{"bundle_type":"pith_open_graph_bundle","bundle_version":"1.0","pith_number":"pith:2016:KIQWQXAEXXI2RKGY4XFLXJEYVB","short_pith_number":"pith:KIQWQXAE","canonical_record":{"source":{"id":"1604.07822","kind":"arxiv","version":1},"metadata":{"license":"http://arxiv.org/licenses/nonexclusive-distrib/1.0/","primary_cat":"astro-ph.GA","submitted_at":"2016-04-26T20:00:01Z","cross_cats_sorted":[],"title_canon_sha256":"c51ed83f86ea6a673b71f7f185880dafff416efc0c21cfda8cf41383b2c40e5d","abstract_canon_sha256":"c40d3b2d02ab6c3a53c13cdb40d46b70773a2bda70caa488d12706a8648b075a"},"schema_version":"1.0"},"canonical_sha256":"5221685c04bdd1a8a8d8e5cabba498a851eee12ddeefdeea4cc9faf3ca33961c","source":{"kind":"arxiv","id":"1604.07822","version":1},"source_aliases":[{"alias_kind":"arxiv","alias_value":"1604.07822","created_at":"2026-05-18T01:16:08Z"},{"alias_kind":"arxiv_version","alias_value":"1604.07822v1","created_at":"2026-05-18T01:16:08Z"},{"alias_kind":"doi","alias_value":"10.48550/arxiv.1604.07822","created_at":"2026-05-18T01:16:08Z"},{"alias_kind":"pith_short_12","alias_value":"KIQWQXAEXXI2","created_at":"2026-05-18T12:30:25Z"},{"alias_kind":"pith_short_16","alias_value":"KIQWQXAEXXI2RKGY","created_at":"2026-05-18T12:30:25Z"},{"alias_kind":"pith_short_8","alias_value":"KIQWQXAE","created_at":"2026-05-18T12:30:25Z"}],"events":[{"event_type":"record_created","subject_pith_number":"pith:2016:KIQWQXAEXXI2RKGY4XFLXJEYVB","target":"record","payload":{"canonical_record":{"source":{"id":"1604.07822","kind":"arxiv","version":1},"metadata":{"license":"http://arxiv.org/licenses/nonexclusive-distrib/1.0/","primary_cat":"astro-ph.GA","submitted_at":"2016-04-26T20:00:01Z","cross_cats_sorted":[],"title_canon_sha256":"c51ed83f86ea6a673b71f7f185880dafff416efc0c21cfda8cf41383b2c40e5d","abstract_canon_sha256":"c40d3b2d02ab6c3a53c13cdb40d46b70773a2bda70caa488d12706a8648b075a"},"schema_version":"1.0"},"canonical_sha256":"5221685c04bdd1a8a8d8e5cabba498a851eee12ddeefdeea4cc9faf3ca33961c","receipt":{"kind":"pith_receipt","key_id":"pith-v1-2026-05","algorithm":"ed25519","signed_at":"2026-05-18T01:16:08.907807Z","signature_b64":"OGQEG1Q16FnyYrNwdknqyce8Uqn5+As2+uXzT2isRW6+p1z3uJI8FRhdBsumSgGLFcluOVk2+E11y+R5/rvBCw==","signed_message":"canonical_sha256_bytes","builder_version":"pith-number-builder-2026-05-17-v1","receipt_version":"0.3","canonical_sha256":"5221685c04bdd1a8a8d8e5cabba498a851eee12ddeefdeea4cc9faf3ca33961c","last_reissued_at":"2026-05-18T01:16:08.907155Z","signature_status":"signed_v1","first_computed_at":"2026-05-18T01:16:08.907155Z","public_key_fingerprint":"8d4b5ee74e4693bcd1df2446408b0d54"},"source_kind":"arxiv","source_id":"1604.07822","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":"2026-05-18T01:16:08Z","supersedes":[],"prev_event":null,"signature":{"signature_status":"signed_v1","algorithm":"ed25519","key_id":"pith-v1-2026-05","public_key_fingerprint":"8d4b5ee74e4693bcd1df2446408b0d54","signature_b64":"R3agVCVkkx6ovDAYN+mHNImlqmz5+iZ8JXywHX+sYJ5a4+x3FKF62YoFC5Yqr76zZ3uTVfznlui2RRcBXT+SCw==","signed_message":"open_graph_event_sha256_bytes","signed_at":"2026-05-28T18:15:47.364914Z"},"content_sha256":"a250516ee55f6d3ad3529b62fe2eb8f5c5986a22d3b3effdd385626a64ba5d0a","schema_version":"1.0","event_id":"sha256:a250516ee55f6d3ad3529b62fe2eb8f5c5986a22d3b3effdd385626a64ba5d0a"},{"event_type":"graph_snapshot","subject_pith_number":"pith:2016:KIQWQXAEXXI2RKGY4XFLXJEYVB","target":"graph","payload":{"graph_snapshot":{"paper":{"title":"Resolving Giant Molecular Clouds in NGC 300: A First