{"bundle_type":"pith_open_graph_bundle","bundle_version":"1.0","pith_number":"pith:2014:AP5IPG2XXE2MOOJREUAUNAJLHB","short_pith_number":"pith:AP5IPG2X","canonical_record":{"source":{"id":"1410.6368","kind":"arxiv","version":1},"metadata":{"license":"http://arxiv.org/licenses/nonexclusive-distrib/1.0/","primary_cat":"astro-ph.GA","submitted_at":"2014-10-23T13:53:57Z","cross_cats_sorted":[],"title_canon_sha256":"38c4092ff15547fdff6f3a57ff7335f252d59c8fc07955f99e1bdab387d1ca83","abstract_canon_sha256":"282aa39f5a53bf0ec29dcc3f92494bfdfcd5143b1e319f6775acba9c841912d6"},"schema_version":"1.0"},"canonical_sha256":"03fa879b57b934c73931250146812b3846a2aff0073203c4813f550e7585359d","source":{"kind":"arxiv","id":"1410.6368","version":1},"source_aliases":[{"alias_kind":"arxiv","alias_value":"1410.6368","created_at":"2026-05-18T01:29:46Z"},{"alias_kind":"arxiv_version","alias_value":"1410.6368v1","created_at":"2026-05-18T01:29:46Z"},{"alias_kind":"doi","alias_value":"10.48550/arxiv.1410.6368","created_at":"2026-05-18T01:29:46Z"},{"alias_kind":"pith_short_12","alias_value":"AP5IPG2XXE2M","created_at":"2026-05-18T12:28:19Z"},{"alias_kind":"pith_short_16","alias_value":"AP5IPG2XXE2MOOJR","created_at":"2026-05-18T12:28:19Z"},{"alias_kind":"pith_short_8","alias_value":"AP5IPG2X","created_at":"2026-05-18T12:28:19Z"}],"events":[{"event_type":"record_created","subject_pith_number":"pith:2014:AP5IPG2XXE2MOOJREUAUNAJLHB","target":"record","payload":{"canonical_record":{"source":{"id":"1410.6368","kind":"arxiv","version":1},"metadata":{"license":"http://arxiv.org/licenses/nonexclusive-distrib/1.0/","primary_cat":"astro-ph.GA","submitted_at":"2014-10-23T13:53:57Z","cross_cats_sorted":[],"title_canon_sha256":"38c4092ff15547fdff6f3a57ff7335f252d59c8fc07955f99e1bdab387d1ca83","abstract_canon_sha256":"282aa39f5a53bf0ec29dcc3f92494bfdfcd5143b1e319f6775acba9c841912d6"},"schema_version":"1.0"},"canonical_sha256":"03fa879b57b934c73931250146812b3846a2aff0073203c4813f550e7585359d","receipt":{"kind":"pith_receipt","key_id":"pith-v1-2026-05","algorithm":"ed25519","signed_at":"2026-05-18T01:29:46.894763Z","signature_b64":"e1tmG1x3EWFwrVrfHWj0vlGS8bmIAZY9W5aK8VxT+6UwU8eXqrv1RYttzdgZfwbcapn3WKnYWUXkuIsfllAOBQ==","signed_message":"canonical_sha256_bytes","builder_version":"pith-number-builder-2026-05-17-v1","receipt_version":"0.3","canonical_sha256":"03fa879b57b934c73931250146812b3846a2aff0073203c4813f550e7585359d","last_reissued_at":"2026-05-18T01:29:46.894212Z","signature_status":"signed_v1","first_computed_at":"2026-05-18T01:29:46.894212Z","public_key_fingerprint":"8d4b5ee74e4693bcd1df2446408b0d54"},"source_kind":"arxiv","source_id":"1410.6368","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":"2026-05-18T01:29:46Z","supersedes":[],"prev_event":null,"signature":{"signature_status":"signed_v1","algorithm":"ed25519","key_id":"pith-v1-2026-05","public_key_fingerprint":"8d4b5ee74e4693bcd1df2446408b0d54","signature_b64":"9XyMUZCi1GmvE8TZ98EBBGKRfsK3Co5trUgN0JSWsyle9agMGnyzNGGIor8VdpEJ8/ijW0JboUpmyhbrbgjrAQ==","signed_message":"open_graph_event_sha256_bytes","signed_at":"2026-05-26T04:05:00.824811Z"},"content_sha256":"e580c639bb518ee2f6650991a95047b951259c1c59424036982630a2f5214354","schema_version":"1.0","event_id":"sha256:e580c639bb518ee2f6650991a95047b951259c1c59424036982630a2f5214354"},{"event_type":"graph_snapshot","subject_pith_number":"pith:2014:AP5IPG2XXE2MOOJREUAUNAJLHB","target":"graph","payload":{"graph_snapshot":{"paper":{"title":"Discovery of a stellar tidal stream around the Whale galaxy, NGC 4631","license":"http://arxiv.org/licenses/nonexclusive-distrib/1.0/","headline":"","cross_cats":[],"primary_cat":"astro-ph.GA","authors_text":"Austin), David