{"bundle_type":"pith_open_graph_bundle","bundle_version":"1.0","pith_number":"pith:2013:P6GSHZMV24S3NZDMISUORIVHPY","short_pith_number":"pith:P6GSHZMV","canonical_record":{"source":{"id":"1301.7433","kind":"arxiv","version":2},"metadata":{"license":"http://arxiv.org/licenses/nonexclusive-distrib/1.0/","primary_cat":"astro-ph.EP","submitted_at":"2013-01-30T21:07:59Z","cross_cats_sorted":[],"title_canon_sha256":"394d7b2cff540826a5c050fdab62eb111aba97def62a35cc1a63f6da3aa942be","abstract_canon_sha256":"b8386c85ef17a46f3a7e975123e2e1ab64968095ed190385bb1b271dd38aaa3f"},"schema_version":"1.0"},"canonical_sha256":"7f8d23e595d725b6e46c44a8e8a2a77e3d918e14fa4a10d47e1461100a8ac8dc","source":{"kind":"arxiv","id":"1301.7433","version":2},"source_aliases":[{"alias_kind":"arxiv","alias_value":"1301.7433","created_at":"2026-05-18T01:51:56Z"},{"alias_kind":"arxiv_version","alias_value":"1301.7433v2","created_at":"2026-05-18T01:51:56Z"},{"alias_kind":"doi","alias_value":"10.48550/arxiv.1301.7433","created_at":"2026-05-18T01:51:56Z"},{"alias_kind":"pith_short_12","alias_value":"P6GSHZMV24S3","created_at":"2026-05-18T12:27:54Z"},{"alias_kind":"pith_short_16","alias_value":"P6GSHZMV24S3NZDM","created_at":"2026-05-18T12:27:54Z"},{"alias_kind":"pith_short_8","alias_value":"P6GSHZMV","created_at":"2026-05-18T12:27:54Z"}],"events":[{"event_type":"record_created","subject_pith_number":"pith:2013:P6GSHZMV24S3NZDMISUORIVHPY","target":"record","payload":{"canonical_record":{"source":{"id":"1301.7433","kind":"arxiv","version":2},"metadata":{"license":"http://arxiv.org/licenses/nonexclusive-distrib/1.0/","primary_cat":"astro-ph.EP","submitted_at":"2013-01-30T21:07:59Z","cross_cats_sorted":[],"title_canon_sha256":"394d7b2cff540826a5c050fdab62eb111aba97def62a35cc1a63f6da3aa942be","abstract_canon_sha256":"b8386c85ef17a46f3a7e975123e2e1ab64968095ed190385bb1b271dd38aaa3f"},"schema_version":"1.0"},"canonical_sha256":"7f8d23e595d725b6e46c44a8e8a2a77e3d918e14fa4a10d47e1461100a8ac8dc","receipt":{"kind":"pith_receipt","key_id":"pith-v1-2026-05","algorithm":"ed25519","signed_at":"2026-05-18T01:51:56.903114Z","signature_b64":"5I0q8Y7V65U9fiPsaRSgo6j2KDTZ3OAYD8p6KlKsazF/T0OTk40dEZzwimYyFQKwEVE6bZnjK0Z9TMnTuUBuBw==","signed_message":"canonical_sha256_bytes","builder_version":"pith-number-builder-2026-05-17-v1","receipt_version":"0.3","canonical_sha256":"7f8d23e595d725b6e46c44a8e8a2a77e3d918e14fa4a10d47e1461100a8ac8dc","last_reissued_at":"2026-05-18T01:51:56.902711Z","signature_status":"signed_v1","first_computed_at":"2026-05-18T01:51:56.902711Z","public_key_fingerprint":"8d4b5ee74e4693bcd1df2446408b0d54"},"source_kind":"arxiv","source_id":"1301.7433","source_version":2,"attestation_state":"computed"},"signer":{"signer_id":"pith.science","signer_type":"pith_registry","key_id":"pith-v1-2026-05","public_key_fingerprint":"8d4b5ee74e4693bcd1df2446408b0d54"},"created_at":"2026-05-18T01:51:56Z","supersedes":[],"prev_event":null,"signature":{"signature_status":"signed_v1","algorithm":"ed25519","key_id":"pith-v1-2026-05","public_key_fingerprint":"8d4b5ee74e4693bcd1df2446408b0d54","signature_b64":"3ijg+binHJURWEljbRz5n7zs7o9ex2EWa1erOvsLHRhInY58nqgR5DXIDL3PzqhUiZTdncORSAmfko3CIXIQBw==","signed_message":"open_graph_event_sha256_bytes","signed_at":"2026-05-25T13:23:02.380526Z"},"content_sha256":"5f2e910f3196df5cf9d9c9b390f784060af2894a3dacaba39c3a5d8354281712","schema_version":"1.0","event_id":"sha256:5f2e910f3196df5cf9d9c9b390f784060af2894a3dacaba39c3a5d8354281712"},{"event_type":"graph_snapshot","subject_pith_number":"pith:2013:P6GSHZMV24S3NZDMISUORIVHPY","target":"graph","payload":{"graph_snapshot":{"paper":{"title":"Initial