{"bundle_type":"pith_open_graph_bundle","bundle_version":"1.0","pith_number":"pith:2016:QPSIPI3P2ALG6TCBBAFP7ODJ47","short_pith_number":"pith:QPSIPI3P","canonical_record":{"source":{"id":"1604.06129","kind":"arxiv","version":2},"metadata":{"license":"http://arxiv.org/licenses/nonexclusive-distrib/1.0/","primary_cat":"astro-ph.EP","submitted_at":"2016-04-20T21:49:48Z","cross_cats_sorted":[],"title_canon_sha256":"68afcbd08bc318c1ea89dd9976fa48e7020896628764db4051490c31bd70f3cc","abstract_canon_sha256":"25c855fce3f0cd9239b9216b02e82d8ea598809d92a15a79552438d0431ca5cf"},"schema_version":"1.0"},"canonical_sha256":"83e487a36fd0166f4c41080affb869e7f4f4cd1c56e4353454ddad5f7d1a04fe","source":{"kind":"arxiv","id":"1604.06129","version":2},"source_aliases":[{"alias_kind":"arxiv","alias_value":"1604.06129","created_at":"2026-05-18T00:53:12Z"},{"alias_kind":"arxiv_version","alias_value":"1604.06129v2","created_at":"2026-05-18T00:53:12Z"},{"alias_kind":"doi","alias_value":"10.48550/arxiv.1604.06129","created_at":"2026-05-18T00:53:12Z"},{"alias_kind":"pith_short_12","alias_value":"QPSIPI3P2ALG","created_at":"2026-05-18T12:30:41Z"},{"alias_kind":"pith_short_16","alias_value":"QPSIPI3P2ALG6TCB","created_at":"2026-05-18T12:30:41Z"},{"alias_kind":"pith_short_8","alias_value":"QPSIPI3P","created_at":"2026-05-18T12:30:41Z"}],"events":[{"event_type":"record_created","subject_pith_number":"pith:2016:QPSIPI3P2ALG6TCBBAFP7ODJ47","target":"record","payload":{"canonical_record":{"source":{"id":"1604.06129","kind":"arxiv","version":2},"metadata":{"license":"http://arxiv.org/licenses/nonexclusive-distrib/1.0/","primary_cat":"astro-ph.EP","submitted_at":"2016-04-20T21:49:48Z","cross_cats_sorted":[],"title_canon_sha256":"68afcbd08bc318c1ea89dd9976fa48e7020896628764db4051490c31bd70f3cc","abstract_canon_sha256":"25c855fce3f0cd9239b9216b02e82d8ea598809d92a15a79552438d0431ca5cf"},"schema_version":"1.0"},"canonical_sha256":"83e487a36fd0166f4c41080affb869e7f4f4cd1c56e4353454ddad5f7d1a04fe","receipt":{"kind":"pith_receipt","key_id":"pith-v1-2026-05","algorithm":"ed25519","signed_at":"2026-05-18T00:53:12.373834Z","signature_b64":"XQ+iGq4OeTn6fjM7RVypFbt0s4iZhcHi6bdpXKPc56xkQGVmuA21U3Pxan9r1XU+7IuBO6tpoPKDZ67WS1NPCQ==","signed_message":"canonical_sha256_bytes","builder_version":"pith-number-builder-2026-05-17-v1","receipt_version":"0.3","canonical_sha256":"83e487a36fd0166f4c41080affb869e7f4f4cd1c56e4353454ddad5f7d1a04fe","last_reissued_at":"2026-05-18T00:53:12.373338Z","signature_status":"signed_v1","first_computed_at":"2026-05-18T00:53:12.373338Z","public_key_fingerprint":"8d4b5ee74e4693bcd1df2446408b0d54"},"source_kind":"arxiv","source_id":"1604.06129","source_version":2,"attestation_state":"computed"},"signer":{"signer_id":"pith.science","signer_type":"pith_registry","key_id":"pith-v1-2026-05","public_key_fingerprint":"8d4b5ee74e4693bcd1df2446408b0d54"},"created_at":"2026-05-18T00:53:12Z","supersedes":[],"prev_event":null,"signature":{"signature_status":"signed_v1","algorithm":"ed25519","key_id":"pith-v1-2026-05","public_key_fingerprint":"8d4b5ee74e4693bcd1df2446408b0d54","signature_b64":"Y/sVE2KG1wjAcgRHBQYkJUmhW/wfz+8chB0RvWe+/jZUgZ0wxvtSpfk/iTZDnpL9gregv0vLoEdww4cJHgh5DQ==","signed_message":"open_graph_event_sha256_bytes","signed_at":"2026-06-01T12:26:29.344742Z"},"content_sha256":"f70327c3712cc35535b49fda30e4e72355c11db18f76cfea690650a5703b66d0","schema_version":"1.0","event_id":"sha256:f70327c3712cc35535b49fda30e4e72355c11db18f76cfea690650a5703b66d0"},{"event_type":"graph_snapshot","subject_pith_number":"pith:2016:QPSIPI3P2ALG6TCBBAFP7ODJ47","target":"graph","payload":{"graph_snapshot":{"paper":{"title":"Global Albedos of Pluto and Charon from LORRI New Horizons