{"bundle_type":"pith_open_graph_bundle","bundle_version":"1.0","pith_number":"pith:2026:MLKZTV2Z3YPQIIPGFTVISRJJK6","short_pith_number":"pith:MLKZTV2Z","canonical_record":{"source":{"id":"2606.11737","kind":"arxiv","version":1},"metadata":{"license":"http://arxiv.org/licenses/nonexclusive-distrib/1.0/","primary_cat":"astro-ph.EP","submitted_at":"2026-06-10T07:15:25Z","cross_cats_sorted":["astro-ph.IM","cs.LG"],"title_canon_sha256":"7c78c3a15c15609d3eb57c80f9df0769ff779027bde3f0d07069893e2e6bc682","abstract_canon_sha256":"bdd407931bfb72e5ea8dd937fa93a06e5cb7a08c11499e4b58498c820c18472f"},"schema_version":"1.0"},"canonical_sha256":"62d599d759de1f0421e62cea89452957a6e186068c58404f474f1b324c7ea9d2","source":{"kind":"arxiv","id":"2606.11737","version":1},"source_aliases":[{"alias_kind":"arxiv","alias_value":"2606.11737","created_at":"2026-06-11T01:10:05Z"},{"alias_kind":"arxiv_version","alias_value":"2606.11737v1","created_at":"2026-06-11T01:10:05Z"},{"alias_kind":"doi","alias_value":"10.48550/arxiv.2606.11737","created_at":"2026-06-11T01:10:05Z"},{"alias_kind":"pith_short_12","alias_value":"MLKZTV2Z3YPQ","created_at":"2026-06-11T01:10:05Z"},{"alias_kind":"pith_short_16","alias_value":"MLKZTV2Z3YPQIIPG","created_at":"2026-06-11T01:10:05Z"},{"alias_kind":"pith_short_8","alias_value":"MLKZTV2Z","created_at":"2026-06-11T01:10:05Z"}],"events":[{"event_type":"record_created","subject_pith_number":"pith:2026:MLKZTV2Z3YPQIIPGFTVISRJJK6","target":"record","payload":{"canonical_record":{"source":{"id":"2606.11737","kind":"arxiv","version":1},"metadata":{"license":"http://arxiv.org/licenses/nonexclusive-distrib/1.0/","primary_cat":"astro-ph.EP","submitted_at":"2026-06-10T07:15:25Z","cross_cats_sorted":["astro-ph.IM","cs.LG"],"title_canon_sha256":"7c78c3a15c15609d3eb57c80f9df0769ff779027bde3f0d07069893e2e6bc682","abstract_canon_sha256":"bdd407931bfb72e5ea8dd937fa93a06e5cb7a08c11499e4b58498c820c18472f"},"schema_version":"1.0"},"canonical_sha256":"62d599d759de1f0421e62cea89452957a6e186068c58404f474f1b324c7ea9d2","receipt":{"kind":"pith_receipt","key_id":"pith-v1-2026-05","algorithm":"ed25519","signed_at":"2026-06-11T01:10:05.421908Z","signature_b64":"qO72EquvSus6NdCJ3ohnLI2Pt+ZkIuScV8p9l6+n9VaZNrIN3FtGWaQbUlFWqfBRKWQVBEczMGc2e+hqn2JjBQ==","signed_message":"canonical_sha256_bytes","builder_version":"pith-number-builder-2026-05-17-v1","receipt_version":"0.3","canonical_sha256":"62d599d759de1f0421e62cea89452957a6e186068c58404f474f1b324c7ea9d2","last_reissued_at":"2026-06-11T01:10:05.421147Z","signature_status":"signed_v1","first_computed_at":"2026-06-11T01:10:05.421147Z","public_key_fingerprint":"8d4b5ee74e4693bcd1df2446408b0d54"},"source_kind":"arxiv","source_id":"2606.11737","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":"2026-06-11T01:10:05Z","supersedes":[],"prev_event":null,"signature":{"signature_status":"signed_v1","algorithm":"ed25519","key_id":"pith-v1-2026-05","public_key_fingerprint":"8d4b5ee74e4693bcd1df2446408b0d54","signature_b64":"hy6fqMsUU9s0bV7h+3CIzai22MWxu4qnCISH8pdt82HWrRqfdsI9zNOQ3auLiFDSGehOAn9pa1wZcdDviPBhBA==","signed_message":"open_graph_event_sha256_bytes","signed_at":"2026-06-28T07:17:06.543094Z"},"content_sha256":"637b92d5aa18837eaf5c162a0fc3f077285f19dae6a44b5dd0676711734469f8","schema_version":"1.0","event_id":"sha256:637b92d5aa18837eaf5c162a0fc3f077285f19dae6a44b5dd0676711734469f8"},{"event_type":"graph_snapshot","subject_pith_number":"pith:2026:MLKZTV2Z3YPQIIPGFTVISRJJK6","target":"graph","payload":{"graph_snapshot":{"paper":{"title":"Machine-learning clustering of close-in exoplanet populations: links to pebble accretion","license":"http://arxiv.org/licenses/nonexclusive-distrib/1.0/","headline":"","cross_cats":["astro-ph.IM","cs.LG"],"primary_cat":"astro-ph.EP","authors_text":"Anders Johansen, Haiyang S. Wang, H. Jens