{"bundle_type":"pith_open_graph_bundle","bundle_version":"1.0","pith_number":"pith:2009:GG4KIDJBDXT2YWMK3BIRYYWS6S","short_pith_number":"pith:GG4KIDJB","canonical_record":{"source":{"id":"0908.1944","kind":"arxiv","version":1},"metadata":{"license":"http://arxiv.org/licenses/nonexclusive-distrib/1.0/","primary_cat":"nucl-ex","submitted_at":"2009-08-13T17:58:28Z","cross_cats_sorted":[],"title_canon_sha256":"3941f45e4844c96195b2f27590cacdf4fc41c04683a3eb0dc2eb50f83be8e209","abstract_canon_sha256":"0350deed5d326511e9268ea029c4058e629ad674993adef90102ed342bc8e3e3"},"schema_version":"1.0"},"canonical_sha256":"31b8a40d211de7ac598ad8511c62d2f4aa249f6a684767c8263dd721bbe1c5e9","source":{"kind":"arxiv","id":"0908.1944","version":1},"source_aliases":[{"alias_kind":"arxiv","alias_value":"0908.1944","created_at":"2026-05-18T02:34:37Z"},{"alias_kind":"arxiv_version","alias_value":"0908.1944v1","created_at":"2026-05-18T02:34:37Z"},{"alias_kind":"doi","alias_value":"10.48550/arxiv.0908.1944","created_at":"2026-05-18T02:34:37Z"},{"alias_kind":"pith_short_12","alias_value":"GG4KIDJBDXT2","created_at":"2026-05-18T12:25:59Z"},{"alias_kind":"pith_short_16","alias_value":"GG4KIDJBDXT2YWMK","created_at":"2026-05-18T12:25:59Z"},{"alias_kind":"pith_short_8","alias_value":"GG4KIDJB","created_at":"2026-05-18T12:25:59Z"}],"events":[{"event_type":"record_created","subject_pith_number":"pith:2009:GG4KIDJBDXT2YWMK3BIRYYWS6S","target":"record","payload":{"canonical_record":{"source":{"id":"0908.1944","kind":"arxiv","version":1},"metadata":{"license":"http://arxiv.org/licenses/nonexclusive-distrib/1.0/","primary_cat":"nucl-ex","submitted_at":"2009-08-13T17:58:28Z","cross_cats_sorted":[],"title_canon_sha256":"3941f45e4844c96195b2f27590cacdf4fc41c04683a3eb0dc2eb50f83be8e209","abstract_canon_sha256":"0350deed5d326511e9268ea029c4058e629ad674993adef90102ed342bc8e3e3"},"schema_version":"1.0"},"canonical_sha256":"31b8a40d211de7ac598ad8511c62d2f4aa249f6a684767c8263dd721bbe1c5e9","receipt":{"kind":"pith_receipt","key_id":"pith-v1-2026-05","algorithm":"ed25519","signed_at":"2026-05-18T02:34:37.868550Z","signature_b64":"qbX96MYjRkdDEjtYdZV7znMjHl4l9w9FER7wznjeLQRcukxAENoy8StTly79o4OqfEgL/iT0JoHV0TCCWxjxDQ==","signed_message":"canonical_sha256_bytes","builder_version":"pith-number-builder-2026-05-17-v1","receipt_version":"0.3","canonical_sha256":"31b8a40d211de7ac598ad8511c62d2f4aa249f6a684767c8263dd721bbe1c5e9","last_reissued_at":"2026-05-18T02:34:37.868049Z","signature_status":"signed_v1","first_computed_at":"2026-05-18T02:34:37.868049Z","public_key_fingerprint":"8d4b5ee74e4693bcd1df2446408b0d54"},"source_kind":"arxiv","source_id":"0908.1944","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":"2026-05-18T02:34:37Z","supersedes":[],"prev_event":null,"signature":{"signature_status":"signed_v1","algorithm":"ed25519","key_id":"pith-v1-2026-05","public_key_fingerprint":"8d4b5ee74e4693bcd1df2446408b0d54","signature_b64":"FcpJ12N2LrEjynS0JHynptg32xiBty9USvZxoNiGJFepsE9iqcyWGOftTPFKvDOHtV0xqyJUmvyy2qLejE2ZCw==","signed_message":"open_graph_event_sha256_bytes","signed_at":"2026-05-19T02:20:04.448039Z"},"content_sha256":"f026f9495c756727c92cc9b5cb9a80fc0850d9b91c992f19295f1a657582c072","schema_version":"1.0","event_id":"sha256:f026f9495c756727c92cc9b5cb9a80fc0850d9b91c992f19295f1a657582c072"},{"event_type":"graph_snapshot","subject_pith_number":"pith:2009:GG4KIDJBDXT2YWMK3BIRYYWS6S","target":"graph","payload":{"graph_snapshot":{"paper":{"title":"Discovery