{"bundle_type":"pith_open_graph_bundle","bundle_version":"1.0","pith_number":"pith:2015:BAMCHYW7OW3IEGOMD4LY3FJ7LM","short_pith_number":"pith:BAMCHYW7","canonical_record":{"source":{"id":"1507.08882","kind":"arxiv","version":2},"metadata":{"license":"http://arxiv.org/licenses/nonexclusive-distrib/1.0/","primary_cat":"hep-th","submitted_at":"2015-07-31T13:57:54Z","cross_cats_sorted":[],"title_canon_sha256":"a7e31123c89149e891c4b5176f7a9817bb544f2a9eabbcf686970f31f7b09f96","abstract_canon_sha256":"bd829a35c73160e009157b48e0ce7b2c78ac3a243f36ed6493f1eaa744edba60"},"schema_version":"1.0"},"canonical_sha256":"081823e2df75b68219cc1f178d953f5b18f03c701af10e6c5c3f1686a03ab677","source":{"kind":"arxiv","id":"1507.08882","version":2},"source_aliases":[{"alias_kind":"arxiv","alias_value":"1507.08882","created_at":"2026-05-18T01:31:37Z"},{"alias_kind":"arxiv_version","alias_value":"1507.08882v2","created_at":"2026-05-18T01:31:37Z"},{"alias_kind":"doi","alias_value":"10.48550/arxiv.1507.08882","created_at":"2026-05-18T01:31:37Z"},{"alias_kind":"pith_short_12","alias_value":"BAMCHYW7OW3I","created_at":"2026-05-18T12:29:14Z"},{"alias_kind":"pith_short_16","alias_value":"BAMCHYW7OW3IEGOM","created_at":"2026-05-18T12:29:14Z"},{"alias_kind":"pith_short_8","alias_value":"BAMCHYW7","created_at":"2026-05-18T12:29:14Z"}],"events":[{"event_type":"record_created","subject_pith_number":"pith:2015:BAMCHYW7OW3IEGOMD4LY3FJ7LM","target":"record","payload":{"canonical_record":{"source":{"id":"1507.08882","kind":"arxiv","version":2},"metadata":{"license":"http://arxiv.org/licenses/nonexclusive-distrib/1.0/","primary_cat":"hep-th","submitted_at":"2015-07-31T13:57:54Z","cross_cats_sorted":[],"title_canon_sha256":"a7e31123c89149e891c4b5176f7a9817bb544f2a9eabbcf686970f31f7b09f96","abstract_canon_sha256":"bd829a35c73160e009157b48e0ce7b2c78ac3a243f36ed6493f1eaa744edba60"},"schema_version":"1.0"},"canonical_sha256":"081823e2df75b68219cc1f178d953f5b18f03c701af10e6c5c3f1686a03ab677","receipt":{"kind":"pith_receipt","key_id":"pith-v1-2026-05","algorithm":"ed25519","signed_at":"2026-05-18T01:31:37.206381Z","signature_b64":"+BViHEysq9BE7PBejYKI48zdBpbOZ5jeUobExyKgHBu8WyobMqjZ1KHKT4RVpSlbj2I4oAzwbSOn6pya2IGpDg==","signed_message":"canonical_sha256_bytes","builder_version":"pith-number-builder-2026-05-17-v1","receipt_version":"0.3","canonical_sha256":"081823e2df75b68219cc1f178d953f5b18f03c701af10e6c5c3f1686a03ab677","last_reissued_at":"2026-05-18T01:31:37.205558Z","signature_status":"signed_v1","first_computed_at":"2026-05-18T01:31:37.205558Z","public_key_fingerprint":"8d4b5ee74e4693bcd1df2446408b0d54"},"source_kind":"arxiv","source_id":"1507.08882","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":"2026-05-18T01:31:37Z","supersedes":[],"prev_event":null,"signature":{"signature_status":"signed_v1","algorithm":"ed25519","key_id":"pith-v1-2026-05","public_key_fingerprint":"8d4b5ee74e4693bcd1df2446408b0d54","signature_b64":"lb5OOTMHmj8C3fd4CG4t11/OI9B/ot96uIitHf43yJOZGLXGFeYlIuFWlaTA42Mhu4sw2FOb2trHCCh3k2u1BQ==","signed_message":"open_graph_event_sha256_bytes","signed_at":"2026-06-10T09:37:14.761780Z"},"content_sha256":"f4576d29e27f2811c3cf22fcb0c365cf4885cd6b6c94675d08aa3690262fd3f5","schema_version":"1.0","event_id":"sha256:f4576d29e27f2811c3cf22fcb0c365cf4885cd6b6c94675d08aa3690262fd3f5"},{"event_type":"graph_snapshot","subject_pith_number":"pith:2015:BAMCHYW7OW3IEGOMD4LY3FJ7LM","target":"graph","payload":{"graph_snapshot":{"paper":{"title":"$n$-point