{"bundle_type":"pith_open_graph_bundle","bundle_version":"1.0","pith_number":"pith:2016:HEUQJFN2IF5HD63OVI3D3IPZQP","short_pith_number":"pith:HEUQJFN2","canonical_record":{"source":{"id":"1608.07372","kind":"arxiv","version":6},"metadata":{"license":"http://arxiv.org/licenses/nonexclusive-distrib/1.0/","primary_cat":"astro-ph.EP","submitted_at":"2016-08-26T07:05:05Z","cross_cats_sorted":[],"title_canon_sha256":"f46db6ef967d2cd0c23f75019a229efa46270458fdb8ca89f97ef1476c61ad38","abstract_canon_sha256":"5c3f148db4e4a5d2decdda7fa89819069aeccf4fcf509717be4b5cb564327c51"},"schema_version":"1.0"},"canonical_sha256":"39290495ba417a71fb6eaa363da1f983fa06732e21ffd36d73ffeb646df4c393","source":{"kind":"arxiv","id":"1608.07372","version":6},"source_aliases":[{"alias_kind":"arxiv","alias_value":"1608.07372","created_at":"2026-05-17T23:44:23Z"},{"alias_kind":"arxiv_version","alias_value":"1608.07372v6","created_at":"2026-05-17T23:44:23Z"},{"alias_kind":"doi","alias_value":"10.48550/arxiv.1608.07372","created_at":"2026-05-17T23:44:23Z"},{"alias_kind":"pith_short_12","alias_value":"HEUQJFN2IF5H","created_at":"2026-05-18T12:30:19Z"},{"alias_kind":"pith_short_16","alias_value":"HEUQJFN2IF5HD63O","created_at":"2026-05-18T12:30:19Z"},{"alias_kind":"pith_short_8","alias_value":"HEUQJFN2","created_at":"2026-05-18T12:30:19Z"}],"events":[{"event_type":"record_created","subject_pith_number":"pith:2016:HEUQJFN2IF5HD63OVI3D3IPZQP","target":"record","payload":{"canonical_record":{"source":{"id":"1608.07372","kind":"arxiv","version":6},"metadata":{"license":"http://arxiv.org/licenses/nonexclusive-distrib/1.0/","primary_cat":"astro-ph.EP","submitted_at":"2016-08-26T07:05:05Z","cross_cats_sorted":[],"title_canon_sha256":"f46db6ef967d2cd0c23f75019a229efa46270458fdb8ca89f97ef1476c61ad38","abstract_canon_sha256":"5c3f148db4e4a5d2decdda7fa89819069aeccf4fcf509717be4b5cb564327c51"},"schema_version":"1.0"},"canonical_sha256":"39290495ba417a71fb6eaa363da1f983fa06732e21ffd36d73ffeb646df4c393","receipt":{"kind":"pith_receipt","key_id":"pith-v1-2026-05","algorithm":"ed25519","signed_at":"2026-05-17T23:44:23.194391Z","signature_b64":"7Z7JQyeuoStBFrkSeYpFBjDWU8ura8hgY1EVyTD/7KJ1Ee4L7nAzKtHt+AglGKTBDmZwCzqN5yyoRU5lzuQ1BQ==","signed_message":"canonical_sha256_bytes","builder_version":"pith-number-builder-2026-05-17-v1","receipt_version":"0.3","canonical_sha256":"39290495ba417a71fb6eaa363da1f983fa06732e21ffd36d73ffeb646df4c393","last_reissued_at":"2026-05-17T23:44:23.193738Z","signature_status":"signed_v1","first_computed_at":"2026-05-17T23:44:23.193738Z","public_key_fingerprint":"8d4b5ee74e4693bcd1df2446408b0d54"},"source_kind":"arxiv","source_id":"1608.07372","source_version":6,"attestation_state":"computed"},"signer":{"signer_id":"pith.science","signer_type":"pith_registry","key_id":"pith-v1-2026-05","public_key_fingerprint":"8d4b5ee74e4693bcd1df2446408b0d54"},"created_at":"2026-05-17T23:44:23Z","supersedes":[],"prev_event":null,"signature":{"signature_status":"signed_v1","algorithm":"ed25519","key_id":"pith-v1-2026-05","public_key_fingerprint":"8d4b5ee74e4693bcd1df2446408b0d54","signature_b64":"zskynzZaoy/ug1ln99SNrkT85+xLUK35XU/+v1L101lyZ0vNKAVuMl6UDJ37oA+RZqFXZv1xEiB7sHV2CdXNAw==","signed_message":"open_graph_event_sha256_bytes","signed_at":"2026-06-22T01:58:24.725457Z"},"content_sha256":"108f3f6d0a20ae7dd79def578455665b7cb3407378833758986d6b0c83c30b92","schema_version":"1.0","event_id":"sha256:108f3f6d0a20ae7dd79def578455665b7cb3407378833758986d6b0c83c30b92"},{"event_type":"graph_snapshot","subject_pith_number":"pith:2016:HEUQJFN2IF5HD63OVI3D3IPZQP","target":"graph","payload":{"graph_snapshot":{"paper":{"title":"The