{"bundle_type":"pith_open_graph_bundle","bundle_version":"1.0","pith_number":"pith:2014:4WOSDS2OXQD5DD4WPPUOJ5HD3A","short_pith_number":"pith:4WOSDS2O","canonical_record":{"source":{"id":"1407.2568","kind":"arxiv","version":1},"metadata":{"license":"http://arxiv.org/licenses/nonexclusive-distrib/1.0/","primary_cat":"astro-ph.EP","submitted_at":"2014-07-09T17:35:39Z","cross_cats_sorted":[],"title_canon_sha256":"96fd9fe25c114ed97e33a0b0a67390bc2d10c83ba3b2113edd3ac965a5b57cd1","abstract_canon_sha256":"c1725984b00f0195944da35b4cb9baa629be20fc9de639771eb236f024c597bb"},"schema_version":"1.0"},"canonical_sha256":"e59d21cb4ebc07d18f967be8e4f4e3d8093810e9f548f9034238bd3852aa6482","source":{"kind":"arxiv","id":"1407.2568","version":1},"source_aliases":[{"alias_kind":"arxiv","alias_value":"1407.2568","created_at":"2026-05-18T01:42:38Z"},{"alias_kind":"arxiv_version","alias_value":"1407.2568v1","created_at":"2026-05-18T01:42:38Z"},{"alias_kind":"doi","alias_value":"10.48550/arxiv.1407.2568","created_at":"2026-05-18T01:42:38Z"},{"alias_kind":"pith_short_12","alias_value":"4WOSDS2OXQD5","created_at":"2026-05-18T12:28:14Z"},{"alias_kind":"pith_short_16","alias_value":"4WOSDS2OXQD5DD4W","created_at":"2026-05-18T12:28:14Z"},{"alias_kind":"pith_short_8","alias_value":"4WOSDS2O","created_at":"2026-05-18T12:28:14Z"}],"events":[{"event_type":"record_created","subject_pith_number":"pith:2014:4WOSDS2OXQD5DD4WPPUOJ5HD3A","target":"record","payload":{"canonical_record":{"source":{"id":"1407.2568","kind":"arxiv","version":1},"metadata":{"license":"http://arxiv.org/licenses/nonexclusive-distrib/1.0/","primary_cat":"astro-ph.EP","submitted_at":"2014-07-09T17:35:39Z","cross_cats_sorted":[],"title_canon_sha256":"96fd9fe25c114ed97e33a0b0a67390bc2d10c83ba3b2113edd3ac965a5b57cd1","abstract_canon_sha256":"c1725984b00f0195944da35b4cb9baa629be20fc9de639771eb236f024c597bb"},"schema_version":"1.0"},"canonical_sha256":"e59d21cb4ebc07d18f967be8e4f4e3d8093810e9f548f9034238bd3852aa6482","receipt":{"kind":"pith_receipt","key_id":"pith-v1-2026-05","algorithm":"ed25519","signed_at":"2026-05-18T01:42:38.505899Z","signature_b64":"noaV+00Z+pfH+ELTAAOJ+4F/nhmsflX1iUNSXQd0oOcOaN+T5u7+0yGnIFwqRNSmHWTO0SnPklTW37MP4v0lDg==","signed_message":"canonical_sha256_bytes","builder_version":"pith-number-builder-2026-05-17-v1","receipt_version":"0.3","canonical_sha256":"e59d21cb4ebc07d18f967be8e4f4e3d8093810e9f548f9034238bd3852aa6482","last_reissued_at":"2026-05-18T01:42:38.505286Z","signature_status":"signed_v1","first_computed_at":"2026-05-18T01:42:38.505286Z","public_key_fingerprint":"8d4b5ee74e4693bcd1df2446408b0d54"},"source_kind":"arxiv","source_id":"1407.2568","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":"2026-05-18T01:42:38Z","supersedes":[],"prev_event":null,"signature":{"signature_status":"signed_v1","algorithm":"ed25519","key_id":"pith-v1-2026-05","public_key_fingerprint":"8d4b5ee74e4693bcd1df2446408b0d54","signature_b64":"IffzxfUi+FBu+XqRtkCHIL1EroaLl6NonqdbL1v++S5JbSMJLBfYUfSipjRBdZphbaMD8KdQAFLigIxkHQaMCw==","signed_message":"open_graph_event_sha256_bytes","signed_at":"2026-05-19T23:45:08.880240Z"},"content_sha256":"b19995a304869637023846980d5fdfe6f960e92ad4321d965f094c256f54897c","schema_version":"1.0","event_id":"sha256:b19995a304869637023846980d5fdfe6f960e92ad4321d965f094c256f54897c"},{"event_type":"graph_snapshot","subject_pith_number":"pith:2014:4WOSDS2OXQD5DD4WPPUOJ5HD3A","target":"graph","payload":{"graph_snapshot":{"paper":{"title":"The measured compositions of Uranus and Neptune from their formation on the CO iceline","license":"http://arxiv.org/licenses/nonexclusive-distrib/1.0/","headline":"","cross_cats":[],"primary_cat":"astro-ph.EP","authors_text":"J.I. Lunine, J.