{"bundle_type":"pith_open_graph_bundle","bundle_version":"1.0","pith_number":"pith:2008:QNG5ZP6EA5CBMS4LQUSY4H5VQ3","short_pith_number":"pith:QNG5ZP6E","canonical_record":{"source":{"id":"0812.2187","kind":"arxiv","version":1},"metadata":{"license":"http://arxiv.org/licenses/nonexclusive-distrib/1.0/","primary_cat":"astro-ph","submitted_at":"2008-12-11T16:38:49Z","cross_cats_sorted":[],"title_canon_sha256":"61b0e1b3123b094b1dcb8a1d4cbd3d405badbccc1bcbdebfe7a46793c09d5ccd","abstract_canon_sha256":"b7b434c6dfd4c2bbeeacc764d0beb68ad18ae637c617274002089b1c61754089"},"schema_version":"1.0"},"canonical_sha256":"834ddcbfc40744164b8b85258e1fb586da6a09dc1eaad3038f60fe4bed8d0265","source":{"kind":"arxiv","id":"0812.2187","version":1},"source_aliases":[{"alias_kind":"arxiv","alias_value":"0812.2187","created_at":"2026-05-18T04:29:24Z"},{"alias_kind":"arxiv_version","alias_value":"0812.2187v1","created_at":"2026-05-18T04:29:24Z"},{"alias_kind":"doi","alias_value":"10.48550/arxiv.0812.2187","created_at":"2026-05-18T04:29:24Z"},{"alias_kind":"pith_short_12","alias_value":"QNG5ZP6EA5CB","created_at":"2026-05-18T12:25:57Z"},{"alias_kind":"pith_short_16","alias_value":"QNG5ZP6EA5CBMS4L","created_at":"2026-05-18T12:25:57Z"},{"alias_kind":"pith_short_8","alias_value":"QNG5ZP6E","created_at":"2026-05-18T12:25:57Z"}],"events":[{"event_type":"record_created","subject_pith_number":"pith:2008:QNG5ZP6EA5CBMS4LQUSY4H5VQ3","target":"record","payload":{"canonical_record":{"source":{"id":"0812.2187","kind":"arxiv","version":1},"metadata":{"license":"http://arxiv.org/licenses/nonexclusive-distrib/1.0/","primary_cat":"astro-ph","submitted_at":"2008-12-11T16:38:49Z","cross_cats_sorted":[],"title_canon_sha256":"61b0e1b3123b094b1dcb8a1d4cbd3d405badbccc1bcbdebfe7a46793c09d5ccd","abstract_canon_sha256":"b7b434c6dfd4c2bbeeacc764d0beb68ad18ae637c617274002089b1c61754089"},"schema_version":"1.0"},"canonical_sha256":"834ddcbfc40744164b8b85258e1fb586da6a09dc1eaad3038f60fe4bed8d0265","receipt":{"kind":"pith_receipt","key_id":"pith-v1-2026-05","algorithm":"ed25519","signed_at":"2026-05-18T04:29:24.590424Z","signature_b64":"8LeSUYBPchkNNozPwhjpwQOpiuLz0JYkLtKXpZosr2y1Kb1060GS95DjjiMqfi8u6ktosjUbyxSniiT1PwhZAg==","signed_message":"canonical_sha256_bytes","builder_version":"pith-number-builder-2026-05-17-v1","receipt_version":"0.3","canonical_sha256":"834ddcbfc40744164b8b85258e1fb586da6a09dc1eaad3038f60fe4bed8d0265","last_reissued_at":"2026-05-18T04:29:24.589849Z","signature_status":"signed_v1","first_computed_at":"2026-05-18T04:29:24.589849Z","public_key_fingerprint":"8d4b5ee74e4693bcd1df2446408b0d54"},"source_kind":"arxiv","source_id":"0812.2187","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":"2026-05-18T04:29:24Z","supersedes":[],"prev_event":null,"signature":{"signature_status":"signed_v1","algorithm":"ed25519","key_id":"pith-v1-2026-05","public_key_fingerprint":"8d4b5ee74e4693bcd1df2446408b0d54","signature_b64":"Qi5J7qLnWfBXtwSxsrDYImVctXElOqJLhM/AlUHHv2L9GNG5rle6aiFLIVodX9sFVh3asR/EhyfqH5C5ISU/Cw==","signed_message":"open_graph_event_sha256_bytes","signed_at":"2026-06-03T20:59:35.275045Z"},"content_sha256":"b87d7ea3ccd6c469fe9e1752f431894838efd1ada5193439d1408ae93f3121aa","schema_version":"1.0","event_id":"sha256:b87d7ea3ccd6c469fe9e1752f431894838efd1ada5193439d1408ae93f3121aa"},{"event_type":"graph_snapshot","subject_pith_number":"pith:2008:QNG5ZP6EA5CBMS4LQUSY4H5VQ3","target":"graph","payload":{"graph_snapshot":{"paper":{"title":"Star-forming cores embedded in a massive cold clump: Fragmentation, collapse and energetic