","alias_value":"2607.12179v1","created_at":"2026-07-15T00:21:37Z"},{"alias_kind":"doi","alias_value":"10.48550/arxiv.2607.12179","created_at":"2026-07-15T00:21:37Z"},{"alias_kind":"pith_short_12","alias_value":"FTXNVWUB5ZVV","created_at":"2026-07-15T00:21:37Z"},{"alias_kind":"pith_short_16","alias_value":"FTXNVWUB5ZVVA4JG","created_at":"2026-07-15T00:21:37Z"},{"alias_kind":"pith_short_8","alias_value":"FTXNVWUB","created_at":"2026-07-15T00:21:37Z"}],"events":[{"event_type":"record_created","subject_pith_number":"pith:2026:FTXNVWUB5ZVVA4JGAYKQKS3Y3M","target":"record","payload":{"canonical_record":{"source":{"id":"2607.12179","kind":"arxiv","version":1},"metadata":{"license":"http://arxiv.org/licenses/nonexclusive-distrib/1.0/","primary_cat":"physics.ao-ph","submitted_at":"2026-07-13T21:57:30Z","cross_cats_sorted":["astro-ph.EP","nlin.AO"],"title_canon_sha256":"4b2f93350f2b3ec69c13ea788995c01bef796bd60c00b279705fd47da37b57dc","abstract_canon_sha256":"4fb8f6be3335df37aeff9cd843a0154c601d2688b0cc931b463528e621bb2112"},"schema_version":"1.0"},"canonical_sha256":"2ceedada81ee6b5071260615054b78db37218fb53a396cc3a6d36c0e6f064ebc","receipt":{"kind":"pith_receipt","key_id":"pith-v1-2026-05","algorithm":"ed25519","signed_at":"2026-07-15T00:21:37.068085Z","signature_b64":"GeUXLEPIMf1Agbz+xq8kU2AZgY+2l8v8S3nlko8DaZu2hMbxntQvCHlc1QR4Tw61gkaHoUqBfecXPl5ld8k7CQ==","signed_message":"canonical_sha256_bytes","builder_version":"pith-number-builder-2026-05-17-v1","receipt_version":"0.3","canonical_sha256":"2ceedada81ee6b5071260615054b78db37218fb53a396cc3a6d36c0e6f064ebc","last_reissued_at":"2026-07-15T00:21:37.067336Z","signature_status":"signed_v1","first_computed_at":"2026-07-15T00:21:37.067336Z","public_key_fingerprint":"8d4b5ee74e4693bcd1df2446408b0d54"},"source_kind":"arxiv","source_id":"2607.12179","source_version":1,"attestation_state":"computed"},"signer":{"signer_id":"pith.science","signer_type":"pith_registry","key_id":"pith-v1-2026-05","public_key_fingerprint":"8d4b5ee74e4693bcd1df2446408b0d54"},"created_at":"2026-07-15T00:21:37Z","supersedes":[],"prev_event":null,"signature":{"signature_status":"signed_v1","algorithm":"ed25519","key_id":"pith-v1-2026-05","public_key_fingerprint":"8d4b5ee74e4693bcd1df2446408b0d54","signature_b64":"1S8x9Whad7x5PrchEoeM0gclqAzWpV5lD06L3ZL7//E4m6I++/eWrqOFLN9AfvSspnsfoEryds3aSfutCQBuCw==","signed_message":"open_graph_event_sha256_bytes","signed_at":"2026-08-18T08:52:14.279230Z"},"content_sha256":"fc1188e0fe47424f591a3021512e746dada1a9e22232d5b1d09a758db470963e","schema_version":"1.0","event_id":"sha256:fc1188e0fe47424f591a3021512e746dada1a9e22232d5b1d09a758db470963e"},{"event_type":"graph_snapshot","subject_pith_number":"pith:2026:FTXNVWUB5ZVVA4JGAYKQKS3Y3M","target":"graph","payload":{"graph_snapshot":{"paper":{"title":"Modeling the response of the marine carbon cycle to extreme CO$_2$ injection events","license":"http://arxiv.org/licenses/nonexclusive-distrib/1.0/","headline":"","cross_cats":["astro-ph.EP","nlin.AO"],"primary_cat":"physics.ao-ph","authors_text":"Corinne Myers, Hao Helen Zhang, Ivan Sudakow, James Witts, Parimita Roy, Punit Gandhi, Rowan Lockwood","submitted_at":"2026-07-13T21:57:30Z","abstract_excerpt":"We explore how the response of a conceptual model of the marine carbon cycle depends on the way in which carbon is injected from the atmosphere. We find that, for single-injection pulses, the threshold amount required for a large response of the excitable system depends on pulse duration but not on its specific form. We do, however, see differences in the number of large transient responses in carbon and, correspondingly, the duration of