amplitudes with a single negative-helicity graviton","license":"http://arxiv.org/licenses/nonexclusive-distrib/1.0/","headline":"","cross_cats":[],"primary_cat":"hep-th","authors_text":"David C. Dunbar, Sam D. Alston, Warren B. Perkins","submitted_at":"2015-07-31T13:57:54Z","abstract_excerpt":"We construct an expression for the n-point one-loop graviton scattering amplitude with a single negative helicity external leg using an augmented recursion technique. We analyse the soft-limits of these amplitudes and demonstrate that they have soft behaviour beyond the conjectured universal behaviour."},"claims":{"count":0,"items":[],"snapshot_sha256":"258153158e38e3291e3d48162225fcdb2d5a3ed65a07baac614ab91432fd4f57"},"source":{"id":"1507.08882","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":""},"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":"2026-05-18T01:31:37Z","supersedes":[],"prev_event":null,"signature":{"signature_status":"signed_v1","algorithm":"ed25519","key_id":"pith-v1-2026-05","public_key_fingerprint":"8d4b5ee74e4693bcd1df2446408b0d54","signature_b64":"EaYc6lihOZvLxtatTPmhXeZkxvSIfr5GfWdMycVVHGXTJZvEXaA1HtuQB2p3ZVOwj4/dDMLQ70Ds91ioO1+cDw==","signed_message":"open_graph_event_sha256_bytes","signed_at":"2026-06-10T09:37:14.762169Z"},"content_sha256":"1415f867da307ffa9f3abe4cc3a2f9a43fad4fbb82db1067cd0b8a0873dc671e","schema_version":"1.0","event_id":"sha256:1415f867da307ffa9f3abe4cc3a2f9a43fad4fbb82db1067cd0b8a0873dc671e"}],"timestamp_proofs":[],"mirror_hints":[{"mirror_type":"https","name":"Pith Resolver","base_url":"https://pith.science","bundle_url":"https://pith.science/pith/BAMCHYW7OW3IEGOMD4LY3FJ7LM/bundle.json","state_url":"https://pith.science/pith/BAMCHYW7OW3IEGOMD4LY3FJ7LM/state.json","well_known_bundle_url":"https://pith.science/.well-known/pith/BAMCHYW7OW3IEGOMD4LY3FJ7LM/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":"2026-06-10T09:37:14Z","links":{"resolver":"https://pith.science/pith/BAMCHYW7OW3IEGOMD4LY3FJ7LM","bundle":"https://pith.science/pith/BAMCHYW7OW3IEGOMD4LY3FJ7LM/bundle.json","state":"https://pith.science/pith/BAMCHYW7OW3IEGOMD4LY3FJ7LM/state.json","well_known_bundle":"https://pith.science/.well-known/pith/BAMCHYW7OW3IEGOMD4LY3FJ7LM/bundle.json"},"state":{"state_type":"pith_open_graph_state","state_version":"1.0","pith_number":"pith:2015:BAMCHYW7OW3IEGOMD4LY3FJ7LM","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":"bd829a35c73160e009157b48e0ce7b2c78ac3a243f36ed6493f1eaa744edba60","cross_cats_sorted":[],"license":"http://arxiv.org/licenses/nonexclusive-distrib/1.0/","primary_cat":"hep-th","submitted_at":"2015-07-31T13:57:54Z","title_canon_sha256":"a7e31123c89149e891c4b5176f7a9817bb544f2a9eabbcf686970f31f7b09f96"},"schema_version":"1.0","source":{"id":"1507.08882","kind":"arxiv","version":2}},"source_aliases":[{"alias_kind":"arxiv","alias_value":"1507.08882","created_at":"2026-05-18T01:31:37Z"},{"alias_kind":"arxiv_version","alias_value":"1507.08882v2","created_at":"2026-05-18T01:31:37Z"},{"alias_kind":"doi","alias_value":"10.48550/arxiv.1507.08882","created_at":"2026-05-18T01:31:37Z"},{"alias_kind":"pith_short_12","alias_value":"BAMCHYW7OW3I","created_at":"2026-05-18T12:29:14Z"},{"alias_kind":"pith_short_16","alias_value":"BAMCHYW7OW3IEGOM","created_at":"2026-05-18T12:29:14Z"},{"alias_kind":"pith_short_8","alias_value":"BAMCHYW7","created_at":"2026-05-18T12:29:14Z"}],"graph_snapshots":[{"event_id":"sha256:1415f867da307ffa9f3abe4cc3a2f9a43fad4fbb82db1067cd0b8a0873dc671e","target":"graph","created_at":"2026-05-18T01:31:37Z","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":"We