{"bundle_type":"pith_open_graph_bundle","bundle_version":"1.0","pith_number":"pith:2017:SDX2U3IBDW37YY2NKRZSZU6M3R","short_pith_number":"pith:SDX2U3IB","canonical_record":{"source":{"id":"1710.08761","kind":"arxiv","version":1},"metadata":{"license":"http://arxiv.org/licenses/nonexclusive-distrib/1.0/","primary_cat":"astro-ph.EP","submitted_at":"2017-10-24T13:31:47Z","cross_cats_sorted":[],"title_canon_sha256":"be26ef098d8f149dbf6e357d936718e2fb447cd4a03ed9ea80900480874f18ac","abstract_canon_sha256":"2a8a5dcfc9c36e551589905f00d76ce1949346751622b6ec231cf779a923722d"},"schema_version":"1.0"},"canonical_sha256":"90efaa6d011db7fc634d54732cd3ccdc75f7dd81757629d649b8c2552fcec594","source":{"kind":"arxiv","id":"1710.08761","version":1},"source_aliases":[{"alias_kind":"arxiv","alias_value":"1710.08761","created_at":"2026-05-18T00:32:03Z"},{"alias_kind":"arxiv_version","alias_value":"1710.08761v1","created_at":"2026-05-18T00:32:03Z"},{"alias_kind":"doi","alias_value":"10.48550/arxiv.1710.08761","created_at":"2026-05-18T00:32:03Z"},{"alias_kind":"pith_short_12","alias_value":"SDX2U3IBDW37","created_at":"2026-05-18T12:31:43Z"},{"alias_kind":"pith_short_16","alias_value":"SDX2U3IBDW37YY2N","created_at":"2026-05-18T12:31:43Z"},{"alias_kind":"pith_short_8","alias_value":"SDX2U3IB","created_at":"2026-05-18T12:31:43Z"}],"events":[{"event_type":"record_created","subject_pith_number":"pith:2017:SDX2U3IBDW37YY2NKRZSZU6M3R","target":"record","payload":{"canonical_record":{"source":{"id":"1710.08761","kind":"arxiv","version":1},"metadata":{"license":"http://arxiv.org/licenses/nonexclusive-distrib/1.0/","primary_cat":"astro-ph.EP","submitted_at":"2017-10-24T13:31:47Z","cross_cats_sorted":[],"title_canon_sha256":"be26ef098d8f149dbf6e357d936718e2fb447cd4a03ed9ea80900480874f18ac","abstract_canon_sha256":"2a8a5dcfc9c36e551589905f00d76ce1949346751622b6ec231cf779a923722d"},"schema_version":"1.0"},"canonical_sha256":"90efaa6d011db7fc634d54732cd3ccdc75f7dd81757629d649b8c2552fcec594","receipt":{"kind":"pith_receipt","key_id":"pith-v1-2026-05","algorithm":"ed25519","signed_at":"2026-05-18T00:32:03.874531Z","signature_b64":"3wBd8LAQWJbsUqa8TiqBwfcXP439kDhN0tXQykjZAgE2abPZaOcMr6AF8meDW0c6dRrKvRG3/Ajsm0bX3cGTCA==","signed_message":"canonical_sha256_bytes","builder_version":"pith-number-builder-2026-05-17-v1","receipt_version":"0.3","canonical_sha256":"90efaa6d011db7fc634d54732cd3ccdc75f7dd81757629d649b8c2552fcec594","last_reissued_at":"2026-05-18T00:32:03.873881Z","signature_status":"signed_v1","first_computed_at":"2026-05-18T00:32:03.873881Z","public_key_fingerprint":"8d4b5ee74e4693bcd1df2446408b0d54"},"source_kind":"arxiv","source_id":"1710.08761","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":"2026-05-18T00:32:03Z","supersedes":[],"prev_event":null,"signature":{"signature_status":"signed_v1","algorithm":"ed25519","key_id":"pith-v1-2026-05","public_key_fingerprint":"8d4b5ee74e4693bcd1df2446408b0d54","signature_b64":"xnjFVfRYCtLRtofE/QJhXEoyFUIhvh52Kis6Ch0iPzjxmis4ZscfnUYYh9FoRH1anIDwiFA7B1euu+7IulC2Aw==","signed_message":"open_graph_event_sha256_bytes","signed_at":"2026-05-28T12:30:22.592589Z"},"content_sha256":"7f7d556dba73c8632573f49ea771bb74d7d760985db14b9ee6bac4c73b233871","schema_version":"1.0","event_id":"sha256:7f7d556dba73c8632573f49ea771bb74d7d760985db14b9ee6bac4c73b233871"},{"event_type":"graph_snapshot","subject_pith_number":"pith:2017:SDX2U3IBDW37YY2NKRZSZU6M3R","target":"graph","payload":{"graph_snapshot":{"paper":{"title":"Magma oceans and enhanced volcanism on TRAPPIST-1 planets due to induction