{"bundle_type":"pith_open_graph_bundle","bundle_version":"1.0","pith_number":"pith:2020:UKYYXPWRG6UKZW5FPKYA2SMWH6","short_pith_number":"pith:UKYYXPWR","canonical_record":{"source":{"id":"2011.07974","kind":"arxiv","version":2},"metadata":{"license":"http://arxiv.org/licenses/nonexclusive-distrib/1.0/","primary_cat":"astro-ph.IM","submitted_at":"2020-11-16T14:10:50Z","cross_cats_sorted":[],"title_canon_sha256":"e8640607ea891b1b4467e21fcfadb185f3886c70388ad7c050fe55e8b75b2263","abstract_canon_sha256":"c41853246a75c2493c7306224d7f8eb884cba103f8e39b73d03f491029d129be"},"schema_version":"1.0"},"canonical_sha256":"a2b18bbed137a8acdba57ab00d49963f8cb4dbc1abaa0b05bee7a91c24720abb","source":{"kind":"arxiv","id":"2011.07974","version":2},"source_aliases":[{"alias_kind":"arxiv","alias_value":"2011.07974","created_at":"2026-07-05T02:09:52Z"},{"alias_kind":"arxiv_version","alias_value":"2011.07974v2","created_at":"2026-07-05T02:09:52Z"},{"alias_kind":"doi","alias_value":"10.48550/arxiv.2011.07974","created_at":"2026-07-05T02:09:52Z"},{"alias_kind":"pith_short_12","alias_value":"UKYYXPWRG6UK","created_at":"2026-07-05T02:09:52Z"},{"alias_kind":"pith_short_16","alias_value":"UKYYXPWRG6UKZW5F","created_at":"2026-07-05T02:09:52Z"},{"alias_kind":"pith_short_8","alias_value":"UKYYXPWR","created_at":"2026-07-05T02:09:52Z"}],"events":[{"event_type":"record_created","subject_pith_number":"pith:2020:UKYYXPWRG6UKZW5FPKYA2SMWH6","target":"record","payload":{"canonical_record":{"source":{"id":"2011.07974","kind":"arxiv","version":2},"metadata":{"license":"http://arxiv.org/licenses/nonexclusive-distrib/1.0/","primary_cat":"astro-ph.IM","submitted_at":"2020-11-16T14:10:50Z","cross_cats_sorted":[],"title_canon_sha256":"e8640607ea891b1b4467e21fcfadb185f3886c70388ad7c050fe55e8b75b2263","abstract_canon_sha256":"c41853246a75c2493c7306224d7f8eb884cba103f8e39b73d03f491029d129be"},"schema_version":"1.0"},"canonical_sha256":"a2b18bbed137a8acdba57ab00d49963f8cb4dbc1abaa0b05bee7a91c24720abb","receipt":{"kind":"pith_receipt","key_id":"pith-v1-2026-05","algorithm":"ed25519","signed_at":"2026-07-05T02:09:52.162532Z","signature_b64":"RuanL1g0yrf5ppHPnxd6liTheKZpd/+Oyrh97xVrxsYPMjYJ6Z2uoJZJEFcv4x1+89gIBeEozkTrwin3T6p6Aw==","signed_message":"canonical_sha256_bytes","builder_version":"pith-number-builder-2026-05-17-v1","receipt_version":"0.3","canonical_sha256":"a2b18bbed137a8acdba57ab00d49963f8cb4dbc1abaa0b05bee7a91c24720abb","last_reissued_at":"2026-07-05T02:09:52.162086Z","signature_status":"signed_v1","first_computed_at":"2026-07-05T02:09:52.162086Z","public_key_fingerprint":"8d4b5ee74e4693bcd1df2446408b0d54"},"source_kind":"arxiv","source_id":"2011.07974","source_version":2,"attestation_state":"computed"},"signer":{"signer_id":"pith.science","signer_type":"pith_registry","key_id":"pith-v1-2026-05","public_key_fingerprint":"8d4b5ee74e4693bcd1df2446408b0d54"},"created_at":"2026-07-05T02:09:52Z","supersedes":[],"prev_event":null,"signature":{"signature_status":"signed_v1","algorithm":"ed25519","key_id":"pith-v1-2026-05","public_key_fingerprint":"8d4b5ee74e4693bcd1df2446408b0d54","signature_b64":"sFfkeL13/1gJn6w5myqSgI/Prb8B/FFTyWHu7bNUWg+SbavaZaZJqoS6yB3E6yhUERWKsOO0r61Z95dshU1EBA==","signed_message":"open_graph_event_sha256_bytes","signed_at":"2026-08-12T16:16:34.699359Z"},"content_sha256":"641a804d73252b618f2b4b58162ea4da6e4a010b789c4bc866171bcb531082d2","schema_version":"1.0","event_id":"sha256:641a804d73252b618f2b4b58162ea4da6e4a010b789c4bc866171bcb531082d2"},{"event_type":"graph_snapshot","subject_pith_number":"pith:2020:UKYYXPWRG6UKZW5FPKYA2SMWH6","target":"graph","payload":{"graph_snapshot":{"paper":{"title":"The Atacama Large Aperture Submillimetre Telescope (AtLAST)","license":"http://arxiv.org/licenses/nonexclusive-distrib/1.0/","headline":"","cross_cats":[],"primary_cat":"astro-ph.IM","authors_text":"Carlos