Look with the Submillimeter Array","license":"http://arxiv.org/licenses/nonexclusive-distrib/1.0/","headline":"","cross_cats":[],"primary_cat":"astro-ph.GA","authors_text":"Charles Lada, Christopher Faesi, Jan Forbrich","submitted_at":"2016-04-26T20:00:01Z","abstract_excerpt":"We present the first high angular resolution study of giant molecular clouds (GMCs) in the nearby spiral galaxy NGC 300, based on observations from the Submillimeter Array (SMA). We target eleven 500 pc-sized regions of active star formation within the galaxy in the CO(J=2-1) line at 40 pc spatial and 1 km/s spectral resolution and identify 45 individual GMCs. We characterize the physical properties of these GMCs, and find that they are similar to GMCs in the disks of the Milky Way and other nearby spiral galaxies. For example, the GMC mass spectrum in our sample has a slope of 1.80+/-0.07. Tw"},"claims":{"count":0,"items":[],"snapshot_sha256":"258153158e38e3291e3d48162225fcdb2d5a3ed65a07baac614ab91432fd4f57"},"source":{"id":"1604.07822","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":"2026-05-18T01:16:08Z","supersedes":[],"prev_event":null,"signature":{"signature_status":"signed_v1","algorithm":"ed25519","key_id":"pith-v1-2026-05","public_key_fingerprint":"8d4b5ee74e4693bcd1df2446408b0d54","signature_b64":"YVbGhokwI8qttBVCmqPwd29NiSotwWOeEEZ37XWV98isUAtPEXC/BP6YndeyfnUi/PdEyYlCVSNky8EhrGKSCA==","signed_message":"open_graph_event_sha256_bytes","signed_at":"2026-05-28T18:15:47.365636Z"},"content_sha256":"54e52faa6c0b03bb3057c6083a37b49d6326e795f7c393ffb3cdde3de6a4d649","schema_version":"1.0","event_id":"sha256:54e52faa6c0b03bb3057c6083a37b49d6326e795f7c393ffb3cdde3de6a4d649"}],"timestamp_proofs":[],"mirror_hints":[{"mirror_type":"https","name":"Pith Resolver","base_url":"https://pith.science","bundle_url":"https://pith.science/pith/KIQWQXAEXXI2RKGY4XFLXJEYVB/bundle.json","state_url":"https://pith.science/pith/KIQWQXAEXXI2RKGY4XFLXJEYVB/state.json","well_known_bundle_url":"https://pith.science/.well-known/pith/KIQWQXAEXXI2RKGY4XFLXJEYVB/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":"2026-05-28T18:15:47Z","links":{"resolver":"https://pith.science/pith/KIQWQXAEXXI2RKGY4XFLXJEYVB","bundle":"https://pith.science/pith/KIQWQXAEXXI2RKGY4XFLXJEYVB/bundle.json","state":"https://pith.science/pith/KIQWQXAEXXI2RKGY4XFLXJEYVB/state.json","well_known_bundle":"https://pith.science/.well-known/pith/KIQWQXAEXXI2RKGY4XFLXJEYVB/bundle.json"},"state":{"state_type":"pith_open_graph_state","state_version":"1.0","pith_number":"pith:2016:KIQWQXAEXXI2RKGY4XFLXJEYVB","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":"c40d3b2d02ab6c3a53c13cdb40d46b70773a2bda70caa488d12706a8648b075a","cross_cats_sorted":[],"license":"http://arxiv.org/licenses/nonexclusive-distrib/1.0/","primary_cat":"astro-ph.GA","submitted_at":"2016-04-26T20:00:01Z","title_canon_sha256":"c51ed83f86ea6a673b71f7f185880dafff416efc0c21cfda8cf41383b2c40e5d"},"schema_version":"1.0","source":{"id":"1604.07822","kind":"arxiv","version":1}},"source_aliases":[{"alias_kind":"arxiv","alias_value":"1604.07822","created_at":"2026-05-18T01:16:08Z"},{"alias_kind":"arxiv_version","alias_value":"1604.07822v1","created_at":"2026-05-18T01:16:08Z"},{"alias_kind":"doi","alias_value":"10.48550/arxiv.1604.07822","created_at":"2026-05-18T01:16:08Z"},{"alias_kind":"pith_short_12","alias_value":"KIQWQXAEXXI2","created_at":"2026-05-18T12:30:25Z"},{"alias_kind":"pith_short_16","alias_value":"KIQWQXAEXXI2RKGY","created_at":"2026-05-18T12:30:25Z"},{"alias_kind":"pith_short_8","alias_value":"KIQWQXAE","created_at":"2026-05-18T12:30:25Z"}],"graph_snapshots":[{"event_id":"sha256:54e52faa6c0b03bb3057c6083a37b49d6326e795f7c393ffb3cdde3de6a4d649","target":"graph","created_at":"2026-05-18T01:16:08Z","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":"We