{"bundle_type":"pith_open_graph_bundle","bundle_version":"1.0","pith_number":"pith:2022:CY7PGI4KJCO5RB5FXK37CJYJWE","short_pith_number":"pith:CY7PGI4K","canonical_record":{"source":{"id":"2206.14652","kind":"arxiv","version":3},"metadata":{"license":"http://creativecommons.org/licenses/by-nc-nd/4.0/","primary_cat":"astro-ph.IM","submitted_at":"2022-06-29T13:48:06Z","cross_cats_sorted":["hep-ex"],"title_canon_sha256":"0d43d3d9f85fb196e6f8c79f5b6bbb386ec6c057da640cbf3aeb759beb069e04","abstract_canon_sha256":"ecc2e5d103df77f1325867055b1b337b858bb300f8e149b944aef9f52e96fed9"},"schema_version":"1.0"},"canonical_sha256":"163ef3238a489dd887a5bab7f12709b1115d3b22e19c0de5b4fd40306d8e77dd","source":{"kind":"arxiv","id":"2206.14652","version":3},"source_aliases":[{"alias_kind":"arxiv","alias_value":"2206.14652","created_at":"2026-07-05T06:49:57Z"},{"alias_kind":"arxiv_version","alias_value":"2206.14652v3","created_at":"2026-07-05T06:49:57Z"},{"alias_kind":"doi","alias_value":"10.48550/arxiv.2206.14652","created_at":"2026-07-05T06:49:57Z"},{"alias_kind":"pith_short_12","alias_value":"CY7PGI4KJCO5","created_at":"2026-07-05T06:49:57Z"},{"alias_kind":"pith_short_16","alias_value":"CY7PGI4KJCO5RB5F","created_at":"2026-07-05T06:49:57Z"},{"alias_kind":"pith_short_8","alias_value":"CY7PGI4K","created_at":"2026-07-05T06:49:57Z"}],"events":[{"event_type":"record_created","subject_pith_number":"pith:2022:CY7PGI4KJCO5RB5FXK37CJYJWE","target":"record","payload":{"canonical_record":{"source":{"id":"2206.14652","kind":"arxiv","version":3},"metadata":{"license":"http://creativecommons.org/licenses/by-nc-nd/4.0/","primary_cat":"astro-ph.IM","submitted_at":"2022-06-29T13:48:06Z","cross_cats_sorted":["hep-ex"],"title_canon_sha256":"0d43d3d9f85fb196e6f8c79f5b6bbb386ec6c057da640cbf3aeb759beb069e04","abstract_canon_sha256":"ecc2e5d103df77f1325867055b1b337b858bb300f8e149b944aef9f52e96fed9"},"schema_version":"1.0"},"canonical_sha256":"163ef3238a489dd887a5bab7f12709b1115d3b22e19c0de5b4fd40306d8e77dd","receipt":{"kind":"pith_receipt","key_id":"pith-v1-2026-05","algorithm":"ed25519","signed_at":"2026-07-05T06:49:57.683759Z","signature_b64":"REzkjbBBpQSXw4pPJTfKtwPbCBEZNayxPviidLisaY8BwClcVAooV3/pByPM9+kUJevAIZTr9+VlwqoC7uSgCA==","signed_message":"canonical_sha256_bytes","builder_version":"pith-number-builder-2026-05-17-v1","receipt_version":"0.3","canonical_sha256":"163ef3238a489dd887a5bab7f12709b1115d3b22e19c0de5b4fd40306d8e77dd","last_reissued_at":"2026-07-05T06:49:57.682453Z","signature_status":"signed_v1","first_computed_at":"2026-07-05T06:49:57.682453Z","public_key_fingerprint":"8d4b5ee74e4693bcd1df2446408b0d54"},"source_kind":"arxiv","source_id":"2206.14652","source_version":3,"attestation_state":"computed"},"signer":{"signer_id":"pith.science","signer_type":"pith_registry","key_id":"pith-v1-2026-05","public_key_fingerprint":"8d4b5ee74e4693bcd1df2446408b0d54"},"created_at":"2026-07-05T06:49:57Z","supersedes":[],"prev_event":null,"