{"bundle_type":"pith_open_graph_bundle","bundle_version":"1.0","pith_number":"pith:2013:7SOYNNCPENMZZPIZCZFVZUYXF5","short_pith_number":"pith:7SOYNNCP","canonical_record":{"source":{"id":"1301.3730","kind":"arxiv","version":1},"metadata":{"license":"http://arxiv.org/licenses/nonexclusive-distrib/1.0/","primary_cat":"astro-ph.SR","submitted_at":"2013-01-16T15:46:04Z","cross_cats_sorted":[],"title_canon_sha256":"70480ca9e3e7c3b4999411c0571ddc55d0c27b5efd38e2f292159f7e3eee9101","abstract_canon_sha256":"76e981d86ae80e50f2262cf2ce54db7529ff97e6f13b3d5ef22dc22c6a80ae5c"},"schema_version":"1.0"},"canonical_sha256":"fc9d86b44f23599cbd19164b5cd3172f4f65e2b33b206e8d8147a4680821e69a","source":{"kind":"arxiv","id":"1301.3730","version":1},"source_aliases":[{"alias_kind":"arxiv","alias_value":"1301.3730","created_at":"2026-05-18T03:36:16Z"},{"alias_kind":"arxiv_version","alias_value":"1301.3730v1","created_at":"2026-05-18T03:36:16Z"},{"alias_kind":"doi","alias_value":"10.48550/arxiv.1301.3730","created_at":"2026-05-18T03:36:16Z"},{"alias_kind":"pith_short_12","alias_value":"7SOYNNCPENMZ","created_at":"2026-05-18T12:27:36Z"},{"alias_kind":"pith_short_16","alias_value":"7SOYNNCPENMZZPIZ","created_at":"2026-05-18T12:27:36Z"},{"alias_kind":"pith_short_8","alias_value":"7SOYNNCP","created_at":"2026-05-18T12:27:36Z"}],"events":[{"event_type":"record_created","subject_pith_number":"pith:2013:7SOYNNCPENMZZPIZCZFVZUYXF5","target":"record","payload":{"canonical_record":{"source":{"id":"1301.3730","kind":"arxiv","version":1},"metadata":{"license":"http://arxiv.org/licenses/nonexclusive-distrib/1.0/","primary_cat":"astro-ph.SR","submitted_at":"2013-01-16T15:46:04Z","cross_cats_sorted":[],"title_canon_sha256":"70480ca9e3e7c3b4999411c0571ddc55d0c27b5efd38e2f292159f7e3eee9101","abstract_canon_sha256":"76e981d86ae80e50f2262cf2ce54db7529ff97e6f13b3d5ef22dc22c6a80ae5c"},"schema_version":"1.0"},"canonical_sha256":"fc9d86b44f23599cbd19164b5cd3172f4f65e2b33b206e8d8147a4680821e69a","receipt":{"kind":"pith_receipt","key_id":"pith-v1-2026-05","algorithm":"ed25519","signed_at":"2026-05-18T03:36:16.883917Z","signature_b64":"34rcNA8JCV9oxEfrriZeJx6wHSP3UZfXDKrVrZR9rnySiA/7WLI0fwXrcezXJCo+TMsLlM9+6YtdBbVyOUGOBQ==","signed_message":"canonical_sha256_bytes","builder_version":"pith-number-builder-2026-05-17-v1","receipt_version":"0.3","canonical_sha256":"fc9d86b44f23599cbd19164b5cd3172f4f65e2b33b206e8d8147a4680821e69a","last_reissued_at":"2026-05-18T03:36:16.883373Z","signature_status":"signed_v1","first_computed_at":"2026-05-18T03:36:16.883373Z","public_key_fingerprint":"8d4b5ee74e4693bcd1df2446408b0d54"},"source_kind":"arxiv","source_id":"1301.3730","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":"2026-05-18T03:36:16Z","supersedes":[],"prev_event":null,"signature":{"signature_status":"signed_v1","algorithm":"ed25519","key_id":"pith-v1-2026-05","public_key_fingerprint":"8d4b5ee74e4693bcd1df2446408b0d54","signature_b64":"pV/ZewZzI2ZBBXrI/WY/7XryxeUDIeFjQARvuZrnKFz9vxtw1exZDDsbhnAXIAm3lncCz4yBW37BMqlxYd3WBQ==","signed_message":"open_graph_event_sha256_bytes","signed_at":"2026-06-24T19:44:05.931390Z"},"content_sha256":"5fc9ae50837ea7009a812845215ea4acf867dff6d6cf18e58e254457d9103c12","schema_version":"1.0","event_id":"sha256:5fc9ae50837ea7009a812845215ea4acf867dff6d6cf18e58e254457d9103c12"},{"event_type":"graph_snapshot","subject_pith_number":"pith:2013:7SOYNNCPENMZZPIZCZFVZUYXF5","target":"graph","payload":{"graph_snapshot":{"paper":{"title":"The discovery of an anomalous RGB in M 