Planetesimal Sizes and the Size Distribution of Small Kuiper Belt Objects","license":"http://arxiv.org/licenses/nonexclusive-distrib/1.0/","headline":"","cross_cats":[],"primary_cat":"astro-ph.EP","authors_text":"Cesar I. Fuentes, David E. Trilling, Hilke E. Schlichting","submitted_at":"2013-01-30T21:07:59Z","abstract_excerpt":"We show, by comparing observations with theoretical models, that the observed Kuiper Belt size distribution is well matched by coagulation models, which start from an initial planetesimal population with radii of about 1km, and subsequent collisional evolution. We find that the observed size distribution for R > 30km has not been modified by collisional evolution over the age of the solar system, and that the size distribution below R ~ 30km has been modified by collisions and that its slope is well matched by collisional evolution models that use published strength laws. We investigate in det"},"claims":{"count":0,"items":[],"snapshot_sha256":"258153158e38e3291e3d48162225fcdb2d5a3ed65a07baac614ab91432fd4f57"},"source":{"id":"1301.7433","kind":"arxiv","version":2},"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":"2026-05-18T01:51:56Z","supersedes":[],"prev_event":null,"signature":{"signature_status":"signed_v1","algorithm":"ed25519","key_id":"pith-v1-2026-05","public_key_fingerprint":"8d4b5ee74e4693bcd1df2446408b0d54","signature_b64":"o048atE0NlGWExjT+fP5QJWIeYGzGaDwxVyx5JAZNxaoM7TjvWVbW7v4lkRutrlKvHxwNl0VTJ5w0Ih1yig3CA==","signed_message":"open_graph_event_sha256_bytes","signed_at":"2026-05-25T13:23:02.381202Z"},"content_sha256":"0e759e905d91a89cfae6b6701040751064f775ca4d294adafa14785aec3748b9","schema_version":"1.0","event_id":"sha256:0e759e905d91a89cfae6b6701040751064f775ca4d294adafa14785aec3748b9"}],"timestamp_proofs":[],"mirror_hints":[{"mirror_type":"https","name":"Pith Resolver","base_url":"https://pith.science","bundle_url":"https://pith.science/pith/P6GSHZMV24S3NZDMISUORIVHPY/bundle.json","state_url":"https://pith.science/pith/P6GSHZMV24S3NZDMISUORIVHPY/state.json","well_known_bundle_url":"https://pith.science/.well-known/pith/P6GSHZMV24S3NZDMISUORIVHPY/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":"2026-05-25T13:23:02Z","links":{"resolver":"https://pith.science/pith/P6GSHZMV24S3NZDMISUORIVHPY","bundle":"https://pith.science/pith/P6GSHZMV24S3NZDMISUORIVHPY/bundle.json","state":"https://pith.science/pith/P6GSHZMV24S3NZDMISUORIVHPY/state.json","well_known_bundle":"https://pith.science/.well-known/pith/P6GSHZMV24S3NZDMISUORIVHPY/bundle.json"},"state":{"state_type":"pith_open_graph_state","state_version":"1.0","pith_number":"pith:2013:P6GSHZMV24S3NZDMISUORIVHPY","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":"b8386c85ef17a46f3a7e975123e2e1ab64968095ed190385bb1b271dd38aaa3f","cross_cats_sorted":[],"license":"http://arxiv.org/licenses/nonexclusive-distrib/1.0/","primary_cat":"astro-ph.EP","submitted_at":"2013-01-30T21:07:59Z","title_canon_sha256":"394d7b2cff540826a5c050fdab62eb111aba97def62a35cc1a63f6da3aa942be"},"schema_version":"1.0","source":{"id":"1301.7433","kind":"arxiv","version":2}},"source_aliases":[{"alias_kind":"arxiv","alias_value":"1301.7433","created_at":"2026-05-18T01:51:56Z"},{"alias_kind":"arxiv_version","alias_value":"1301.7433v2","created_at":"2026-05-18T01:51:56Z"},{"alias_kind":"doi","alias_value":"10.48550/arxiv.1301.7433","created_at":"2026-05-18T01:51:56Z"},{"alias_kind":"pith_short_12","alias_value":"P6GSHZMV24S3","created_at":"2026-05-18T12:27:54Z"},{"alias_kind":"pith_short_16","alias_value":"P6GSHZMV24S3NZDM","created_at":"2026-05-18T12:27:54Z"},{"alias_kind":"pith_short_8","alias_value":"P6GSHZMV","created_at":"2026-05-18T12:27:54Z"}],"graph_snapshots":[{"event_id":"sha256:0e759e905d91a89cfae6b6701040751064f775ca4d294adafa14785aec3748b9","target":"graph","created_at":"2026-05-18T01:51:56Z","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 