of the Barium Isotopes","license":"http://arxiv.org/licenses/nonexclusive-distrib/1.0/","headline":"","cross_cats":[],"primary_cat":"nucl-ex","authors_text":"A. Fritsch, A. Schuh, A. Shore, J.Q. Ginepro, M. Heim, M. Thoennessen","submitted_at":"2009-08-13T17:58:28Z","abstract_excerpt":"Thirty-eight barium isotopes have so far been observed; the discovery of these isotopes is discussed. For each isotope a brief summary of the first refereed publication, including the production and identification method, is presented."},"claims":{"count":0,"items":[],"snapshot_sha256":"258153158e38e3291e3d48162225fcdb2d5a3ed65a07baac614ab91432fd4f57"},"source":{"id":"0908.1944","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":"2026-05-18T02:34:37Z","supersedes":[],"prev_event":null,"signature":{"signature_status":"signed_v1","algorithm":"ed25519","key_id":"pith-v1-2026-05","public_key_fingerprint":"8d4b5ee74e4693bcd1df2446408b0d54","signature_b64":"dghEegpsZEzeu8pPolZ9cGUtOmqblSD2Z/FMELgClmOMUWR3Z7hPiW17ba3XWtWnn0SFrNgzZKJvd2y9mNPiBw==","signed_message":"open_graph_event_sha256_bytes","signed_at":"2026-05-19T02:20:04.448396Z"},"content_sha256":"eeddedab6a9baf4674afe05f348f7e23127bd67940b3eb5b93699b69ccdf86e2","schema_version":"1.0","event_id":"sha256:eeddedab6a9baf4674afe05f348f7e23127bd67940b3eb5b93699b69ccdf86e2"}],"timestamp_proofs":[],"mirror_hints":[{"mirror_type":"https","name":"Pith Resolver","base_url":"https://pith.science","bundle_url":"https://pith.science/pith/GG4KIDJBDXT2YWMK3BIRYYWS6S/bundle.json","state_url":"https://pith.science/pith/GG4KIDJBDXT2YWMK3BIRYYWS6S/state.json","well_known_bundle_url":"https://pith.science/.well-known/pith/GG4KIDJBDXT2YWMK3BIRYYWS6S/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":"2026-05-19T02:20:04Z","links":{"resolver":"https://pith.science/pith/GG4KIDJBDXT2YWMK3BIRYYWS6S","bundle":"https://pith.science/pith/GG4KIDJBDXT2YWMK3BIRYYWS6S/bundle.json","state":"https://pith.science/pith/GG4KIDJBDXT2YWMK3BIRYYWS6S/state.json","well_known_bundle":"https://pith.science/.well-known/pith/GG4KIDJBDXT2YWMK3BIRYYWS6S/bundle.json"},"state":{"state_type":"pith_open_graph_state","state_version":"1.0","pith_number":"pith:2009:GG4KIDJBDXT2YWMK3BIRYYWS6S","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":"0350deed5d326511e9268ea029c4058e629ad674993adef90102ed342bc8e3e3","cross_cats_sorted":[],"license":"http://arxiv.org/licenses/nonexclusive-distrib/1.0/","primary_cat":"nucl-ex","submitted_at":"2009-08-13T17:58:28Z","title_canon_sha256":"3941f45e4844c96195b2f27590cacdf4fc41c04683a3eb0dc2eb50f83be8e209"},"schema_version":"1.0","source":{"id":"0908.1944","kind":"arxiv","version":1}},"source_aliases":[{"alias_kind":"arxiv","alias_value":"0908.1944","created_at":"2026-05-18T02:34:37Z"},{"alias_kind":"arxiv_version","alias_value":"0908.1944v1","created_at":"2026-05-18T02:34:37Z"},{"alias_kind":"doi","alias_value":"10.48550/arxiv.0908.1944","created_at":"2026-05-18T02:34:37Z"},{"alias_kind":"pith_short_12","alias_value":"GG4KIDJBDXT2","created_at":"2026-05-18T12:25:59Z"},{"alias_kind":"pith_short_16","alias_value":"GG4KIDJBDXT2YWMK","created_at":"2026-05-18T12:25:59Z"},{"alias_kind":"pith_short_8","alias_value":"GG4KIDJB","created_at":"2026-05-18T12:25:59Z"}],"graph_snapshots":[{"event_id":"sha256:eeddedab6a9baf4674afe05f348f7e23127bd67940b3eb5b93699b69ccdf86e2","target":"graph","created_at":"2026-05-18T02:34:37Z","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":"Thirty-eight