Observations","license":"http://arxiv.org/licenses/nonexclusive-distrib/1.0/","headline":"","cross_cats":[],"primary_cat":"astro-ph.EP","authors_text":"A. Cheng, A. J. Verbiscer, A. M. Zangari, B. J. Buratti, C. B. Olkin, C. M. Lisse, H. A. Weaver, J. A. Mosher, J. D. Hofgartner, K. Ennico, K. Singer, L. A. Young, M. D. Hicks, R. A. Beyer, S. A. Stern, T. Momary, W. Grundy","submitted_at":"2016-04-20T21:49:48Z","abstract_excerpt":"The exploration of the Pluto-Charon system by the New Horizons spacecraft represents the first opportunity to understand the distribution of albedo and other photometric properties of the surfaces of objects in the Solar System's \"Third Zone\" of distant ice-rich bodies. Images of the entire illuminated surface of Pluto and Charon obtained by the Long Range Reconnaissance Imager (LORRI) camera provide a global map of Pluto that reveals surface albedo variegations larger than any other Solar System world except for Saturn's moon Iapetus. Normal reflectances on Pluto range from 0.08-1.0, and the "},"claims":{"count":0,"items":[],"snapshot_sha256":"258153158e38e3291e3d48162225fcdb2d5a3ed65a07baac614ab91432fd4f57"},"source":{"id":"1604.06129","kind":"arxiv","version":2},"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":"2026-05-18T00:53:12Z","supersedes":[],"prev_event":null,"signature":{"signature_status":"signed_v1","algorithm":"ed25519","key_id":"pith-v1-2026-05","public_key_fingerprint":"8d4b5ee74e4693bcd1df2446408b0d54","signature_b64":"zelOQhplNJxBvP+/hvRWVEXqP6sCBZM3aomOF+KLucQilFIFMJMJvYSYutOHB0JM+6VfvjvGFf3MbwxLPdrgCA==","signed_message":"open_graph_event_sha256_bytes","signed_at":"2026-06-01T12:26:29.345117Z"},"content_sha256":"8b00165591b50a6e80862d69d9b115331b0f68272e8aa7898287c8541656bb7b","schema_version":"1.0","event_id":"sha256:8b00165591b50a6e80862d69d9b115331b0f68272e8aa7898287c8541656bb7b"}],"timestamp_proofs":[],"mirror_hints":[{"mirror_type":"https","name":"Pith Resolver","base_url":"https://pith.science","bundle_url":"https://pith.science/pith/QPSIPI3P2ALG6TCBBAFP7ODJ47/bundle.json","state_url":"https://pith.science/pith/QPSIPI3P2ALG6TCBBAFP7ODJ47/state.json","well_known_bundle_url":"https://pith.science/.well-known/pith/QPSIPI3P2ALG6TCBBAFP7ODJ47/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":"2026-06-01T12:26:29Z","links":{"resolver":"https://pith.science/pith/QPSIPI3P2ALG6TCBBAFP7ODJ47","bundle":"https://pith.science/pith/QPSIPI3P2ALG6TCBBAFP7ODJ47/bundle.json","state":"https://pith.science/pith/QPSIPI3P2ALG6TCBBAFP7ODJ47/state.json","well_known_bundle":"https://pith.science/.well-known/pith/QPSIPI3P2ALG6TCBBAFP7ODJ47/bundle.json"},"state":{"state_type":"pith_open_graph_state","state_version":"1.0","pith_number":"pith:2016:QPSIPI3P2ALG6TCBBAFP7ODJ47","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":"25c855fce3f0cd9239b9216b02e82d8ea598809d92a15a79552438d0431ca5cf","cross_cats_sorted":[],"license":"http://arxiv.org/licenses/nonexclusive-distrib/1.0/","primary_cat":"astro-ph.EP","submitted_at":"2016-04-20T21:49:48Z","title_canon_sha256":"68afcbd08bc318c1ea89dd9976fa48e7020896628764db4051490c31bd70f3cc"},"schema_version":"1.0","source":{"id":"1604.06129","kind":"arxiv","version":2}},"source_aliases":[{"alias_kind":"arxiv","alias_value":"1604.06129","created_at":"2026-05-18T00:53:12Z"},{"alias_kind":"arxiv_version","alias_value":"1604.06129v2","created_at":"2026-05-18T00:53:12Z"},{"alias_kind":"doi","alias_value":"10.48550/arxiv.1604.06129","created_at":"2026-05-18T00:53:12Z"},{"alias_kind":"pith_short_12","alias_value":"QPSIPI3P2ALG","created_at":"2026-05-18T12:30:41Z"},{"alias_kind":"pith_short_16","alias_value":"QPSIPI3P2ALG6TCB","created_at":"2026-05-18T12:30:41Z"},{"alias_kind":"pith_short_8","alias_value":"QPSIPI3P","created_at":"2026-05-18T12:30:41Z"}],"graph_snapshots":[{"event_id":"sha256:8b00165591b50a6e80862d69d9b115331b0f68272e8aa7898287c8541656bb7b","target":"graph","created_at":"2026-05-18T00:53:12Z","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 