{"bundle_type":"pith_open_graph_bundle","bundle_version":"1.0","pith_number":"pith:2012:7D3HHBZYVOYQPEKXPPHYJYXN3P","short_pith_number":"pith:7D3HHBZY","canonical_record":{"source":{"id":"1212.1523","kind":"arxiv","version":1},"metadata":{"license":"http://arxiv.org/licenses/nonexclusive-distrib/1.0/","primary_cat":"astro-ph.GA","submitted_at":"2012-12-07T03:09:51Z","cross_cats_sorted":[],"title_canon_sha256":"3bdc974551614ca83ad84de33001ba1637f6bc18f6499085a90f53a41adcaef5","abstract_canon_sha256":"1345320ca6b1f485081f482131067e742ec5a74cd7d5a401c8336cbdd729a950"},"schema_version":"1.0"},"canonical_sha256":"f8f6738738abb10791577bcf84e2eddbf88af4819f87c3373be9b6c1db30d12c","source":{"kind":"arxiv","id":"1212.1523","version":1},"source_aliases":[{"alias_kind":"arxiv","alias_value":"1212.1523","created_at":"2026-05-18T01:52:46Z"},{"alias_kind":"arxiv_version","alias_value":"1212.1523v1","created_at":"2026-05-18T01:52:46Z"},{"alias_kind":"doi","alias_value":"10.48550/arxiv.1212.1523","created_at":"2026-05-18T01:52:46Z"},{"alias_kind":"pith_short_12","alias_value":"7D3HHBZYVOYQ","created_at":"2026-05-18T12:26:56Z"},{"alias_kind":"pith_short_16","alias_value":"7D3HHBZYVOYQPEKX","created_at":"2026-05-18T12:26:56Z"},{"alias_kind":"pith_short_8","alias_value":"7D3HHBZY","created_at":"2026-05-18T12:26:56Z"}],"events":[{"event_type":"record_created","subject_pith_number":"pith:2012:7D3HHBZYVOYQPEKXPPHYJYXN3P","target":"record","payload":{"canonical_record":{"source":{"id":"1212.1523","kind":"arxiv","version":1},"metadata":{"license":"http://arxiv.org/licenses/nonexclusive-distrib/1.0/","primary_cat":"astro-ph.GA","submitted_at":"2012-12-07T03:09:51Z","cross_cats_sorted":[],"title_canon_sha256":"3bdc974551614ca83ad84de33001ba1637f6bc18f6499085a90f53a41adcaef5","abstract_canon_sha256":"1345320ca6b1f485081f482131067e742ec5a74cd7d5a401c8336cbdd729a950"},"schema_version":"1.0"},"canonical_sha256":"f8f6738738abb10791577bcf84e2eddbf88af4819f87c3373be9b6c1db30d12c","receipt":{"kind":"pith_receipt","key_id":"pith-v1-2026-05","algorithm":"ed25519","signed_at":"2026-05-18T01:52:46.674188Z","signature_b64":"IyT9b7EQpV+DvC0+9k84OA0vpuOo1frVdv7VNZ5Hx7DY2XE6EL+gdlAC7MYBIPzK1kzGwu+4kRimncHOk5r9Bg==","signed_message":"canonical_sha256_bytes","builder_version":"pith-number-builder-2026-05-17-v1","receipt_version":"0.3","canonical_sha256":"f8f6738738abb10791577bcf84e2eddbf88af4819f87c3373be9b6c1db30d12c","last_reissued_at":"2026-05-18T01:52:46.673674Z","signature_status":"signed_v1","first_computed_at":"2026-05-18T01:52:46.673674Z","public_key_fingerprint":"8d4b5ee74e4693bcd1df2446408b0d54"},"source_kind":"arxiv","source_id":"1212.1523","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":"2026-05-18T01:52:46Z","supersedes":[],"prev_event":null,"signature":{"signature_status":"signed_v1","algorithm":"ed25519","key_id":"pith-v1-2026-05","public_key_fingerprint":"8d4b5ee74e4693bcd1df2446408b0d54","signature_b64":"QSR+BbrQr6D75ah0mQWBT5mPHxawJQMnRleMySj0BPIk9yLgmMg3ThDmVFmOXJucJur+BxMVVzQ6hpWuv+rCDA==","signed_message":"open_graph_event_sha256_bytes","signed_at":"2026-05-27T23:48:31.463332Z"},"content_sha256":"ea26912fb754fd64dc3a91a10a07f4417b724240ba35bb714740075834a77290","schema_version":"1.0","event_id":"sha256:ea26912fb754fd64dc3a91a10a07f4417b724240ba35bb714740075834a77290"},{"event_type":"graph_snapshot","subject_pith_number":"pith:2012:7D3HHBZYVOYQPEKXPPHYJYXN3P","target":"graph","payload":{"graph_snapshot":{"paper":{"title":"The