{"bundle_type":"pith_open_graph_bundle","bundle_version":"1.0","pith_number":"pith:2016:NAKTV7I5GCC27DQPEHWJXT24QF","short_pith_number":"pith:NAKTV7I5","canonical_record":{"source":{"id":"1602.00740","kind":"arxiv","version":2},"metadata":{"license":"http://arxiv.org/licenses/nonexclusive-distrib/1.0/","primary_cat":"astro-ph.EP","submitted_at":"2016-02-01T23:04:50Z","cross_cats_sorted":[],"title_canon_sha256":"65f4471ec9f8da67f8999cdab5ade3aa61a962a95125ae8dc6f0fcd8578ef125","abstract_canon_sha256":"9123258eea8ecf76a0608b0e3e09d32c3f8f26aba8f87952a652f77422dd83ff"},"schema_version":"1.0"},"canonical_sha256":"68153afd1d3085af8e0f21ec9bcf5c816de987852e53d95d21c7ab7dfc036a84","source":{"kind":"arxiv","id":"1602.00740","version":2},"source_aliases":[{"alias_kind":"arxiv","alias_value":"1602.00740","created_at":"2026-05-18T01:18:37Z"},{"alias_kind":"arxiv_version","alias_value":"1602.00740v2","created_at":"2026-05-18T01:18:37Z"},{"alias_kind":"doi","alias_value":"10.48550/arxiv.1602.00740","created_at":"2026-05-18T01:18:37Z"},{"alias_kind":"pith_short_12","alias_value":"NAKTV7I5GCC2","created_at":"2026-05-18T12:30:32Z"},{"alias_kind":"pith_short_16","alias_value":"NAKTV7I5GCC27DQP","created_at":"2026-05-18T12:30:32Z"},{"alias_kind":"pith_short_8","alias_value":"NAKTV7I5","created_at":"2026-05-18T12:30:32Z"}],"events":[{"event_type":"record_created","subject_pith_number":"pith:2016:NAKTV7I5GCC27DQPEHWJXT24QF","target":"record","payload":{"canonical_record":{"source":{"id":"1602.00740","kind":"arxiv","version":2},"metadata":{"license":"http://arxiv.org/licenses/nonexclusive-distrib/1.0/","primary_cat":"astro-ph.EP","submitted_at":"2016-02-01T23:04:50Z","cross_cats_sorted":[],"title_canon_sha256":"65f4471ec9f8da67f8999cdab5ade3aa61a962a95125ae8dc6f0fcd8578ef125","abstract_canon_sha256":"9123258eea8ecf76a0608b0e3e09d32c3f8f26aba8f87952a652f77422dd83ff"},"schema_version":"1.0"},"canonical_sha256":"68153afd1d3085af8e0f21ec9bcf5c816de987852e53d95d21c7ab7dfc036a84","receipt":{"kind":"pith_receipt","key_id":"pith-v1-2026-05","algorithm":"ed25519","signed_at":"2026-05-18T01:18:37.690259Z","signature_b64":"U1xMBh5qzmBbRVEigyiqKsV62PD7OOeHVUFS2Y7+QB4bjvv0rncuUil80XeUDB+qcDb0ajvBrMLJKzGuq/B3Cg==","signed_message":"canonical_sha256_bytes","builder_version":"pith-number-builder-2026-05-17-v1","receipt_version":"0.3","canonical_sha256":"68153afd1d3085af8e0f21ec9bcf5c816de987852e53d95d21c7ab7dfc036a84","last_reissued_at":"2026-05-18T01:18:37.689700Z","signature_status":"signed_v1","first_computed_at":"2026-05-18T01:18:37.689700Z","public_key_fingerprint":"8d4b5ee74e4693bcd1df2446408b0d54"},"source_kind":"arxiv","source_id":"1602.00740","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":"2026-05-18T01:18:37Z","supersedes":[],"prev_event":null,"signature":{"signature_status":"signed_v1","algorithm":"ed25519","key_id":"pith-v1-2026-05","public_key_fingerprint":"8d4b5ee74e4693bcd1df2446408b0d54","signature_b64":"OwiPVAi5EkjsIkHJrwEWAzfdWQppBZ5iOY9yJzVRv/nWPnkx6hDv1vhRoJ91xRCiRlYlBp5WtdT58Gmh39NKAg==","signed_message":"open_graph_event_sha256_bytes","signed_at":"2026-06-03T21:33:43.122480Z"},"content_sha256":"50c070fcd5073781b8e3cd32c3aee05673201da15d5603d4c6e1bae241fbed13","schema_version":"1.0","event_id":"sha256:50c070fcd5073781b8e3cd32c3aee05673201da15d5603d4c6e1bae241fbed13"},{"event_type":"graph_snapshot","subject_pith_number":"pith:2016:NAKTV7I5GCC27DQPEHWJXT24QF","target":"graph","payload":{"graph_snapshot":{"paper":{"title":"Drifting Asteroid Fragments Around WD 