surface temperature of Europa","license":"http://arxiv.org/licenses/nonexclusive-distrib/1.0/","headline":"","cross_cats":[],"primary_cat":"astro-ph.EP","authors_text":"Yosef Ashkenazy","submitted_at":"2016-08-26T07:05:05Z","abstract_excerpt":"Previous estimates of the annual mean surface temperature of Jupiter's moon, Europa, neglected the effect of the eccentricity of Jupiter's orbit around the Sun, the effect of the emissivity and heat capacity of Europa's ice, the effect of the eclipse of Europa (i.e., the relative time that Europa is within the shadow of Jupiter), the effect of Jupiter's radiation, and the effect of Europa's internal heating. Other studies concentrated on the diurnal cycle but neglected some of the above factors. In addition, to our knowledge, the seasonal cycle of the surface temperature of Europa was not esti"},"claims":{"count":0,"items":[],"snapshot_sha256":"258153158e38e3291e3d48162225fcdb2d5a3ed65a07baac614ab91432fd4f57"},"source":{"id":"1608.07372","kind":"arxiv","version":6},"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":"2026-05-17T23:44:23Z","supersedes":[],"prev_event":null,"signature":{"signature_status":"signed_v1","algorithm":"ed25519","key_id":"pith-v1-2026-05","public_key_fingerprint":"8d4b5ee74e4693bcd1df2446408b0d54","signature_b64":"sfbrTCw1AVFU6zglT0ZSSs7Qcyhtt9A3uorlU4P50qUqqGLOTNeVEQqWsxoIBm2Y5LmzdAOEpAlQ4Z+8ZKJvCg==","signed_message":"open_graph_event_sha256_bytes","signed_at":"2026-06-22T01:58:24.725813Z"},"content_sha256":"3e62fd4318377657cd68c5eba1599c38c0d04376b47bf6fcdebe0a26e35c43b2","schema_version":"1.0","event_id":"sha256:3e62fd4318377657cd68c5eba1599c38c0d04376b47bf6fcdebe0a26e35c43b2"}],"timestamp_proofs":[],"mirror_hints":[{"mirror_type":"https","name":"Pith Resolver","base_url":"https://pith.science","bundle_url":"https://pith.science/pith/HEUQJFN2IF5HD63OVI3D3IPZQP/bundle.json","state_url":"https://pith.science/pith/HEUQJFN2IF5HD63OVI3D3IPZQP/state.json","well_known_bundle_url":"https://pith.science/.well-known/pith/HEUQJFN2IF5HD63OVI3D3IPZQP/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":"2026-06-22T01:58:24Z","links":{"resolver":"https://pith.science/pith/HEUQJFN2IF5HD63OVI3D3IPZQP","bundle":"https://pith.science/pith/HEUQJFN2IF5HD63OVI3D3IPZQP/bundle.json","state":"https://pith.science/pith/HEUQJFN2IF5HD63OVI3D3IPZQP/state.json","well_known_bundle":"https://pith.science/.well-known/pith/HEUQJFN2IF5HD63OVI3D3IPZQP/bundle.json"},"state":{"state_type":"pith_open_graph_state","state_version":"1.0","pith_number":"pith:2016:HEUQJFN2IF5HD63OVI3D3IPZQP","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":"5c3f148db4e4a5d2decdda7fa89819069aeccf4fcf509717be4b5cb564327c51","cross_cats_sorted":[],"license":"http://arxiv.org/licenses/nonexclusive-distrib/1.0/","primary_cat":"astro-ph.EP","submitted_at":"2016-08-26T07:05:05Z","title_canon_sha256":"f46db6ef967d2cd0c23f75019a229efa46270458fdb8ca89f97ef1476c61ad38"},"schema_version":"1.0","source":{"id":"1608.07372","kind":"arxiv","version":6}},"source_aliases":[{"alias_kind":"arxiv","alias_value":"1608.07372","created_at":"2026-05-17T23:44:23Z"},{"alias_kind":"arxiv_version","alias_value":"1608.07372v6","created_at":"2026-05-17T23:44:23Z"},{"alias_kind":"doi","alias_value":"10.48550/arxiv.1608.07372","created_at":"2026-05-17T23:44:23Z"},{"alias_kind":"pith_short_12","alias_value":"HEUQJFN2IF5H","created_at":"2026-05-18T12:30:19Z"},{"alias_kind":"pith_short_16","alias_value":"HEUQJFN2IF5HD63O","created_at":"2026-05-18T12:30:19Z"},{"alias_kind":"pith_short_8","alias_value":"HEUQJFN2","created_at":"2026-05-18T12:30:19Z"}],"graph_snapshots":[{"event_id":"sha256:3e62fd4318377657cd68c5eba1599c38c0d04376b47bf6fcdebe0a26e35c43b2","target":"graph","created_at":"2026-05-17T23:44:23Z","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":"Previous