heating","license":"http://arxiv.org/licenses/nonexclusive-distrib/1.0/","headline":"","cross_cats":[],"primary_cat":"astro-ph.EP","authors_text":"C. P. Johnstone, H. Lammer, K. G. Kislyakova, L. Fossati, L. Noack, M. Guedel, M. L. Khodachenko, P. Odert, V. V. Zaitsev","submitted_at":"2017-10-24T13:31:47Z","abstract_excerpt":"Low-mass M stars are plentiful in the Universe and often host small, rocky planets detectable with the current instrumentation. Recently, seven small planets have been discovered orbiting the ultracool dwarf TRAPPIST-1\\cite{Gillon16,Gillon17}. We examine the role of electromagnetic induction heating of these planets, caused by the star's rotation and the planet's orbital motion. If the stellar rotation and magnetic dipole axes are inclined with respect to each other, induction heating can melt the upper mantle and enormously increase volcanic activity, sometimes producing a magma ocean below t"},"claims":{"count":0,"items":[],"snapshot_sha256":"258153158e38e3291e3d48162225fcdb2d5a3ed65a07baac614ab91432fd4f57"},"source":{"id":"1710.08761","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":""},"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":"2026-05-18T00:32:03Z","supersedes":[],"prev_event":null,"signature":{"signature_status":"signed_v1","algorithm":"ed25519","key_id":"pith-v1-2026-05","public_key_fingerprint":"8d4b5ee74e4693bcd1df2446408b0d54","signature_b64":"7eBEOa2E7lQfdHG/T+lZeSeX5ehL63EFl4ojoy5lNvuHvqhQpDp7dRjesSahnqNWZdNNZFxdoLxrXx8aR288Cg==","signed_message":"open_graph_event_sha256_bytes","signed_at":"2026-05-28T12:30:22.593189Z"},"content_sha256":"db1a1425e5c5d43e5e8304095c91baaaee3e2010fe1fdc68cdbb034a46a22d8e","schema_version":"1.0","event_id":"sha256:db1a1425e5c5d43e5e8304095c91baaaee3e2010fe1fdc68cdbb034a46a22d8e"}],"timestamp_proofs":[],"mirror_hints":[{"mirror_type":"https","name":"Pith Resolver","base_url":"https://pith.science","bundle_url":"https://pith.science/pith/SDX2U3IBDW37YY2NKRZSZU6M3R/bundle.json","state_url":"https://pith.science/pith/SDX2U3IBDW37YY2NKRZSZU6M3R/state.json","well_known_bundle_url":"https://pith.science/.well-known/pith/SDX2U3IBDW37YY2NKRZSZU6M3R/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":"2026-05-28T12:30:22Z","links":{"resolver":"https://pith.science/pith/SDX2U3IBDW37YY2NKRZSZU6M3R","bundle":"https://pith.science/pith/SDX2U3IBDW37YY2NKRZSZU6M3R/bundle.json","state":"https://pith.science/pith/SDX2U3IBDW37YY2NKRZSZU6M3R/state.json","well_known_bundle":"https://pith.science/.well-known/pith/SDX2U3IBDW37YY2NKRZSZU6M3R/bundle.json"},"state":{"state_type":"pith_open_graph_state","state_version":"1.0","pith_number":"pith:2017:SDX2U3IBDW37YY2NKRZSZU6M3R","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":"2a8a5dcfc9c36e551589905f00d76ce1949346751622b6ec231cf779a923722d","cross_cats_sorted":[],"license":"http://arxiv.org/licenses/nonexclusive-distrib/1.0/","primary_cat":"astro-ph.EP","submitted_at":"2017-10-24T13:31:47Z","title_canon_sha256":"be26ef098d8f149dbf6e357d936718e2fb447cd4a03ed9ea80900480874f18ac"},"schema_version":"1.0","source":{"id":"1710.08761","kind":"arxiv","version":1}},"source_aliases":[{"alias_kind":"arxiv","alias_value":"1710.08761","created_at":"2026-05-18T00:32:03Z"},{"alias_kind":"arxiv_version","alias_value":"1710.08761v1","created_at":"2026-05-18T00:32:03Z"},{"alias_kind":"doi","alias_value":"10.48550/arxiv.1710.08761","created_at":"2026-05-18T00:32:03Z"},{"alias_kind":"pith_short_12","alias_value":"SDX2U3IBDW37","created_at":"2026-05-18T12:31:43Z"},{"alias_kind":"pith_short_16","alias_value":"SDX2U3IBDW37YY2N","created_at":"2026-05-18T12:31:43Z"},{"alias_kind":"pith_short_8","alias_value":"SDX2U3IB","created_at":"2026-05-18T12:31:43Z"}],"graph_snapshots":[{"event_id":"sha256:db1a1425e5c5d43e5e8304095c91baaaee3e2010fe1fdc68cdbb034a46a22d8e","target":"graph","created_at":"2026-05-18T00:32:03Z","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":"Low-mass