{"bundle_type":"pith_open_graph_bundle","bundle_version":"1.0","pith_number":"pith:2011:R2HYIH3ZTQMWRGFDRNG2ACHOPR","short_pith_number":"pith:R2HYIH3Z","canonical_record":{"source":{"id":"1106.2479","kind":"arxiv","version":1},"metadata":{"license":"http://arxiv.org/licenses/nonexclusive-distrib/1.0/","primary_cat":"astro-ph.EP","submitted_at":"2011-06-13T16:16:32Z","cross_cats_sorted":[],"title_canon_sha256":"78fba53a5432126e5631888f2b6b652d1c8a9f2d1eb60857be40eafbabae4930","abstract_canon_sha256":"5dc717f20b29d23f014136180c1035948deb7250841d867da344a897baada0fe"},"schema_version":"1.0"},"canonical_sha256":"8e8f841f799c196898a38b4da008ee7c62039e125f524cd0fc53cd4a95295abd","source":{"kind":"arxiv","id":"1106.2479","version":1},"source_aliases":[{"alias_kind":"arxiv","alias_value":"1106.2479","created_at":"2026-05-18T02:01:39Z"},{"alias_kind":"arxiv_version","alias_value":"1106.2479v1","created_at":"2026-05-18T02:01:39Z"},{"alias_kind":"doi","alias_value":"10.48550/arxiv.1106.2479","created_at":"2026-05-18T02:01:39Z"},{"alias_kind":"pith_short_12","alias_value":"R2HYIH3ZTQMW","created_at":"2026-05-18T12:26:39Z"},{"alias_kind":"pith_short_16","alias_value":"R2HYIH3ZTQMWRGFD","created_at":"2026-05-18T12:26:39Z"},{"alias_kind":"pith_short_8","alias_value":"R2HYIH3Z","created_at":"2026-05-18T12:26:39Z"}],"events":[{"event_type":"record_created","subject_pith_number":"pith:2011:R2HYIH3ZTQMWRGFDRNG2ACHOPR","target":"record","payload":{"canonical_record":{"source":{"id":"1106.2479","kind":"arxiv","version":1},"metadata":{"license":"http://arxiv.org/licenses/nonexclusive-distrib/1.0/","primary_cat":"astro-ph.EP","submitted_at":"2011-06-13T16:16:32Z","cross_cats_sorted":[],"title_canon_sha256":"78fba53a5432126e5631888f2b6b652d1c8a9f2d1eb60857be40eafbabae4930","abstract_canon_sha256":"5dc717f20b29d23f014136180c1035948deb7250841d867da344a897baada0fe"},"schema_version":"1.0"},"canonical_sha256":"8e8f841f799c196898a38b4da008ee7c62039e125f524cd0fc53cd4a95295abd","receipt":{"kind":"pith_receipt","key_id":"pith-v1-2026-05","algorithm":"ed25519","signed_at":"2026-05-18T02:01:39.325976Z","signature_b64":"w+NfW2udXk82zzfiBHk8mvW/5gdBao0Rqua7KOSrjJRFo9W3GyDMOOTXKFY6+a/05Vi8WY860O9ORYPMC+E/CQ==","signed_message":"canonical_sha256_bytes","builder_version":"pith-number-builder-2026-05-17-v1","receipt_version":"0.3","canonical_sha256":"8e8f841f799c196898a38b4da008ee7c62039e125f524cd0fc53cd4a95295abd","last_reissued_at":"2026-05-18T02:01:39.325621Z","signature_status":"signed_v1","first_computed_at":"2026-05-18T02:01:39.325621Z","public_key_fingerprint":"8d4b5ee74e4693bcd1df2446408b0d54"},"source_kind":"arxiv","source_id":"1106.2479","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":"2026-05-18T02:01:39Z","supersedes":[],"prev_event":null,"signature":{"signature_status":"signed_v1","algorithm":"ed25519","key_id":"pith-v1-2026-05","public_key_fingerprint":"8d4b5ee74e4693bcd1df2446408b0d54","signature_b64":"9VcKueifNqBhqcY3Ha9jY9+VRwHAxz1IWuahwdAmRR8CHX6s3tZspqjkTHfngXN2jAEj6/cwFfEN/+CKr40bDw==","signed_message":"open_graph_event_sha256_bytes","signed_at":"2026-07-07T04:54:07.917743Z"},"content_sha256":"bdc9c84d46bb44bd9cf64e95361b4cae63a3ad11fe960da4f59960c26c8221e1","schema_version":"1.0","event_id":"sha256:bdc9c84d46bb44bd9cf64e95361b4cae63a3ad11fe960da4f59960c26c8221e1"},{"event_type":"graph_snapshot","subject_pith_number":"pith:2011:R2HYIH3ZTQMWRGFDRNG2ACHOPR","target":"graph","payload":{"graph_snapshot":{"paper":{"title":"Size of the group IVA iron meteorite core: Constraints from