{"bundle_type":"pith_open_graph_bundle","bundle_version":"1.0","pith_number":"pith:2012:IUPMQDEMLK7RMYZWWEMLBIX6VT","short_pith_number":"pith:IUPMQDEM","canonical_record":{"source":{"id":"1210.6268","kind":"arxiv","version":1},"metadata":{"license":"http://arxiv.org/licenses/nonexclusive-distrib/1.0/","primary_cat":"astro-ph.SR","submitted_at":"2012-10-23T15:32:45Z","cross_cats_sorted":["astro-ph.EP"],"title_canon_sha256":"42b5c2e895f5ecc51487c73a7899b81d79e199cece9fe3f93c9cc66001b804bb","abstract_canon_sha256":"19f286f067e63ba155671d6a0b2e7901703fc69e12ecde47353a4077627b0984"},"schema_version":"1.0"},"canonical_sha256":"451ec80c8c5abf166336b118b0a2feacc4a23456fa719ce46cd22c4ea90c07be","source":{"kind":"arxiv","id":"1210.6268","version":1},"source_aliases":[{"alias_kind":"arxiv","alias_value":"1210.6268","created_at":"2026-05-18T01:53:44Z"},{"alias_kind":"arxiv_version","alias_value":"1210.6268v1","created_at":"2026-05-18T01:53:44Z"},{"alias_kind":"doi","alias_value":"10.48550/arxiv.1210.6268","created_at":"2026-05-18T01:53:44Z"},{"alias_kind":"pith_short_12","alias_value":"IUPMQDEMLK7R","created_at":"2026-05-18T12:27:09Z"},{"alias_kind":"pith_short_16","alias_value":"IUPMQDEMLK7RMYZW","created_at":"2026-05-18T12:27:09Z"},{"alias_kind":"pith_short_8","alias_value":"IUPMQDEM","created_at":"2026-05-18T12:27:09Z"}],"events":[{"event_type":"record_created","subject_pith_number":"pith:2012:IUPMQDEMLK7RMYZWWEMLBIX6VT","target":"record","payload":{"canonical_record":{"source":{"id":"1210.6268","kind":"arxiv","version":1},"metadata":{"license":"http://arxiv.org/licenses/nonexclusive-distrib/1.0/","primary_cat":"astro-ph.SR","submitted_at":"2012-10-23T15:32:45Z","cross_cats_sorted":["astro-ph.EP"],"title_canon_sha256":"42b5c2e895f5ecc51487c73a7899b81d79e199cece9fe3f93c9cc66001b804bb","abstract_canon_sha256":"19f286f067e63ba155671d6a0b2e7901703fc69e12ecde47353a4077627b0984"},"schema_version":"1.0"},"canonical_sha256":"451ec80c8c5abf166336b118b0a2feacc4a23456fa719ce46cd22c4ea90c07be","receipt":{"kind":"pith_receipt","key_id":"pith-v1-2026-05","algorithm":"ed25519","signed_at":"2026-05-18T01:53:44.258832Z","signature_b64":"zTwPDJGv7rsLE8wb39j+jzjukCCa5BeGfdOlYlUvQm3Ta/LGEZ6bcPu9U1YMI8gr8iYQIKU5wU+9QY+tvZ9UCw==","signed_message":"canonical_sha256_bytes","builder_version":"pith-number-builder-2026-05-17-v1","receipt_version":"0.3","canonical_sha256":"451ec80c8c5abf166336b118b0a2feacc4a23456fa719ce46cd22c4ea90c07be","last_reissued_at":"2026-05-18T01:53:44.258138Z","signature_status":"signed_v1","first_computed_at":"2026-05-18T01:53:44.258138Z","public_key_fingerprint":"8d4b5ee74e4693bcd1df2446408b0d54"},"source_kind":"arxiv","source_id":"1210.6268","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":"2026-05-18T01:53:44Z","supersedes":[],"prev_event":null,"signature":{"signature_status":"signed_v1","algorithm":"ed25519","key_id":"pith-v1-2026-05","public_key_fingerprint":"8d4b5ee74e4693bcd1df2446408b0d54","signature_b64":"k27TjgiqysQrDYihCVecWqUBQGc7Ektb2cAya01d8mS/4MZ7iGELmMT2I61aFehRwOTM3iiZr6jPC7GBvz3yCA==","signed_message":"open_graph_event_sha256_bytes","signed_at":"2026-07-04T13:09:40.836103Z"},"content_sha256":"b4de2c5ee3078168f527288727bcbd14c429e92725a05502c0d3cad0e51adb0a","schema_version":"1.0","event_id":"sha256:b4de2c5ee3078168f527288727bcbd14c429e92725a05502c0d3cad0e51adb0a"},{"event_type":"graph_snapshot","subject_pith_number":"pith:2012:IUPMQDEMLK7RMYZWWEMLBIX6VT","target":"graph","payload":{"graph_snapshot":{"paper":{"title":"Disc Clearing of Young Stellar Objects: Evidence for Fast Inside-out Dispersal","license":"http://arxiv.org/licenses/nonexclusive-distrib/1.0/","headline":"","cross_cats":["astro-ph.EP"],"primary_cat":"astro-ph.SR","authors_text":"B. Ercolano, C. M. Koepferl, J. Dale, L. Spezzi, P. S. Teixeira, T. Ratzka","submitted_at":"2012-10-23T15:32:45Z","abstract_excerpt":"The time-scale over which and the modality by which young stellar objects (YSOs) disperse their circumstellar discs dramatically influences the eventual formation and evolution of planetary systems. By means of extensive radiative transfer (RT) modelling, we have developed a new set of diagnostic diagrams in the infrared colour-colour plane (K-[24] vs. K-[8]), to aid with the classification of the evolutionary stage of YSOs from photometric