{"bundle_type":"pith_open_graph_bundle","bundle_version":"1.0","pith_number":"pith:2016:KONR42N3JQ4CPI7PNFGGXUXOOF","short_pith_number":"pith:KONR42N3","canonical_record":{"source":{"id":"1608.03895","kind":"arxiv","version":1},"metadata":{"license":"http://arxiv.org/licenses/nonexclusive-distrib/1.0/","primary_cat":"astro-ph.SR","submitted_at":"2016-08-12T20:00:04Z","cross_cats_sorted":["astro-ph.GA"],"title_canon_sha256":"3de87785f4da6e99fa734f8b5b66ce44d65054c326918fb632fa71c80d22e7ee","abstract_canon_sha256":"712c7194481766afb4d0c6df784007169c4e86b19fa4265e149cbc4c22f7b729"},"schema_version":"1.0"},"canonical_sha256":"539b1e69bb4c3827a3ef694c6bd2ee715ea7284b0c5e67e92cbc5bd10d070489","source":{"kind":"arxiv","id":"1608.03895","version":1},"source_aliases":[{"alias_kind":"arxiv","alias_value":"1608.03895","created_at":"2026-05-18T01:08:08Z"},{"alias_kind":"arxiv_version","alias_value":"1608.03895v1","created_at":"2026-05-18T01:08:08Z"},{"alias_kind":"doi","alias_value":"10.48550/arxiv.1608.03895","created_at":"2026-05-18T01:08:08Z"},{"alias_kind":"pith_short_12","alias_value":"KONR42N3JQ4C","created_at":"2026-05-18T12:30:25Z"},{"alias_kind":"pith_short_16","alias_value":"KONR42N3JQ4CPI7P","created_at":"2026-05-18T12:30:25Z"},{"alias_kind":"pith_short_8","alias_value":"KONR42N3","created_at":"2026-05-18T12:30:25Z"}],"events":[{"event_type":"record_created","subject_pith_number":"pith:2016:KONR42N3JQ4CPI7PNFGGXUXOOF","target":"record","payload":{"canonical_record":{"source":{"id":"1608.03895","kind":"arxiv","version":1},"metadata":{"license":"http://arxiv.org/licenses/nonexclusive-distrib/1.0/","primary_cat":"astro-ph.SR","submitted_at":"2016-08-12T20:00:04Z","cross_cats_sorted":["astro-ph.GA"],"title_canon_sha256":"3de87785f4da6e99fa734f8b5b66ce44d65054c326918fb632fa71c80d22e7ee","abstract_canon_sha256":"712c7194481766afb4d0c6df784007169c4e86b19fa4265e149cbc4c22f7b729"},"schema_version":"1.0"},"canonical_sha256":"539b1e69bb4c3827a3ef694c6bd2ee715ea7284b0c5e67e92cbc5bd10d070489","receipt":{"kind":"pith_receipt","key_id":"pith-v1-2026-05","algorithm":"ed25519","signed_at":"2026-05-18T01:08:08.307232Z","signature_b64":"oWIllMfRN1Aw/HK1ZtrMf1XOaUjNprYfhgZ1tzXzDVrfAloZ72eVeRAHMjdLCtUuj2qpq45TW4B5uy8bdmdsAw==","signed_message":"canonical_sha256_bytes","builder_version":"pith-number-builder-2026-05-17-v1","receipt_version":"0.3","canonical_sha256":"539b1e69bb4c3827a3ef694c6bd2ee715ea7284b0c5e67e92cbc5bd10d070489","last_reissued_at":"2026-05-18T01:08:08.306750Z","signature_status":"signed_v1","first_computed_at":"2026-05-18T01:08:08.306750Z","public_key_fingerprint":"8d4b5ee74e4693bcd1df2446408b0d54"},"source_kind":"arxiv","source_id":"1608.03895","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":"2026-05-18T01:08:08Z","supersedes":[],"prev_event":null,"signature":{"signature_status":"signed_v1","algorithm":"ed25519","key_id":"pith-v1-2026-05","public_key_fingerprint":"8d4b5ee74e4693bcd1df2446408b0d54","signature_b64":"0WiZFvfI+ej/KmztmmCfQBnFpMlW3FCkKVEzvXp67yb4iTBJlxgEiNbRg9Y/Sx/OupdE1pd1wRUB8GNs5VazBw==","signed_message":"open_graph_event_sha256_bytes","signed_at":"2026-05-25T21:02:45.596084Z"},"content_sha256":"1fc7fa15aea3704143d4a9430ae8d8b328b78eb2d5937a6dbfaf7c6471285183","schema_version":"1.0","event_id":"sha256:1fc7fa15aea3704143d4a9430ae8d8b328b78eb2d5937a6dbfaf7c6471285183"},{"event_type":"graph_snapshot","subject_pith_number":"pith:2016:KONR42N3JQ4CPI7PNFGGXUXOOF","target":"graph","payload":{"graph_snapshot":{"paper":{"title":"The evolution of Red Supergiants