Hoeijmakers, Yi Duann","submitted_at":"2026-06-10T07:15:25Z","abstract_excerpt":"Close-in exoplanets exhibit a wide range of orbital architectures and physical properties shaped by both formation conditions and migration processes. Although population-synthesis models predict distinct planetary populations, establishing a quantitative connection between observed exoplanets and synthetic populations remains challenging. We investigate the intrinsic organisation of close-in exoplanets using physically motivated dynamical parameters and connect the resulting populations to pebble-accretion formation pathways. A two-stage Gaussian mixture model (GMM) is applied to an observed "},"claims":{"count":0,"items":[],"snapshot_sha256":"258153158e38e3291e3d48162225fcdb2d5a3ed65a07baac614ab91432fd4f57"},"source":{"id":"2606.11737","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":""},"integrity":{"clean":true,"summary":{"advisory":0,"critical":0,"by_detector":{},"informational":0},"endpoint":"/pith/2606.11737/integrity.json","findings":[],"available":true,"detectors_run":[],"snapshot_sha256":"c28c3603d3b5d939e8dc4c7e95fa8dfce3d595e45f758748cecf8e644a296938"},"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":"2026-06-11T01:10:05Z","supersedes":[],"prev_event":null,"signature":{"signature_status":"signed_v1","algorithm":"ed25519","key_id":"pith-v1-2026-05","public_key_fingerprint":"8d4b5ee74e4693bcd1df2446408b0d54","signature_b64":"RkWLjbCjTLvMXHhYBcJRQpOf6zA3sKXE+LIkRKn0aor36Wc9jtU3feZbjsP7mfpdpRF09E6nK/MtE9HT2aqLBA==","signed_message":"open_graph_event_sha256_bytes","signed_at":"2026-06-28T07:17:06.543472Z"},"content_sha256":"31dca2d47c6fbe3aa8be27c74de3679ec9c545619d8845679064f9fa96a6fb91","schema_version":"1.0","event_id":"sha256:31dca2d47c6fbe3aa8be27c74de3679ec9c545619d8845679064f9fa96a6fb91"}],"timestamp_proofs":[],"mirror_hints":[{"mirror_type":"https","name":"Pith Resolver","base_url":"https://pith.science","bundle_url":"https://pith.science/pith/MLKZTV2Z3YPQIIPGFTVISRJJK6/bundle.json","state_url":"https://pith.science/pith/MLKZTV2Z3YPQIIPGFTVISRJJK6/state.json","well_known_bundle_url":"https://pith.science/.well-known/pith/MLKZTV2Z3YPQIIPGFTVISRJJK6/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":"2026-06-28T07:17:06Z","links":{"resolver":"https://pith.science/pith/MLKZTV2Z3YPQIIPGFTVISRJJK6","bundle":"https://pith.science/pith/MLKZTV2Z3YPQIIPGFTVISRJJK6/bundle.json","state":"https://pith.science/pith/MLKZTV2Z3YPQIIPGFTVISRJJK6/state.json","well_known_bundle":"https://pith.science/.well-known/pith/MLKZTV2Z3YPQIIPGFTVISRJJK6/bundle.json"},"state":{"state_type":"pith_open_graph_state","state_version":"1.0","pith_number":"pith:2026:MLKZTV2Z3YPQIIPGFTVISRJJK6","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":"bdd407931bfb72e5ea8dd937fa93a06e5cb7a08c11499e4b58498c820c18472f","cross_cats_sorted":["astro-ph.IM","cs.LG"],"license":"http://arxiv.org/licenses/nonexclusive-distrib/1.0/","primary_cat":"astro-ph.EP","submitted_at":"2026-06-10T07:15:25Z","title_canon_sha256":"7c78c3a15c15609d3eb57c80f9df0769ff779027bde3f0d07069893e2e6bc682"},"schema_version":"1.0","source":{"id":"2606.11737","kind":"arxiv","version":1}},"source_aliases":[{"alias_kind":"arxiv","alias_value":"2606.11737","created_at":"2026-06-11T01:10:05Z"},{"alias_kind":"arxiv_version","alias_value":"2606.11737v1","created_at":"2026-06-11T01:10:05Z"},{"alias_kind":"doi","alias_value":"10.48550/arxiv.2606.11737","created_at":"2026-06-11T01:10:05Z"},{"alias_kind":"pith_short_12","alias_value":"MLKZTV2Z3YPQ","created_at":"2026-06-11T01:10:05Z"},{"alias_kind":"pith_short_16","alias_value":"MLKZTV2Z3YPQIIPG","created_at":"2026-06-11T01:10:05Z"},{"alias_kind":"pith_short_8","alias_value":"MLKZTV2Z","created_at":"2026-06-11T01:10:05Z"}],"graph_snapshots":[{"event_id":"sha256:31dca2d47c6fbe3aa8be27c74de3679ec9c545619d8845679064f9fa96a6fb91","target":"graph","created_at":"2026-06-11T01:10:05Z","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"},"integrity":{"available":true,"clean":true,"detectors_run":[],"endpoint":"/pith/2606.11737/integrity.json","findings":[],"snapshot_sha256":"c28c3603d3b5d939e8dc4c7e95fa8dfce3d595e45f758748cecf8e644a296938","summary":{"advisory":0,"by_detector":{},"critical":0,"informational":0}},"paper":{"abstract_excerpt":"Close-in