barium isotopes have so far been observed; the discovery of these isotopes is discussed. For each isotope a brief summary of the first refereed publication, including the production and identification method, is presented.","authors_text":"A. Fritsch, A. Schuh, A. Shore, J.Q. Ginepro, M. Heim, M. Thoennessen","cross_cats":[],"headline":"","license":"http://arxiv.org/licenses/nonexclusive-distrib/1.0/","primary_cat":"nucl-ex","submitted_at":"2009-08-13T17:58:28Z","title":"Discovery of the Barium Isotopes"},"references":{"count":0,"internal_anchors":0,"resolved_work":0,"sample":[],"snapshot_sha256":"258153158e38e3291e3d48162225fcdb2d5a3ed65a07baac614ab91432fd4f57"},"source":{"id":"0908.1944","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:f026f9495c756727c92cc9b5cb9a80fc0850d9b91c992f19295f1a657582c072","target":"record","created_at":"2026-05-18T02:34:37Z","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":"0350deed5d326511e9268ea029c4058e629ad674993adef90102ed342bc8e3e3","cross_cats_sorted":[],"license":"http://arxiv.org/licenses/nonexclusive-distrib/1.0/","primary_cat":"nucl-ex","submitted_at":"2009-08-13T17:58:28Z","title_canon_sha256":"3941f45e4844c96195b2f27590cacdf4fc41c04683a3eb0dc2eb50f83be8e209"},"schema_version":"1.0","source":{"id":"0908.1944","kind":"arxiv","version":1}},"canonical_sha256":"31b8a40d211de7ac598ad8511c62d2f4aa249f6a684767c8263dd721bbe1c5e9","receipt":{"algorithm":"ed25519","builder_version":"pith-number-builder-2026-05-17-v1","canonical_sha256":"31b8a40d211de7ac598ad8511c62d2f4aa249f6a684767c8263dd721bbe1c5e9","first_computed_at":"2026-05-18T02:34:37.868049Z","key_id":"pith-v1-2026-05","kind":"pith_receipt","last_reissued_at":"2026-05-18T02:34:37.868049Z","public_key_fingerprint":"8d4b5ee74e4693bcd1df2446408b0d54","receipt_version":"0.3","signature_b64":"qbX96MYjRkdDEjtYdZV7znMjHl4l9w9FER7wznjeLQRcukxAENoy8StTly79o4OqfEgL/iT0JoHV0TCCWxjxDQ==","signature_status":"signed_v1","signed_at":"2026-05-18T02:34:37.868550Z","signed_message":"canonical_sha256_bytes"},"source_id":"0908.1944","source_kind":"arxiv","source_version":1}}},"equivocations":[],"invalid_events":[],"applied_event_ids":["sha256:f026f9495c756727c92cc9b5cb9a80fc0850d9b91c992f19295f1a657582c072","sha256:eeddedab6a9baf4674afe05f348f7e23127bd67940b3eb5b93699b69ccdf86e2"],"state_sha256":"3c9ff77d045a325b785bc28d5170e25fd6f2d383b09e50d22a11db086300a2bc"},"bundle_signature":{"signature_status":"signed_v1","algorithm":"ed25519","key_id":"pith-v1-2026-05","public_key_fingerprint":"8d4b5ee74e4693bcd1df2446408b0d54","signature_b64":"16DgeRD0b6MqwCL0al077ma/zXM/Mu8x8dKJtfuIYuLD1SlGrKOiYhKpkhgRsszVuIa69Oidae1ohYf+BGb3DA==","signed_message":"bundle_sha256_bytes","signed_at":"2026-05-19T02:20:04.449603Z","bundle_sha256":"41090f8039151324381ee1c10ac965f745d03c04592c1270a1038d1501a3b1f2"}}