{"bundle_type":"pith_open_graph_bundle","bundle_version":"1.0","pith_number":"pith:2016:WUOJVFTS53OWENGTL7D6FALX5B","short_pith_number":"pith:WUOJVFTS","canonical_record":{"source":{"id":"1601.01555","kind":"arxiv","version":1},"metadata":{"license":"http://arxiv.org/licenses/nonexclusive-distrib/1.0/","primary_cat":"astro-ph.SR","submitted_at":"2016-01-07T15:03:29Z","cross_cats_sorted":["astro-ph.GA"],"title_canon_sha256":"b5530a9dacb416050580765400baa3961cb2db90bcbb45d2225a232541ea39cc","abstract_canon_sha256":"0737eef5798d5502c7499e714a8044a1e8e8d065e5b84fb145e96220fccc27f3"},"schema_version":"1.0"},"canonical_sha256":"b51c9a9672eedd6234d35fc7e28177e872a95c17120071c993d78129047cf686","source":{"kind":"arxiv","id":"1601.01555","version":1},"source_aliases":[{"alias_kind":"arxiv","alias_value":"1601.01555","created_at":"2026-05-18T01:20:40Z"},{"alias_kind":"arxiv_version","alias_value":"1601.01555v1","created_at":"2026-05-18T01:20:40Z"},{"alias_kind":"doi","alias_value":"10.48550/arxiv.1601.01555","created_at":"2026-05-18T01:20:40Z"},{"alias_kind":"pith_short_12","alias_value":"WUOJVFTS53OW","created_at":"2026-05-18T12:30:51Z"},{"alias_kind":"pith_short_16","alias_value":"WUOJVFTS53OWENGT","created_at":"2026-05-18T12:30:51Z"},{"alias_kind":"pith_short_8","alias_value":"WUOJVFTS","created_at":"2026-05-18T12:30:51Z"}],"events":[{"event_type":"record_created","subject_pith_number":"pith:2016:WUOJVFTS53OWENGTL7D6FALX5B","target":"record","payload":{"canonical_record":{"source":{"id":"1601.01555","kind":"arxiv","version":1},"metadata":{"license":"http://arxiv.org/licenses/nonexclusive-distrib/1.0/","primary_cat":"astro-ph.SR","submitted_at":"2016-01-07T15:03:29Z","cross_cats_sorted":["astro-ph.GA"],"title_canon_sha256":"b5530a9dacb416050580765400baa3961cb2db90bcbb45d2225a232541ea39cc","abstract_canon_sha256":"0737eef5798d5502c7499e714a8044a1e8e8d065e5b84fb145e96220fccc27f3"},"schema_version":"1.0"},"canonical_sha256":"b51c9a9672eedd6234d35fc7e28177e872a95c17120071c993d78129047cf686","receipt":{"kind":"pith_receipt","key_id":"pith-v1-2026-05","algorithm":"ed25519","signed_at":"2026-05-18T01:20:40.518015Z","signature_b64":"3yaIbO6dKPCv/lncPGqVI92KvbtfyMQBG/6+60/0WYlQb/DD8aWHDU98u1OU5uRJW6A4g5AaqyXwpXT0C5PWBQ==","signed_message":"canonical_sha256_bytes","builder_version":"pith-number-builder-2026-05-17-v1","receipt_version":"0.3","canonical_sha256":"b51c9a9672eedd6234d35fc7e28177e872a95c17120071c993d78129047cf686","last_reissued_at":"2026-05-18T01:20:40.517403Z","signature_status":"signed_v1","first_computed_at":"2026-05-18T01:20:40.517403Z","public_key_fingerprint":"8d4b5ee74e4693bcd1df2446408b0d54"},"source_kind":"arxiv","source_id":"1601.01555","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":"2026-05-18T01:20:40Z","supersedes":[],"prev_event":null,"signature":{"signature_status":"signed_v1","algorithm":"ed25519","key_id":"pith-v1-2026-05","public_key_fingerprint":"8d4b5ee74e4693bcd1df2446408b0d54","signature_b64":"JBBvxVQAEImUKKHvJKe6PLGTthuv8LAB5qXqx7IGFIVttD5qpa+50dZn3GoM9wViTJAQjLwk8dN8z7xKYVKrAA==","signed_message":"open_graph_event_sha256_bytes","signed_at":"2026-05-28T08:09:58.176437Z"},"content_sha256":"a163af65c946c79a72eadfd86ff577de202f349ed7c62a06aa39fa6b2f2dcbea","schema_version":"1.0","event_id":"sha256:a163af65c946c79a72eadfd86ff577de202f349ed7c62a06aa39fa6b2f2dcbea"},{"event_type":"graph_snapshot","subject_pith_number":"pith:2016:WUOJVFTS53OWENGTL7D6FALX5B","target":"graph","payload":{"graph_snapshot":{"paper":{"title":"Herbig Ae/Be candidate stars in the innermost Galactic disk: Quartet