{"bundle_type":"pith_open_graph_bundle","bundle_version":"1.0","pith_number":"pith:2015:3O5RMHIATSC32NXTM373YFZXZ3","short_pith_number":"pith:3O5RMHIA","canonical_record":{"source":{"id":"1509.00170","kind":"arxiv","version":1},"metadata":{"license":"http://arxiv.org/licenses/nonexclusive-distrib/1.0/","primary_cat":"astro-ph.SR","submitted_at":"2015-09-01T08:06:28Z","cross_cats_sorted":[],"title_canon_sha256":"61b447dad0ae1b8735ab77de7f667cd171c6977c0045a7c4765480363dd372d0","abstract_canon_sha256":"9db922ea2dafda8f438d8f503fe0f45c45f5c698412bbdefea0886a83c6a87ac"},"schema_version":"1.0"},"canonical_sha256":"dbbb161d009c85bd36f366ffbc1737cef5c261d5dcd205fced4eaac1bf3ef286","source":{"kind":"arxiv","id":"1509.00170","version":1},"source_aliases":[{"alias_kind":"arxiv","alias_value":"1509.00170","created_at":"2026-05-18T01:21:31Z"},{"alias_kind":"arxiv_version","alias_value":"1509.00170v1","created_at":"2026-05-18T01:21:31Z"},{"alias_kind":"doi","alias_value":"10.48550/arxiv.1509.00170","created_at":"2026-05-18T01:21:31Z"},{"alias_kind":"pith_short_12","alias_value":"3O5RMHIATSC3","created_at":"2026-05-18T12:29:02Z"},{"alias_kind":"pith_short_16","alias_value":"3O5RMHIATSC32NXT","created_at":"2026-05-18T12:29:02Z"},{"alias_kind":"pith_short_8","alias_value":"3O5RMHIA","created_at":"2026-05-18T12:29:02Z"}],"events":[{"event_type":"record_created","subject_pith_number":"pith:2015:3O5RMHIATSC32NXTM373YFZXZ3","target":"record","payload":{"canonical_record":{"source":{"id":"1509.00170","kind":"arxiv","version":1},"metadata":{"license":"http://arxiv.org/licenses/nonexclusive-distrib/1.0/","primary_cat":"astro-ph.SR","submitted_at":"2015-09-01T08:06:28Z","cross_cats_sorted":[],"title_canon_sha256":"61b447dad0ae1b8735ab77de7f667cd171c6977c0045a7c4765480363dd372d0","abstract_canon_sha256":"9db922ea2dafda8f438d8f503fe0f45c45f5c698412bbdefea0886a83c6a87ac"},"schema_version":"1.0"},"canonical_sha256":"dbbb161d009c85bd36f366ffbc1737cef5c261d5dcd205fced4eaac1bf3ef286","receipt":{"kind":"pith_receipt","key_id":"pith-v1-2026-05","algorithm":"ed25519","signed_at":"2026-05-18T01:21:31.335989Z","signature_b64":"b/d6nRMflGmtymNmtEMKNsTyZ+CVmPOs8F9n98HQwEOjbmCR8vqlwh9SMFvKGu3lV7LH18spcXAy4f6A9R8hDw==","signed_message":"canonical_sha256_bytes","builder_version":"pith-number-builder-2026-05-17-v1","receipt_version":"0.3","canonical_sha256":"dbbb161d009c85bd36f366ffbc1737cef5c261d5dcd205fced4eaac1bf3ef286","last_reissued_at":"2026-05-18T01:21:31.335308Z","signature_status":"signed_v1","first_computed_at":"2026-05-18T01:21:31.335308Z","public_key_fingerprint":"8d4b5ee74e4693bcd1df2446408b0d54"},"source_kind":"arxiv","source_id":"1509.00170","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":"2026-05-18T01:21:31Z","supersedes":[],"prev_event":null,"signature":{"signature_status":"signed_v1","algorithm":"ed25519","key_id":"pith-v1-2026-05","public_key_fingerprint":"8d4b5ee74e4693bcd1df2446408b0d54","signature_b64":"O1QcaJDrtsslhA03mSn0O8ebkWuk65VJZzyY9HERQ26glZyirTfX5EadtcTa9QCBGh00lIjDzm9LMJITjfT8BA==","signed_message":"open_graph_event_sha256_bytes","signed_at":"2026-06-28T21:53:02.811086Z"},"content_sha256":"dd24361a33d73bfb56d641816681f62b0eb677b4dc3956f96e5081d3bc965969","schema_version":"1.0","event_id":"sha256:dd24361a33d73bfb56d641816681f62b0eb677b4dc3956f96e5081d3bc965969"},{"event_type":"graph_snapshot","subject_pith_number":"pith:2015:3O5RMHIATSC32NXTM373YFZXZ3","target":"graph","payload":{"graph_snapshot":{"paper":{"title":"Accretion, disks, and