the age and composition of Muonionalusta","license":"http://arxiv.org/licenses/nonexclusive-distrib/1.0/","headline":"","cross_cats":[],"primary_cat":"astro-ph.EP","authors_text":"Nicholas A. Moskovitz, Richard J. Walker","submitted_at":"2011-06-13T16:16:32Z","abstract_excerpt":"The group IVA fractionally crystallized iron meteorites display a diverse range of metallographic cooling rates. These have been attributed to their formation in a metallic core, approximately 150 km in radius, that cooled to crystallization in the absence of any appreciable insulating mantle. Here we build upon this formation model by incorporating several new constraints. These include (i) a recent U-Pb radiometric closure age of <2.5 Myr after solar system formation for the group IVA iron Muonionalusta, (ii) new measurements and modeling of highly siderophile element compositions for a suit"},"claims":{"count":0,"items":[],"snapshot_sha256":"258153158e38e3291e3d48162225fcdb2d5a3ed65a07baac614ab91432fd4f57"},"source":{"id":"1106.2479","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":"2026-05-18T02:01:39Z","supersedes":[],"prev_event":null,"signature":{"signature_status":"signed_v1","algorithm":"ed25519","key_id":"pith-v1-2026-05","public_key_fingerprint":"8d4b5ee74e4693bcd1df2446408b0d54","signature_b64":"AkH5MMwSkzGb+TPd/fAjRnIk4iZwSM3PlqgT2kA6BAP9/bntnmhFTHG7BMihyEmC3O5az1qUp/xe1L6687cwBA==","signed_message":"open_graph_event_sha256_bytes","signed_at":"2026-07-07T04:54:07.918098Z"},"content_sha256":"f1648ff39c39aad649c8cc0c98f061c9335e0273317532b1d4d30e9d6c03d7cb","schema_version":"1.0","event_id":"sha256:f1648ff39c39aad649c8cc0c98f061c9335e0273317532b1d4d30e9d6c03d7cb"}],"timestamp_proofs":[],"mirror_hints":[{"mirror_type":"https","name":"Pith Resolver","base_url":"https://pith.science","bundle_url":"https://pith.science/pith/R2HYIH3ZTQMWRGFDRNG2ACHOPR/bundle.json","state_url":"https://pith.science/pith/R2HYIH3ZTQMWRGFDRNG2ACHOPR/state.json","well_known_bundle_url":"https://pith.science/.well-known/pith/R2HYIH3ZTQMWRGFDRNG2ACHOPR/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":"2026-07-07T04:54:07Z","links":{"resolver":"https://pith.science/pith/R2HYIH3ZTQMWRGFDRNG2ACHOPR","bundle":"https://pith.science/pith/R2HYIH3ZTQMWRGFDRNG2ACHOPR/bundle.json","state":"https://pith.science/pith/R2HYIH3ZTQMWRGFDRNG2ACHOPR/state.json","well_known_bundle":"https://pith.science/.well-known/pith/R2HYIH3ZTQMWRGFDRNG2ACHOPR/bundle.json"},"state":{"state_type":"pith_open_graph_state","state_version":"1.0","pith_number":"pith:2011:R2HYIH3ZTQMWRGFDRNG2ACHOPR","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":"5dc717f20b29d23f014136180c1035948deb7250841d867da344a897baada0fe","cross_cats_sorted":[],"license":"http://arxiv.org/licenses/nonexclusive-distrib/1.0/","primary_cat":"astro-ph.EP","submitted_at":"2011-06-13T16:16:32Z","title_canon_sha256":"78fba53a5432126e5631888f2b6b652d1c8a9f2d1eb60857be40eafbabae4930"},"schema_version":"1.0","source":{"id":"1106.2479","kind":"arxiv","version":1}},"source_aliases":[{"alias_kind":"arxiv","alias_value":"1106.2479","created_at":"2026-05-18T02:01:39Z"},{"alias_kind":"arxiv_version","alias_value":"1106.2479v1","created_at":"2026-05-18T02:01:39Z"},{"alias_kind":"doi","alias_value":"10.48550/arxiv.1106.2479","created_at":"2026-05-18T02:01:39Z"},{"alias_kind":"pith_short_12","alias_value":"R2HYIH3ZTQMW","created_at":"2026-05-18T12:26:39Z"},{"alias_kind":"pith_short_16","alias_value":"R2HYIH3ZTQMWRGFD","created_at":"2026-05-18T12:26:39Z"},{"alias_kind":"pith_short_8","alias_value":"R2HYIH3Z","created_at":"2026-05-18T12:26:39Z"}],"graph_snapshots":[{"event_id":"sha256:f1648ff39c39aad649c8cc0c98f061c9335e0273317532b1d4d30e9d6c03d7cb","target":"graph","created_at":"2026-05-18T02:01:39Z","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 