De Breuck, Carlos Duran, Chris Groppi, Claudia Cicone, Evanthia Hatziminaoglou, Hans K\\\"archer, James Geach, Kotaro Kohno, Pamela D. Klaassen, Ryohei Kawabe, Sabrina Sartori, Sean Bryan, Simon R. Dicker, Tony Mroczkowski","submitted_at":"2020-11-16T14:10:50Z","abstract_excerpt":"The coldest and densest structures of gas and dust in the Universe have unique spectral signatures across the (sub-)millimetre bands ($\\nu \\approx 30-950$~GHz). The current generation of single dish facilities has given a glimpse of the potential for discovery, while sub-mm interferometers have presented a high resolution view into the finer details of known targets or in small-area deep fields. However, significant advances in our understanding of such cold and dense structures are now hampered by the limited sensitivity and angular resolution of our sub-mm view of the Universe at larger scal"},"claims":{"count":0,"items":[],"snapshot_sha256":"258153158e38e3291e3d48162225fcdb2d5a3ed65a07baac614ab91432fd4f57"},"source":{"id":"2011.07974","kind":"arxiv","version":2},"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/2011.07974/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":"2026-07-05T02:09:52Z","supersedes":[],"prev_event":null,"signature":{"signature_status":"signed_v1","algorithm":"ed25519","key_id":"pith-v1-2026-05","public_key_fingerprint":"8d4b5ee74e4693bcd1df2446408b0d54","signature_b64":"bJKNhkUNtk2uACu3ga1n1BeTfO29CC7wXyY6vrn7VJwXeZt92dfwD4lthDs8kOd7LOy0PPdzY/l1VvDwntNPAA==","signed_message":"open_graph_event_sha256_bytes","signed_at":"2026-08-12T16:16:34.700252Z"},"content_sha256":"23ceabeb7790d7b8786e7f431d8ca3e18ca22b32f47655745f192b3b97469587","schema_version":"1.0","event_id":"sha256:23ceabeb7790d7b8786e7f431d8ca3e18ca22b32f47655745f192b3b97469587"}],"timestamp_proofs":[],"mirror_hints":[{"mirror_type":"https","name":"Pith Resolver","base_url":"https://pith.science","bundle_url":"https://pith.science/pith/UKYYXPWRG6UKZW5FPKYA2SMWH6/bundle.json","state_url":"https://pith.science/pith/UKYYXPWRG6UKZW5FPKYA2SMWH6/state.json","well_known_bundle_url":"https://pith.science/.well-known/pith/UKYYXPWRG6UKZW5FPKYA2SMWH6/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":"2026-08-12T16:16:34Z","links":{"resolver":"https://pith.science/pith/UKYYXPWRG6UKZW5FPKYA2SMWH6","bundle":"https://pith.science/pith/UKYYXPWRG6UKZW5FPKYA2SMWH6/bundle.json","state":"https://pith.science/pith/UKYYXPWRG6UKZW5FPKYA2SMWH6/state.json","well_known_bundle":"https://pith.science/.well-known/pith/UKYYXPWRG6UKZW5FPKYA2SMWH6/bundle.json"},"state":{"state_type":"pith_open_graph_state","state_version":"1.0","pith_number":"pith:2020:UKYYXPWRG6UKZW5FPKYA2SMWH6","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":"c41853246a75c2493c7306224d7f8eb884cba103f8e39b73d03f491029d129be","cross_cats_sorted":[],"license":"http://arxiv.org/licenses/nonexclusive-distrib/1.0/","primary_cat":"astro-ph.IM","submitted_at":"2020-11-16T14:10:50Z","title_canon_sha256":"e8640607ea891b1b4467e21fcfadb185f3886c70388ad7c050fe55e8b75b2263"},"schema_version":"1.0","source":{"id":"2011.07974","kind":"arxiv","version":2}},"source_aliases":[{"alias_kind":"arxiv","alias_value":"2011.07974","created_at":"2026-07-05T02:09:52Z"},{"alias_kind":"arxiv_version","alias_value":"2011.07974v2","created_at":"2026-07-05T02:09:52Z"},{"alias_kind":"doi","alias_value":"10.48550/arxiv.2011.07974","created_at":"2026-07-05T02:09:52Z"},{"alias_kind":"pith_short_12","alias_value":"UKYYXPWRG6UK","created_at":"2026-07-05T02:09:52Z"},{"alias_kind":"pith_short_16","alias_value":"UKYYXPWRG6UKZW5F","created_at":"2026-07-05T02:09:52Z"},{"alias_kind":"pith_short_8","alias_value":"UKYYXPWR","created_at":"2026-07-05T02:09:52Z"}],"graph_snapshots":[{"event_id":"sha256:23ceabeb7790d7b8786e7f431d8ca3e18ca22b32f47655745f192b3b97469587","target":"graph","created_at":"2026-07-05T02:09:52Z","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/2011.07974/integrity.json","findings":[],"snapshot_sha256":"c28c3603d3b5d939e8dc4c7e95fa8dfce3d595e45f758748cecf8e644a296938","summary":{"advisory":0,"by_detector":{},"critical":0,"informational":0}},"paper":{"abstract_excerpt":"The