-M. Petit, M. Ali-Dib, O. Mousis","submitted_at":"2014-07-09T17:35:39Z","abstract_excerpt":"The formation mechanisms of the ice giants Uranus and Neptune, and the origin of their elemental and isotopic compositions, have long been debated. The density of solids in the outer protosolar nebula is too low to explain their formation, and spectroscopic observations show that both planets are highly enriched in carbon, very poor in nitrogen, and the ices from which they originally formed might had deuterium-to-hydrogen ratios lower than the predicted cometary value, unexplained properties observed in no other planets. Here we show that all these properties can be explained naturally if Ura"},"claims":{"count":0,"items":[],"snapshot_sha256":"258153158e38e3291e3d48162225fcdb2d5a3ed65a07baac614ab91432fd4f57"},"source":{"id":"1407.2568","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":"2026-05-18T01:42:38Z","supersedes":[],"prev_event":null,"signature":{"signature_status":"signed_v1","algorithm":"ed25519","key_id":"pith-v1-2026-05","public_key_fingerprint":"8d4b5ee74e4693bcd1df2446408b0d54","signature_b64":"AvTCefQnjroQa/WmEVtxBWy2dwRJxy7eaGbVQwrD9zrFsDXpuWxoAj2u9c8vtQYLbyYy2FdDGqEpKbWUF86gCQ==","signed_message":"open_graph_event_sha256_bytes","signed_at":"2026-05-19T23:45:08.880958Z"},"content_sha256":"8b16ec2b6adbf6d3007a900a8e62000779aa9ac1417248bc292e78d2835433e4","schema_version":"1.0","event_id":"sha256:8b16ec2b6adbf6d3007a900a8e62000779aa9ac1417248bc292e78d2835433e4"}],"timestamp_proofs":[],"mirror_hints":[{"mirror_type":"https","name":"Pith Resolver","base_url":"https://pith.science","bundle_url":"https://pith.science/pith/4WOSDS2OXQD5DD4WPPUOJ5HD3A/bundle.json","state_url":"https://pith.science/pith/4WOSDS2OXQD5DD4WPPUOJ5HD3A/state.json","well_known_bundle_url":"https://pith.science/.well-known/pith/4WOSDS2OXQD5DD4WPPUOJ5HD3A/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":"2026-05-19T23:45:08Z","links":{"resolver":"https://pith.science/pith/4WOSDS2OXQD5DD4WPPUOJ5HD3A","bundle":"https://pith.science/pith/4WOSDS2OXQD5DD4WPPUOJ5HD3A/bundle.json","state":"https://pith.science/pith/4WOSDS2OXQD5DD4WPPUOJ5HD3A/state.json","well_known_bundle":"https://pith.science/.well-known/pith/4WOSDS2OXQD5DD4WPPUOJ5HD3A/bundle.json"},"state":{"state_type":"pith_open_graph_state","state_version":"1.0","pith_number":"pith:2014:4WOSDS2OXQD5DD4WPPUOJ5HD3A","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":"c1725984b00f0195944da35b4cb9baa629be20fc9de639771eb236f024c597bb","cross_cats_sorted":[],"license":"http://arxiv.org/licenses/nonexclusive-distrib/1.0/","primary_cat":"astro-ph.EP","submitted_at":"2014-07-09T17:35:39Z","title_canon_sha256":"96fd9fe25c114ed97e33a0b0a67390bc2d10c83ba3b2113edd3ac965a5b57cd1"},"schema_version":"1.0","source":{"id":"1407.2568","kind":"arxiv","version":1}},"source_aliases":[{"alias_kind":"arxiv","alias_value":"1407.2568","created_at":"2026-05-18T01:42:38Z"},{"alias_kind":"arxiv_version","alias_value":"1407.2568v1","created_at":"2026-05-18T01:42:38Z"},{"alias_kind":"doi","alias_value":"10.48550/arxiv.1407.2568","created_at":"2026-05-18T01:42:38Z"},{"alias_kind":"pith_short_12","alias_value":"4WOSDS2OXQD5","created_at":"2026-05-18T12:28:14Z"},{"alias_kind":"pith_short_16","alias_value":"4WOSDS2OXQD5DD4W","created_at":"2026-05-18T12:28:14Z"},{"alias_kind":"pith_short_8","alias_value":"4WOSDS2O","created_at":"2026-05-18T12:28:14Z"}],"graph_snapshots":[{"event_id":"sha256:8b16ec2b6adbf6d3007a900a8e62000779aa9ac1417248bc292e78d2835433e4","target":"graph","created_at":"2026-05-18T01:42:38Z","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":"The