to supernova in the LMC cluster NGC 2100","license":"http://arxiv.org/licenses/nonexclusive-distrib/1.0/","headline":"","cross_cats":["astro-ph.GA"],"primary_cat":"astro-ph.SR","authors_text":"Ben Davies, Emma R. Beasor","submitted_at":"2016-08-12T20:00:04Z","abstract_excerpt":"The mass loss rates of red supergiants (RSGs) govern their evolution towards supernova and dictate the appearance of the resulting explosion. To study how mass-loss rates change with evolution we measure the mass-loss rates (\\mdot) and extinctions of 19 red supergiants in the young massive cluster NGC2100 in the Large Magellanic Cloud. By targeting stars in a coeval cluster we can study the mass-loss rate evolution whilst keeping the variables of mass and metallicity fixed. Mass-loss rates were determined by fitting DUSTY models to mid-IR photometry from WISE and Spitzer/IRAC. We find that the"},"claims":{"count":0,"items":[],"snapshot_sha256":"258153158e38e3291e3d48162225fcdb2d5a3ed65a07baac614ab91432fd4f57"},"source":{"id":"1608.03895","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":"2026-05-18T01:08:08Z","supersedes":[],"prev_event":null,"signature":{"signature_status":"signed_v1","algorithm":"ed25519","key_id":"pith-v1-2026-05","public_key_fingerprint":"8d4b5ee74e4693bcd1df2446408b0d54","signature_b64":"JRTpByDgN7mkUpePwlrdRdS3LXNXSWP19kBMOg5fYQ4foYd/rgV3rrt5Ccdi42Ch3GSESV3vZx0p0bDl053HCQ==","signed_message":"open_graph_event_sha256_bytes","signed_at":"2026-05-25T21:02:45.596522Z"},"content_sha256":"1a973158d96859853bf5c232325f988d4b59eeb6cf47e0f8fc271ead2a7f4e3c","schema_version":"1.0","event_id":"sha256:1a973158d96859853bf5c232325f988d4b59eeb6cf47e0f8fc271ead2a7f4e3c"}],"timestamp_proofs":[],"mirror_hints":[{"mirror_type":"https","name":"Pith Resolver","base_url":"https://pith.science","bundle_url":"https://pith.science/pith/KONR42N3JQ4CPI7PNFGGXUXOOF/bundle.json","state_url":"https://pith.science/pith/KONR42N3JQ4CPI7PNFGGXUXOOF/state.json","well_known_bundle_url":"https://pith.science/.well-known/pith/KONR42N3JQ4CPI7PNFGGXUXOOF/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":"2026-05-25T21:02:45Z","links":{"resolver":"https://pith.science/pith/KONR42N3JQ4CPI7PNFGGXUXOOF","bundle":"https://pith.science/pith/KONR42N3JQ4CPI7PNFGGXUXOOF/bundle.json","state":"https://pith.science/pith/KONR42N3JQ4CPI7PNFGGXUXOOF/state.json","well_known_bundle":"https://pith.science/.well-known/pith/KONR42N3JQ4CPI7PNFGGXUXOOF/bundle.json"},"state":{"state_type":"pith_open_graph_state","state_version":"1.0","pith_number":"pith:2016:KONR42N3JQ4CPI7PNFGGXUXOOF","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":"712c7194481766afb4d0c6df784007169c4e86b19fa4265e149cbc4c22f7b729","cross_cats_sorted":["astro-ph.GA"],"license":"http://arxiv.org/licenses/nonexclusive-distrib/1.0/","primary_cat":"astro-ph.SR","submitted_at":"2016-08-12T20:00:04Z","title_canon_sha256":"3de87785f4da6e99fa734f8b5b66ce44d65054c326918fb632fa71c80d22e7ee"},"schema_version":"1.0","source":{"id":"1608.03895","kind":"arxiv","version":1}},"source_aliases":[{"alias_kind":"arxiv","alias_value":"1608.03895","created_at":"2026-05-18T01:08:08Z"},{"alias_kind":"arxiv_version","alias_value":"1608.03895v1","created_at":"2026-05-18T01:08:08Z"},{"alias_kind":"doi","alias_value":"10.48550/arxiv.1608.03895","created_at":"2026-05-18T01:08:08Z"},{"alias_kind":"pith_short_12","alias_value":"KONR42N3JQ4C","created_at":"2026-05-18T12:30:25Z"},{"alias_kind":"pith_short_16","alias_value":"KONR42N3JQ4CPI7P","created_at":"2026-05-18T12:30:25Z"},{"alias_kind":"pith_short_8","alias_value":"KONR42N3","created_at":"2026-05-18T12:30:25Z"}],"graph_snapshots":[{"event_id":"sha256:1a973158d96859853bf5c232325f988d4b59eeb6cf47e0f8fc271ead2a7f4e3c","target":"graph","created_at":"2026-05-18T01:08:08Z","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 