1145+017","license":"http://arxiv.org/licenses/nonexclusive-distrib/1.0/","headline":"","cross_cats":[],"primary_cat":"astro-ph.EP","authors_text":"A. Vanderburg, B. Croll, B.L. Gary, J. Foote, P. Benni, S. Rappaport, T. Kaye","submitted_at":"2016-02-01T23:04:50Z","abstract_excerpt":"We have obtained extensive photometric observations of the polluted white dwarf WD 1145+017 which has been reported to be transited by at least one, and perhaps several, large asteroids (or, planetesimals) with dust emission. We have carried out 53 observation sessions on 37 nights, totaling 192 hours, of this 17th magnitude star with small to modest size telescopes covering the interval 2015 November 1 to 2016 January 21. In all, we have detected some 237 significant dips in flux. Periodograms of the data reveal a significant periodicity of 4.5004 hours that is consistent with the dominant (\""},"claims":{"count":0,"items":[],"snapshot_sha256":"258153158e38e3291e3d48162225fcdb2d5a3ed65a07baac614ab91432fd4f57"},"source":{"id":"1602.00740","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":"2026-05-18T01:18:37Z","supersedes":[],"prev_event":null,"signature":{"signature_status":"signed_v1","algorithm":"ed25519","key_id":"pith-v1-2026-05","public_key_fingerprint":"8d4b5ee74e4693bcd1df2446408b0d54","signature_b64":"oqY74lUUlVUphtXxGGGKKw+Ff0cv+A9O/4vv9deyqqmoeqK8ZU+Maygi/2Nx7qp9cjiydZRzFPkYzzhbMq3cAA==","signed_message":"open_graph_event_sha256_bytes","signed_at":"2026-06-03T21:33:43.122842Z"},"content_sha256":"ac9ad124033ea1ba74c3b88d7de4e1a91f521f7ec2cb0217f0333eb4414a7f36","schema_version":"1.0","event_id":"sha256:ac9ad124033ea1ba74c3b88d7de4e1a91f521f7ec2cb0217f0333eb4414a7f36"}],"timestamp_proofs":[],"mirror_hints":[{"mirror_type":"https","name":"Pith Resolver","base_url":"https://pith.science","bundle_url":"https://pith.science/pith/NAKTV7I5GCC27DQPEHWJXT24QF/bundle.json","state_url":"https://pith.science/pith/NAKTV7I5GCC27DQPEHWJXT24QF/state.json","well_known_bundle_url":"https://pith.science/.well-known/pith/NAKTV7I5GCC27DQPEHWJXT24QF/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":"2026-06-03T21:33:43Z","links":{"resolver":"https://pith.science/pith/NAKTV7I5GCC27DQPEHWJXT24QF","bundle":"https://pith.science/pith/NAKTV7I5GCC27DQPEHWJXT24QF/bundle.json","state":"https://pith.science/pith/NAKTV7I5GCC27DQPEHWJXT24QF/state.json","well_known_bundle":"https://pith.science/.well-known/pith/NAKTV7I5GCC27DQPEHWJXT24QF/bundle.json"},"state":{"state_type":"pith_open_graph_state","state_version":"1.0","pith_number":"pith:2016:NAKTV7I5GCC27DQPEHWJXT24QF","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":"9123258eea8ecf76a0608b0e3e09d32c3f8f26aba8f87952a652f77422dd83ff","cross_cats_sorted":[],"license":"http://arxiv.org/licenses/nonexclusive-distrib/1.0/","primary_cat":"astro-ph.EP","submitted_at":"2016-02-01T23:04:50Z","title_canon_sha256":"65f4471ec9f8da67f8999cdab5ade3aa61a962a95125ae8dc6f0fcd8578ef125"},"schema_version":"1.0","source":{"id":"1602.00740","kind":"arxiv","version":2}},"source_aliases":[{"alias_kind":"arxiv","alias_value":"1602.00740","created_at":"2026-05-18T01:18:37Z"},{"alias_kind":"arxiv_version","alias_value":"1602.00740v2","created_at":"2026-05-18T01:18:37Z"},{"alias_kind":"doi","alias_value":"10.48550/arxiv.1602.00740","created_at":"2026-05-18T01:18:37Z"},{"alias_kind":"pith_short_12","alias_value":"NAKTV7I5GCC2","created_at":"2026-05-18T12:30:32Z"},{"alias_kind":"pith_short_16","alias_value":"NAKTV7I5GCC27DQP","created_at":"2026-05-18T12:30:32Z"},{"alias_kind":"pith_short_8","alias_value":"NAKTV7I5","created_at":"2026-05-18T12:30:32Z"}],"graph_snapshots":[{"event_id":"sha256:ac9ad124033ea1ba74c3b88d7de4e1a91f521f7ec2cb0217f0333eb4414a7f36","target":"graph","created_at":"2026-05-18T01:18:37Z","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":"We