2","license":"http://arxiv.org/licenses/nonexclusive-distrib/1.0/","headline":"","cross_cats":[],"primary_cat":"astro-ph.SR","authors_text":"A. Mucciarelli (UniBo), A. P. Milone (IAC), C. Lardo (UniBo), E. Pancino (INAF-OABO/ASI)","submitted_at":"2013-01-16T15:46:04Z","abstract_excerpt":"Using UV images taken with the Telescopio Nazionale Galileo, we discovered an anomalous sequence in the color-magnitude diagram of M 2. This feature appears as a narrow poor-populated red giant branch, which extends down to the sub giant branch region. We speculate that this new feature could be the extension of the faint component of the split sub giant branch recently discovered by Piotto et al. We identified in our UV images two CH stars detected in previous studies. These stars, which are both cluster members, fall on this redder sequence, suggesting indeed that the anomalous RGB should ha"},"claims":{"count":0,"items":[],"snapshot_sha256":"258153158e38e3291e3d48162225fcdb2d5a3ed65a07baac614ab91432fd4f57"},"source":{"id":"1301.3730","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":"2026-05-18T03:36:16Z","supersedes":[],"prev_event":null,"signature":{"signature_status":"signed_v1","algorithm":"ed25519","key_id":"pith-v1-2026-05","public_key_fingerprint":"8d4b5ee74e4693bcd1df2446408b0d54","signature_b64":"pPWDDarFaxZBB4dKWshudXabM5SRj/UZh6NKN+wfcuz1pkh2/orHIY+5fKBY4/PzefMLaNJHwwNFMJW5WqH2DA==","signed_message":"open_graph_event_sha256_bytes","signed_at":"2026-06-24T19:44:05.932032Z"},"content_sha256":"d9158fd279c4c21edde30af53a26737b047f2caef5ca32fdb001a9ee4ff7c241","schema_version":"1.0","event_id":"sha256:d9158fd279c4c21edde30af53a26737b047f2caef5ca32fdb001a9ee4ff7c241"}],"timestamp_proofs":[],"mirror_hints":[{"mirror_type":"https","name":"Pith Resolver","base_url":"https://pith.science","bundle_url":"https://pith.science/pith/7SOYNNCPENMZZPIZCZFVZUYXF5/bundle.json","state_url":"https://pith.science/pith/7SOYNNCPENMZZPIZCZFVZUYXF5/state.json","well_known_bundle_url":"https://pith.science/.well-known/pith/7SOYNNCPENMZZPIZCZFVZUYXF5/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":"2026-06-24T19:44:05Z","links":{"resolver":"https://pith.science/pith/7SOYNNCPENMZZPIZCZFVZUYXF5","bundle":"https://pith.science/pith/7SOYNNCPENMZZPIZCZFVZUYXF5/bundle.json","state":"https://pith.science/pith/7SOYNNCPENMZZPIZCZFVZUYXF5/state.json","well_known_bundle":"https://pith.science/.well-known/pith/7SOYNNCPENMZZPIZCZFVZUYXF5/bundle.json"},"state":{"state_type":"pith_open_graph_state","state_version":"1.0","pith_number":"pith:2013:7SOYNNCPENMZZPIZCZFVZUYXF5","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":"76e981d86ae80e50f2262cf2ce54db7529ff97e6f13b3d5ef22dc22c6a80ae5c","cross_cats_sorted":[],"license":"http://arxiv.org/licenses/nonexclusive-distrib/1.0/","primary_cat":"astro-ph.SR","submitted_at":"2013-01-16T15:46:04Z","title_canon_sha256":"70480ca9e3e7c3b4999411c0571ddc55d0c27b5efd38e2f292159f7e3eee9101"},"schema_version":"1.0","source":{"id":"1301.3730","kind":"arxiv","version":1}},"source_aliases":[{"alias_kind":"arxiv","alias_value":"1301.3730","created_at":"2026-05-18T03:36:16Z"},{"alias_kind":"arxiv_version","alias_value":"1301.3730v1","created_at":"2026-05-18T03:36:16Z"},{"alias_kind":"doi","alias_value":"10.48550/arxiv.1301.3730","created_at":"2026-05-18T03:36:16Z"},{"alias_kind":"pith_short_12","alias_value":"7SOYNNCPENMZ","created_at":"2026-05-18T12:27:36Z"},{"alias_kind":"pith_short_16","alias_value":"7SOYNNCPENMZZPIZ","created_at":"2026-05-18T12:27:36Z"},{"alias_kind":"pith_short_8","alias_value":"7SOYNNCP","created_at":"2026-05-18T12:27:36Z"}],"graph_snapshots":[{"event_id":"sha256:d9158fd279c4c21edde30af53a26737b047f2caef5ca32fdb001a9ee4ff7c241","target":"graph","created_at":"2026-05-18T03:36:16Z","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":"Using