exploration of the Pluto-Charon system by the New Horizons spacecraft represents the first opportunity to understand the distribution of albedo and other photometric properties of the surfaces of objects in the Solar System's \"Third Zone\" of distant ice-rich bodies. Images of the entire illuminated surface of Pluto and Charon obtained by the Long Range Reconnaissance Imager (LORRI) camera provide a global map of Pluto that reveals surface albedo variegations larger than any other Solar System world except for Saturn's moon Iapetus. Normal reflectances on Pluto range from 0.08-1.0, and the ","authors_text":"A. Cheng, A. J. Verbiscer, A. M. Zangari, B. J. Buratti, C. B. Olkin, C. M. Lisse, H. A. Weaver, J. A. Mosher, J. D. Hofgartner, K. Ennico, K. Singer, L. A. Young, M. D. Hicks, R. A. Beyer, S. A. Stern, T. Momary, W. Grundy","cross_cats":[],"headline":"","license":"http://arxiv.org/licenses/nonexclusive-distrib/1.0/","primary_cat":"astro-ph.EP","submitted_at":"2016-04-20T21:49:48Z","title":"Global Albedos of Pluto and Charon from LORRI New Horizons Observations"},"references":{"count":0,"internal_anchors":0,"resolved_work":0,"sample":[],"snapshot_sha256":"258153158e38e3291e3d48162225fcdb2d5a3ed65a07baac614ab91432fd4f57"},"source":{"id":"1604.06129","kind":"arxiv","version":2},"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:f70327c3712cc35535b49fda30e4e72355c11db18f76cfea690650a5703b66d0","target":"record","created_at":"2026-05-18T00:53:12Z","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":"25c855fce3f0cd9239b9216b02e82d8ea598809d92a15a79552438d0431ca5cf","cross_cats_sorted":[],"license":"http://arxiv.org/licenses/nonexclusive-distrib/1.0/","primary_cat":"astro-ph.EP","submitted_at":"2016-04-20T21:49:48Z","title_canon_sha256":"68afcbd08bc318c1ea89dd9976fa48e7020896628764db4051490c31bd70f3cc"},"schema_version":"1.0","source":{"id":"1604.06129","kind":"arxiv","version":2}},"canonical_sha256":"83e487a36fd0166f4c41080affb869e7f4f4cd1c56e4353454ddad5f7d1a04fe","receipt":{"algorithm":"ed25519","builder_version":"pith-number-builder-2026-05-17-v1","canonical_sha256":"83e487a36fd0166f4c41080affb869e7f4f4cd1c56e4353454ddad5f7d1a04fe","first_computed_at":"2026-05-18T00:53:12.373338Z","key_id":"pith-v1-2026-05","kind":"pith_receipt","last_reissued_at":"2026-05-18T00:53:12.373338Z","public_key_fingerprint":"8d4b5ee74e4693bcd1df2446408b0d54","receipt_version":"0.3","signature_b64":"XQ+iGq4OeTn6fjM7RVypFbt0s4iZhcHi6bdpXKPc56xkQGVmuA21U3Pxan9r1XU+7IuBO6tpoPKDZ67WS1NPCQ==","signature_status":"signed_v1","signed_at":"2026-05-18T00:53:12.373834Z","signed_message":"canonical_sha256_bytes"},"source_id":"1604.06129","source_kind":"arxiv","source_version":2}}},"equivocations":[],"invalid_events":[],"applied_event_ids":["sha256:f70327c3712cc35535b49fda30e4e72355c11db18f76cfea690650a5703b66d0","sha256:8b00165591b50a6e80862d69d9b115331b0f68272e8aa7898287c8541656bb7b"],"state_sha256":"19038ed615abc3a661693aa377e72c89ea0f02ac9f01c48a2934d3ea64576b98"},"bundle_signature":{"signature_status":"signed_v1","algorithm":"ed25519","key_id":"pith-v1-2026-05","public_key_fingerprint":"8d4b5ee74e4693bcd1df2446408b0d54","signature_b64":"wjHz7nMVUVYKNjAKdoI+2RTZcsbHMhCgC0Wi3Id4WqseUTe6fdKkSvtzF0qpQ6kKLp+I8nRTEH0+wTZdOhVYDA==","signed_message":"bundle_sha256_bytes","signed_at":"2026-06-01T12:26:29.347161Z","bundle_sha256":"14db3897e4ea59f2b3e0057707bd805c2863801f3d4c42bcb28056046f3e3b94"}}