{"bundle_type":"pith_open_graph_bundle","bundle_version":"1.0","pith_number":"pith:2021:DUCVGLZTTMUXLXIHU3P6LP62VL","short_pith_number":"pith:DUCVGLZT","canonical_record":{"source":{"id":"2104.04007","kind":"arxiv","version":1},"metadata":{"license":"http://arxiv.org/licenses/nonexclusive-distrib/1.0/","primary_cat":"astro-ph.GA","submitted_at":"2021-04-08T18:49:32Z","cross_cats_sorted":[],"title_canon_sha256":"9d585e72ec68788c95b8fd7a47abc5f3255be44464aee110cbdc7b28f1074033","abstract_canon_sha256":"d381b5c3f0288c355028530983f3f73f69b3131621e33a431d96f030f45355b5"},"schema_version":"1.0"},"canonical_sha256":"1d05532f339b2975dd07a6dfe5bfdaaae049267259658ce602c10c3888a2828c","source":{"kind":"arxiv","id":"2104.04007","version":1},"source_aliases":[{"alias_kind":"arxiv","alias_value":"2104.04007","created_at":"2026-07-05T02:39:17Z"},{"alias_kind":"arxiv_version","alias_value":"2104.04007v1","created_at":"2026-07-05T02:39:17Z"},{"alias_kind":"doi","alias_value":"10.48550/arxiv.2104.04007","created_at":"2026-07-05T02:39:17Z"},{"alias_kind":"pith_short_12","alias_value":"DUCVGLZTTMUX","created_at":"2026-07-05T02:39:17Z"},{"alias_kind":"pith_short_16","alias_value":"DUCVGLZTTMUXLXIH","created_at":"2026-07-05T02:39:17Z"},{"alias_kind":"pith_short_8","alias_value":"DUCVGLZT","created_at":"2026-07-05T02:39:17Z"}],"events":[{"event_type":"record_created","subject_pith_number":"pith:2021:DUCVGLZTTMUXLXIHU3P6LP62VL","target":"record","payload":{"canonical_record":{"source":{"id":"2104.04007","kind":"arxiv","version":1},"metadata":{"license":"http://arxiv.org/licenses/nonexclusive-distrib/1.0/","primary_cat":"astro-ph.GA","submitted_at":"2021-04-08T18:49:32Z","cross_cats_sorted":[],"title_canon_sha256":"9d585e72ec68788c95b8fd7a47abc5f3255be44464aee110cbdc7b28f1074033","abstract_canon_sha256":"d381b5c3f0288c355028530983f3f73f69b3131621e33a431d96f030f45355b5"},"schema_version":"1.0"},"canonical_sha256":"1d05532f339b2975dd07a6dfe5bfdaaae049267259658ce602c10c3888a2828c","receipt":{"kind":"pith_receipt","key_id":"pith-v1-2026-05","algorithm":"ed25519","signed_at":"2026-07-05T02:39:17.610228Z","signature_b64":"9JiT6CFtc3gLGSSMksqOlV/T/kF/1ecs561nLr+Aphskz97N42OeNONgg6r71uSxo7Cu3mC/kR3Bh2hbpTjeDA==","signed_message":"canonical_sha256_bytes","builder_version":"pith-number-builder-2026-05-17-v1","receipt_version":"0.3","canonical_sha256":"1d05532f339b2975dd07a6dfe5bfdaaae049267259658ce602c10c3888a2828c","last_reissued_at":"2026-07-05T02:39:17.609833Z","signature_status":"signed_v1","first_computed_at":"2026-07-05T02:39:17.609833Z","public_key_fingerprint":"8d4b5ee74e4693bcd1df2446408b0d54"},"source_kind":"arxiv","source_id":"2104.04007","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":"2026-07-05T02:39:17Z","supersedes":[],"prev_event":null,"signature":{"signature_status":"signed_v1","algorithm":"ed25519","key_id":"pith-v1-2026-05","public_key_fingerprint":"8d4b5ee74e4693bcd1df2446408b0d54","signature_b64":"kYGy7eB7rbR/Fpk8rret4WD6cOVD41tiK0PgxBGsUrGiG36h5hQhdm8klt7SRLrdVLyrq4YVpCi86r0msGmQAA==","signed_message":"open_graph_event_sha256_bytes","signed_at":"2026-08-02T12:46:26.816329Z"},"content_sha256":"ff6cc22bc2f34173db7ab1b8e97665293241b217ccd8d44dd1a4d4a4c06cdfcc","schema_version":"1.0","event_id":"sha256:ff6cc22bc2f34173db7ab1b8e97665293241b217ccd8d44dd1a4d4a4c06cdfcc"},{"event_type":"graph_snapshot","subject_pith_number":"pith:2021:DUCVGLZTTMUXLXIHU3P6LP62VL","target":"graph","payload":{"graph_snapshot":{"paper":{"title":"A PPMAP analysis of the filamentary structures in Ophiuchus L1688 and L1689","license":"http://arxiv.org/licenses/nonexclusive-distrib/1.0/","headline":"","cross_cats":[],"primary_cat":"astro-ph.GA","authors_text":"A. D. P. Howard, A. P. Whitworth, K. A. Marsh, M. J. Griffin, M. W. L. Smith","submitted_at":"2021-04-08T18:49:32Z","abstract_excerpt":"We