{"bundle_type":"pith_open_graph_bundle","bundle_version":"1.0","pith_number":"pith:2017:AHG5JOSCOS2AFE65GMVDJMBOUJ","short_pith_number":"pith:AHG5JOSC","canonical_record":{"source":{"id":"1707.02434","kind":"arxiv","version":1},"metadata":{"license":"http://arxiv.org/licenses/nonexclusive-distrib/1.0/","primary_cat":"astro-ph.GA","submitted_at":"2017-07-08T12:54:10Z","cross_cats_sorted":["astro-ph.SR"],"title_canon_sha256":"4fc8f65d0aaa7d126a48a37e7b1a11d92954ee4162b5d3158c387d020a875a66","abstract_canon_sha256":"a36b799f81dcb93d53be0d9ee03de5be075aa9310ad6e3f442743a10793d3511"},"schema_version":"1.0"},"canonical_sha256":"01cdd4ba4274b40293dd332a34b02ea2792664b970dfb19735e74ed5150b8c86","source":{"kind":"arxiv","id":"1707.02434","version":1},"source_aliases":[{"alias_kind":"arxiv","alias_value":"1707.02434","created_at":"2026-05-18T00:40:36Z"},{"alias_kind":"arxiv_version","alias_value":"1707.02434v1","created_at":"2026-05-18T00:40:36Z"},{"alias_kind":"doi","alias_value":"10.48550/arxiv.1707.02434","created_at":"2026-05-18T00:40:36Z"},{"alias_kind":"pith_short_12","alias_value":"AHG5JOSCOS2A","created_at":"2026-05-18T12:31:05Z"},{"alias_kind":"pith_short_16","alias_value":"AHG5JOSCOS2AFE65","created_at":"2026-05-18T12:31:05Z"},{"alias_kind":"pith_short_8","alias_value":"AHG5JOSC","created_at":"2026-05-18T12:31:05Z"}],"events":[{"event_type":"record_created","subject_pith_number":"pith:2017:AHG5JOSCOS2AFE65GMVDJMBOUJ","target":"record","payload":{"canonical_record":{"source":{"id":"1707.02434","kind":"arxiv","version":1},"metadata":{"license":"http://arxiv.org/licenses/nonexclusive-distrib/1.0/","primary_cat":"astro-ph.GA","submitted_at":"2017-07-08T12:54:10Z","cross_cats_sorted":["astro-ph.SR"],"title_canon_sha256":"4fc8f65d0aaa7d126a48a37e7b1a11d92954ee4162b5d3158c387d020a875a66","abstract_canon_sha256":"a36b799f81dcb93d53be0d9ee03de5be075aa9310ad6e3f442743a10793d3511"},"schema_version":"1.0"},"canonical_sha256":"01cdd4ba4274b40293dd332a34b02ea2792664b970dfb19735e74ed5150b8c86","receipt":{"kind":"pith_receipt","key_id":"pith-v1-2026-05","algorithm":"ed25519","signed_at":"2026-05-18T00:40:36.905410Z","signature_b64":"Q8ShySwEzo9sGXFnI/GEq9bMNCGXpTGgF8yEESZVSYWIxEOfJetsBKCwuklYg8AKpsq4BqIWP3LTsWHiB3TsDw==","signed_message":"canonical_sha256_bytes","builder_version":"pith-number-builder-2026-05-17-v1","receipt_version":"0.3","canonical_sha256":"01cdd4ba4274b40293dd332a34b02ea2792664b970dfb19735e74ed5150b8c86","last_reissued_at":"2026-05-18T00:40:36.904747Z","signature_status":"signed_v1","first_computed_at":"2026-05-18T00:40:36.904747Z","public_key_fingerprint":"8d4b5ee74e4693bcd1df2446408b0d54"},"source_kind":"arxiv","source_id":"1707.02434","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":"2026-05-18T00:40:36Z","supersedes":[],"prev_event":null,"signature":{"signature_status":"signed_v1","algorithm":"ed25519","key_id":"pith-v1-2026-05","public_key_fingerprint":"8d4b5ee74e4693bcd1df2446408b0d54","signature_b64":"4PznSoyjSKGPqxluyMmpqurPWHoNI8GXoNCNmvjVZOu3REr5GlD/L9WpibWSymbJAK7CVWei689IjKz2II7MBQ==","signed_message":"open_graph_event_sha256_bytes","signed_at":"2026-05-28T19:51:47.870204Z"},"content_sha256":"e3ba896a9815970191f941d73c1c59f338c0d59e4945dfc1d77504d7bb519638","schema_version":"1.0","event_id":"sha256:e3ba896a9815970191f941d73c1c59f338c0d59e4945dfc1d77504d7bb519638"},{"event_type":"graph_snapshot","subject_pith_number":"pith:2017:AHG5JOSCOS2AFE65GMVDJMBOUJ","target":"graph","payload":{"graph_snapshot":{"paper":{"title":"Two Peculiar Fast Transients in a Strongly Lensed Host Galaxy","license":"http://arxiv.org/licenses/nonexclusive-distrib/1.0/","headline":"","cross_cats":["astro-ph.SR"],"primary_cat":"astro-ph.GA","authors_text":"A. G. Riess, A. Hoag, A. Molino, A. V. Filippenko, A. Zitrin, B. J. Weiner, B. Mobasher, C. Grillo, C. McCully, G. B. Caminha, G. Brammer, G. Chirivi, I. Balestra, J. Hjorth, J. M. Diego, J. Richard, J. Selsing, K. B. Schmidt, K. Sharon, L.