Origem Loop","license":"http://arxiv.org/licenses/nonexclusive-distrib/1.0/","headline":"","cross_cats":[],"primary_cat":"astro-ph.GA","authors_text":"J. L. Han, X. Y. Gao","submitted_at":"2012-12-07T03:09:51Z","abstract_excerpt":"The Origem Loop in the Galactic anticentre was discovered in 1970s and suggested to be a large supernova remnant. It was argued later to be a chance superposition of unrelated radio sources. We attempt to understand the properties of the Origem Loop. Available multi-frequency radio data were used for the determination of radio spectra of different parts of the Origem Loop and the polarization properties of the loop. Newly available sensitive observations show that the Origem Loop is a loop of more than 6 deg in diameter. It consists of a large non-thermal arc in the north, which we call the Or"},"claims":{"count":0,"items":[],"snapshot_sha256":"258153158e38e3291e3d48162225fcdb2d5a3ed65a07baac614ab91432fd4f57"},"source":{"id":"1212.1523","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":"2026-05-18T01:52:46Z","supersedes":[],"prev_event":null,"signature":{"signature_status":"signed_v1","algorithm":"ed25519","key_id":"pith-v1-2026-05","public_key_fingerprint":"8d4b5ee74e4693bcd1df2446408b0d54","signature_b64":"VMB+wVENQKmoB3+f1CKFudQQmz/rwRVfmQOjXbgTLgmV2+ZjXQ34OJYuYDhlh2UEKGqI5KrXwsZYNqsX4HRlAg==","signed_message":"open_graph_event_sha256_bytes","signed_at":"2026-05-27T23:48:31.464009Z"},"content_sha256":"c9fc99e39f2a19f03e17f8975e980992a2e2b0a9ff6640be1f211c6734d08e2a","schema_version":"1.0","event_id":"sha256:c9fc99e39f2a19f03e17f8975e980992a2e2b0a9ff6640be1f211c6734d08e2a"}],"timestamp_proofs":[],"mirror_hints":[{"mirror_type":"https","name":"Pith Resolver","base_url":"https://pith.science","bundle_url":"https://pith.science/pith/7D3HHBZYVOYQPEKXPPHYJYXN3P/bundle.json","state_url":"https://pith.science/pith/7D3HHBZYVOYQPEKXPPHYJYXN3P/state.json","well_known_bundle_url":"https://pith.science/.well-known/pith/7D3HHBZYVOYQPEKXPPHYJYXN3P/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":"2026-05-27T23:48:31Z","links":{"resolver":"https://pith.science/pith/7D3HHBZYVOYQPEKXPPHYJYXN3P","bundle":"https://pith.science/pith/7D3HHBZYVOYQPEKXPPHYJYXN3P/bundle.json","state":"https://pith.science/pith/7D3HHBZYVOYQPEKXPPHYJYXN3P/state.json","well_known_bundle":"https://pith.science/.well-known/pith/7D3HHBZYVOYQPEKXPPHYJYXN3P/bundle.json"},"state":{"state_type":"pith_open_graph_state","state_version":"1.0","pith_number":"pith:2012:7D3HHBZYVOYQPEKXPPHYJYXN3P","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":"1345320ca6b1f485081f482131067e742ec5a74cd7d5a401c8336cbdd729a950","cross_cats_sorted":[],"license":"http://arxiv.org/licenses/nonexclusive-distrib/1.0/","primary_cat":"astro-ph.GA","submitted_at":"2012-12-07T03:09:51Z","title_canon_sha256":"3bdc974551614ca83ad84de33001ba1637f6bc18f6499085a90f53a41adcaef5"},"schema_version":"1.0","source":{"id":"1212.1523","kind":"arxiv","version":1}},"source_aliases":[{"alias_kind":"arxiv","alias_value":"1212.1523","created_at":"2026-05-18T01:52:46Z"},{"alias_kind":"arxiv_version","alias_value":"1212.1523v1","created_at":"2026-05-18T01:52:46Z"},{"alias_kind":"doi","alias_value":"10.48550/arxiv.1212.1523","created_at":"2026-05-18T01:52:46Z"},{"alias_kind":"pith_short_12","alias_value":"7D3HHBZYVOYQ","created_at":"2026-05-18T12:26:56Z"},{"alias_kind":"pith_short_16","alias_value":"7D3HHBZYVOYQPEKX","created_at":"2026-05-18T12:26:56Z"},{"alias_kind":"pith_short_8","alias_value":"7D3HHBZY","created_at":"2026-05-18T12:26:56Z"}],"graph_snapshots":[{"event_id":"sha256:c9fc99e39f2a19f03e17f8975e980992a2e2b0a9ff6640be1f211c6734d08e2a","target":"graph","created_at":"2026-05-18T01:52:46Z","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 