construct an expression for the n-point one-loop graviton scattering amplitude with a single negative helicity external leg using an augmented recursion technique. We analyse the soft-limits of these amplitudes and demonstrate that they have soft behaviour beyond the conjectured universal behaviour.","authors_text":"David C. Dunbar, Sam D. Alston, Warren B. Perkins","cross_cats":[],"headline":"","license":"http://arxiv.org/licenses/nonexclusive-distrib/1.0/","primary_cat":"hep-th","submitted_at":"2015-07-31T13:57:54Z","title":"$n$-point amplitudes with a single negative-helicity graviton"},"references":{"count":0,"internal_anchors":0,"resolved_work":0,"sample":[],"snapshot_sha256":"258153158e38e3291e3d48162225fcdb2d5a3ed65a07baac614ab91432fd4f57"},"source":{"id":"1507.08882","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:f4576d29e27f2811c3cf22fcb0c365cf4885cd6b6c94675d08aa3690262fd3f5","target":"record","created_at":"2026-05-18T01:31:37Z","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":"bd829a35c73160e009157b48e0ce7b2c78ac3a243f36ed6493f1eaa744edba60","cross_cats_sorted":[],"license":"http://arxiv.org/licenses/nonexclusive-distrib/1.0/","primary_cat":"hep-th","submitted_at":"2015-07-31T13:57:54Z","title_canon_sha256":"a7e31123c89149e891c4b5176f7a9817bb544f2a9eabbcf686970f31f7b09f96"},"schema_version":"1.0","source":{"id":"1507.08882","kind":"arxiv","version":2}},"canonical_sha256":"081823e2df75b68219cc1f178d953f5b18f03c701af10e6c5c3f1686a03ab677","receipt":{"algorithm":"ed25519","builder_version":"pith-number-builder-2026-05-17-v1","canonical_sha256":"081823e2df75b68219cc1f178d953f5b18f03c701af10e6c5c3f1686a03ab677","first_computed_at":"2026-05-18T01:31:37.205558Z","key_id":"pith-v1-2026-05","kind":"pith_receipt","last_reissued_at":"2026-05-18T01:31:37.205558Z","public_key_fingerprint":"8d4b5ee74e4693bcd1df2446408b0d54","receipt_version":"0.3","signature_b64":"+BViHEysq9BE7PBejYKI48zdBpbOZ5jeUobExyKgHBu8WyobMqjZ1KHKT4RVpSlbj2I4oAzwbSOn6pya2IGpDg==","signature_status":"signed_v1","signed_at":"2026-05-18T01:31:37.206381Z","signed_message":"canonical_sha256_bytes"},"source_id":"1507.08882","source_kind":"arxiv","source_version":2}}},"equivocations":[],"invalid_events":[],"applied_event_ids":["sha256:f4576d29e27f2811c3cf22fcb0c365cf4885cd6b6c94675d08aa3690262fd3f5","sha256:1415f867da307ffa9f3abe4cc3a2f9a43fad4fbb82db1067cd0b8a0873dc671e"],"state_sha256":"517807a4a90aa06b34d417482c0df4ecfdd1913dab7264f741d39b263c135a3a"},"bundle_signature":{"signature_status":"signed_v1","algorithm":"ed25519","key_id":"pith-v1-2026-05","public_key_fingerprint":"8d4b5ee74e4693bcd1df2446408b0d54","signature_b64":"pqgkNnRICjZkmT5/pb2999Mnk3t7DM5Slc7Kw8WmNfCj4eK2PmoXoGFeo9hjKHT9q7J+EY58iCyej3IeYiH2Bw==","signed_message":"bundle_sha256_bytes","signed_at":"2026-06-10T09:37:14.764870Z","bundle_sha256":"c43f3afcf9e44ce14f17bc3f5fe780ce45d9374c79c5789d4dd096efdf10b29f"}}