group IVA fractionally crystallized iron meteorites display a diverse range of metallographic cooling rates. These have been attributed to their formation in a metallic core, approximately 150 km in radius, that cooled to crystallization in the absence of any appreciable insulating mantle. Here we build upon this formation model by incorporating several new constraints. These include (i) a recent U-Pb radiometric closure age of <2.5 Myr after solar system formation for the group IVA iron Muonionalusta, (ii) new measurements and modeling of highly siderophile element compositions for a suit","authors_text":"Nicholas A. Moskovitz, Richard J. Walker","cross_cats":[],"headline":"","license":"http://arxiv.org/licenses/nonexclusive-distrib/1.0/","primary_cat":"astro-ph.EP","submitted_at":"2011-06-13T16:16:32Z","title":"Size of the group IVA iron meteorite core: Constraints from the age and composition of Muonionalusta"},"references":{"count":0,"internal_anchors":0,"resolved_work":0,"sample":[],"snapshot_sha256":"258153158e38e3291e3d48162225fcdb2d5a3ed65a07baac614ab91432fd4f57"},"source":{"id":"1106.2479","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:bdc9c84d46bb44bd9cf64e95361b4cae63a3ad11fe960da4f59960c26c8221e1","target":"record","created_at":"2026-05-18T02:01:39Z","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":"5dc717f20b29d23f014136180c1035948deb7250841d867da344a897baada0fe","cross_cats_sorted":[],"license":"http://arxiv.org/licenses/nonexclusive-distrib/1.0/","primary_cat":"astro-ph.EP","submitted_at":"2011-06-13T16:16:32Z","title_canon_sha256":"78fba53a5432126e5631888f2b6b652d1c8a9f2d1eb60857be40eafbabae4930"},"schema_version":"1.0","source":{"id":"1106.2479","kind":"arxiv","version":1}},"canonical_sha256":"8e8f841f799c196898a38b4da008ee7c62039e125f524cd0fc53cd4a95295abd","receipt":{"algorithm":"ed25519","builder_version":"pith-number-builder-2026-05-17-v1","canonical_sha256":"8e8f841f799c196898a38b4da008ee7c62039e125f524cd0fc53cd4a95295abd","first_computed_at":"2026-05-18T02:01:39.325621Z","key_id":"pith-v1-2026-05","kind":"pith_receipt","last_reissued_at":"2026-05-18T02:01:39.325621Z","public_key_fingerprint":"8d4b5ee74e4693bcd1df2446408b0d54","receipt_version":"0.3","signature_b64":"w+NfW2udXk82zzfiBHk8mvW/5gdBao0Rqua7KOSrjJRFo9W3GyDMOOTXKFY6+a/05Vi8WY860O9ORYPMC+E/CQ==","signature_status":"signed_v1","signed_at":"2026-05-18T02:01:39.325976Z","signed_message":"canonical_sha256_bytes"},"source_id":"1106.2479","source_kind":"arxiv","source_version":1}}},"equivocations":[],"invalid_events":[],"applied_event_ids":["sha256:bdc9c84d46bb44bd9cf64e95361b4cae63a3ad11fe960da4f59960c26c8221e1","sha256:f1648ff39c39aad649c8cc0c98f061c9335e0273317532b1d4d30e9d6c03d7cb"],"state_sha256":"fa4f4920edf5557bcafc82751f60cae5742103958cbf06a3d0eb8b225131ca7c"},"bundle_signature":{"signature_status":"signed_v1","algorithm":"ed25519","key_id":"pith-v1-2026-05","public_key_fingerprint":"8d4b5ee74e4693bcd1df2446408b0d54","signature_b64":"yDpoghQlC/g8WcnHlLphAJz1CeZYrKDbs90vrhSqZA7dqq2DqzJQH3WFy2kuoLqZ1U9OL5E8tOrg0TODWXQeCg==","signed_message":"bundle_sha256_bytes","signed_at":"2026-07-07T04:54:07.920154Z","bundle_sha256":"2aa9de1c1d7c991ef1250ae58da36ac096c5301069d3de526f9d1cabb6483b31"}}