Martinez-Delgado (ARI, Elena D'Onghia (Univ. Wisconsin), Eva K. Grebel (ARI, Gustavo Morales (ARI, Heidelberg), Karel Teuwen (ROSA Observatory), Pasadena), Rachael L. Beaton (OCI, R. Jay GaBany (Black Bird Observatory II), Taylor S. Chonis (Univ. Texas","submitted_at":"2014-10-23T13:53:57Z","abstract_excerpt":"We report the discovery of a giant stellar tidal stream in the halo of NGC 4631, a nearby edge-on spiral galaxy interacting with the spiral NGC 4656, in deep images taken with a 40-cm aperture robotic telescope. The stream has two components: a bridge-like feature extended between NGC 4631 and NGC 4656 (stream_SE) and an overdensity with extended features on the opposite side of the NGC 4631 disk (stream_NW). Together, these features extend more than 85 kpc and display a clear (g-r) colour gradient. The orientation of stream_SE relative to the orientations of NGC 4631 and NGC 4656 is not consi"},"claims":{"count":0,"items":[],"snapshot_sha256":"258153158e38e3291e3d48162225fcdb2d5a3ed65a07baac614ab91432fd4f57"},"source":{"id":"1410.6368","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":"2026-05-18T01:29:46Z","supersedes":[],"prev_event":null,"signature":{"signature_status":"signed_v1","algorithm":"ed25519","key_id":"pith-v1-2026-05","public_key_fingerprint":"8d4b5ee74e4693bcd1df2446408b0d54","signature_b64":"zEtZOV74kKOvcdjHYTo51MNlqEk8zct2qre/m4oJWjXL6jf9bzFPvffkdyvJYEvePwFY2qHaiI4eRQpcBN0uAg==","signed_message":"open_graph_event_sha256_bytes","signed_at":"2026-05-26T04:05:00.825302Z"},"content_sha256":"9ca8faea34a8fc41020ae5085aeed97ce681c4d564732b6525d11aecb74c1c9a","schema_version":"1.0","event_id":"sha256:9ca8faea34a8fc41020ae5085aeed97ce681c4d564732b6525d11aecb74c1c9a"}],"timestamp_proofs":[],"mirror_hints":[{"mirror_type":"https","name":"Pith Resolver","base_url":"https://pith.science","bundle_url":"https://pith.science/pith/AP5IPG2XXE2MOOJREUAUNAJLHB/bundle.json","state_url":"https://pith.science/pith/AP5IPG2XXE2MOOJREUAUNAJLHB/state.json","well_known_bundle_url":"https://pith.science/.well-known/pith/AP5IPG2XXE2MOOJREUAUNAJLHB/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":"2026-05-26T04:05:00Z","links":{"resolver":"https://pith.science/pith/AP5IPG2XXE2MOOJREUAUNAJLHB","bundle":"https://pith.science/pith/AP5IPG2XXE2MOOJREUAUNAJLHB/bundle.json","state":"https://pith.science/pith/AP5IPG2XXE2MOOJREUAUNAJLHB/state.json","well_known_bundle":"https://pith.science/.well-known/pith/AP5IPG2XXE2MOOJREUAUNAJLHB/bundle.json"},"state":{"state_type":"pith_open_graph_state","state_version":"1.0","pith_number":"pith:2014:AP5IPG2XXE2MOOJREUAUNAJLHB","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":"282aa39f5a53bf0ec29dcc3f92494bfdfcd5143b1e319f6775acba9c841912d6","cross_cats_sorted":[],"license":"http://arxiv.org/licenses/nonexclusive-distrib/1.0/","primary_cat":"astro-ph.GA","submitted_at":"2014-10-23T13:53:57Z","title_canon_sha256":"38c4092ff15547fdff6f3a57ff7335f252d59c8fc07955f99e1bdab387d1ca83"},"schema_version":"1.0","source":{"id":"1410.6368","kind":"arxiv","version":1}},"source_aliases":[{"alias_kind":"arxiv","alias_value":"1410.6368","created_at":"2026-05-18T01:29:46Z"},{"alias_kind":"arxiv_version","alias_value":"1410.6368v1","created_at":"2026-05-18T01:29:46Z"},{"alias_kind":"doi","alias_value":"10.48550/arxiv.1410.6368","created_at":"2026-05-18T01:29:46Z"},{"alias_kind":"pith_short_12","alias_value":"AP5IPG2XXE2M","created_at":"2026-05-18T12:28:19Z"},{"alias_kind":"pith_short_16","alias_value":"AP5IPG2XXE2MOOJR","created_at":"2026-05-18T12:28:19Z"},{"alias_kind":"pith_short_8","alias_value":"AP5IPG2X","created_at":"2026-05-18T12:28:19Z"}],"graph_snapshots":[{"event_id":"sha256:9ca8faea34a8fc41020ae5085aeed97ce681c4d564732b6525d11aecb74c1c9a","target":"graph","created_at":"2026-05-18T01:29:46Z","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":"We