formation mechanisms of the ice giants Uranus and Neptune, and the origin of their elemental and isotopic compositions, have long been debated. The density of solids in the outer protosolar nebula is too low to explain their formation, and spectroscopic observations show that both planets are highly enriched in carbon, very poor in nitrogen, and the ices from which they originally formed might had deuterium-to-hydrogen ratios lower than the predicted cometary value, unexplained properties observed in no other planets. Here we show that all these properties can be explained naturally if Ura","authors_text":"J.I. Lunine, J.-M. Petit, M. Ali-Dib, O. Mousis","cross_cats":[],"headline":"","license":"http://arxiv.org/licenses/nonexclusive-distrib/1.0/","primary_cat":"astro-ph.EP","submitted_at":"2014-07-09T17:35:39Z","title":"The measured compositions of Uranus and Neptune from their formation on the CO iceline"},"references":{"count":0,"internal_anchors":0,"resolved_work":0,"sample":[],"snapshot_sha256":"258153158e38e3291e3d48162225fcdb2d5a3ed65a07baac614ab91432fd4f57"},"source":{"id":"1407.2568","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:b19995a304869637023846980d5fdfe6f960e92ad4321d965f094c256f54897c","target":"record","created_at":"2026-05-18T01:42:38Z","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":"c1725984b00f0195944da35b4cb9baa629be20fc9de639771eb236f024c597bb","cross_cats_sorted":[],"license":"http://arxiv.org/licenses/nonexclusive-distrib/1.0/","primary_cat":"astro-ph.EP","submitted_at":"2014-07-09T17:35:39Z","title_canon_sha256":"96fd9fe25c114ed97e33a0b0a67390bc2d10c83ba3b2113edd3ac965a5b57cd1"},"schema_version":"1.0","source":{"id":"1407.2568","kind":"arxiv","version":1}},"canonical_sha256":"e59d21cb4ebc07d18f967be8e4f4e3d8093810e9f548f9034238bd3852aa6482","receipt":{"algorithm":"ed25519","builder_version":"pith-number-builder-2026-05-17-v1","canonical_sha256":"e59d21cb4ebc07d18f967be8e4f4e3d8093810e9f548f9034238bd3852aa6482","first_computed_at":"2026-05-18T01:42:38.505286Z","key_id":"pith-v1-2026-05","kind":"pith_receipt","last_reissued_at":"2026-05-18T01:42:38.505286Z","public_key_fingerprint":"8d4b5ee74e4693bcd1df2446408b0d54","receipt_version":"0.3","signature_b64":"noaV+00Z+pfH+ELTAAOJ+4F/nhmsflX1iUNSXQd0oOcOaN+T5u7+0yGnIFwqRNSmHWTO0SnPklTW37MP4v0lDg==","signature_status":"signed_v1","signed_at":"2026-05-18T01:42:38.505899Z","signed_message":"canonical_sha256_bytes"},"source_id":"1407.2568","source_kind":"arxiv","source_version":1}}},"equivocations":[],"invalid_events":[],"applied_event_ids":["sha256:b19995a304869637023846980d5fdfe6f960e92ad4321d965f094c256f54897c","sha256:8b16ec2b6adbf6d3007a900a8e62000779aa9ac1417248bc292e78d2835433e4"],"state_sha256":"97b380bc50f19101a2588d782a69b87a8bbd552b3c0b2676e9cc2f44b256ae96"},"bundle_signature":{"signature_status":"signed_v1","algorithm":"ed25519","key_id":"pith-v1-2026-05","public_key_fingerprint":"8d4b5ee74e4693bcd1df2446408b0d54","signature_b64":"liPkyCc2pjkz18h1Z42THuCt1JnGCe9tnFRMysYeBJ2WX5qJjxRmjZA/DpB4Kb2L64m/nMIsfvEKzixPGAuICA==","signed_message":"bundle_sha256_bytes","signed_at":"2026-05-19T23:45:08.885806Z","bundle_sha256":"00bc2eefe203543979556dfa4cfd6770d680045e72f8b5a2d1ae7c31cbc8c415"}}