the response for different pulse shapes. These differences are magnified as the system is pushed towards increased excitability and can be understood in terms"},"claims":{"count":0,"items":[],"snapshot_sha256":"258153158e38e3291e3d48162225fcdb2d5a3ed65a07baac614ab91432fd4f57"},"source":{"id":"2607.12179","kind":"arxiv","version":1},"verdict":{"id":null,"model_set":{},"created_at":null,"strongest_claim":"","one_line_summary":"","pipeline_version":null,"weakest_assumption":"","pith_extraction_headline":""},"integrity":{"clean":true,"summary":{"advisory":0,"critical":0,"by_detector":{},"informational":0},"endpoint":"/pith/2607.12179/integrity.json","findings":[],"available":true,"detectors_run":[],"snapshot_sha256":"c28c3603d3b5d939e8dc4c7e95fa8dfce3d595e45f758748cecf8e644a296938"},"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":"2026-07-15T00:21:37Z","supersedes":[],"prev_event":null,"signature":{"signature_status":"signed_v1","algorithm":"ed25519","key_id":"pith-v1-2026-05","public_key_fingerprint":"8d4b5ee74e4693bcd1df2446408b0d54","signature_b64":"YsDHWuV98oBdUdP22S8AtwcqBOoHKQRK2DSclfR76iZqRFo7ayWF/zmoAJmEA4BzJMOHycjdNV5cTTl8xvAUDA==","signed_message":"open_graph_event_sha256_bytes","signed_at":"2026-08-18T08:52:14.279690Z"},"content_sha256":"8e215823378c315c7c4f192f30744b653c20bb3223ee97805feecb071cbb71a3","schema_version":"1.0","event_id":"sha256:8e215823378c315c7c4f192f30744b653c20bb3223ee97805feecb071cbb71a3"}],"timestamp_proofs":[],"mirror_hints":[{"mirror_type":"https","name":"Pith Resolver","base_url":"https://pith.science","bundle_url":"https://pith.science/pith/FTXNVWUB5ZVVA4JGAYKQKS3Y3M/bundle.json","state_url":"https://pith.science/pith/FTXNVWUB5ZVVA4JGAYKQKS3Y3M/state.json","well_known_bundle_url":"https://pith.science/.well-known/pith/FTXNVWUB5ZVVA4JGAYKQKS3Y3M/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":"2026-08-18T08:52:14Z","links":{"resolver":"https://pith.science/pith/FTXNVWUB5ZVVA4JGAYKQKS3Y3M","bundle":"https://pith.science/pith/FTXNVWUB5ZVVA4JGAYKQKS3Y3M/bundle.json","state":"https://pith.science/pith/FTXNVWUB5ZVVA4JGAYKQKS3Y3M/state.json","well_known_bundle":"https://pith.science/.well-known/pith/FTXNVWUB5ZVVA4JGAYKQKS3Y3M/bundle.json"},"state":{"state_type":"pith_open_graph_state","state_version":"1.0","pith_number":"pith:2026:FTXNVWUB5ZVVA4JGAYKQKS3Y3M","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":"4fb8f6be3335df37aeff9cd843a0154c601d2688b0cc931b463528e621bb2112","cross_cats_sorted":["astro-ph.EP","nlin.AO"],"license":"http://arxiv.org/licenses/nonexclusive-distrib/1.0/","primary_cat":"physics.ao-ph","submitted_at":"2026-07-13T21:57:30Z","title_canon_sha256":"4b2f93350f2b3ec69c13ea788995c01bef796bd60c00b279705fd47da37b57dc"},"schema_version":"1.0","source":{"id":"2607.12179","kind":"arxiv","version":1}},"source_aliases":[{"alias_kind":"arxiv","alias_value":"2607.12179","created_at":"2026-07-15T00:21:37Z"},{"alias_kind":"arxiv_version","alias_value":"2607.12179v1","created_at":"2026-07-15T00:21:37Z"},{"alias_kind":"doi","alias_value":"10.48550/arxiv.2607.12179","created_at":"2026-07-15T00:21:37Z"},{"alias_kind":"pith_short_12","alias_value":"FTXNVWUB5ZVV","created_at":"2026-07-15T00:21:37Z"},{"alias_kind":"pith_short_16","alias_value":"FTXNVWUB5ZVVA4JG","created_at":"2026-07-15T00:21:37Z"},{"alias_kind":"pith_short_8","alias_value":"FTXNVWUB","created_at":"2026-07-15T00:21:37Z"}],"graph_snapshots":[{"event_id":"sha256:8e215823378c315c7c4f192f30744b653c20bb3223ee97805feecb071cbb71a3","target":"graph","created_at":"2026-07-15T00:21:37Z","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"},"integrity":{"available":true,"clean":true,"detectors_run":[],"endpoint":"/pith/2607.12179/integrity.json","findings":[],"snapshot_sha256":"c28c3603d3b5d939e8dc4c7e95fa8dfce3d595e45f758748cecf8e644a296938","summary":{"advisory":0,"by_detector":{},"critical":0,"informational":0}},"paper":{"abstract_excerpt":"We