mass loss rates of red supergiants (RSGs) govern their evolution towards supernova and dictate the appearance of the resulting explosion. To study how mass-loss rates change with evolution we measure the mass-loss rates (\\mdot) and extinctions of 19 red supergiants in the young massive cluster NGC2100 in the Large Magellanic Cloud. By targeting stars in a coeval cluster we can study the mass-loss rate evolution whilst keeping the variables of mass and metallicity fixed. Mass-loss rates were determined by fitting DUSTY models to mid-IR photometry from WISE and Spitzer/IRAC. We find that the","authors_text":"Ben Davies, Emma R. Beasor","cross_cats":["astro-ph.GA"],"headline":"","license":"http://arxiv.org/licenses/nonexclusive-distrib/1.0/","primary_cat":"astro-ph.SR","submitted_at":"2016-08-12T20:00:04Z","title":"The evolution of Red Supergiants to supernova in the LMC cluster NGC 2100"},"references":{"count":0,"internal_anchors":0,"resolved_work":0,"sample":[],"snapshot_sha256":"258153158e38e3291e3d48162225fcdb2d5a3ed65a07baac614ab91432fd4f57"},"source":{"id":"1608.03895","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":"sha256:1fc7fa15aea3704143d4a9430ae8d8b328b78eb2d5937a6dbfaf7c6471285183","target":"record","created_at":"2026-05-18T01:08:08Z","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":"712c7194481766afb4d0c6df784007169c4e86b19fa4265e149cbc4c22f7b729","cross_cats_sorted":["astro-ph.GA"],"license":"http://arxiv.org/licenses/nonexclusive-distrib/1.0/","primary_cat":"astro-ph.SR","submitted_at":"2016-08-12T20:00:04Z","title_canon_sha256":"3de87785f4da6e99fa734f8b5b66ce44d65054c326918fb632fa71c80d22e7ee"},"schema_version":"1.0","source":{"id":"1608.03895","kind":"arxiv","version":1}},"canonical_sha256":"539b1e69bb4c3827a3ef694c6bd2ee715ea7284b0c5e67e92cbc5bd10d070489","receipt":{"algorithm":"ed25519","builder_version":"pith-number-builder-2026-05-17-v1","canonical_sha256":"539b1e69bb4c3827a3ef694c6bd2ee715ea7284b0c5e67e92cbc5bd10d070489","first_computed_at":"2026-05-18T01:08:08.306750Z","key_id":"pith-v1-2026-05","kind":"pith_receipt","last_reissued_at":"2026-05-18T01:08:08.306750Z","public_key_fingerprint":"8d4b5ee74e4693bcd1df2446408b0d54","receipt_version":"0.3","signature_b64":"oWIllMfRN1Aw/HK1ZtrMf1XOaUjNprYfhgZ1tzXzDVrfAloZ72eVeRAHMjdLCtUuj2qpq45TW4B5uy8bdmdsAw==","signature_status":"signed_v1","signed_at":"2026-05-18T01:08:08.307232Z","signed_message":"canonical_sha256_bytes"},"source_id":"1608.03895","source_kind":"arxiv","source_version":1}}},"equivocations":[],"invalid_events":[],"applied_event_ids":["sha256:1fc7fa15aea3704143d4a9430ae8d8b328b78eb2d5937a6dbfaf7c6471285183","sha256:1a973158d96859853bf5c232325f988d4b59eeb6cf47e0f8fc271ead2a7f4e3c"],"state_sha256":"30cf7314eba2401ae9e53394a51211546d1faea6dd28302e2b855e306d20d05b"},"bundle_signature":{"signature_status":"signed_v1","algorithm":"ed25519","key_id":"pith-v1-2026-05","public_key_fingerprint":"8d4b5ee74e4693bcd1df2446408b0d54","signature_b64":"OVvgTI/a3czo0WW0u9ZiDAk4vT+aJRAocBtbJbkdWgOdgyRpjr/cD6SADmzt8VomntHrqNVW1yiOh7DVs7CuBA==","signed_message":"bundle_sha256_bytes","signed_at":"2026-05-25T21:02:45.600026Z","bundle_sha256":"06bea8e4002d16c7bc44698abd2936ede9b7f0f44198fed5d796be7b2e382aa6"}}