outflows","license":"http://arxiv.org/licenses/nonexclusive-distrib/1.0/","headline":"","cross_cats":[],"primary_cat":"astro-ph","authors_text":"Dietrich Lemke, Germany), Martin Hennemann, Oliver Krause, Stephan M. Birkmann, Surhud More, Thomas Henning (MPIA Heidelberg, Yaroslav Pavlyuchenkov","submitted_at":"2008-12-11T16:38:49Z","abstract_excerpt":"The fate of massive cold clumps, their internal structure and collapse need to be characterised to understand the initial conditions for the formation of high-mass stars, stellar systems, and the origin of associations and clusters. We explore the onset of star formation in the 75 M_sun SMM1 clump in the region ISOSS J18364-0221 using infrared and (sub-)millimetre observations including interferometry. This contracting clump has fragmented into two compact cores SMM1 North and South of 0.05 pc radius, having masses of 15 and 10 M_sun, and luminosities of 20 and 180 L_sun. SMM1 South harbours a"},"claims":{"count":0,"items":[],"snapshot_sha256":"258153158e38e3291e3d48162225fcdb2d5a3ed65a07baac614ab91432fd4f57"},"source":{"id":"0812.2187","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":"2026-05-18T04:29:24Z","supersedes":[],"prev_event":null,"signature":{"signature_status":"signed_v1","algorithm":"ed25519","key_id":"pith-v1-2026-05","public_key_fingerprint":"8d4b5ee74e4693bcd1df2446408b0d54","signature_b64":"OBLFWy5u+2NYr6efA5DuOTmdfBliPGTxjX8ER564kKgwoVUgDFkRnr1iM3NLUQ2frO/3i0zDBDss7KJZzz6bDA==","signed_message":"open_graph_event_sha256_bytes","signed_at":"2026-06-03T20:59:35.275681Z"},"content_sha256":"95c2eafcad508acde4c781a3fb8f663928203a553833426306d882e1b2659e77","schema_version":"1.0","event_id":"sha256:95c2eafcad508acde4c781a3fb8f663928203a553833426306d882e1b2659e77"}],"timestamp_proofs":[],"mirror_hints":[{"mirror_type":"https","name":"Pith Resolver","base_url":"https://pith.science","bundle_url":"https://pith.science/pith/QNG5ZP6EA5CBMS4LQUSY4H5VQ3/bundle.json","state_url":"https://pith.science/pith/QNG5ZP6EA5CBMS4LQUSY4H5VQ3/state.json","well_known_bundle_url":"https://pith.science/.well-known/pith/QNG5ZP6EA5CBMS4LQUSY4H5VQ3/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":"2026-06-03T20:59:35Z","links":{"resolver":"https://pith.science/pith/QNG5ZP6EA5CBMS4LQUSY4H5VQ3","bundle":"https://pith.science/pith/QNG5ZP6EA5CBMS4LQUSY4H5VQ3/bundle.json","state":"https://pith.science/pith/QNG5ZP6EA5CBMS4LQUSY4H5VQ3/state.json","well_known_bundle":"https://pith.science/.well-known/pith/QNG5ZP6EA5CBMS4LQUSY4H5VQ3/bundle.json"},"state":{"state_type":"pith_open_graph_state","state_version":"1.0","pith_number":"pith:2008:QNG5ZP6EA5CBMS4LQUSY4H5VQ3","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":"b7b434c6dfd4c2bbeeacc764d0beb68ad18ae637c617274002089b1c61754089","cross_cats_sorted":[],"license":"http://arxiv.org/licenses/nonexclusive-distrib/1.0/","primary_cat":"astro-ph","submitted_at":"2008-12-11T16:38:49Z","title_canon_sha256":"61b0e1b3123b094b1dcb8a1d4cbd3d405badbccc1bcbdebfe7a46793c09d5ccd"},"schema_version":"1.0","source":{"id":"0812.2187","kind":"arxiv","version":1}},"source_aliases":[{"alias_kind":"arxiv","alias_value":"0812.2187","created_at":"2026-05-18T04:29:24Z"},{"alias_kind":"arxiv_version","alias_value":"0812.2187v1","created_at":"2026-05-18T04:29:24Z"},{"alias_kind":"doi","alias_value":"10.48550/arxiv.0812.2187","created_at":"2026-05-18T04:29:24Z"},{"alias_kind":"pith_short_12","alias_value":"QNG5ZP6EA5CB","created_at":"2026-05-18T12:25:57Z"},{"alias_kind":"pith_short_16","alias_value":"QNG5ZP6EA5CBMS4L","created_at":"2026-05-18T12:25:57Z"},{"alias_kind":"pith_short_8","alias_value":"QNG5ZP6E","created_at":"2026-05-18T12:25:57Z"}],"graph_snapshots":[{"event_id":"sha256:95c2eafcad508acde4c781a3fb8f663928203a553833426306d882e1b2659e77","target":"graph","created_at":"2026-05-18T04:29:24Z","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 