cluster","license":"http://arxiv.org/licenses/nonexclusive-distrib/1.0/","headline":"","cross_cats":["astro-ph.GA"],"primary_cat":"astro-ph.SR","authors_text":"Alan T. Tokunaga, Chikako Yasui, Masao Saito, Naoto Kobayashi, Natsuko Izumi, Satoshi Hamano, Sohei Kondo","submitted_at":"2016-01-07T15:03:29Z","abstract_excerpt":"In order to investigate the Galactic-scale environmental effects on the evolution of protoplanetary disks, we explored the near-infrared (NIR) disk fraction of the Quartet cluster, which is a young cluster in the innermost Galactic disk at the Galactocentric radius Rg ~ 4 kpc. Because this cluster has a typical cluster mass of ~10^3 M_sun as opposed to very massive clusters, which have been observed in previous studies (>10^4 M_sun), we can avoid intra-cluster effects such as strong UV field from OB stars. Although the age of the Quartet is previously estimated to be 3-8 Myr old, we find that "},"claims":{"count":0,"items":[],"snapshot_sha256":"258153158e38e3291e3d48162225fcdb2d5a3ed65a07baac614ab91432fd4f57"},"source":{"id":"1601.01555","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":"2026-05-18T01:20:40Z","supersedes":[],"prev_event":null,"signature":{"signature_status":"signed_v1","algorithm":"ed25519","key_id":"pith-v1-2026-05","public_key_fingerprint":"8d4b5ee74e4693bcd1df2446408b0d54","signature_b64":"vuPAdNIxr/K8bp/YM2jcoBlmr7HvSv/nOJGmQFoGSQFBES5bbVVO/t/U1AK6KCZyVtarVyC2C+1LPwAWMn7vCQ==","signed_message":"open_graph_event_sha256_bytes","signed_at":"2026-05-28T08:09:58.176791Z"},"content_sha256":"2b743536dcfb08abdb8ac0f17c7472b54ad992c19942a87c3cb4fcc375a80aa2","schema_version":"1.0","event_id":"sha256:2b743536dcfb08abdb8ac0f17c7472b54ad992c19942a87c3cb4fcc375a80aa2"}],"timestamp_proofs":[],"mirror_hints":[{"mirror_type":"https","name":"Pith Resolver","base_url":"https://pith.science","bundle_url":"https://pith.science/pith/WUOJVFTS53OWENGTL7D6FALX5B/bundle.json","state_url":"https://pith.science/pith/WUOJVFTS53OWENGTL7D6FALX5B/state.json","well_known_bundle_url":"https://pith.science/.well-known/pith/WUOJVFTS53OWENGTL7D6FALX5B/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":"2026-05-28T08:09:58Z","links":{"resolver":"https://pith.science/pith/WUOJVFTS53OWENGTL7D6FALX5B","bundle":"https://pith.science/pith/WUOJVFTS53OWENGTL7D6FALX5B/bundle.json","state":"https://pith.science/pith/WUOJVFTS53OWENGTL7D6FALX5B/state.json","well_known_bundle":"https://pith.science/.well-known/pith/WUOJVFTS53OWENGTL7D6FALX5B/bundle.json"},"state":{"state_type":"pith_open_graph_state","state_version":"1.0","pith_number":"pith:2016:WUOJVFTS53OWENGTL7D6FALX5B","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":"0737eef5798d5502c7499e714a8044a1e8e8d065e5b84fb145e96220fccc27f3","cross_cats_sorted":["astro-ph.GA"],"license":"http://arxiv.org/licenses/nonexclusive-distrib/1.0/","primary_cat":"astro-ph.SR","submitted_at":"2016-01-07T15:03:29Z","title_canon_sha256":"b5530a9dacb416050580765400baa3961cb2db90bcbb45d2225a232541ea39cc"},"schema_version":"1.0","source":{"id":"1601.01555","kind":"arxiv","version":1}},"source_aliases":[{"alias_kind":"arxiv","alias_value":"1601.01555","created_at":"2026-05-18T01:20:40Z"},{"alias_kind":"arxiv_version","alias_value":"1601.01555v1","created_at":"2026-05-18T01:20:40Z"},{"alias_kind":"doi","alias_value":"10.48550/arxiv.1601.01555","created_at":"2026-05-18T01:20:40Z"},{"alias_kind":"pith_short_12","alias_value":"WUOJVFTS53OW","created_at":"2026-05-18T12:30:51Z"},{"alias_kind":"pith_short_16","alias_value":"WUOJVFTS53OWENGT","created_at":"2026-05-18T12:30:51Z"},{"alias_kind":"pith_short_8","alias_value":"WUOJVFTS","created_at":"2026-05-18T12:30:51Z"}],"graph_snapshots":[{"event_id":"sha256:2b743536dcfb08abdb8ac0f17c7472b54ad992c19942a87c3cb4fcc375a80aa2","target":"graph","created_at":"2026-05-18T01:20:40Z","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":"In