signature":{"signature_status":"signed_v1","algorithm":"ed25519","key_id":"pith-v1-2026-05","public_key_fingerprint":"8d4b5ee74e4693bcd1df2446408b0d54","signature_b64":"htN7Im6idrNWiYDS2SiT5JyL8L5KKQMRxFWmN3Jf7s0pYcbC3dCLPhorN4k22WTtvJl5ukUDHnCaW8/npsZ/CA==","signed_message":"open_graph_event_sha256_bytes","signed_at":"2026-08-19T23:41:31.705353Z"},"content_sha256":"f2f8bb43278ce78054fd53f2db1681430987089ad169c2b5ed762a0de210cc9a","schema_version":"1.0","event_id":"sha256:f2f8bb43278ce78054fd53f2db1681430987089ad169c2b5ed762a0de210cc9a"},{"event_type":"graph_snapshot","subject_pith_number":"pith:2022:CY7PGI4KJCO5RB5FXK37CJYJWE","target":"graph","payload":{"graph_snapshot":{"paper":{"title":"The 511-CAM Mission: A Pointed 511 keV Gamma-Ray Telescope with a Focal Plane Detector Made of Stacked Transition Edge Sensor Microcalorimeter Arrays","license":"http://creativecommons.org/licenses/by-nc-nd/4.0/","headline":"","cross_cats":["hep-ex"],"primary_cat":"astro-ph.IM","authors_text":"Andrew West, Bhupal Dev, Dana Braun, Daniel Becker, Daniel Schmidt, Daniel Swetz, Douglas Bennett, Ephraim Gau, Fabian Kislat, Farzane Shirazi, Francesc Ferrer, Henric Krawczynski, Joel Ullom, Joel Weber, Johnathon Gard, John Mates, Lindsey Lisalda, Md. Arman Hossen, Nicole Rodriguez Cavero, Richard Bose, Sohee Chun","submitted_at":"2022-06-29T13:48:06Z","abstract_excerpt":"The 511 keV gamma-ray emission from the galactic center region may fully or partially originate from the annihilation of positrons from dark matter particles with electrons from the interstellar medium. Alternatively, the positrons could be created by astrophysical sources, involving exclusively standard model physics. We describe here a new concept for a 511 keV mission called 511-CAM (511 keV gamma-ray CAmera using Micro-calorimeters) that combines focusing gamma-ray optics with a stack of Transition Edge Sensor (TES) microcalorimeter arrays in the focal plane. The 511-CAM detector assembly "},"claims":{"count":0,"items":[],"snapshot_sha256":"258153158e38e3291e3d48162225fcdb2d5a3ed65a07baac614ab91432fd4f57"},"source":{"id":"2206.14652","kind":"arxiv","version":3},"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/2206.14652/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":"2026-07-05T06:49:57Z","supersedes":[],"prev_event":null,"signature":{"signature_status":"signed_v1","algorithm":"ed25519","key_id":"pith-v1-2026-05","public_key_fingerprint":"8d4b5ee74e4693bcd1df2446408b0d54","signature_b64":"njylPbqUbuuP6WWdtrJWzh7kV95c2tLmmEBspYIsMx8PyaGx+GghnEJhv24ltWRN6idGB/oOlNlhURGovTN/Cw==","signed_message":"open_graph_event_sha256_bytes","signed_at":"2026-08-19T23:41:31.705920Z"},"content_sha256":"777cef5b5c1edee0cfd66df6a2d67cde1cbe93a3670118c0843fe3f2bc4f2161","schema_version":"1.0","event_id":"sha256:777cef5b5c1edee0cfd66df6a2d67cde1cbe93a3670118c0843fe3f2bc4f2161"}],"timestamp_proofs":[],"mirror_hints":[{"mirror_type":"https","name":"Pith