UV images taken with the Telescopio Nazionale Galileo, we discovered an anomalous sequence in the color-magnitude diagram of M 2. This feature appears as a narrow poor-populated red giant branch, which extends down to the sub giant branch region. We speculate that this new feature could be the extension of the faint component of the split sub giant branch recently discovered by Piotto et al. We identified in our UV images two CH stars detected in previous studies. These stars, which are both cluster members, fall on this redder sequence, suggesting indeed that the anomalous RGB should ha","authors_text":"A. Mucciarelli (UniBo), A. P. Milone (IAC), C. Lardo (UniBo), E. Pancino (INAF-OABO/ASI)","cross_cats":[],"headline":"","license":"http://arxiv.org/licenses/nonexclusive-distrib/1.0/","primary_cat":"astro-ph.SR","submitted_at":"2013-01-16T15:46:04Z","title":"The discovery of an anomalous RGB in M 2"},"references":{"count":0,"internal_anchors":0,"resolved_work":0,"sample":[],"snapshot_sha256":"258153158e38e3291e3d48162225fcdb2d5a3ed65a07baac614ab91432fd4f57"},"source":{"id":"1301.3730","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":"sha256:5fc9ae50837ea7009a812845215ea4acf867dff6d6cf18e58e254457d9103c12","target":"record","created_at":"2026-05-18T03:36:16Z","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":"76e981d86ae80e50f2262cf2ce54db7529ff97e6f13b3d5ef22dc22c6a80ae5c","cross_cats_sorted":[],"license":"http://arxiv.org/licenses/nonexclusive-distrib/1.0/","primary_cat":"astro-ph.SR","submitted_at":"2013-01-16T15:46:04Z","title_canon_sha256":"70480ca9e3e7c3b4999411c0571ddc55d0c27b5efd38e2f292159f7e3eee9101"},"schema_version":"1.0","source":{"id":"1301.3730","kind":"arxiv","version":1}},"canonical_sha256":"fc9d86b44f23599cbd19164b5cd3172f4f65e2b33b206e8d8147a4680821e69a","receipt":{"algorithm":"ed25519","builder_version":"pith-number-builder-2026-05-17-v1","canonical_sha256":"fc9d86b44f23599cbd19164b5cd3172f4f65e2b33b206e8d8147a4680821e69a","first_computed_at":"2026-05-18T03:36:16.883373Z","key_id":"pith-v1-2026-05","kind":"pith_receipt","last_reissued_at":"2026-05-18T03:36:16.883373Z","public_key_fingerprint":"8d4b5ee74e4693bcd1df2446408b0d54","receipt_version":"0.3","signature_b64":"34rcNA8JCV9oxEfrriZeJx6wHSP3UZfXDKrVrZR9rnySiA/7WLI0fwXrcezXJCo+TMsLlM9+6YtdBbVyOUGOBQ==","signature_status":"signed_v1","signed_at":"2026-05-18T03:36:16.883917Z","signed_message":"canonical_sha256_bytes"},"source_id":"1301.3730","source_kind":"arxiv","source_version":1}}},"equivocations":[],"invalid_events":[],"applied_event_ids":["sha256:5fc9ae50837ea7009a812845215ea4acf867dff6d6cf18e58e254457d9103c12","sha256:d9158fd279c4c21edde30af53a26737b047f2caef5ca32fdb001a9ee4ff7c241"],"state_sha256":"0f561be94a54da939d4a6e6789a9aeef21e6729e469c57440b6669b6d0487b98"},"bundle_signature":{"signature_status":"signed_v1","algorithm":"ed25519","key_id":"pith-v1-2026-05","public_key_fingerprint":"8d4b5ee74e4693bcd1df2446408b0d54","signature_b64":"VjovIoJcoJquu4Eqy1iC5P7hTyk6ahgxNuyv9VxzcxuILgvp0mZDme+NLV3NViMV3Bo97Z0b2QnswzzWWXKlCQ==","signed_message":"bundle_sha256_bytes","signed_at":"2026-06-24T19:44:05.935514Z","bundle_sha256":"79128cbe56b2ccd5e5d0f71f7680ee6df304847760d9e5779224d3b8d9280954"}}