-G. Strolger, L. L. R. Williams, M. Bradac, M. Jauzac, M. Oguri, O. Graur, P. L. Kelly, P. Rosati, R. J. Foley, R. Kawamata, S. A. Rodney, S. Hemmati, S. H. Suyu, S. W. Jha, T. Broadhurst, T. Treu","submitted_at":"2017-07-08T12:54:10Z","abstract_excerpt":"A massive galaxy cluster can serve as a magnifying glass for distant stellar populations, with strong gravitational lensing exposing details in the lensed background galaxies that would otherwise be undetectable. The MACS J0416.1-2403 cluster (hereafter MACS0416) is one of the most efficient lenses in the sky, and in 2014 it was observed with high-cadence imaging from the Hubble Space Telescope (HST). Here we describe two unusual transient events that appeared behind MACS0416 in a strongly lensed galaxy at redshift $z = 1.0054 \\pm 0.0002$. These transients---designated HFF14Spo-NW and HFF14Spo"},"claims":{"count":0,"items":[],"snapshot_sha256":"258153158e38e3291e3d48162225fcdb2d5a3ed65a07baac614ab91432fd4f57"},"source":{"id":"1707.02434","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":"2026-05-18T00:40:36Z","supersedes":[],"prev_event":null,"signature":{"signature_status":"signed_v1","algorithm":"ed25519","key_id":"pith-v1-2026-05","public_key_fingerprint":"8d4b5ee74e4693bcd1df2446408b0d54","signature_b64":"DGhmGw1DQ+8G1a9CTGI4ggD0GO6T3e4+Cue4MGCF7gctvPJv6o/m7VceoKasJfvOQczLy0BKyLdHq30sIQfEAw==","signed_message":"open_graph_event_sha256_bytes","signed_at":"2026-05-28T19:51:47.870719Z"},"content_sha256":"9962c197cc8426f5c9b5da71673ab53942115c896c73b5e62b41d99865710aa3","schema_version":"1.0","event_id":"sha256:9962c197cc8426f5c9b5da71673ab53942115c896c73b5e62b41d99865710aa3"}],"timestamp_proofs":[],"mirror_hints":[{"mirror_type":"https","name":"Pith Resolver","base_url":"https://pith.science","bundle_url":"https://pith.science/pith/AHG5JOSCOS2AFE65GMVDJMBOUJ/bundle.json","state_url":"https://pith.science/pith/AHG5JOSCOS2AFE65GMVDJMBOUJ/state.json","well_known_bundle_url":"https://pith.science/.well-known/pith/AHG5JOSCOS2AFE65GMVDJMBOUJ/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":"2026-05-28T19:51:47Z","links":{"resolver":"https://pith.science/pith/AHG5JOSCOS2AFE65GMVDJMBOUJ","bundle":"https://pith.science/pith/AHG5JOSCOS2AFE65GMVDJMBOUJ/bundle.json","state":"https://pith.science/pith/AHG5JOSCOS2AFE65GMVDJMBOUJ/state.json","well_known_bundle":"https://pith.science/.well-known/pith/AHG5JOSCOS2AFE65GMVDJMBOUJ/bundle.json"},"state":{"state_type":"pith_open_graph_state","state_version":"1.0","pith_number":"pith:2017:AHG5JOSCOS2AFE65GMVDJMBOUJ","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":"a36b799f81dcb93d53be0d9ee03de5be075aa9310ad6e3f442743a10793d3511","cross_cats_sorted":["astro-ph.SR"],"license":"http://arxiv.org/licenses/nonexclusive-distrib/1.0/","primary_cat":"astro-ph.GA","submitted_at":"2017-07-08T12:54:10Z","title_canon_sha256":"4fc8f65d0aaa7d126a48a37e7b1a11d92954ee4162b5d3158c387d020a875a66"},"schema_version":"1.0","source":{"id":"1707.02434","kind":"arxiv","version":1}},"source_aliases":[{"alias_kind":"arxiv","alias_value":"1707.02434","created_at":"2026-05-18T00:40:36Z"},{"alias_kind":"arxiv_version","alias_value":"1707.02434v1","created_at":"2026-05-18T00:40:36Z"},{"alias_kind":"doi","alias_value":"10.48550/arxiv.1707.02434","created_at":"2026-05-18T00:40:36Z"},{"alias_kind":"pith_short_12","alias_value":"AHG5JOSCOS2A","created_at":"2026-05-18T12:31:05Z"},{"alias_kind":"pith_short_16","alias_value":"AHG5JOSCOS2AFE65","created_at":"2026-05-18T12:31:05Z"},{"alias_kind":"pith_short_8","alias_value":"AHG5JOSC","created_at":"2026-05-18T12:31:05Z"}],"graph_snapshots":[{"event_id":"sha256:9962c197cc8426f5c9b5da71673ab53942115c896c73b5e62b41d99865710aa3","target":"graph","created_at":"2026-05-18T00:40:36Z","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":"A