Resolver","base_url":"https://pith.science","bundle_url":"https://pith.science/pith/CY7PGI4KJCO5RB5FXK37CJYJWE/bundle.json","state_url":"https://pith.science/pith/CY7PGI4KJCO5RB5FXK37CJYJWE/state.json","well_known_bundle_url":"https://pith.science/.well-known/pith/CY7PGI4KJCO5RB5FXK37CJYJWE/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":"2026-08-19T23:41:31Z","links":{"resolver":"https://pith.science/pith/CY7PGI4KJCO5RB5FXK37CJYJWE","bundle":"https://pith.science/pith/CY7PGI4KJCO5RB5FXK37CJYJWE/bundle.json","state":"https://pith.science/pith/CY7PGI4KJCO5RB5FXK37CJYJWE/state.json","well_known_bundle":"https://pith.science/.well-known/pith/CY7PGI4KJCO5RB5FXK37CJYJWE/bundle.json"},"state":{"state_type":"pith_open_graph_state","state_version":"1.0","pith_number":"pith:2022:CY7PGI4KJCO5RB5FXK37CJYJWE","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":"ecc2e5d103df77f1325867055b1b337b858bb300f8e149b944aef9f52e96fed9","cross_cats_sorted":["hep-ex"],"license":"http://creativecommons.org/licenses/by-nc-nd/4.0/","primary_cat":"astro-ph.IM","submitted_at":"2022-06-29T13:48:06Z","title_canon_sha256":"0d43d3d9f85fb196e6f8c79f5b6bbb386ec6c057da640cbf3aeb759beb069e04"},"schema_version":"1.0","source":{"id":"2206.14652","kind":"arxiv","version":3}},"source_aliases":[{"alias_kind":"arxiv","alias_value":"2206.14652","created_at":"2026-07-05T06:49:57Z"},{"alias_kind":"arxiv_version","alias_value":"2206.14652v3","created_at":"2026-07-05T06:49:57Z"},{"alias_kind":"doi","alias_value":"10.48550/arxiv.2206.14652","created_at":"2026-07-05T06:49:57Z"},{"alias_kind":"pith_short_12","alias_value":"CY7PGI4KJCO5","created_at":"2026-07-05T06:49:57Z"},{"alias_kind":"pith_short_16","alias_value":"CY7PGI4KJCO5RB5F","created_at":"2026-07-05T06:49:57Z"},{"alias_kind":"pith_short_8","alias_value":"CY7PGI4K","created_at":"2026-07-05T06:49:57Z"}],"graph_snapshots":[{"event_id":"sha256:777cef5b5c1edee0cfd66df6a2d67cde1cbe93a3670118c0843fe3f2bc4f2161","target":"graph","created_at":"2026-07-05T06:49:57Z","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/2206.14652/integrity.json","findings":[],"snapshot_sha256":"c28c3603d3b5d939e8dc4c7e95fa8dfce3d595e45f758748cecf8e644a296938","summary":{"advisory":0,"by_detector":{},"critical":0,"informational":0}},"paper":{"abstract_excerpt":"The 511 keV gamma-ray emission from the galactic center region may fully or partially originate from the annihilation of positrons from dark matter particles with electrons from the interstellar medium. Alternatively, the positrons could be created by astrophysical sources, involving exclusively standard model physics. We describe here a new concept for a 511 keV mission called 511-CAM (511 keV gamma-ray CAmera using Micro-calorimeters) that combines focusing gamma-ray optics with a stack of Transition Edge Sensor (TES) microcalorimeter arrays in the focal plane. The 511-CAM detector assembly ","authors_text":"Andrew West, Bhupal Dev, Dana Braun, Daniel