{"record_type":"pith_number_record","schema_url":"https://pith.science/schemas/pith-number/v1.json","pith_number":"pith:2024:3WWFFB6QOG32WH5FY73MCQLLY5","short_pith_number":"pith:3WWFFB6Q","schema_version":"1.0","canonical_sha256":"ddac5287d071b7ab1fa5c7f6c1416bc7768e9e9a98c6e520f82924837a4519d6","source":{"kind":"arxiv","id":"2411.18595","version":2},"attestation_state":"computed","paper":{"title":"Potential technosignature from anomalously low deuterium/hydrogen (D/H) in planetary water depleted by nuclear fusion technology","license":"http://creativecommons.org/licenses/by/4.0/","headline":"","cross_cats":[],"primary_cat":"astro-ph.EP","authors_text":"David C. Catling, Joshua Krissansen-Totton, Tyler D. Robinson","submitted_at":"2024-11-27T18:40:46Z","abstract_excerpt":"Deuterium-deuterium (DD) fusion is viewed as an ideal energy source for humanity in the far future, given a vast seawater supply of D. Here, we consider long-lived, extraterrestrial, technological societies that develop DD fusion. If such a society persists over geologic timescales, oceanic deuterium would diminish. For an ocean mass and initial D/H that are Earth-like, fusion power use of only $\\sim$10 times that projected for humankind next century would deplete the deuterium-hydrogen ratio (D/H) in $\\sim$(a few)$\\times 10^8$ years to values below that of the local Interstellar Medium (ISM)."},"verification_status":{"content_addressed":true,"pith_receipt":true,"author_attested":false,"weak_author_claims":0,"strong_author_claims":0,"externally_anchored":false,"storage_verified":false,"citation_signatures":0,"replication_records":0,"graph_snapshot":true,"references_resolved":false,"formal_links_present":false},"canonical_record":{"source":{"id":"2411.18595","kind":"arxiv","version":2},"metadata":{"license":"http://creativecommons.org/licenses/by/4.0/","primary_cat":"astro-ph.EP","submitted_at":"2024-11-27T18:40:46Z","cross_cats_sorted":[],"title_canon_sha256":"a03f146bc04b2094c4406bf7644d42fcfade617ff542a691c13d7e825aa184b2","abstract_canon_sha256":"d8adf0a03084469096359215ea8937b31495a8abb644c76893c0690eabbedbe2"},"schema_version":"1.0"},"receipt":{"kind":"pith_receipt","key_id":"pith-v1-2026-05","algorithm":"ed25519","signed_at":"2026-07-05T09:41:47.881666Z","signature_b64":"DU8JrCVWzFcBHtsS160aTd2z76kqCWUBJZvvVs5jli5nnQK/tSLIr7YR9bFvfFwAO0QlIQNL7voVr0gAi2bTBQ==","signed_message":"canonical_sha256_bytes","builder_version":"pith-number-builder-2026-05-17-v1","receipt_version":"0.3","canonical_sha256":"ddac5287d071b7ab1fa5c7f6c1416bc7768e9e9a98c6e520f82924837a4519d6","last_reissued_at":"2026-07-05T09:41:47.881175Z","signature_status":"signed_v1","first_computed_at":"2026-07-05T09:41:47.881175Z","public_key_fingerprint":"8d4b5ee74e4693bcd1df2446408b0d54"},"graph_snapshot":{"paper":{"title":"Potential technosignature from anomalously low deuterium/hydrogen (D/H) in planetary water depleted by nuclear fusion technology","license":"http://creativecommons.org/licenses/by/4.0/","headline":"","cross_cats":[],"primary_cat":"astro-ph.EP","authors_text":"David C. Catling, Joshua Krissansen-Totton, Tyler D. Robinson","submitted_at":"2024-11-27T18:40:46Z","abstract_excerpt":"Deuterium-deuterium (DD) fusion is viewed as an ideal energy source for humanity in the far future, given a vast seawater supply of D. Here, we consider long-lived, extraterrestrial, technological societies that develop DD fusion. If such a society persists over geologic timescales, oceanic deuterium would diminish. For an ocean mass and initial D/H that are Earth-like, fusion power use of only $\\sim$10 times that projected for humankind next century would deplete the deuterium-hydrogen ratio (D/H) in $\\sim$(a few)$\\times 10^8$ years to values below that of the local Interstellar Medium (ISM)."},"claims":{"count":0,"items":[],"snapshot_sha256":"258153158e38e3291e3d48162225fcdb2d5a3ed65a07baac614ab91432fd4f57"},"source":{"id":"2411.18595","kind":"arxiv","version":2},"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/2411.18595/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"},"aliases":[{"alias_kind":"arxiv","alias_value":"2411.18595","created_at":"2026-07-05T09:41:47.881233+00:00"},{"alias_kind":"arxiv_version","alias_value":"2411.18595v2","created_at":"2026-07-05T09:41:47.881233+00:00"},{"alias_kind":"doi","alias_value":"10.48550/arxiv.2411.18595","created_at":"2026-07-05T09:41:47.881233+00:00"},{"alias_kind":"pith_short_12","alias_value":"3WWFFB6QOG32","created_at":"2026-07-05T09:41:47.881233+00:00"},{"alias_kind":"pith_short_16","alias_value":"3WWFFB6QOG32WH5F","created_at":"2026-07-05T09:41:47.881233+00:00"},{"alias_kind":"pith_short_8","alias_value":"3WWFFB6Q","created_at":"2026-07-05T09:41:47.881233+00:00"}],"events":[],"event_summary":{},"paper_claims":[],"inbound_citations":{"count":0,"internal_anchor_count":0,"sample":[]},"formal_canon":{"evidence_count":0,"sample":[],"anchors":[]},"links":{"html":"https://pith.science/pith/3WWFFB6QOG32WH5FY73MCQLLY5","json":"https://pith.science/pith/3WWFFB6QOG32WH5FY73MCQLLY5.json","graph_json":"https://pith.science/api/pith-number/3WWFFB6QOG32WH5FY73MCQLLY5/graph.json","events_json":"https://pith.science/api/pith-number/3WWFFB6QOG32WH5FY73MCQLLY5/events.json","paper":"https://pith.science/paper/3WWFFB6Q"},"agent_actions":{"view_html":"https://pith.science/pith/3WWFFB6QOG32WH5FY73MCQLLY5","download_json":"https://pith.science/pith/3WWFFB6QOG32WH5FY73MCQLLY5.json","view_paper":"https://pith.science/paper/3WWFFB6Q","resolve_alias":"https://pith.science/api/pith-number/resolve?arxiv=2411.18595&json=true","fetch_graph":"https://pith.science/api/pith-number/3WWFFB6QOG32WH5FY73MCQLLY5/graph.json","fetch_events":"https://pith.science/api/pith-number/3WWFFB6QOG32WH5FY73MCQLLY5/events.json","actions":{"anchor_timestamp":"https://pith.science/pith/3WWFFB6QOG32WH5FY73MCQLLY5/action/timestamp_anchor","attest_storage":"https://pith.science/pith/3WWFFB6QOG32WH5FY73MCQLLY5/action/storage_attestation","attest_author":"https://pith.science/pith/3WWFFB6QOG32WH5FY73MCQLLY5/action/author_attestation","sign_citation":"https://pith.science/pith/3WWFFB6QOG32WH5FY73MCQLLY5/action/citation_signature","submit_replication":"https://pith.science/pith/3WWFFB6QOG32WH5FY73MCQLLY5/action/replication_record"}},"created_at":"2026-07-05T09:41:47.881233+00:00","updated_at":"2026-07-05T09:41:47.881233+00:00"}