magnetic activity in the TW Hya association","license":"http://arxiv.org/licenses/nonexclusive-distrib/1.0/","headline":"","cross_cats":[],"primary_cat":"astro-ph.SR","authors_text":"(2) INAF / Osservatorio Astrofisico di Catania, (3) INAF / Osservatorio Astronomico di Capodimonte), A. Frasca (2), B.Stelzer (1), J.M. Alcala (3) ((1) INAF / Osservatorio Astronomico di Palermo","submitted_at":"2015-09-01T08:06:28Z","abstract_excerpt":"We present new photometric and spectroscopic data for the M-type members of the TW Hya association with the aim of a comprehensive study of accretion, disks and magnetic activity at the critical age of ~10 Myr where circumstellar matter disappears."},"claims":{"count":0,"items":[],"snapshot_sha256":"258153158e38e3291e3d48162225fcdb2d5a3ed65a07baac614ab91432fd4f57"},"source":{"id":"1509.00170","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":"2026-05-18T01:21:31Z","supersedes":[],"prev_event":null,"signature":{"signature_status":"signed_v1","algorithm":"ed25519","key_id":"pith-v1-2026-05","public_key_fingerprint":"8d4b5ee74e4693bcd1df2446408b0d54","signature_b64":"4BHNE54LgHfv3jsezk/i6cXJPQVMsDlBthwh8s6izf2d+QwBzqP9TBQzSTDFcVLZzBw63HoKo7+5zwHrCaISDA==","signed_message":"open_graph_event_sha256_bytes","signed_at":"2026-06-28T21:53:02.811425Z"},"content_sha256":"7aa109ac67949c8d005781cffd689e297b85b976dcd849286ad455af01151289","schema_version":"1.0","event_id":"sha256:7aa109ac67949c8d005781cffd689e297b85b976dcd849286ad455af01151289"}],"timestamp_proofs":[],"mirror_hints":[{"mirror_type":"https","name":"Pith Resolver","base_url":"https://pith.science","bundle_url":"https://pith.science/pith/3O5RMHIATSC32NXTM373YFZXZ3/bundle.json","state_url":"https://pith.science/pith/3O5RMHIATSC32NXTM373YFZXZ3/state.json","well_known_bundle_url":"https://pith.science/.well-known/pith/3O5RMHIATSC32NXTM373YFZXZ3/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":"2026-06-28T21:53:02Z","links":{"resolver":"https://pith.science/pith/3O5RMHIATSC32NXTM373YFZXZ3","bundle":"https://pith.science/pith/3O5RMHIATSC32NXTM373YFZXZ3/bundle.json","state":"https://pith.science/pith/3O5RMHIATSC32NXTM373YFZXZ3/state.json","well_known_bundle":"https://pith.science/.well-known/pith/3O5RMHIATSC32NXTM373YFZXZ3/bundle.json"},"state":{"state_type":"pith_open_graph_state","state_version":"1.0","pith_number":"pith:2015:3O5RMHIATSC32NXTM373YFZXZ3","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":"9db922ea2dafda8f438d8f503fe0f45c45f5c698412bbdefea0886a83c6a87ac","cross_cats_sorted":[],"license":"http://arxiv.org/licenses/nonexclusive-distrib/1.0/","primary_cat":"astro-ph.SR","submitted_at":"2015-09-01T08:06:28Z","title_canon_sha256":"61b447dad0ae1b8735ab77de7f667cd171c6977c0045a7c4765480363dd372d0"},"schema_version":"1.0","source":{"id":"1509.00170","kind":"arxiv","version":1}},"source_aliases":[{"alias_kind":"arxiv","alias_value":"1509.00170","created_at":"2026-05-18T01:21:31Z"},{"alias_kind":"arxiv_version","alias_value":"1509.00170v1","created_at":"2026-05-18T01:21:31Z"},{"alias_kind":"doi","alias_value":"10.48550/arxiv.1509.00170","created_at":"2026-05-18T01:21:31Z"},{"alias_kind":"pith_short_12","alias_value":"3O5RMHIATSC3","created_at":"2026-05-18T12:29:02Z"},{"alias_kind":"pith_short_16","alias_value":"3O5RMHIATSC32NXT","created_at":"2026-05-18T12:29:02Z"},{"alias_kind":"pith_short_8","alias_value":"3O5RMHIA","created_at":"2026-05-18T12:29:02Z"}],"graph_snapshots":[{"event_id":"sha256:7aa109ac67949c8d005781cffd689e297b85b976dcd849286ad455af01151289","target":"graph","created_at":"2026-05-18T01:21:31Z","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 