{"bundle_type":"pith_open_graph_bundle","bundle_version":"1.0","pith_number":"pith:2026:WMUQYP2CER7P6MYSRW3BB2AEE4","short_pith_number":"pith:WMUQYP2C","canonical_record":{"source":{"id":"2606.18336","kind":"arxiv","version":1},"metadata":{"license":"http://creativecommons.org/licenses/by/4.0/","primary_cat":"astro-ph.EP","submitted_at":"2026-06-16T18:00:00Z","cross_cats_sorted":[],"title_canon_sha256":"bcd9cd0dd806e57fa73e0c6eb13b9ac7c6949e4ededc7e9069065092d28c083e","abstract_canon_sha256":"e0161883cb80a18022e42676aa7c1cd1000b09b940eb247b20cc0e249f55e082"},"schema_version":"1.0"},"canonical_sha256":"b3290c3f42247eff33128db610e80427331d6ade13f824ba8e061531cb157143","source":{"kind":"arxiv","id":"2606.18336","version":1},"source_aliases":[{"alias_kind":"arxiv","alias_value":"2606.18336","created_at":"2026-06-19T16:10:58Z"},{"alias_kind":"arxiv_version","alias_value":"2606.18336v1","created_at":"2026-06-19T16:10:58Z"},{"alias_kind":"doi","alias_value":"10.48550/arxiv.2606.18336","created_at":"2026-06-19T16:10:58Z"},{"alias_kind":"pith_short_12","alias_value":"WMUQYP2CER7P","created_at":"2026-06-19T16:10:58Z"},{"alias_kind":"pith_short_16","alias_value":"WMUQYP2CER7P6MYS","created_at":"2026-06-19T16:10:58Z"},{"alias_kind":"pith_short_8","alias_value":"WMUQYP2C","created_at":"2026-06-19T16:10:58Z"}],"events":[{"event_type":"record_created","subject_pith_number":"pith:2026:WMUQYP2CER7P6MYSRW3BB2AEE4","target":"record","payload":{"canonical_record":{"source":{"id":"2606.18336","kind":"arxiv","version":1},"metadata":{"license":"http://creativecommons.org/licenses/by/4.0/","primary_cat":"astro-ph.EP","submitted_at":"2026-06-16T18:00:00Z","cross_cats_sorted":[],"title_canon_sha256":"bcd9cd0dd806e57fa73e0c6eb13b9ac7c6949e4ededc7e9069065092d28c083e","abstract_canon_sha256":"e0161883cb80a18022e42676aa7c1cd1000b09b940eb247b20cc0e249f55e082"},"schema_version":"1.0"},"canonical_sha256":"b3290c3f42247eff33128db610e80427331d6ade13f824ba8e061531cb157143","receipt":{"kind":"pith_receipt","key_id":"pith-v1-2026-05","algorithm":"ed25519","signed_at":"2026-06-19T16:10:58.228288Z","signature_b64":"0iGHFZxfCyPn9SMENW22NI8CeUuR83Lif+5Tc47Tz6vK7Qjagaci9slujrjH8T3jY0AKMzfjxDEIsfUPC+y/Aw==","signed_message":"canonical_sha256_bytes","builder_version":"pith-number-builder-2026-05-17-v1","receipt_version":"0.3","canonical_sha256":"b3290c3f42247eff33128db610e80427331d6ade13f824ba8e061531cb157143","last_reissued_at":"2026-06-19T16:10:58.227934Z","signature_status":"signed_v1","first_computed_at":"2026-06-19T16:10:58.227934Z","public_key_fingerprint":"8d4b5ee74e4693bcd1df2446408b0d54"},"source_kind":"arxiv","source_id":"2606.18336","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":"2026-06-19T16:10:58Z","supersedes":[],"prev_event":null,"signature":{"signature_status":"signed_v1","algorithm":"ed25519","key_id":"pith-v1-2026-05","public_key_fingerprint":"8d4b5ee74e4693bcd1df2446408b0d54","signature_b64":"x6s1PVYfHEtU7KuM7BapGXjujZ1JKRNT5fSSPD+2he+SpZ+6dhkx91zgdOtF4Jw0aJgeB95Tla30iTp87mQECw==","signed_message":"open_graph_event_sha256_bytes","signed_at":"2026-06-27T07:20:20.997851Z"},"content_sha256":"cf72bb6935e1ab0ac8f82679f7a32e1713fd461aa6d6243f19ca27d1f2780f4c","schema_version":"1.0","event_id":"sha256:cf72bb6935e1ab0ac8f82679f7a32e1713fd461aa6d6243f19ca27d1f2780f4c"},{"event_type":"graph_snapshot","subject_pith_number":"pith:2026:WMUQYP2CER7P6MYSRW3BB2AEE4","target":"graph","payload":{"graph_snapshot":{"paper":{"title":"The Maximum Density of a Collisionally-Produced Planet is A Function of its Mass and Orbital