{"bundle_type":"pith_open_graph_bundle","bundle_version":"1.0","pith_number":"pith:2021:Y5TPYBIM5CUARW527ABWJCQIRY","short_pith_number":"pith:Y5TPYBIM","canonical_record":{"source":{"id":"2112.15413","kind":"arxiv","version":1},"metadata":{"license":"http://arxiv.org/licenses/nonexclusive-distrib/1.0/","primary_cat":"astro-ph.EP","submitted_at":"2021-12-31T12:45:31Z","cross_cats_sorted":[],"title_canon_sha256":"743adc02f62be02dcea99d7992024bd94467cd647b1437ef68532fc12a0cf55c","abstract_canon_sha256":"a50fc28b72ba7c31ff217c31dd92de82596f839db3fbfd5daea155a5afa979db"},"schema_version":"1.0"},"canonical_sha256":"c766fc050ce8a808dbbaf803648a088e34c3f0fb03e8d9a517d0376494f22a76","source":{"kind":"arxiv","id":"2112.15413","version":1},"source_aliases":[{"alias_kind":"arxiv","alias_value":"2112.15413","created_at":"2026-07-05T03:44:46Z"},{"alias_kind":"arxiv_version","alias_value":"2112.15413v1","created_at":"2026-07-05T03:44:46Z"},{"alias_kind":"doi","alias_value":"10.48550/arxiv.2112.15413","created_at":"2026-07-05T03:44:46Z"},{"alias_kind":"pith_short_12","alias_value":"Y5TPYBIM5CUA","created_at":"2026-07-05T03:44:46Z"},{"alias_kind":"pith_short_16","alias_value":"Y5TPYBIM5CUARW52","created_at":"2026-07-05T03:44:46Z"},{"alias_kind":"pith_short_8","alias_value":"Y5TPYBIM","created_at":"2026-07-05T03:44:46Z"}],"events":[{"event_type":"record_created","subject_pith_number":"pith:2021:Y5TPYBIM5CUARW527ABWJCQIRY","target":"record","payload":{"canonical_record":{"source":{"id":"2112.15413","kind":"arxiv","version":1},"metadata":{"license":"http://arxiv.org/licenses/nonexclusive-distrib/1.0/","primary_cat":"astro-ph.EP","submitted_at":"2021-12-31T12:45:31Z","cross_cats_sorted":[],"title_canon_sha256":"743adc02f62be02dcea99d7992024bd94467cd647b1437ef68532fc12a0cf55c","abstract_canon_sha256":"a50fc28b72ba7c31ff217c31dd92de82596f839db3fbfd5daea155a5afa979db"},"schema_version":"1.0"},"canonical_sha256":"c766fc050ce8a808dbbaf803648a088e34c3f0fb03e8d9a517d0376494f22a76","receipt":{"kind":"pith_receipt","key_id":"pith-v1-2026-05","algorithm":"ed25519","signed_at":"2026-07-05T03:44:46.029826Z","signature_b64":"9gHt50yPq9nkJF9ye7aLss64eLf0qgYngJtg8LPbMLVDriRJjG7az94y1FTKEn+3bRx8T+K4aSzOQsVULcT1Dw==","signed_message":"canonical_sha256_bytes","builder_version":"pith-number-builder-2026-05-17-v1","receipt_version":"0.3","canonical_sha256":"c766fc050ce8a808dbbaf803648a088e34c3f0fb03e8d9a517d0376494f22a76","last_reissued_at":"2026-07-05T03:44:46.029366Z","signature_status":"signed_v1","first_computed_at":"2026-07-05T03:44:46.029366Z","public_key_fingerprint":"8d4b5ee74e4693bcd1df2446408b0d54"},"source_kind":"arxiv","source_id":"2112.15413","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":"2026-07-05T03:44:46Z","supersedes":[],"prev_event":null,"signature":{"signature_status":"signed_v1","algorithm":"ed25519","key_id":"pith-v1-2026-05","public_key_fingerprint":"8d4b5ee74e4693bcd1df2446408b0d54","signature_b64":"RyM6btyJ07TgO/9pFzXD8102Vp0BByQrEZgiDPXuMnp0W5N9yjjF0GBLZq70DaqGc2T9F2YfLdKBsFJdwAVTDg==","signed_message":"open_graph_event_sha256_bytes","signed_at":"2026-08-04T23:32:38.539195Z"},"content_sha256":"191362204dcd8a5286620fdb919bc73e0f12c653fd02d26a3b13fc109f848a14","schema_version":"1.0","event_id":"sha256:191362204dcd8a5286620fdb919bc73e0f12c653fd02d26a3b13fc109f848a14"},{"event_type":"graph_snapshot","subject_pith_number":"pith:2021:Y5TPYBIM5CUARW527ABWJCQIRY","target":"graph","payload":{"graph_snapshot":{"paper":{"title":"Contemporary formation of early solar system planetesimals at two distinct radial locations","license":"http://arxiv.org/licenses/nonexclusive-distrib/1.0/","headline":"","cross_cats":[],"primary_cat":"astro-ph.EP","authors_text":"Alessandro