use the PPMAP (Point Process MAPping) algorithm to re-analyse the \\textit{Herschel} and SCUBA-2 observations of the L1688 and L1689 sub-regions of the Ophiuchus molecular cloud. PPMAP delivers maps with high resolution (here $14''$, corresponding to $\\sim 0.01\\,{\\rm pc}$ at $\\sim 140\\,{\\rm pc}$), by using the observations at their native resolutions. PPMAP also delivers more accurate dust optical depths, by distinguishing dust of different types and at different temperatures. The filaments and prestellar cores almost all lie in regions with $N_{\\rm H_2}\\gtrsim 7\\times 10^{21}\\,{\\rm cm}^{-2}"},"claims":{"count":0,"items":[],"snapshot_sha256":"258153158e38e3291e3d48162225fcdb2d5a3ed65a07baac614ab91432fd4f57"},"source":{"id":"2104.04007","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":""},"integrity":{"clean":true,"summary":{"advisory":0,"critical":0,"by_detector":{},"informational":0},"endpoint":"/pith/2104.04007/integrity.json","findings":[],"available":true,"detectors_run":[],"snapshot_sha256":"c28c3603d3b5d939e8dc4c7e95fa8dfce3d595e45f758748cecf8e644a296938"},"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":"2026-07-05T02:39:17Z","supersedes":[],"prev_event":null,"signature":{"signature_status":"signed_v1","algorithm":"ed25519","key_id":"pith-v1-2026-05","public_key_fingerprint":"8d4b5ee74e4693bcd1df2446408b0d54","signature_b64":"Tn5J5FwCrm5rb0LT7XvBlh7db3FetVW9LiiJ3rKgxsuJCg8Bm/LEIhX1KeNFkklGnn2wqMz4KT4vEASch3mlAg==","signed_message":"open_graph_event_sha256_bytes","signed_at":"2026-08-02T12:46:26.816856Z"},"content_sha256":"246e81e03d3694a4ebadc075ac3eb9523d2a618a846b004d873db772732f0c42","schema_version":"1.0","event_id":"sha256:246e81e03d3694a4ebadc075ac3eb9523d2a618a846b004d873db772732f0c42"}],"timestamp_proofs":[],"mirror_hints":[{"mirror_type":"https","name":"Pith Resolver","base_url":"https://pith.science","bundle_url":"https://pith.science/pith/DUCVGLZTTMUXLXIHU3P6LP62VL/bundle.json","state_url":"https://pith.science/pith/DUCVGLZTTMUXLXIHU3P6LP62VL/state.json","well_known_bundle_url":"https://pith.science/.well-known/pith/DUCVGLZTTMUXLXIHU3P6LP62VL/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":"2026-08-02T12:46:26Z","links":{"resolver":"https://pith.science/pith/DUCVGLZTTMUXLXIHU3P6LP62VL","bundle":"https://pith.science/pith/DUCVGLZTTMUXLXIHU3P6LP62VL/bundle.json","state":"https://pith.science/pith/DUCVGLZTTMUXLXIHU3P6LP62VL/state.json","well_known_bundle":"https://pith.science/.well-known/pith/DUCVGLZTTMUXLXIHU3P6LP62VL/bundle.json"},"state":{"state_type":"pith_open_graph_state","state_version":"1.0","pith_number":"pith:2021:DUCVGLZTTMUXLXIHU3P6LP62VL","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":"d381b5c3f0288c355028530983f3f73f69b3131621e33a431d96f030f45355b5","cross_cats_sorted":[],"license":"http://arxiv.org/licenses/nonexclusive-distrib/1.0/","primary_cat":"astro-ph.GA","submitted_at":"2021-04-08T18:49:32Z","title_canon_sha256":"9d585e72ec68788c95b8fd7a47abc5f3255be44464aee110cbdc7b28f1074033"},"schema_version":"1.0","source":{"id":"2104.04007","kind":"arxiv","version":1}},"source_aliases":[{"alias_kind":"arxiv","alias_value":"2104.04007","created_at":"2026-07-05T02:39:17Z"},{"alias_kind":"arxiv_version","alias_value":"2104.04007v1","created_at":"2026-07-05T02:39:17Z"},{"alias_kind":"doi","alias_value":"10.48550/arxiv.2104.04007","created_at":"2026-07-05T02:39:17Z"},{"alias_kind":"pith_short_12","alias_value":"DUCVGLZTTMUX","created_at":"2026-07-05T02:39:17Z"},{"alias_kind":"pith_short_16","alias_value":"DUCVGLZTTMUXLXIH","created_at":"2026-07-05T02:39:17Z"},{"alias_kind":"pith_short_8","alias_value":"DUCVGLZT","created_at":"2026-07-05T02:39:17Z"}],"graph_snapshots":[{"event_id":"sha256:246e81e03d3694a4ebadc075ac3eb9523d2a618a846b004d873db772732f0c42","target":"graph","created_at":"2026-07-05T02:39:17Z","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"},"integrity":{"available":true,"clean":true,"detectors_run":[],"endpoint":"/pith/2104.04007/integrity.json","findings":[],"snapshot_sha256":"c28c3603d3b5d939e8dc4c7e95fa8dfce3d595e45f758748cecf8e644a296938","summary":{"advisory":0,"by_detector":{},"critical":0,"informational":0}},"paper":{"abstract_excerpt":"We