have obtained extensive photometric observations of the polluted white dwarf WD 1145+017 which has been reported to be transited by at least one, and perhaps several, large asteroids (or, planetesimals) with dust emission. We have carried out 53 observation sessions on 37 nights, totaling 192 hours, of this 17th magnitude star with small to modest size telescopes covering the interval 2015 November 1 to 2016 January 21. In all, we have detected some 237 significant dips in flux. Periodograms of the data reveal a significant periodicity of 4.5004 hours that is consistent with the dominant (\"","authors_text":"A. Vanderburg, B. Croll, B.L. Gary, J. Foote, P. Benni, S. Rappaport, T. Kaye","cross_cats":[],"headline":"","license":"http://arxiv.org/licenses/nonexclusive-distrib/1.0/","primary_cat":"astro-ph.EP","submitted_at":"2016-02-01T23:04:50Z","title":"Drifting Asteroid Fragments Around WD 1145+017"},"references":{"count":0,"internal_anchors":0,"resolved_work":0,"sample":[],"snapshot_sha256":"258153158e38e3291e3d48162225fcdb2d5a3ed65a07baac614ab91432fd4f57"},"source":{"id":"1602.00740","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":"sha256:50c070fcd5073781b8e3cd32c3aee05673201da15d5603d4c6e1bae241fbed13","target":"record","created_at":"2026-05-18T01:18:37Z","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":"9123258eea8ecf76a0608b0e3e09d32c3f8f26aba8f87952a652f77422dd83ff","cross_cats_sorted":[],"license":"http://arxiv.org/licenses/nonexclusive-distrib/1.0/","primary_cat":"astro-ph.EP","submitted_at":"2016-02-01T23:04:50Z","title_canon_sha256":"65f4471ec9f8da67f8999cdab5ade3aa61a962a95125ae8dc6f0fcd8578ef125"},"schema_version":"1.0","source":{"id":"1602.00740","kind":"arxiv","version":2}},"canonical_sha256":"68153afd1d3085af8e0f21ec9bcf5c816de987852e53d95d21c7ab7dfc036a84","receipt":{"algorithm":"ed25519","builder_version":"pith-number-builder-2026-05-17-v1","canonical_sha256":"68153afd1d3085af8e0f21ec9bcf5c816de987852e53d95d21c7ab7dfc036a84","first_computed_at":"2026-05-18T01:18:37.689700Z","key_id":"pith-v1-2026-05","kind":"pith_receipt","last_reissued_at":"2026-05-18T01:18:37.689700Z","public_key_fingerprint":"8d4b5ee74e4693bcd1df2446408b0d54","receipt_version":"0.3","signature_b64":"U1xMBh5qzmBbRVEigyiqKsV62PD7OOeHVUFS2Y7+QB4bjvv0rncuUil80XeUDB+qcDb0ajvBrMLJKzGuq/B3Cg==","signature_status":"signed_v1","signed_at":"2026-05-18T01:18:37.690259Z","signed_message":"canonical_sha256_bytes"},"source_id":"1602.00740","source_kind":"arxiv","source_version":2}}},"equivocations":[],"invalid_events":[],"applied_event_ids":["sha256:50c070fcd5073781b8e3cd32c3aee05673201da15d5603d4c6e1bae241fbed13","sha256:ac9ad124033ea1ba74c3b88d7de4e1a91f521f7ec2cb0217f0333eb4414a7f36"],"state_sha256":"01024c84c42ef7686b8de0edcdadd0999e59f6534489e3a6554382b0d978b5e6"},"bundle_signature":{"signature_status":"signed_v1","algorithm":"ed25519","key_id":"pith-v1-2026-05","public_key_fingerprint":"8d4b5ee74e4693bcd1df2446408b0d54","signature_b64":"kWdjTWh4NlrUQw0jnCpMZWG6HsB0Z1MwIQ+ajl0ebAI2E/6liLa8Egi7MeWkbrOCJTnb8zOuvTXy3NXEqNEECA==","signed_message":"bundle_sha256_bytes","signed_at":"2026-06-03T21:33:43.125091Z","bundle_sha256":"ebb4825e276fa9c99cf4dfb7021fea0b345f35468953f2469886cea5062aac26"}}