Morbidelli, David C. Rubie, Kevin Baillie, Konstantin Batygin, Sebastien Charnoz, Thorsten Kleine, Tristan Guillot","submitted_at":"2021-12-31T12:45:31Z","abstract_excerpt":"The formation of planetesimals is expected to occur via particle-gas instabilities that concentrate dust into self-gravitating clumps. Triggering these instabilities requires the prior pileup of dust in the protoplanetary disk. Until now, this has been successfully modeled exclusively at the disk's snowline, whereas rocky planetesimals in the inner disk were obtained only by assuming either unrealistically large particle sizes or an enhanced global disk metallicity. However, planetesimal formation solely at the snowline is difficult to reconcile with the early and contemporaneous formation of "},"claims":{"count":0,"items":[],"snapshot_sha256":"258153158e38e3291e3d48162225fcdb2d5a3ed65a07baac614ab91432fd4f57"},"source":{"id":"2112.15413","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/2112.15413/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":"2026-07-05T03:44:46Z","supersedes":[],"prev_event":null,"signature":{"signature_status":"signed_v1","algorithm":"ed25519","key_id":"pith-v1-2026-05","public_key_fingerprint":"8d4b5ee74e4693bcd1df2446408b0d54","signature_b64":"f5Hwi2oNjEz9WTXJJXMcDX/9CW+s4sm4CTQ8ckpwgVYIG9amZlkaeLhTwCoyEtCIrVlh33itHIPCRgbOp/eIAg==","signed_message":"open_graph_event_sha256_bytes","signed_at":"2026-08-04T23:32:38.543195Z"},"content_sha256":"e9423dc8e6ce30c2aed2f523626cffa08c62c55765a732bf15439f8c1f65936e","schema_version":"1.0","event_id":"sha256:e9423dc8e6ce30c2aed2f523626cffa08c62c55765a732bf15439f8c1f65936e"}],"timestamp_proofs":[],"mirror_hints":[{"mirror_type":"https","name":"Pith Resolver","base_url":"https://pith.science","bundle_url":"https://pith.science/pith/Y5TPYBIM5CUARW527ABWJCQIRY/bundle.json","state_url":"https://pith.science/pith/Y5TPYBIM5CUARW527ABWJCQIRY/state.json","well_known_bundle_url":"https://pith.science/.well-known/pith/Y5TPYBIM5CUARW527ABWJCQIRY/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":"2026-08-04T23:32:38Z","links":{"resolver":"https://pith.science/pith/Y5TPYBIM5CUARW527ABWJCQIRY","bundle":"https://pith.science/pith/Y5TPYBIM5CUARW527ABWJCQIRY/bundle.json","state":"https://pith.science/pith/Y5TPYBIM5CUARW527ABWJCQIRY/state.json","well_known_bundle":"https://pith.science/.well-known/pith/Y5TPYBIM5CUARW527ABWJCQIRY/bundle.json"},"state":{"state_type":"pith_open_graph_state","state_version":"1.0","pith_number":"pith:2021:Y5TPYBIM5CUARW527ABWJCQIRY","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":"a50fc28b72ba7c31ff217c31dd92de82596f839db3fbfd5daea155a5afa979db","cross_cats_sorted":[],"license":"http://arxiv.org/licenses/nonexclusive-distrib/1.0/","primary_cat":"astro-ph.EP","submitted_at":"2021-12-31T12:45:31Z","title_canon_sha256":"743adc02f62be02dcea99d7992024bd94467cd647b1437ef68532fc12a0cf55c"},"schema_version":"1.0","source":{"id":"2112.15413","kind":"arxiv","version":1}},"source_aliases":[{"alias_kind":"arxiv","alias_value":"2112.15413","created_at":"2026-07-05T03:44:46Z"},{"alias_kind":"arxiv_version","alias_value":"2112.15413v1","created_at":"2026-07-05T03:44:46Z"},{"alias_kind":"doi","alias_value":"10.48550/arxiv.2112.15413","created_at":"2026-07-05T03:44:46Z"},{"alias_kind":"pith_short_12","alias_value":"Y5TPYBIM5CUA","created_at":"2026-07-05T03:44:46Z"},{"alias_kind":"pith_short_16","alias_value":"Y5TPYBIM5CUARW52","created_at":"2026-07-05T03:44:46Z"},{"alias_kind":"pith_short_8","alias_value":"Y5TPYBIM","created_at":"2026-07-05T03:44:46Z"}],"graph_snapshots":[{"event_id":"sha256:e9423dc8e6ce30c2aed2f523626cffa08c62c55765a732bf15439f8c1f65936e","target":"graph","created_at":"2026-07-05T03:44:46Z","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/2112.15413/integrity.json","findings":[],"snapshot_sha256":"c28c3603d3b5d939e8dc4c7e95fa8dfce3d595e45f758748cecf8e644a296938","summary":{"advisory":0,"by_detector":{},"critical":0,"informational":0}},"paper":{"abstract_excerpt":"The