Becker, Daniel Schmidt, Daniel Swetz, Douglas Bennett, Ephraim Gau, Fabian Kislat, Farzane Shirazi, Francesc Ferrer, Henric Krawczynski, Joel Ullom, Joel Weber, Johnathon Gard, John Mates, Lindsey Lisalda, Md. Arman Hossen, Nicole Rodriguez Cavero, Richard Bose, Sohee Chun","cross_cats":["hep-ex"],"headline":"","license":"http://creativecommons.org/licenses/by-nc-nd/4.0/","primary_cat":"astro-ph.IM","submitted_at":"2022-06-29T13:48:06Z","title":"The 511-CAM Mission: A Pointed 511 keV Gamma-Ray Telescope with a Focal Plane Detector Made of Stacked Transition Edge Sensor Microcalorimeter Arrays"},"references":{"count":0,"internal_anchors":0,"resolved_work":0,"sample":[],"snapshot_sha256":"258153158e38e3291e3d48162225fcdb2d5a3ed65a07baac614ab91432fd4f57"},"source":{"id":"2206.14652","kind":"arxiv","version":3},"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:f2f8bb43278ce78054fd53f2db1681430987089ad169c2b5ed762a0de210cc9a","target":"record","created_at":"2026-07-05T06:49:57Z","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":"ecc2e5d103df77f1325867055b1b337b858bb300f8e149b944aef9f52e96fed9","cross_cats_sorted":["hep-ex"],"license":"http://creativecommons.org/licenses/by-nc-nd/4.0/","primary_cat":"astro-ph.IM","submitted_at":"2022-06-29T13:48:06Z","title_canon_sha256":"0d43d3d9f85fb196e6f8c79f5b6bbb386ec6c057da640cbf3aeb759beb069e04"},"schema_version":"1.0","source":{"id":"2206.14652","kind":"arxiv","version":3}},"canonical_sha256":"163ef3238a489dd887a5bab7f12709b1115d3b22e19c0de5b4fd40306d8e77dd","receipt":{"algorithm":"ed25519","builder_version":"pith-number-builder-2026-05-17-v1","canonical_sha256":"163ef3238a489dd887a5bab7f12709b1115d3b22e19c0de5b4fd40306d8e77dd","first_computed_at":"2026-07-05T06:49:57.682453Z","key_id":"pith-v1-2026-05","kind":"pith_receipt","last_reissued_at":"2026-07-05T06:49:57.682453Z","public_key_fingerprint":"8d4b5ee74e4693bcd1df2446408b0d54","receipt_version":"0.3","signature_b64":"REzkjbBBpQSXw4pPJTfKtwPbCBEZNayxPviidLisaY8BwClcVAooV3/pByPM9+kUJevAIZTr9+VlwqoC7uSgCA==","signature_status":"signed_v1","signed_at":"2026-07-05T06:49:57.683759Z","signed_message":"canonical_sha256_bytes"},"source_id":"2206.14652","source_kind":"arxiv","source_version":3}}},"equivocations":[],"invalid_events":[],"applied_event_ids":["sha256:f2f8bb43278ce78054fd53f2db1681430987089ad169c2b5ed762a0de210cc9a","sha256:777cef5b5c1edee0cfd66df6a2d67cde1cbe93a3670118c0843fe3f2bc4f2161"],"state_sha256":"8f4a9a8a5ffc64faa64d7ac1ff06a2ef0f347f698e6492e63fa3889516e34f9a"},"bundle_signature":{"signature_status":"signed_v1","algorithm":"ed25519","key_id":"pith-v1-2026-05","public_key_fingerprint":"8d4b5ee74e4693bcd1df2446408b0d54","signature_b64":"2cJsxWodGW9OMP8At9U25uSOsFVh54BwUw5peqmFnA/0HkKgrcBi70kyKMQJy74nhhlqKtYjZ9EAJEfa9tv8BQ==","signed_message":"bundle_sha256_bytes","signed_at":"2026-08-19T23:41:31.712504Z","bundle_sha256":"12881b052648b86eda0a08fadf7967cdd967aeab73c8298fd3ec1b655c1cb8d2"}}