fate of massive cold clumps, their internal structure and collapse need to be characterised to understand the initial conditions for the formation of high-mass stars, stellar systems, and the origin of associations and clusters. We explore the onset of star formation in the 75 M_sun SMM1 clump in the region ISOSS J18364-0221 using infrared and (sub-)millimetre observations including interferometry. This contracting clump has fragmented into two compact cores SMM1 North and South of 0.05 pc radius, having masses of 15 and 10 M_sun, and luminosities of 20 and 180 L_sun. SMM1 South harbours a","authors_text":"Dietrich Lemke, Germany), Martin Hennemann, Oliver Krause, Stephan M. Birkmann, Surhud More, Thomas Henning (MPIA Heidelberg, Yaroslav Pavlyuchenkov","cross_cats":[],"headline":"","license":"http://arxiv.org/licenses/nonexclusive-distrib/1.0/","primary_cat":"astro-ph","submitted_at":"2008-12-11T16:38:49Z","title":"Star-forming cores embedded in a massive cold clump: Fragmentation, collapse and energetic outflows"},"references":{"count":0,"internal_anchors":0,"resolved_work":0,"sample":[],"snapshot_sha256":"258153158e38e3291e3d48162225fcdb2d5a3ed65a07baac614ab91432fd4f57"},"source":{"id":"0812.2187","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:b87d7ea3ccd6c469fe9e1752f431894838efd1ada5193439d1408ae93f3121aa","target":"record","created_at":"2026-05-18T04:29:24Z","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":"b7b434c6dfd4c2bbeeacc764d0beb68ad18ae637c617274002089b1c61754089","cross_cats_sorted":[],"license":"http://arxiv.org/licenses/nonexclusive-distrib/1.0/","primary_cat":"astro-ph","submitted_at":"2008-12-11T16:38:49Z","title_canon_sha256":"61b0e1b3123b094b1dcb8a1d4cbd3d405badbccc1bcbdebfe7a46793c09d5ccd"},"schema_version":"1.0","source":{"id":"0812.2187","kind":"arxiv","version":1}},"canonical_sha256":"834ddcbfc40744164b8b85258e1fb586da6a09dc1eaad3038f60fe4bed8d0265","receipt":{"algorithm":"ed25519","builder_version":"pith-number-builder-2026-05-17-v1","canonical_sha256":"834ddcbfc40744164b8b85258e1fb586da6a09dc1eaad3038f60fe4bed8d0265","first_computed_at":"2026-05-18T04:29:24.589849Z","key_id":"pith-v1-2026-05","kind":"pith_receipt","last_reissued_at":"2026-05-18T04:29:24.589849Z","public_key_fingerprint":"8d4b5ee74e4693bcd1df2446408b0d54","receipt_version":"0.3","signature_b64":"8LeSUYBPchkNNozPwhjpwQOpiuLz0JYkLtKXpZosr2y1Kb1060GS95DjjiMqfi8u6ktosjUbyxSniiT1PwhZAg==","signature_status":"signed_v1","signed_at":"2026-05-18T04:29:24.590424Z","signed_message":"canonical_sha256_bytes"},"source_id":"0812.2187","source_kind":"arxiv","source_version":1}}},"equivocations":[],"invalid_events":[],"applied_event_ids":["sha256:b87d7ea3ccd6c469fe9e1752f431894838efd1ada5193439d1408ae93f3121aa","sha256:95c2eafcad508acde4c781a3fb8f663928203a553833426306d882e1b2659e77"],"state_sha256":"0597b634de69bbe7685b2a6cba6aeff29b1aedfb11adbe3b4657e1ed32bce21d"},"bundle_signature":{"signature_status":"signed_v1","algorithm":"ed25519","key_id":"pith-v1-2026-05","public_key_fingerprint":"8d4b5ee74e4693bcd1df2446408b0d54","signature_b64":"g85Dq0Jka3ubPoJM3+0wkDaTIkvxiW5dFU4zCxQ+YBd9nGEaAP3eTaw5h8khyz0d6FSY/bZRYLme4BwwhIv1Bw==","signed_message":"bundle_sha256_bytes","signed_at":"2026-06-03T20:59:35.278600Z","bundle_sha256":"af226a5839cd03bf29a27607b99289ee2fd309655bf5f340de60a38f3128d6e1"}}