explore how the response of a conceptual model of the marine carbon cycle depends on the way in which carbon is injected from the atmosphere. We find that, for single-injection pulses, the threshold amount required for a large response of the excitable system depends on pulse duration but not on its specific form. We do, however, see differences in the number of large transient responses in carbon and, correspondingly, the duration of the response for different pulse shapes. These differences are magnified as the system is pushed towards increased excitability and can be understood in terms","authors_text":"Corinne Myers, Hao Helen Zhang, Ivan Sudakow, James Witts, Parimita Roy, Punit Gandhi, Rowan Lockwood","cross_cats":["astro-ph.EP","nlin.AO"],"headline":"","license":"http://arxiv.org/licenses/nonexclusive-distrib/1.0/","primary_cat":"physics.ao-ph","submitted_at":"2026-07-13T21:57:30Z","title":"Modeling the response of the marine carbon cycle to extreme CO$_2$ injection events"},"references":{"count":0,"internal_anchors":0,"resolved_work":0,"sample":[],"snapshot_sha256":"258153158e38e3291e3d48162225fcdb2d5a3ed65a07baac614ab91432fd4f57"},"source":{"id":"2607.12179","kind":"arxiv","version":1},"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:fc1188e0fe47424f591a3021512e746dada1a9e22232d5b1d09a758db470963e","target":"record","created_at":"2026-07-15T00:21:37Z","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":"4fb8f6be3335df37aeff9cd843a0154c601d2688b0cc931b463528e621bb2112","cross_cats_sorted":["astro-ph.EP","nlin.AO"],"license":"http://arxiv.org/licenses/nonexclusive-distrib/1.0/","primary_cat":"physics.ao-ph","submitted_at":"2026-07-13T21:57:30Z","title_canon_sha256":"4b2f93350f2b3ec69c13ea788995c01bef796bd60c00b279705fd47da37b57dc"},"schema_version":"1.0","source":{"id":"2607.12179","kind":"arxiv","version":1}},"canonical_sha256":"2ceedada81ee6b5071260615054b78db37218fb53a396cc3a6d36c0e6f064ebc","receipt":{"algorithm":"ed25519","builder_version":"pith-number-builder-2026-05-17-v1","canonical_sha256":"2ceedada81ee6b5071260615054b78db37218fb53a396cc3a6d36c0e6f064ebc","first_computed_at":"2026-07-15T00:21:37.067336Z","key_id":"pith-v1-2026-05","kind":"pith_receipt","last_reissued_at":"2026-07-15T00:21:37.067336Z","public_key_fingerprint":"8d4b5ee74e4693bcd1df2446408b0d54","receipt_version":"0.3","signature_b64":"GeUXLEPIMf1Agbz+xq8kU2AZgY+2l8v8S3nlko8DaZu2hMbxntQvCHlc1QR4Tw61gkaHoUqBfecXPl5ld8k7CQ==","signature_status":"signed_v1","signed_at":"2026-07-15T00:21:37.068085Z","signed_message":"canonical_sha256_bytes"},"source_id":"2607.12179","source_kind":"arxiv","source_version":1}}},"equivocations":[],"invalid_events":[],"applied_event_ids":["sha256:fc1188e0fe47424f591a3021512e746dada1a9e22232d5b1d09a758db470963e","sha256:8e215823378c315c7c4f192f30744b653c20bb3223ee97805feecb071cbb71a3"],"state_sha256":"27d6851077d1095b298b9d0396d628dbbc9f9342f15edd1285d096bbd54f26e9"},"bundle_signature":{"signature_status":"signed_v1","algorithm":"ed25519","key_id":"pith-v1-2026-05","public_key_fingerprint":"8d4b5ee74e4693bcd1df2446408b0d54","signature_b64":"38jW0y/XOLvlvs+vf0f/tQGhIOYAVrDoZ8ch9x2lslqTiQxTFGrNr0pKMbRAjDJ8dHyAogNX+cuhxegJpon9Dg==","signed_message":"bundle_sha256_bytes","signed_at":"2026-08-18T08:52:14.283854Z","bundle_sha256":"a11867a3e93d07c58d1a3d00e82af03c9fb3dd94dd28189f3de48718f5c2f20c"}}