exoplanets exhibit a wide range of orbital architectures and physical properties shaped by both formation conditions and migration processes. Although population-synthesis models predict distinct planetary populations, establishing a quantitative connection between observed exoplanets and synthetic populations remains challenging. We investigate the intrinsic organisation of close-in exoplanets using physically motivated dynamical parameters and connect the resulting populations to pebble-accretion formation pathways. A two-stage Gaussian mixture model (GMM) is applied to an observed ","authors_text":"Anders Johansen, Haiyang S. Wang, H. Jens Hoeijmakers, Yi Duann","cross_cats":["astro-ph.IM","cs.LG"],"headline":"","license":"http://arxiv.org/licenses/nonexclusive-distrib/1.0/","primary_cat":"astro-ph.EP","submitted_at":"2026-06-10T07:15:25Z","title":"Machine-learning clustering of close-in exoplanet populations: links to pebble accretion"},"references":{"count":0,"internal_anchors":0,"resolved_work":0,"sample":[],"snapshot_sha256":"258153158e38e3291e3d48162225fcdb2d5a3ed65a07baac614ab91432fd4f57"},"source":{"id":"2606.11737","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":"sha256:637b92d5aa18837eaf5c162a0fc3f077285f19dae6a44b5dd0676711734469f8","target":"record","created_at":"2026-06-11T01:10:05Z","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":"bdd407931bfb72e5ea8dd937fa93a06e5cb7a08c11499e4b58498c820c18472f","cross_cats_sorted":["astro-ph.IM","cs.LG"],"license":"http://arxiv.org/licenses/nonexclusive-distrib/1.0/","primary_cat":"astro-ph.EP","submitted_at":"2026-06-10T07:15:25Z","title_canon_sha256":"7c78c3a15c15609d3eb57c80f9df0769ff779027bde3f0d07069893e2e6bc682"},"schema_version":"1.0","source":{"id":"2606.11737","kind":"arxiv","version":1}},"canonical_sha256":"62d599d759de1f0421e62cea89452957a6e186068c58404f474f1b324c7ea9d2","receipt":{"algorithm":"ed25519","builder_version":"pith-number-builder-2026-05-17-v1","canonical_sha256":"62d599d759de1f0421e62cea89452957a6e186068c58404f474f1b324c7ea9d2","first_computed_at":"2026-06-11T01:10:05.421147Z","key_id":"pith-v1-2026-05","kind":"pith_receipt","last_reissued_at":"2026-06-11T01:10:05.421147Z","public_key_fingerprint":"8d4b5ee74e4693bcd1df2446408b0d54","receipt_version":"0.3","signature_b64":"qO72EquvSus6NdCJ3ohnLI2Pt+ZkIuScV8p9l6+n9VaZNrIN3FtGWaQbUlFWqfBRKWQVBEczMGc2e+hqn2JjBQ==","signature_status":"signed_v1","signed_at":"2026-06-11T01:10:05.421908Z","signed_message":"canonical_sha256_bytes"},"source_id":"2606.11737","source_kind":"arxiv","source_version":1}}},"equivocations":[],"invalid_events":[],"applied_event_ids":["sha256:637b92d5aa18837eaf5c162a0fc3f077285f19dae6a44b5dd0676711734469f8","sha256:31dca2d47c6fbe3aa8be27c74de3679ec9c545619d8845679064f9fa96a6fb91"],"state_sha256":"bc7c4dd228b2734364b81cd68b3e23117db065848e899a197e950bc9671746a2"},"bundle_signature":{"signature_status":"signed_v1","algorithm":"ed25519","key_id":"pith-v1-2026-05","public_key_fingerprint":"8d4b5ee74e4693bcd1df2446408b0d54","signature_b64":"1jyuKKdvPlJmzkMhhTf16uzXHR9+hJEKGUNQZa6v+5NTXYRVNxtWr7sbpSQHBWovbdWfUIzPJgGLbwe3f/vvBQ==","signed_message":"bundle_sha256_bytes","signed_at":"2026-06-28T07:17:06.545425Z","bundle_sha256":"b73d3ba155c58bb17850dc3a8ba797b2e6a872c884366093d71feb5ca8ed6e39"}}