order to investigate the Galactic-scale environmental effects on the evolution of protoplanetary disks, we explored the near-infrared (NIR) disk fraction of the Quartet cluster, which is a young cluster in the innermost Galactic disk at the Galactocentric radius Rg ~ 4 kpc. Because this cluster has a typical cluster mass of ~10^3 M_sun as opposed to very massive clusters, which have been observed in previous studies (>10^4 M_sun), we can avoid intra-cluster effects such as strong UV field from OB stars. Although the age of the Quartet is previously estimated to be 3-8 Myr old, we find that ","authors_text":"Alan T. Tokunaga, Chikako Yasui, Masao Saito, Naoto Kobayashi, Natsuko Izumi, Satoshi Hamano, Sohei Kondo","cross_cats":["astro-ph.GA"],"headline":"","license":"http://arxiv.org/licenses/nonexclusive-distrib/1.0/","primary_cat":"astro-ph.SR","submitted_at":"2016-01-07T15:03:29Z","title":"Herbig Ae/Be candidate stars in the innermost Galactic disk: Quartet cluster"},"references":{"count":0,"internal_anchors":0,"resolved_work":0,"sample":[],"snapshot_sha256":"258153158e38e3291e3d48162225fcdb2d5a3ed65a07baac614ab91432fd4f57"},"source":{"id":"1601.01555","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:a163af65c946c79a72eadfd86ff577de202f349ed7c62a06aa39fa6b2f2dcbea","target":"record","created_at":"2026-05-18T01:20:40Z","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":"0737eef5798d5502c7499e714a8044a1e8e8d065e5b84fb145e96220fccc27f3","cross_cats_sorted":["astro-ph.GA"],"license":"http://arxiv.org/licenses/nonexclusive-distrib/1.0/","primary_cat":"astro-ph.SR","submitted_at":"2016-01-07T15:03:29Z","title_canon_sha256":"b5530a9dacb416050580765400baa3961cb2db90bcbb45d2225a232541ea39cc"},"schema_version":"1.0","source":{"id":"1601.01555","kind":"arxiv","version":1}},"canonical_sha256":"b51c9a9672eedd6234d35fc7e28177e872a95c17120071c993d78129047cf686","receipt":{"algorithm":"ed25519","builder_version":"pith-number-builder-2026-05-17-v1","canonical_sha256":"b51c9a9672eedd6234d35fc7e28177e872a95c17120071c993d78129047cf686","first_computed_at":"2026-05-18T01:20:40.517403Z","key_id":"pith-v1-2026-05","kind":"pith_receipt","last_reissued_at":"2026-05-18T01:20:40.517403Z","public_key_fingerprint":"8d4b5ee74e4693bcd1df2446408b0d54","receipt_version":"0.3","signature_b64":"3yaIbO6dKPCv/lncPGqVI92KvbtfyMQBG/6+60/0WYlQb/DD8aWHDU98u1OU5uRJW6A4g5AaqyXwpXT0C5PWBQ==","signature_status":"signed_v1","signed_at":"2026-05-18T01:20:40.518015Z","signed_message":"canonical_sha256_bytes"},"source_id":"1601.01555","source_kind":"arxiv","source_version":1}}},"equivocations":[],"invalid_events":[],"applied_event_ids":["sha256:a163af65c946c79a72eadfd86ff577de202f349ed7c62a06aa39fa6b2f2dcbea","sha256:2b743536dcfb08abdb8ac0f17c7472b54ad992c19942a87c3cb4fcc375a80aa2"],"state_sha256":"bc256b953bf86e19d01542877c737f97a4e4154e11a5a6aa6c346220c64b6319"},"bundle_signature":{"signature_status":"signed_v1","algorithm":"ed25519","key_id":"pith-v1-2026-05","public_key_fingerprint":"8d4b5ee74e4693bcd1df2446408b0d54","signature_b64":"ySFq1Zn1cxRrQNCjnUcEKLLAThQRuAh+ckKO9YldbxDADVh/5o/Yk8tH2c57d5JKmxZwnj21jvrltvu4EiwBBg==","signed_message":"bundle_sha256_bytes","signed_at":"2026-05-28T08:09:58.179010Z","bundle_sha256":"f6211f1e18a4a0beadc9e79f391827de831ac87267cdef76609d4d71d30c9590"}}