present the first high angular resolution study of giant molecular clouds (GMCs) in the nearby spiral galaxy NGC 300, based on observations from the Submillimeter Array (SMA). We target eleven 500 pc-sized regions of active star formation within the galaxy in the CO(J=2-1) line at 40 pc spatial and 1 km/s spectral resolution and identify 45 individual GMCs. We characterize the physical properties of these GMCs, and find that they are similar to GMCs in the disks of the Milky Way and other nearby spiral galaxies. For example, the GMC mass spectrum in our sample has a slope of 1.80+/-0.07. Tw","authors_text":"Charles Lada, Christopher Faesi, Jan Forbrich","cross_cats":[],"headline":"","license":"http://arxiv.org/licenses/nonexclusive-distrib/1.0/","primary_cat":"astro-ph.GA","submitted_at":"2016-04-26T20:00:01Z","title":"Resolving Giant Molecular Clouds in NGC 300: A First Look with the Submillimeter Array"},"references":{"count":0,"internal_anchors":0,"resolved_work":0,"sample":[],"snapshot_sha256":"258153158e38e3291e3d48162225fcdb2d5a3ed65a07baac614ab91432fd4f57"},"source":{"id":"1604.07822","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:a250516ee55f6d3ad3529b62fe2eb8f5c5986a22d3b3effdd385626a64ba5d0a","target":"record","created_at":"2026-05-18T01:16:08Z","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":"c40d3b2d02ab6c3a53c13cdb40d46b70773a2bda70caa488d12706a8648b075a","cross_cats_sorted":[],"license":"http://arxiv.org/licenses/nonexclusive-distrib/1.0/","primary_cat":"astro-ph.GA","submitted_at":"2016-04-26T20:00:01Z","title_canon_sha256":"c51ed83f86ea6a673b71f7f185880dafff416efc0c21cfda8cf41383b2c40e5d"},"schema_version":"1.0","source":{"id":"1604.07822","kind":"arxiv","version":1}},"canonical_sha256":"5221685c04bdd1a8a8d8e5cabba498a851eee12ddeefdeea4cc9faf3ca33961c","receipt":{"algorithm":"ed25519","builder_version":"pith-number-builder-2026-05-17-v1","canonical_sha256":"5221685c04bdd1a8a8d8e5cabba498a851eee12ddeefdeea4cc9faf3ca33961c","first_computed_at":"2026-05-18T01:16:08.907155Z","key_id":"pith-v1-2026-05","kind":"pith_receipt","last_reissued_at":"2026-05-18T01:16:08.907155Z","public_key_fingerprint":"8d4b5ee74e4693bcd1df2446408b0d54","receipt_version":"0.3","signature_b64":"OGQEG1Q16FnyYrNwdknqyce8Uqn5+As2+uXzT2isRW6+p1z3uJI8FRhdBsumSgGLFcluOVk2+E11y+R5/rvBCw==","signature_status":"signed_v1","signed_at":"2026-05-18T01:16:08.907807Z","signed_message":"canonical_sha256_bytes"},"source_id":"1604.07822","source_kind":"arxiv","source_version":1}}},"equivocations":[],"invalid_events":[],"applied_event_ids":["sha256:a250516ee55f6d3ad3529b62fe2eb8f5c5986a22d3b3effdd385626a64ba5d0a","sha256:54e52faa6c0b03bb3057c6083a37b49d6326e795f7c393ffb3cdde3de6a4d649"],"state_sha256":"c1521e2d21e7ca25340794c1e1827f5970e5bc3e6ec38e79a5fe7aedf157268b"},"bundle_signature":{"signature_status":"signed_v1","algorithm":"ed25519","key_id":"pith-v1-2026-05","public_key_fingerprint":"8d4b5ee74e4693bcd1df2446408b0d54","signature_b64":"IfiqSDJbpT9lckaMSfjv9j6PJLwLDztA+lidxFmRr3kBtDcFTkmjSeJ7iladdy0wVM4rlt3Ns6XHHsMcfbq4Cg==","signed_message":"bundle_sha256_bytes","signed_at":"2026-05-28T18:15:47.368991Z","bundle_sha256":"65ce51858f149b9360cc97d49efd198e53f75330798318ee196c068f3e834719"}}