Period","license":"http://creativecommons.org/licenses/by/4.0/","headline":"","cross_cats":[],"primary_cat":"astro-ph.EP","authors_text":"Darryl Seligman, Madison Brady","submitted_at":"2026-06-16T18:00:00Z","abstract_excerpt":"There are many different theoretical explanations for the formation of high-density Mercury-like planets, but concrete evidence for any of these formation mechanisms remains elusive. A popular explanation for dense planets is the collisional hypothesis, which states that iron-rich planets can be formed as the products of high-energy, mantle-stripping impacts. Planetesimal collision simulations predict that higher-velocity collisions can form higher-density planets. Motivated by the characteristics of the high-density, short-period (P=0.3d) GJ 367b, we study the results of previously-published "},"claims":{"count":0,"items":[],"snapshot_sha256":"258153158e38e3291e3d48162225fcdb2d5a3ed65a07baac614ab91432fd4f57"},"source":{"id":"2606.18336","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/2606.18336/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":"2026-06-19T16:10:58Z","supersedes":[],"prev_event":null,"signature":{"signature_status":"signed_v1","algorithm":"ed25519","key_id":"pith-v1-2026-05","public_key_fingerprint":"8d4b5ee74e4693bcd1df2446408b0d54","signature_b64":"6HwSi9BthPgWMGZRMUi6n9HrnwD42Z98c4djkz+IpO+OaPE0InyvOU2CbDZ3IiELHuoT/MbmSQ4EA3d69hWPBQ==","signed_message":"open_graph_event_sha256_bytes","signed_at":"2026-06-27T07:20:20.998211Z"},"content_sha256":"6e8c3f9386efe8b0951ef5072557bb868c13ae2d3f176d891c2d18528c83dda8","schema_version":"1.0","event_id":"sha256:6e8c3f9386efe8b0951ef5072557bb868c13ae2d3f176d891c2d18528c83dda8"}],"timestamp_proofs":[],"mirror_hints":[{"mirror_type":"https","name":"Pith Resolver","base_url":"https://pith.science","bundle_url":"https://pith.science/pith/WMUQYP2CER7P6MYSRW3BB2AEE4/bundle.json","state_url":"https://pith.science/pith/WMUQYP2CER7P6MYSRW3BB2AEE4/state.json","well_known_bundle_url":"https://pith.science/.well-known/pith/WMUQYP2CER7P6MYSRW3BB2AEE4/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":"2026-06-27T07:20:20Z","links":{"resolver":"https://pith.science/pith/WMUQYP2CER7P6MYSRW3BB2AEE4","bundle":"https://pith.science/pith/WMUQYP2CER7P6MYSRW3BB2AEE4/bundle.json","state":"https://pith.science/pith/WMUQYP2CER7P6MYSRW3BB2AEE4/state.json","well_known_bundle":"https://pith.science/.well-known/pith/WMUQYP2CER7P6MYSRW3BB2AEE4/bundle.json"},"state":{"state_type":"pith_open_graph_state","state_version":"1.0","pith_number":"pith:2026:WMUQYP2CER7P6MYSRW3BB2AEE4","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":"e0161883cb80a18022e42676aa7c1cd1000b09b940eb247b20cc0e249f55e082","cross_cats_sorted":[],"license":"http://creativecommons.org/licenses/by/4.0/","primary_cat":"astro-ph.EP","submitted_at":"2026-06-16T18:00:00Z","title_canon_sha256":"bcd9cd0dd806e57fa73e0c6eb13b9ac7c6949e4ededc7e9069065092d28c083e"},"schema_version":"1.0","source":{"id":"2606.18336","kind":"arxiv","version":1}},"source_aliases":[{"alias_kind":"arxiv","alias_value":"2606.18336","created_at":"2026-06-19T16:10:58Z"},{"alias_kind":"arxiv_version","alias_value":"2606.18336v1","created_at":"2026-06-19T16:10:58Z"},{"alias_kind":"doi","alias_value":"10.48550/arxiv.2606.18336","created_at":"2026-06-19T16:10:58Z"},{"alias_kind":"pith_short_12","alias_value":"WMUQYP2CER7P","created_at":"2026-06-19T16:10:58Z"},{"alias_kind":"pith_short_16","alias_value":"WMUQYP2CER7P6MYS","created_at":"2026-06-19T16:10:58Z"},{"alias_kind":"pith_short_8","alias_value":"WMUQYP2C","created_at":"2026-06-19T16:10:58Z"}],"graph_snapshots":[{"event_id":"sha256:6e8c3f9386efe8b0951ef5072557bb868c13ae2d3f176d891c2d18528c83dda8","target":"graph","created_at":"2026-06-19T16:10:58Z","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/2606.18336/integrity.json","findings":[],"snapshot_sha256":"c28c3603d3b5d939e8dc4c7e95fa8dfce3d595e45f758748cecf8e644a296938","summary":{"advisory":0,"by_detector":{},"critical":0,"informational":0}},"paper":{"abstract_excerpt":"There