show, by comparing observations with theoretical models, that the observed Kuiper Belt size distribution is well matched by coagulation models, which start from an initial planetesimal population with radii of about 1km, and subsequent collisional evolution. We find that the observed size distribution for R > 30km has not been modified by collisional evolution over the age of the solar system, and that the size distribution below R ~ 30km has been modified by collisions and that its slope is well matched by collisional evolution models that use published strength laws. We investigate in det","authors_text":"Cesar I. Fuentes, David E. Trilling, Hilke E. Schlichting","cross_cats":[],"headline":"","license":"http://arxiv.org/licenses/nonexclusive-distrib/1.0/","primary_cat":"astro-ph.EP","submitted_at":"2013-01-30T21:07:59Z","title":"Initial Planetesimal Sizes and the Size Distribution of Small Kuiper Belt Objects"},"references":{"count":0,"internal_anchors":0,"resolved_work":0,"sample":[],"snapshot_sha256":"258153158e38e3291e3d48162225fcdb2d5a3ed65a07baac614ab91432fd4f57"},"source":{"id":"1301.7433","kind":"arxiv","version":2},"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":"sha256:5f2e910f3196df5cf9d9c9b390f784060af2894a3dacaba39c3a5d8354281712","target":"record","created_at":"2026-05-18T01:51:56Z","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":"b8386c85ef17a46f3a7e975123e2e1ab64968095ed190385bb1b271dd38aaa3f","cross_cats_sorted":[],"license":"http://arxiv.org/licenses/nonexclusive-distrib/1.0/","primary_cat":"astro-ph.EP","submitted_at":"2013-01-30T21:07:59Z","title_canon_sha256":"394d7b2cff540826a5c050fdab62eb111aba97def62a35cc1a63f6da3aa942be"},"schema_version":"1.0","source":{"id":"1301.7433","kind":"arxiv","version":2}},"canonical_sha256":"7f8d23e595d725b6e46c44a8e8a2a77e3d918e14fa4a10d47e1461100a8ac8dc","receipt":{"algorithm":"ed25519","builder_version":"pith-number-builder-2026-05-17-v1","canonical_sha256":"7f8d23e595d725b6e46c44a8e8a2a77e3d918e14fa4a10d47e1461100a8ac8dc","first_computed_at":"2026-05-18T01:51:56.902711Z","key_id":"pith-v1-2026-05","kind":"pith_receipt","last_reissued_at":"2026-05-18T01:51:56.902711Z","public_key_fingerprint":"8d4b5ee74e4693bcd1df2446408b0d54","receipt_version":"0.3","signature_b64":"5I0q8Y7V65U9fiPsaRSgo6j2KDTZ3OAYD8p6KlKsazF/T0OTk40dEZzwimYyFQKwEVE6bZnjK0Z9TMnTuUBuBw==","signature_status":"signed_v1","signed_at":"2026-05-18T01:51:56.903114Z","signed_message":"canonical_sha256_bytes"},"source_id":"1301.7433","source_kind":"arxiv","source_version":2}}},"equivocations":[],"invalid_events":[],"applied_event_ids":["sha256:5f2e910f3196df5cf9d9c9b390f784060af2894a3dacaba39c3a5d8354281712","sha256:0e759e905d91a89cfae6b6701040751064f775ca4d294adafa14785aec3748b9"],"state_sha256":"03e76624e46b901558679d2e056797fe488e08e6d89bf224e7090cd59bb307d7"},"bundle_signature":{"signature_status":"signed_v1","algorithm":"ed25519","key_id":"pith-v1-2026-05","public_key_fingerprint":"8d4b5ee74e4693bcd1df2446408b0d54","signature_b64":"VLvF/eoclKo+89qgUwfE3rcatuvry3irt2QZftp8nk5EvCIfzK5TUbsCK97cAESW0eNIy0rwTLE5kLimoWxrDA==","signed_message":"bundle_sha256_bytes","signed_at":"2026-05-25T13:23:02.384669Z","bundle_sha256":"86e049a8b0ada8defd54769e928c7306aca1c88c9374b8514166eb144068e803"}}