massive galaxy cluster can serve as a magnifying glass for distant stellar populations, with strong gravitational lensing exposing details in the lensed background galaxies that would otherwise be undetectable. The MACS J0416.1-2403 cluster (hereafter MACS0416) is one of the most efficient lenses in the sky, and in 2014 it was observed with high-cadence imaging from the Hubble Space Telescope (HST). Here we describe two unusual transient events that appeared behind MACS0416 in a strongly lensed galaxy at redshift $z = 1.0054 \\pm 0.0002$. These transients---designated HFF14Spo-NW and HFF14Spo","authors_text":"A. G. Riess, A. Hoag, A. Molino, A. V. Filippenko, A. Zitrin, B. J. Weiner, B. Mobasher, C. Grillo, C. McCully, G. B. Caminha, G. Brammer, G. Chirivi, I. Balestra, J. Hjorth, J. M. Diego, J. Richard, J. Selsing, K. B. Schmidt, K. Sharon, L.-G. Strolger, L. L. R. Williams, M. Bradac, M. Jauzac, M. Oguri, O. Graur, P. L. Kelly, P. Rosati, R. J. Foley, R. Kawamata, S. A. Rodney, S. Hemmati, S. H. Suyu, S. W. Jha, T. Broadhurst, T. Treu","cross_cats":["astro-ph.SR"],"headline":"","license":"http://arxiv.org/licenses/nonexclusive-distrib/1.0/","primary_cat":"astro-ph.GA","submitted_at":"2017-07-08T12:54:10Z","title":"Two Peculiar Fast Transients in a Strongly Lensed Host Galaxy"},"references":{"count":0,"internal_anchors":0,"resolved_work":0,"sample":[],"snapshot_sha256":"258153158e38e3291e3d48162225fcdb2d5a3ed65a07baac614ab91432fd4f57"},"source":{"id":"1707.02434","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:e3ba896a9815970191f941d73c1c59f338c0d59e4945dfc1d77504d7bb519638","target":"record","created_at":"2026-05-18T00:40:36Z","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":"a36b799f81dcb93d53be0d9ee03de5be075aa9310ad6e3f442743a10793d3511","cross_cats_sorted":["astro-ph.SR"],"license":"http://arxiv.org/licenses/nonexclusive-distrib/1.0/","primary_cat":"astro-ph.GA","submitted_at":"2017-07-08T12:54:10Z","title_canon_sha256":"4fc8f65d0aaa7d126a48a37e7b1a11d92954ee4162b5d3158c387d020a875a66"},"schema_version":"1.0","source":{"id":"1707.02434","kind":"arxiv","version":1}},"canonical_sha256":"01cdd4ba4274b40293dd332a34b02ea2792664b970dfb19735e74ed5150b8c86","receipt":{"algorithm":"ed25519","builder_version":"pith-number-builder-2026-05-17-v1","canonical_sha256":"01cdd4ba4274b40293dd332a34b02ea2792664b970dfb19735e74ed5150b8c86","first_computed_at":"2026-05-18T00:40:36.904747Z","key_id":"pith-v1-2026-05","kind":"pith_receipt","last_reissued_at":"2026-05-18T00:40:36.904747Z","public_key_fingerprint":"8d4b5ee74e4693bcd1df2446408b0d54","receipt_version":"0.3","signature_b64":"Q8ShySwEzo9sGXFnI/GEq9bMNCGXpTGgF8yEESZVSYWIxEOfJetsBKCwuklYg8AKpsq4BqIWP3LTsWHiB3TsDw==","signature_status":"signed_v1","signed_at":"2026-05-18T00:40:36.905410Z","signed_message":"canonical_sha256_bytes"},"source_id":"1707.02434","source_kind":"arxiv","source_version":1}}},"equivocations":[],"invalid_events":[],"applied_event_ids":["sha256:e3ba896a9815970191f941d73c1c59f338c0d59e4945dfc1d77504d7bb519638","sha256:9962c197cc8426f5c9b5da71673ab53942115c896c73b5e62b41d99865710aa3"],"state_sha256":"4c7ec18e119e06b000f30b4610b4e434c135b57e0785086966075b7258c9fb9f"},"bundle_signature":{"signature_status":"signed_v1","algorithm":"ed25519","key_id":"pith-v1-2026-05","public_key_fingerprint":"8d4b5ee74e4693bcd1df2446408b0d54","signature_b64":"PU31MKOyOdzy/2OT/7z1gXLM5E3kP6rZwQh5KT3CstIhA7h/6ARDQDGA8s2YFGiBt9+huvKQFtpSNJRxvn+8Cw==","signed_message":"bundle_sha256_bytes","signed_at":"2026-05-28T19:51:47.874146Z","bundle_sha256":"1298cc51756194dc0b3106887acee8cdc36bf9c9a143f4e254c7a64eec3222ab"}}