report the discovery of a giant stellar tidal stream in the halo of NGC 4631, a nearby edge-on spiral galaxy interacting with the spiral NGC 4656, in deep images taken with a 40-cm aperture robotic telescope. The stream has two components: a bridge-like feature extended between NGC 4631 and NGC 4656 (stream_SE) and an overdensity with extended features on the opposite side of the NGC 4631 disk (stream_NW). Together, these features extend more than 85 kpc and display a clear (g-r) colour gradient. The orientation of stream_SE relative to the orientations of NGC 4631 and NGC 4656 is not consi","authors_text":"Austin), David Martinez-Delgado (ARI, Elena D'Onghia (Univ. Wisconsin), Eva K. Grebel (ARI, Gustavo Morales (ARI, Heidelberg), Karel Teuwen (ROSA Observatory), Pasadena), Rachael L. Beaton (OCI, R. Jay GaBany (Black Bird Observatory II), Taylor S. Chonis (Univ. Texas","cross_cats":[],"headline":"","license":"http://arxiv.org/licenses/nonexclusive-distrib/1.0/","primary_cat":"astro-ph.GA","submitted_at":"2014-10-23T13:53:57Z","title":"Discovery of a stellar tidal stream around the Whale galaxy, NGC 4631"},"references":{"count":0,"internal_anchors":0,"resolved_work":0,"sample":[],"snapshot_sha256":"258153158e38e3291e3d48162225fcdb2d5a3ed65a07baac614ab91432fd4f57"},"source":{"id":"1410.6368","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:e580c639bb518ee2f6650991a95047b951259c1c59424036982630a2f5214354","target":"record","created_at":"2026-05-18T01:29:46Z","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":"282aa39f5a53bf0ec29dcc3f92494bfdfcd5143b1e319f6775acba9c841912d6","cross_cats_sorted":[],"license":"http://arxiv.org/licenses/nonexclusive-distrib/1.0/","primary_cat":"astro-ph.GA","submitted_at":"2014-10-23T13:53:57Z","title_canon_sha256":"38c4092ff15547fdff6f3a57ff7335f252d59c8fc07955f99e1bdab387d1ca83"},"schema_version":"1.0","source":{"id":"1410.6368","kind":"arxiv","version":1}},"canonical_sha256":"03fa879b57b934c73931250146812b3846a2aff0073203c4813f550e7585359d","receipt":{"algorithm":"ed25519","builder_version":"pith-number-builder-2026-05-17-v1","canonical_sha256":"03fa879b57b934c73931250146812b3846a2aff0073203c4813f550e7585359d","first_computed_at":"2026-05-18T01:29:46.894212Z","key_id":"pith-v1-2026-05","kind":"pith_receipt","last_reissued_at":"2026-05-18T01:29:46.894212Z","public_key_fingerprint":"8d4b5ee74e4693bcd1df2446408b0d54","receipt_version":"0.3","signature_b64":"e1tmG1x3EWFwrVrfHWj0vlGS8bmIAZY9W5aK8VxT+6UwU8eXqrv1RYttzdgZfwbcapn3WKnYWUXkuIsfllAOBQ==","signature_status":"signed_v1","signed_at":"2026-05-18T01:29:46.894763Z","signed_message":"canonical_sha256_bytes"},"source_id":"1410.6368","source_kind":"arxiv","source_version":1}}},"equivocations":[],"invalid_events":[],"applied_event_ids":["sha256:e580c639bb518ee2f6650991a95047b951259c1c59424036982630a2f5214354","sha256:9ca8faea34a8fc41020ae5085aeed97ce681c4d564732b6525d11aecb74c1c9a"],"state_sha256":"57329f6f8cba5c6c88572cc55fd3861662fb10994d7d1cc6a280a581720e3d21"},"bundle_signature":{"signature_status":"signed_v1","algorithm":"ed25519","key_id":"pith-v1-2026-05","public_key_fingerprint":"8d4b5ee74e4693bcd1df2446408b0d54","signature_b64":"nCn1fKQngHltxftz7E6tXrcgDs57wFmMVNxffalJxUa7ZYaqJhEIahaHfYRu8btliTaMTd3wrzdicieO6WIrAw==","signed_message":"bundle_sha256_bytes","signed_at":"2026-05-26T04:05:00.827978Z","bundle_sha256":"b936757a1bc970ba4d0f5c24f807313766ed8c5d371776f23802a9ccef2df0c0"}}