M stars are plentiful in the Universe and often host small, rocky planets detectable with the current instrumentation. Recently, seven small planets have been discovered orbiting the ultracool dwarf TRAPPIST-1\\cite{Gillon16,Gillon17}. We examine the role of electromagnetic induction heating of these planets, caused by the star's rotation and the planet's orbital motion. If the stellar rotation and magnetic dipole axes are inclined with respect to each other, induction heating can melt the upper mantle and enormously increase volcanic activity, sometimes producing a magma ocean below t","authors_text":"C. P. Johnstone, H. Lammer, K. G. Kislyakova, L. Fossati, L. Noack, M. Guedel, M. L. Khodachenko, P. Odert, V. V. Zaitsev","cross_cats":[],"headline":"","license":"http://arxiv.org/licenses/nonexclusive-distrib/1.0/","primary_cat":"astro-ph.EP","submitted_at":"2017-10-24T13:31:47Z","title":"Magma oceans and enhanced volcanism on TRAPPIST-1 planets due to induction heating"},"references":{"count":0,"internal_anchors":0,"resolved_work":0,"sample":[],"snapshot_sha256":"258153158e38e3291e3d48162225fcdb2d5a3ed65a07baac614ab91432fd4f57"},"source":{"id":"1710.08761","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":"sha256:7f7d556dba73c8632573f49ea771bb74d7d760985db14b9ee6bac4c73b233871","target":"record","created_at":"2026-05-18T00:32:03Z","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":"2a8a5dcfc9c36e551589905f00d76ce1949346751622b6ec231cf779a923722d","cross_cats_sorted":[],"license":"http://arxiv.org/licenses/nonexclusive-distrib/1.0/","primary_cat":"astro-ph.EP","submitted_at":"2017-10-24T13:31:47Z","title_canon_sha256":"be26ef098d8f149dbf6e357d936718e2fb447cd4a03ed9ea80900480874f18ac"},"schema_version":"1.0","source":{"id":"1710.08761","kind":"arxiv","version":1}},"canonical_sha256":"90efaa6d011db7fc634d54732cd3ccdc75f7dd81757629d649b8c2552fcec594","receipt":{"algorithm":"ed25519","builder_version":"pith-number-builder-2026-05-17-v1","canonical_sha256":"90efaa6d011db7fc634d54732cd3ccdc75f7dd81757629d649b8c2552fcec594","first_computed_at":"2026-05-18T00:32:03.873881Z","key_id":"pith-v1-2026-05","kind":"pith_receipt","last_reissued_at":"2026-05-18T00:32:03.873881Z","public_key_fingerprint":"8d4b5ee74e4693bcd1df2446408b0d54","receipt_version":"0.3","signature_b64":"3wBd8LAQWJbsUqa8TiqBwfcXP439kDhN0tXQykjZAgE2abPZaOcMr6AF8meDW0c6dRrKvRG3/Ajsm0bX3cGTCA==","signature_status":"signed_v1","signed_at":"2026-05-18T00:32:03.874531Z","signed_message":"canonical_sha256_bytes"},"source_id":"1710.08761","source_kind":"arxiv","source_version":1}}},"equivocations":[],"invalid_events":[],"applied_event_ids":["sha256:7f7d556dba73c8632573f49ea771bb74d7d760985db14b9ee6bac4c73b233871","sha256:db1a1425e5c5d43e5e8304095c91baaaee3e2010fe1fdc68cdbb034a46a22d8e"],"state_sha256":"9143690a1781fac852fbb4227cf7035568c2dafa017f49e13d9d6f9379de4a12"},"bundle_signature":{"signature_status":"signed_v1","algorithm":"ed25519","key_id":"pith-v1-2026-05","public_key_fingerprint":"8d4b5ee74e4693bcd1df2446408b0d54","signature_b64":"hY5SuNdesQKxOA0SkIJUn6PnZY0D8zJGtFEmC/IsXQlznBHzsbb4PlvXsSQ4o23+GvSRK5NP2hULFp2uZaCEAQ==","signed_message":"bundle_sha256_bytes","signed_at":"2026-05-28T12:30:22.596216Z","bundle_sha256":"00c5aa0685b5a67b31b7ad737f62ef9a862b3e4380f8c65287b93635c430bbf3"}}