coldest and densest structures of gas and dust in the Universe have unique spectral signatures across the (sub-)millimetre bands ($\\nu \\approx 30-950$~GHz). The current generation of single dish facilities has given a glimpse of the potential for discovery, while sub-mm interferometers have presented a high resolution view into the finer details of known targets or in small-area deep fields. However, significant advances in our understanding of such cold and dense structures are now hampered by the limited sensitivity and angular resolution of our sub-mm view of the Universe at larger scal","authors_text":"Carlos De Breuck, Carlos Duran, Chris Groppi, Claudia Cicone, Evanthia Hatziminaoglou, Hans K\\\"archer, James Geach, Kotaro Kohno, Pamela D. Klaassen, Ryohei Kawabe, Sabrina Sartori, Sean Bryan, Simon R. Dicker, Tony Mroczkowski","cross_cats":[],"headline":"","license":"http://arxiv.org/licenses/nonexclusive-distrib/1.0/","primary_cat":"astro-ph.IM","submitted_at":"2020-11-16T14:10:50Z","title":"The Atacama Large Aperture Submillimetre Telescope (AtLAST)"},"references":{"count":0,"internal_anchors":0,"resolved_work":0,"sample":[],"snapshot_sha256":"258153158e38e3291e3d48162225fcdb2d5a3ed65a07baac614ab91432fd4f57"},"source":{"id":"2011.07974","kind":"arxiv","version":2},"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":"sha256:641a804d73252b618f2b4b58162ea4da6e4a010b789c4bc866171bcb531082d2","target":"record","created_at":"2026-07-05T02:09:52Z","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":"c41853246a75c2493c7306224d7f8eb884cba103f8e39b73d03f491029d129be","cross_cats_sorted":[],"license":"http://arxiv.org/licenses/nonexclusive-distrib/1.0/","primary_cat":"astro-ph.IM","submitted_at":"2020-11-16T14:10:50Z","title_canon_sha256":"e8640607ea891b1b4467e21fcfadb185f3886c70388ad7c050fe55e8b75b2263"},"schema_version":"1.0","source":{"id":"2011.07974","kind":"arxiv","version":2}},"canonical_sha256":"a2b18bbed137a8acdba57ab00d49963f8cb4dbc1abaa0b05bee7a91c24720abb","receipt":{"algorithm":"ed25519","builder_version":"pith-number-builder-2026-05-17-v1","canonical_sha256":"a2b18bbed137a8acdba57ab00d49963f8cb4dbc1abaa0b05bee7a91c24720abb","first_computed_at":"2026-07-05T02:09:52.162086Z","key_id":"pith-v1-2026-05","kind":"pith_receipt","last_reissued_at":"2026-07-05T02:09:52.162086Z","public_key_fingerprint":"8d4b5ee74e4693bcd1df2446408b0d54","receipt_version":"0.3","signature_b64":"RuanL1g0yrf5ppHPnxd6liTheKZpd/+Oyrh97xVrxsYPMjYJ6Z2uoJZJEFcv4x1+89gIBeEozkTrwin3T6p6Aw==","signature_status":"signed_v1","signed_at":"2026-07-05T02:09:52.162532Z","signed_message":"canonical_sha256_bytes"},"source_id":"2011.07974","source_kind":"arxiv","source_version":2}}},"equivocations":[],"invalid_events":[],"applied_event_ids":["sha256:641a804d73252b618f2b4b58162ea4da6e4a010b789c4bc866171bcb531082d2","sha256:23ceabeb7790d7b8786e7f431d8ca3e18ca22b32f47655745f192b3b97469587"],"state_sha256":"e341b9507db2ad8643dd362eb8a6e69189af44c64ee8bb6d82e7e3e7cb1075bb"},"bundle_signature":{"signature_status":"signed_v1","algorithm":"ed25519","key_id":"pith-v1-2026-05","public_key_fingerprint":"8d4b5ee74e4693bcd1df2446408b0d54","signature_b64":"Nk1zngtgdMbSrD7f9DgS+MIcvsDc5hvB1TPvbKIQkMeuCfGi+XWUzu8j0tb13r21ctF7qAGvA/YQIbaTJQKbDg==","signed_message":"bundle_sha256_bytes","signed_at":"2026-08-12T16:16:34.706194Z","bundle_sha256":"f2a175c2fb5e735eedd26c0eaa08149cce783ae5473a4ef0e28997bd18d31251"}}