are many different theoretical explanations for the formation of high-density Mercury-like planets, but concrete evidence for any of these formation mechanisms remains elusive. A popular explanation for dense planets is the collisional hypothesis, which states that iron-rich planets can be formed as the products of high-energy, mantle-stripping impacts. Planetesimal collision simulations predict that higher-velocity collisions can form higher-density planets. Motivated by the characteristics of the high-density, short-period (P=0.3d) GJ 367b, we study the results of previously-published ","authors_text":"Darryl Seligman, Madison Brady","cross_cats":[],"headline":"","license":"http://creativecommons.org/licenses/by/4.0/","primary_cat":"astro-ph.EP","submitted_at":"2026-06-16T18:00:00Z","title":"The Maximum Density of a Collisionally-Produced Planet is A Function of its Mass and Orbital Period"},"references":{"count":0,"internal_anchors":0,"resolved_work":0,"sample":[],"snapshot_sha256":"258153158e38e3291e3d48162225fcdb2d5a3ed65a07baac614ab91432fd4f57"},"source":{"id":"2606.18336","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:cf72bb6935e1ab0ac8f82679f7a32e1713fd461aa6d6243f19ca27d1f2780f4c","target":"record","created_at":"2026-06-19T16:10:58Z","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":"e0161883cb80a18022e42676aa7c1cd1000b09b940eb247b20cc0e249f55e082","cross_cats_sorted":[],"license":"http://creativecommons.org/licenses/by/4.0/","primary_cat":"astro-ph.EP","submitted_at":"2026-06-16T18:00:00Z","title_canon_sha256":"bcd9cd0dd806e57fa73e0c6eb13b9ac7c6949e4ededc7e9069065092d28c083e"},"schema_version":"1.0","source":{"id":"2606.18336","kind":"arxiv","version":1}},"canonical_sha256":"b3290c3f42247eff33128db610e80427331d6ade13f824ba8e061531cb157143","receipt":{"algorithm":"ed25519","builder_version":"pith-number-builder-2026-05-17-v1","canonical_sha256":"b3290c3f42247eff33128db610e80427331d6ade13f824ba8e061531cb157143","first_computed_at":"2026-06-19T16:10:58.227934Z","key_id":"pith-v1-2026-05","kind":"pith_receipt","last_reissued_at":"2026-06-19T16:10:58.227934Z","public_key_fingerprint":"8d4b5ee74e4693bcd1df2446408b0d54","receipt_version":"0.3","signature_b64":"0iGHFZxfCyPn9SMENW22NI8CeUuR83Lif+5Tc47Tz6vK7Qjagaci9slujrjH8T3jY0AKMzfjxDEIsfUPC+y/Aw==","signature_status":"signed_v1","signed_at":"2026-06-19T16:10:58.228288Z","signed_message":"canonical_sha256_bytes"},"source_id":"2606.18336","source_kind":"arxiv","source_version":1}}},"equivocations":[],"invalid_events":[],"applied_event_ids":["sha256:cf72bb6935e1ab0ac8f82679f7a32e1713fd461aa6d6243f19ca27d1f2780f4c","sha256:6e8c3f9386efe8b0951ef5072557bb868c13ae2d3f176d891c2d18528c83dda8"],"state_sha256":"be94078970a63756081e991496feb5f719adc0e98c10a477634f79e1f0a7c260"},"bundle_signature":{"signature_status":"signed_v1","algorithm":"ed25519","key_id":"pith-v1-2026-05","public_key_fingerprint":"8d4b5ee74e4693bcd1df2446408b0d54","signature_b64":"Lz2A/s8RdbR9zPUUTGu4ASCS42gK41DezytCVxZ/U9pDs584fX2th8piXLQYxcU3Zr5zip6Xj5miKlXRG7dlBw==","signed_message":"bundle_sha256_bytes","signed_at":"2026-06-27T07:20:21.000145Z","bundle_sha256":"0759c93eb499135becfc9b7eec9c8f410e3849b70802d5efeb36271832c220ca"}}