formation of planetesimals is expected to occur via particle-gas instabilities that concentrate dust into self-gravitating clumps. Triggering these instabilities requires the prior pileup of dust in the protoplanetary disk. Until now, this has been successfully modeled exclusively at the disk's snowline, whereas rocky planetesimals in the inner disk were obtained only by assuming either unrealistically large particle sizes or an enhanced global disk metallicity. However, planetesimal formation solely at the snowline is difficult to reconcile with the early and contemporaneous formation of ","authors_text":"Alessandro Morbidelli, David C. Rubie, Kevin Baillie, Konstantin Batygin, Sebastien Charnoz, Thorsten Kleine, Tristan Guillot","cross_cats":[],"headline":"","license":"http://arxiv.org/licenses/nonexclusive-distrib/1.0/","primary_cat":"astro-ph.EP","submitted_at":"2021-12-31T12:45:31Z","title":"Contemporary formation of early solar system planetesimals at two distinct radial locations"},"references":{"count":0,"internal_anchors":0,"resolved_work":0,"sample":[],"snapshot_sha256":"258153158e38e3291e3d48162225fcdb2d5a3ed65a07baac614ab91432fd4f57"},"source":{"id":"2112.15413","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":"sha256:191362204dcd8a5286620fdb919bc73e0f12c653fd02d26a3b13fc109f848a14","target":"record","created_at":"2026-07-05T03:44:46Z","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":"a50fc28b72ba7c31ff217c31dd92de82596f839db3fbfd5daea155a5afa979db","cross_cats_sorted":[],"license":"http://arxiv.org/licenses/nonexclusive-distrib/1.0/","primary_cat":"astro-ph.EP","submitted_at":"2021-12-31T12:45:31Z","title_canon_sha256":"743adc02f62be02dcea99d7992024bd94467cd647b1437ef68532fc12a0cf55c"},"schema_version":"1.0","source":{"id":"2112.15413","kind":"arxiv","version":1}},"canonical_sha256":"c766fc050ce8a808dbbaf803648a088e34c3f0fb03e8d9a517d0376494f22a76","receipt":{"algorithm":"ed25519","builder_version":"pith-number-builder-2026-05-17-v1","canonical_sha256":"c766fc050ce8a808dbbaf803648a088e34c3f0fb03e8d9a517d0376494f22a76","first_computed_at":"2026-07-05T03:44:46.029366Z","key_id":"pith-v1-2026-05","kind":"pith_receipt","last_reissued_at":"2026-07-05T03:44:46.029366Z","public_key_fingerprint":"8d4b5ee74e4693bcd1df2446408b0d54","receipt_version":"0.3","signature_b64":"9gHt50yPq9nkJF9ye7aLss64eLf0qgYngJtg8LPbMLVDriRJjG7az94y1FTKEn+3bRx8T+K4aSzOQsVULcT1Dw==","signature_status":"signed_v1","signed_at":"2026-07-05T03:44:46.029826Z","signed_message":"canonical_sha256_bytes"},"source_id":"2112.15413","source_kind":"arxiv","source_version":1}}},"equivocations":[],"invalid_events":[],"applied_event_ids":["sha256:191362204dcd8a5286620fdb919bc73e0f12c653fd02d26a3b13fc109f848a14","sha256:e9423dc8e6ce30c2aed2f523626cffa08c62c55765a732bf15439f8c1f65936e"],"state_sha256":"81854ed5985fe1d793a6d71571b431500c7edcd75c345652479b39ce2ac8b2c8"},"bundle_signature":{"signature_status":"signed_v1","algorithm":"ed25519","key_id":"pith-v1-2026-05","public_key_fingerprint":"8d4b5ee74e4693bcd1df2446408b0d54","signature_b64":"WFHGcdx60JcZlSAfCBrTLcdvEOS6H+FOia1ox9bPvf+hW8Tu+O6l3O275VURfukGluJkrrpUjaANqIoy7XHUBw==","signed_message":"bundle_sha256_bytes","signed_at":"2026-08-04T23:32:38.549638Z","bundle_sha256":"d9cdfacf92b175904b01a10c2409cdcf6752ae83bc6899ffcb164214445c125b"}}