{"bundle_type":"pith_open_graph_bundle","bundle_version":"1.0","pith_number":"pith:2015:B2PDELHSX6XXZLOTJTHB73L5AW","short_pith_number":"pith:B2PDELHS","canonical_record":{"source":{"id":"1505.06212","kind":"arxiv","version":1},"metadata":{"license":"http://arxiv.org/licenses/nonexclusive-distrib/1.0/","primary_cat":"astro-ph.SR","submitted_at":"2015-05-22T20:01:46Z","cross_cats_sorted":["astro-ph.GA"],"title_canon_sha256":"e603c9533871640f9e8335eaec0ec778fd6f8224776b05143797007a845a47dd","abstract_canon_sha256":"f95bfa3311471632f5f93abcb9a7b97202ac74b6a9efca274c13a4d789dd6de4"},"schema_version":"1.0"},"canonical_sha256":"0e9e322cf2bfaf7cadd34cce1fed7d058bb4d47374e34f08cc97d08c4915a3cf","source":{"kind":"arxiv","id":"1505.06212","version":1},"source_aliases":[{"alias_kind":"arxiv","alias_value":"1505.06212","created_at":"2026-05-18T01:35:09Z"},{"alias_kind":"arxiv_version","alias_value":"1505.06212v1","created_at":"2026-05-18T01:35:09Z"},{"alias_kind":"doi","alias_value":"10.48550/arxiv.1505.06212","created_at":"2026-05-18T01:35:09Z"},{"alias_kind":"pith_short_12","alias_value":"B2PDELHSX6XX","created_at":"2026-05-18T12:29:14Z"},{"alias_kind":"pith_short_16","alias_value":"B2PDELHSX6XXZLOT","created_at":"2026-05-18T12:29:14Z"},{"alias_kind":"pith_short_8","alias_value":"B2PDELHS","created_at":"2026-05-18T12:29:14Z"}],"events":[{"event_type":"record_created","subject_pith_number":"pith:2015:B2PDELHSX6XXZLOTJTHB73L5AW","target":"record","payload":{"canonical_record":{"source":{"id":"1505.06212","kind":"arxiv","version":1},"metadata":{"license":"http://arxiv.org/licenses/nonexclusive-distrib/1.0/","primary_cat":"astro-ph.SR","submitted_at":"2015-05-22T20:01:46Z","cross_cats_sorted":["astro-ph.GA"],"title_canon_sha256":"e603c9533871640f9e8335eaec0ec778fd6f8224776b05143797007a845a47dd","abstract_canon_sha256":"f95bfa3311471632f5f93abcb9a7b97202ac74b6a9efca274c13a4d789dd6de4"},"schema_version":"1.0"},"canonical_sha256":"0e9e322cf2bfaf7cadd34cce1fed7d058bb4d47374e34f08cc97d08c4915a3cf","receipt":{"kind":"pith_receipt","key_id":"pith-v1-2026-05","algorithm":"ed25519","signed_at":"2026-05-18T01:35:09.808262Z","signature_b64":"bX4Yrly0Q3RN94irg+/AeGt9+J5CLNnK2GJx250aKoX01gFbO4PxTvI6+68chrB4wKBUussi2ynOldI68CSKDg==","signed_message":"canonical_sha256_bytes","builder_version":"pith-number-builder-2026-05-17-v1","receipt_version":"0.3","canonical_sha256":"0e9e322cf2bfaf7cadd34cce1fed7d058bb4d47374e34f08cc97d08c4915a3cf","last_reissued_at":"2026-05-18T01:35:09.807566Z","signature_status":"signed_v1","first_computed_at":"2026-05-18T01:35:09.807566Z","public_key_fingerprint":"8d4b5ee74e4693bcd1df2446408b0d54"},"source_kind":"arxiv","source_id":"1505.06212","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":"2026-05-18T01:35:09Z","supersedes":[],"prev_event":null,"signature":{"signature_status":"signed_v1","algorithm":"ed25519","key_id":"pith-v1-2026-05","public_key_fingerprint":"8d4b5ee74e4693bcd1df2446408b0d54","signature_b64":"9CoxtLaUMBhZFqc6hPSEilfRgV1zBMAKJKi/Lq/VDpPkaOGwkkauEphggyStWB0W1USibQzbWDAdXm94bsQ/DQ==","signed_message":"open_graph_event_sha256_bytes","signed_at":"2026-05-28T17:22:54.241802Z"},"content_sha256":"c31f947beb70b1d93175864b4d020f39cda612ff9aa9fac7d883c250d589789e","schema_version":"1.0","event_id":"sha256:c31f947beb70b1d93175864b4d020f39cda612ff9aa9fac7d883c250d589789e"},{"event_type":"graph_snapshot","subject_pith_number":"pith:2015:B2PDELHSX6XXZLOTJTHB73L5AW","target":"graph","payload":{"graph_snapshot":{"paper":{"title":"Smoke in the Pipe Nebula: dust emission and grain growth in the starless core FeSt 