use the PPMAP (Point Process MAPping) algorithm to re-analyse the \\textit{Herschel} and SCUBA-2 observations of the L1688 and L1689 sub-regions of the Ophiuchus molecular cloud. PPMAP delivers maps with high resolution (here $14''$, corresponding to $\\sim 0.01\\,{\\rm pc}$ at $\\sim 140\\,{\\rm pc}$), by using the observations at their native resolutions. PPMAP also delivers more accurate dust optical depths, by distinguishing dust of different types and at different temperatures. The filaments and prestellar cores almost all lie in regions with $N_{\\rm H_2}\\gtrsim 7\\times 10^{21}\\,{\\rm cm}^{-2}","authors_text":"A. D. P. Howard, A. P. Whitworth, K. A. Marsh, M. J. Griffin, M. W. L. Smith","cross_cats":[],"headline":"","license":"http://arxiv.org/licenses/nonexclusive-distrib/1.0/","primary_cat":"astro-ph.GA","submitted_at":"2021-04-08T18:49:32Z","title":"A PPMAP analysis of the filamentary structures in Ophiuchus L1688 and L1689"},"references":{"count":0,"internal_anchors":0,"resolved_work":0,"sample":[],"snapshot_sha256":"258153158e38e3291e3d48162225fcdb2d5a3ed65a07baac614ab91432fd4f57"},"source":{"id":"2104.04007","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:ff6cc22bc2f34173db7ab1b8e97665293241b217ccd8d44dd1a4d4a4c06cdfcc","target":"record","created_at":"2026-07-05T02:39:17Z","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":"d381b5c3f0288c355028530983f3f73f69b3131621e33a431d96f030f45355b5","cross_cats_sorted":[],"license":"http://arxiv.org/licenses/nonexclusive-distrib/1.0/","primary_cat":"astro-ph.GA","submitted_at":"2021-04-08T18:49:32Z","title_canon_sha256":"9d585e72ec68788c95b8fd7a47abc5f3255be44464aee110cbdc7b28f1074033"},"schema_version":"1.0","source":{"id":"2104.04007","kind":"arxiv","version":1}},"canonical_sha256":"1d05532f339b2975dd07a6dfe5bfdaaae049267259658ce602c10c3888a2828c","receipt":{"algorithm":"ed25519","builder_version":"pith-number-builder-2026-05-17-v1","canonical_sha256":"1d05532f339b2975dd07a6dfe5bfdaaae049267259658ce602c10c3888a2828c","first_computed_at":"2026-07-05T02:39:17.609833Z","key_id":"pith-v1-2026-05","kind":"pith_receipt","last_reissued_at":"2026-07-05T02:39:17.609833Z","public_key_fingerprint":"8d4b5ee74e4693bcd1df2446408b0d54","receipt_version":"0.3","signature_b64":"9JiT6CFtc3gLGSSMksqOlV/T/kF/1ecs561nLr+Aphskz97N42OeNONgg6r71uSxo7Cu3mC/kR3Bh2hbpTjeDA==","signature_status":"signed_v1","signed_at":"2026-07-05T02:39:17.610228Z","signed_message":"canonical_sha256_bytes"},"source_id":"2104.04007","source_kind":"arxiv","source_version":1}}},"equivocations":[],"invalid_events":[],"applied_event_ids":["sha256:ff6cc22bc2f34173db7ab1b8e97665293241b217ccd8d44dd1a4d4a4c06cdfcc","sha256:246e81e03d3694a4ebadc075ac3eb9523d2a618a846b004d873db772732f0c42"],"state_sha256":"e87c1540b3d5cfcbb3ed3985fbe6a62c0ad4e400050bd3ec63a6e393063bfa7f"},"bundle_signature":{"signature_status":"signed_v1","algorithm":"ed25519","key_id":"pith-v1-2026-05","public_key_fingerprint":"8d4b5ee74e4693bcd1df2446408b0d54","signature_b64":"7TmHA1MiqSogI5FCDYzDuWLRXBbgy5qT69kR0kkXqOtszRD4yGN1o2cEiUg40kS1mDVvdIA4/pwaMENUO3fuCA==","signed_message":"bundle_sha256_bytes","signed_at":"2026-08-02T12:46:26.821449Z","bundle_sha256":"ab90dc8ec1bf53b50750ccd26a96993f989976498f71e30f02c6e781f61b9a94"}}