present new photometric and spectroscopic data for the M-type members of the TW Hya association with the aim of a comprehensive study of accretion, disks and magnetic activity at the critical age of ~10 Myr where circumstellar matter disappears.","authors_text":"(2) INAF / Osservatorio Astrofisico di Catania, (3) INAF / Osservatorio Astronomico di Capodimonte), A. Frasca (2), B.Stelzer (1), J.M. Alcala (3) ((1) INAF / Osservatorio Astronomico di Palermo","cross_cats":[],"headline":"","license":"http://arxiv.org/licenses/nonexclusive-distrib/1.0/","primary_cat":"astro-ph.SR","submitted_at":"2015-09-01T08:06:28Z","title":"Accretion, disks, and magnetic activity in the TW Hya association"},"references":{"count":0,"internal_anchors":0,"resolved_work":0,"sample":[],"snapshot_sha256":"258153158e38e3291e3d48162225fcdb2d5a3ed65a07baac614ab91432fd4f57"},"source":{"id":"1509.00170","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:dd24361a33d73bfb56d641816681f62b0eb677b4dc3956f96e5081d3bc965969","target":"record","created_at":"2026-05-18T01:21:31Z","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":"9db922ea2dafda8f438d8f503fe0f45c45f5c698412bbdefea0886a83c6a87ac","cross_cats_sorted":[],"license":"http://arxiv.org/licenses/nonexclusive-distrib/1.0/","primary_cat":"astro-ph.SR","submitted_at":"2015-09-01T08:06:28Z","title_canon_sha256":"61b447dad0ae1b8735ab77de7f667cd171c6977c0045a7c4765480363dd372d0"},"schema_version":"1.0","source":{"id":"1509.00170","kind":"arxiv","version":1}},"canonical_sha256":"dbbb161d009c85bd36f366ffbc1737cef5c261d5dcd205fced4eaac1bf3ef286","receipt":{"algorithm":"ed25519","builder_version":"pith-number-builder-2026-05-17-v1","canonical_sha256":"dbbb161d009c85bd36f366ffbc1737cef5c261d5dcd205fced4eaac1bf3ef286","first_computed_at":"2026-05-18T01:21:31.335308Z","key_id":"pith-v1-2026-05","kind":"pith_receipt","last_reissued_at":"2026-05-18T01:21:31.335308Z","public_key_fingerprint":"8d4b5ee74e4693bcd1df2446408b0d54","receipt_version":"0.3","signature_b64":"b/d6nRMflGmtymNmtEMKNsTyZ+CVmPOs8F9n98HQwEOjbmCR8vqlwh9SMFvKGu3lV7LH18spcXAy4f6A9R8hDw==","signature_status":"signed_v1","signed_at":"2026-05-18T01:21:31.335989Z","signed_message":"canonical_sha256_bytes"},"source_id":"1509.00170","source_kind":"arxiv","source_version":1}}},"equivocations":[],"invalid_events":[],"applied_event_ids":["sha256:dd24361a33d73bfb56d641816681f62b0eb677b4dc3956f96e5081d3bc965969","sha256:7aa109ac67949c8d005781cffd689e297b85b976dcd849286ad455af01151289"],"state_sha256":"a2be92fb51999bd5e1a21ce8c55797b089d1bed08500802667704fd4e2762c31"},"bundle_signature":{"signature_status":"signed_v1","algorithm":"ed25519","key_id":"pith-v1-2026-05","public_key_fingerprint":"8d4b5ee74e4693bcd1df2446408b0d54","signature_b64":"FMxfIW/WMjJnhghD677M/v2XA2ZGSVN3o/TLjTO9vSV+op38+gMYRTtOv5vlFWUyVCU69iLKgHFH7wKlC9AWDA==","signed_message":"bundle_sha256_bytes","signed_at":"2026-06-28T21:53:02.813246Z","bundle_sha256":"6c9bd65785aa3387120dac29bfb5c91b0629c70aab675514e767b64a6c26a67f"}}