1-457","license":"http://arxiv.org/licenses/nonexclusive-distrib/1.0/","headline":"","cross_cats":["astro-ph.GA"],"primary_cat":"astro-ph.SR","authors_text":"Carlos Roman-Zu\\~niga, Charles J. Lada, Jan Forbrich, Jo\\~ao Alves, Marco Lombardi","submitted_at":"2015-05-22T20:01:46Z","abstract_excerpt":"(abridged) Methods: We derive maps of submillimeter dust optical depth and effective dust temperature from Herschel data that were calibrated against Planck. After calibration, we then fit a modified blackbody to the long-wavelength Herschel data, using the Planck-derived dust opacity spectral index beta, derived on scales of 30' (or ~1 pc). We use this model to make predictions of the submillimeter flux density at 850 micron, and we compare these in turn with APEX-Laboca observations. Results: A comparison of the submillimeter dust optical depth and near-infrared extinction data reveals evide"},"claims":{"count":0,"items":[],"snapshot_sha256":"258153158e38e3291e3d48162225fcdb2d5a3ed65a07baac614ab91432fd4f57"},"source":{"id":"1505.06212","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":"2026-05-18T01:35:09Z","supersedes":[],"prev_event":null,"signature":{"signature_status":"signed_v1","algorithm":"ed25519","key_id":"pith-v1-2026-05","public_key_fingerprint":"8d4b5ee74e4693bcd1df2446408b0d54","signature_b64":"AQJb/LxbTHqIN1mgO6H4k6O1haCWTcq5cA0XJirO4g4CHu0wkeI6HLZCuawZA04LpiPFgVoawBdkGc+9Ep2rDQ==","signed_message":"open_graph_event_sha256_bytes","signed_at":"2026-05-28T17:22:54.242159Z"},"content_sha256":"c0963853ab4d9756950f8e4782db74219b1ade9ffff475e17b6c01220ca5344e","schema_version":"1.0","event_id":"sha256:c0963853ab4d9756950f8e4782db74219b1ade9ffff475e17b6c01220ca5344e"}],"timestamp_proofs":[],"mirror_hints":[{"mirror_type":"https","name":"Pith Resolver","base_url":"https://pith.science","bundle_url":"https://pith.science/pith/B2PDELHSX6XXZLOTJTHB73L5AW/bundle.json","state_url":"https://pith.science/pith/B2PDELHSX6XXZLOTJTHB73L5AW/state.json","well_known_bundle_url":"https://pith.science/.well-known/pith/B2PDELHSX6XXZLOTJTHB73L5AW/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":"2026-05-28T17:22:54Z","links":{"resolver":"https://pith.science/pith/B2PDELHSX6XXZLOTJTHB73L5AW","bundle":"https://pith.science/pith/B2PDELHSX6XXZLOTJTHB73L5AW/bundle.json","state":"https://pith.science/pith/B2PDELHSX6XXZLOTJTHB73L5AW/state.json","well_known_bundle":"https://pith.science/.well-known/pith/B2PDELHSX6XXZLOTJTHB73L5AW/bundle.json"},"state":{"state_type":"pith_open_graph_state","state_version":"1.0","pith_number":"pith:2015:B2PDELHSX6XXZLOTJTHB73L5AW","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":"f95bfa3311471632f5f93abcb9a7b97202ac74b6a9efca274c13a4d789dd6de4","cross_cats_sorted":["astro-ph.GA"],"license":"http://arxiv.org/licenses/nonexclusive-distrib/1.0/","primary_cat":"astro-ph.SR","submitted_at":"2015-05-22T20:01:46Z","title_canon_sha256":"e603c9533871640f9e8335eaec0ec778fd6f8224776b05143797007a845a47dd"},"schema_version":"1.0","source":{"id":"1505.06212","kind":"arxiv","version":1}},"source_aliases":[{"alias_kind":"arxiv","alias_value":"1505.06212","created_at":"2026-05-18T01:35:09Z"},{"alias_kind":"arxiv_version","alias_value":"1505.06212v1","created_at":"2026-05-18T01:35:09Z"},{"alias_kind":"doi","alias_value":"10.48550/arxiv.1505.06212","created_at":"2026-05-18T01:35:09Z"},{"alias_kind":"pith_short_12","alias_value":"B2PDELHSX6XX","created_at":"2026-05-18T12:29:14Z"},{"alias_kind":"pith_short_16","alias_value":"B2PDELHSX6XXZLOT","created_at":"2026-05-18T12:29:14Z"},{"alias_kind":"pith_short_8","alias_value":"B2PDELHS","created_at":"2026-05-18T12:29:14Z"}],"graph_snapshots":[{"event_id":"sha256:c0963853ab4d9756950f8e4782db74219b1ade9ffff475e17b6c01220ca5344e","target":"graph","created_at":"2026-05-18T01:35:09Z","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":"(abridged) Methods: We derive maps of submillimeter dust optical depth and effective dust temperature from Herschel data that were calibrated against Planck. After calibration, we then fit a modified blackbody to the long-wavelength Herschel data, using the Planck-derived dust opacity spectral index beta, derived on scales of 30' (or ~1 pc). We use this model to make predictions of the submillimeter flux density at 850 micron, and we compare these in turn with APEX-Laboca observations. Results: A comparison of the submillimeter dust optical depth and near-infrared extinction data reveals evide","authors_text":"Carlos Roman-Zu\\~niga, Charles J. Lada, Jan Forbrich, Jo\\~ao Alves, Marco Lombardi","cross_cats":["astro-ph.GA"],"headline":"","license":"http://arxiv.org/licenses/nonexclusive-distrib/1.0/","primary_cat":"astro-ph.SR","submitted_at":"2015-05-22T20:01:46Z","title":"Smoke in the Pipe Nebula: dust emission and grain growth in the starless core FeSt 1-457"},"references":{"count":0,"internal_anchors":0,"resolved_work":0,"sample":[],"snapshot_sha256":"258153158e38e3291e3d48162225fcdb2d5a3ed65a07baac614ab91432fd4f57"},"source":{"id":"1505.06212","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:c31f947beb70b1d93175864b4d020f39cda612ff9aa9fac7d883c250d589789e","target":"record","created_at":"2026-05-18T01:35:09Z","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":"f95bfa3311471632f5f93abcb9a7b97202ac74b6a9efca274c13a4d789dd6de4","cross_cats_sorted":["astro-ph.GA"],"license":"http://arxiv.org/licenses/nonexclusive-distrib/1.0/","primary_cat":"astro-ph.SR","submitted_at":"2015-05-22T20:01:46Z","title_canon_sha256":"e603c9533871640f9e8335eaec0ec778fd6f8224776b05143797007a845a47dd"},"schema_version":"1.0","source":{"id":"1505.06212","kind":"arxiv","version":1}},"canonical_sha256":"0e9e322cf2bfaf7cadd34cce1fed7d058bb4d47374e34f08cc97d08c4915a3cf","receipt":{"algorithm":"ed25519","builder_version":"pith-number-builder-2026-05-17-v1","canonical_sha256":"0e9e322cf2bfaf7cadd34cce1fed7d058bb4d47374e34f08cc97d08c4915a3cf","first_computed_at":"2026-05-18T01:35:09.807566Z","key_id":"pith-v1-2026-05","kind":"pith_receipt","last_reissued_at":"2026-05-18T01:35:09.807566Z","public_key_fingerprint":"8d4b5ee74e4693bcd1df2446408b0d54","receipt_version":"0.3","signature_b64":"bX4Yrly0Q3RN94irg+/AeGt9+J5CLNnK2GJx250aKoX01gFbO4PxTvI6+68chrB4wKBUussi2ynOldI68CSKDg==","signature_status":"signed_v1","signed_at":"2026-05-18T01:35:09.808262Z","signed_message":"canonical_sha256_bytes"},"source_id":"1505.06212","source_kind":"arxiv","source_version":1}}},"equivocations":[],"invalid_events":[],"applied_event_ids":["sha256:c31f947beb70b1d93175864b4d020f39cda612ff9aa9fac7d883c250d589789e","sha256:c0963853ab4d9756950f8e4782db74219b1ade9ffff475e17b6c01220ca5344e"],"state_sha256":"d9bb0716e9225efe24dd9a1b1f518e90a92a9dee6bc4bb0e1a4e578b0b3f3f43"},"bundle_signature":{"signature_status":"signed_v1","algorithm":"ed25519","key_id":"pith-v1-2026-05","public_key_fingerprint":"8d4b5ee74e4693bcd1df2446408b0d54","signature_b64":"wBLmdAtzeZ5pmJDVd43H5vI/O0AXG0f6M8w71wdCARIBbmrZTrCYfyNiN544L1FSHY9tPgE52gPDwdaFTdFsAg==","signed_message":"bundle_sha256_bytes","signed_at":"2026-05-28T17:22:54.244266Z","bundle_sha256":"5f281f1f60da208892487b35f6093b7362ce38bc05fadbf1e2cf72782f6b3e9e"}}