estimates of the annual mean surface temperature of Jupiter's moon, Europa, neglected the effect of the eccentricity of Jupiter's orbit around the Sun, the effect of the emissivity and heat capacity of Europa's ice, the effect of the eclipse of Europa (i.e., the relative time that Europa is within the shadow of Jupiter), the effect of Jupiter's radiation, and the effect of Europa's internal heating. Other studies concentrated on the diurnal cycle but neglected some of the above factors. In addition, to our knowledge, the seasonal cycle of the surface temperature of Europa was not esti","authors_text":"Yosef Ashkenazy","cross_cats":[],"headline":"","license":"http://arxiv.org/licenses/nonexclusive-distrib/1.0/","primary_cat":"astro-ph.EP","submitted_at":"2016-08-26T07:05:05Z","title":"The surface temperature of Europa"},"references":{"count":0,"internal_anchors":0,"resolved_work":0,"sample":[],"snapshot_sha256":"258153158e38e3291e3d48162225fcdb2d5a3ed65a07baac614ab91432fd4f57"},"source":{"id":"1608.07372","kind":"arxiv","version":6},"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":"sha256:108f3f6d0a20ae7dd79def578455665b7cb3407378833758986d6b0c83c30b92","target":"record","created_at":"2026-05-17T23:44:23Z","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":"5c3f148db4e4a5d2decdda7fa89819069aeccf4fcf509717be4b5cb564327c51","cross_cats_sorted":[],"license":"http://arxiv.org/licenses/nonexclusive-distrib/1.0/","primary_cat":"astro-ph.EP","submitted_at":"2016-08-26T07:05:05Z","title_canon_sha256":"f46db6ef967d2cd0c23f75019a229efa46270458fdb8ca89f97ef1476c61ad38"},"schema_version":"1.0","source":{"id":"1608.07372","kind":"arxiv","version":6}},"canonical_sha256":"39290495ba417a71fb6eaa363da1f983fa06732e21ffd36d73ffeb646df4c393","receipt":{"algorithm":"ed25519","builder_version":"pith-number-builder-2026-05-17-v1","canonical_sha256":"39290495ba417a71fb6eaa363da1f983fa06732e21ffd36d73ffeb646df4c393","first_computed_at":"2026-05-17T23:44:23.193738Z","key_id":"pith-v1-2026-05","kind":"pith_receipt","last_reissued_at":"2026-05-17T23:44:23.193738Z","public_key_fingerprint":"8d4b5ee74e4693bcd1df2446408b0d54","receipt_version":"0.3","signature_b64":"7Z7JQyeuoStBFrkSeYpFBjDWU8ura8hgY1EVyTD/7KJ1Ee4L7nAzKtHt+AglGKTBDmZwCzqN5yyoRU5lzuQ1BQ==","signature_status":"signed_v1","signed_at":"2026-05-17T23:44:23.194391Z","signed_message":"canonical_sha256_bytes"},"source_id":"1608.07372","source_kind":"arxiv","source_version":6}}},"equivocations":[],"invalid_events":[],"applied_event_ids":["sha256:108f3f6d0a20ae7dd79def578455665b7cb3407378833758986d6b0c83c30b92","sha256:3e62fd4318377657cd68c5eba1599c38c0d04376b47bf6fcdebe0a26e35c43b2"],"state_sha256":"486717b58951c680d5b16166a7a0f5956dd9f2a50b7a267aec34122142eb8519"},"bundle_signature":{"signature_status":"signed_v1","algorithm":"ed25519","key_id":"pith-v1-2026-05","public_key_fingerprint":"8d4b5ee74e4693bcd1df2446408b0d54","signature_b64":"XO5rJ1940dDB7K/m78mZbZwZWHIBpUkcGRB8htuKKcqfd44rKtdGl44oUC1nrZ18RY5JsQejtFscAocLcFi6Dw==","signed_message":"bundle_sha256_bytes","signed_at":"2026-06-22T01:58:24.727936Z","bundle_sha256":"c3fdb7ba012340805cb2e63fcbc428e2dbde4f57486c4406924f4ed9b244affb"}}