Origem Loop in the Galactic anticentre was discovered in 1970s and suggested to be a large supernova remnant. It was argued later to be a chance superposition of unrelated radio sources. We attempt to understand the properties of the Origem Loop. Available multi-frequency radio data were used for the determination of radio spectra of different parts of the Origem Loop and the polarization properties of the loop. Newly available sensitive observations show that the Origem Loop is a loop of more than 6 deg in diameter. It consists of a large non-thermal arc in the north, which we call the Or","authors_text":"J. L. Han, X. Y. Gao","cross_cats":[],"headline":"","license":"http://arxiv.org/licenses/nonexclusive-distrib/1.0/","primary_cat":"astro-ph.GA","submitted_at":"2012-12-07T03:09:51Z","title":"The Origem Loop"},"references":{"count":0,"internal_anchors":0,"resolved_work":0,"sample":[],"snapshot_sha256":"258153158e38e3291e3d48162225fcdb2d5a3ed65a07baac614ab91432fd4f57"},"source":{"id":"1212.1523","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:ea26912fb754fd64dc3a91a10a07f4417b724240ba35bb714740075834a77290","target":"record","created_at":"2026-05-18T01:52:46Z","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":"1345320ca6b1f485081f482131067e742ec5a74cd7d5a401c8336cbdd729a950","cross_cats_sorted":[],"license":"http://arxiv.org/licenses/nonexclusive-distrib/1.0/","primary_cat":"astro-ph.GA","submitted_at":"2012-12-07T03:09:51Z","title_canon_sha256":"3bdc974551614ca83ad84de33001ba1637f6bc18f6499085a90f53a41adcaef5"},"schema_version":"1.0","source":{"id":"1212.1523","kind":"arxiv","version":1}},"canonical_sha256":"f8f6738738abb10791577bcf84e2eddbf88af4819f87c3373be9b6c1db30d12c","receipt":{"algorithm":"ed25519","builder_version":"pith-number-builder-2026-05-17-v1","canonical_sha256":"f8f6738738abb10791577bcf84e2eddbf88af4819f87c3373be9b6c1db30d12c","first_computed_at":"2026-05-18T01:52:46.673674Z","key_id":"pith-v1-2026-05","kind":"pith_receipt","last_reissued_at":"2026-05-18T01:52:46.673674Z","public_key_fingerprint":"8d4b5ee74e4693bcd1df2446408b0d54","receipt_version":"0.3","signature_b64":"IyT9b7EQpV+DvC0+9k84OA0vpuOo1frVdv7VNZ5Hx7DY2XE6EL+gdlAC7MYBIPzK1kzGwu+4kRimncHOk5r9Bg==","signature_status":"signed_v1","signed_at":"2026-05-18T01:52:46.674188Z","signed_message":"canonical_sha256_bytes"},"source_id":"1212.1523","source_kind":"arxiv","source_version":1}}},"equivocations":[],"invalid_events":[],"applied_event_ids":["sha256:ea26912fb754fd64dc3a91a10a07f4417b724240ba35bb714740075834a77290","sha256:c9fc99e39f2a19f03e17f8975e980992a2e2b0a9ff6640be1f211c6734d08e2a"],"state_sha256":"796f10e9e2d0ffd3e172305ab0e321bbf448f694e127cba459365d8f896c4d22"},"bundle_signature":{"signature_status":"signed_v1","algorithm":"ed25519","key_id":"pith-v1-2026-05","public_key_fingerprint":"8d4b5ee74e4693bcd1df2446408b0d54","signature_b64":"StZlL7EoDwQ96GpHIVSCyZmXAAhDlLKCFc6zUJuALr3jkS1SkAtKr3k9cRFPkjAzujVkIBj5pfTch72Pmz7XDQ==","signed_message":"bundle_sha256_bytes","signed_at":"2026-05-27T23:48:31.466780Z","bundle_sha256":"c25fee6fad8284a5f1cb522cbe4a422b5515324b611b3c69aa0006489c9751cb"}}