observations. Our diagrams allow the differentiation of sources with unevolved (primordial) discs from those evolving according to different clearing scena"},"claims":{"count":0,"items":[],"snapshot_sha256":"258153158e38e3291e3d48162225fcdb2d5a3ed65a07baac614ab91432fd4f57"},"source":{"id":"1210.6268","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":"2026-05-18T01:53:44Z","supersedes":[],"prev_event":null,"signature":{"signature_status":"signed_v1","algorithm":"ed25519","key_id":"pith-v1-2026-05","public_key_fingerprint":"8d4b5ee74e4693bcd1df2446408b0d54","signature_b64":"dlJhtYyfAlkwIG0RXzHFjMmNf0U2oHyerxrwoRuybczEplz32ok1FE9I1kF5kZcRlRY77hio/lFkgv+pigl8Aw==","signed_message":"open_graph_event_sha256_bytes","signed_at":"2026-07-04T13:09:40.836481Z"},"content_sha256":"47ab0306496e8d4deeaac4932d2623d3b70b311c547b80beba1708a8327fe73d","schema_version":"1.0","event_id":"sha256:47ab0306496e8d4deeaac4932d2623d3b70b311c547b80beba1708a8327fe73d"}],"timestamp_proofs":[],"mirror_hints":[{"mirror_type":"https","name":"Pith Resolver","base_url":"https://pith.science","bundle_url":"https://pith.science/pith/IUPMQDEMLK7RMYZWWEMLBIX6VT/bundle.json","state_url":"https://pith.science/pith/IUPMQDEMLK7RMYZWWEMLBIX6VT/state.json","well_known_bundle_url":"https://pith.science/.well-known/pith/IUPMQDEMLK7RMYZWWEMLBIX6VT/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":"2026-07-04T13:09:40Z","links":{"resolver":"https://pith.science/pith/IUPMQDEMLK7RMYZWWEMLBIX6VT","bundle":"https://pith.science/pith/IUPMQDEMLK7RMYZWWEMLBIX6VT/bundle.json","state":"https://pith.science/pith/IUPMQDEMLK7RMYZWWEMLBIX6VT/state.json","well_known_bundle":"https://pith.science/.well-known/pith/IUPMQDEMLK7RMYZWWEMLBIX6VT/bundle.json"},"state":{"state_type":"pith_open_graph_state","state_version":"1.0","pith_number":"pith:2012:IUPMQDEMLK7RMYZWWEMLBIX6VT","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":"19f286f067e63ba155671d6a0b2e7901703fc69e12ecde47353a4077627b0984","cross_cats_sorted":["astro-ph.EP"],"license":"http://arxiv.org/licenses/nonexclusive-distrib/1.0/","primary_cat":"astro-ph.SR","submitted_at":"2012-10-23T15:32:45Z","title_canon_sha256":"42b5c2e895f5ecc51487c73a7899b81d79e199cece9fe3f93c9cc66001b804bb"},"schema_version":"1.0","source":{"id":"1210.6268","kind":"arxiv","version":1}},"source_aliases":[{"alias_kind":"arxiv","alias_value":"1210.6268","created_at":"2026-05-18T01:53:44Z"},{"alias_kind":"arxiv_version","alias_value":"1210.6268v1","created_at":"2026-05-18T01:53:44Z"},{"alias_kind":"doi","alias_value":"10.48550/arxiv.1210.6268","created_at":"2026-05-18T01:53:44Z"},{"alias_kind":"pith_short_12","alias_value":"IUPMQDEMLK7R","created_at":"2026-05-18T12:27:09Z"},{"alias_kind":"pith_short_16","alias_value":"IUPMQDEMLK7RMYZW","created_at":"2026-05-18T12:27:09Z"},{"alias_kind":"pith_short_8","alias_value":"IUPMQDEM","created_at":"2026-05-18T12:27:09Z"}],"graph_snapshots":[{"event_id":"sha256:47ab0306496e8d4deeaac4932d2623d3b70b311c547b80beba1708a8327fe73d","target":"graph","created_at":"2026-05-18T01:53:44Z","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":"The time-scale over which and the modality by which young stellar objects (YSOs) disperse their circumstellar discs dramatically influences the eventual formation and evolution of planetary systems. By means of extensive radiative transfer (RT) modelling, we have developed a new set of diagnostic diagrams in the infrared colour-colour plane (K-[24] vs. K-[8]), to aid with the classification of the evolutionary stage of YSOs from photometric observations. Our diagrams allow the differentiation of sources with unevolved (primordial) discs from those evolving according to different clearing scena","authors_text":"B. Ercolano, C. M. Koepferl, J. Dale, L. Spezzi, P. S. Teixeira, T. Ratzka","cross_cats":["astro-ph.EP"],"headline":"","license":"http://arxiv.org/licenses/nonexclusive-distrib/1.0/","primary_cat":"astro-ph.SR","submitted_at":"2012-10-23T15:32:45Z","title":"Disc Clearing of Young Stellar Objects: Evidence for Fast Inside-out Dispersal"},"references":{"count":0,"internal_anchors":0,"resolved_work":0,"sample":[],"snapshot_sha256":"258153158e38e3291e3d48162225fcdb2d5a3ed65a07baac614ab91432fd4f57"},"source":{"id":"1210.6268","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:b4de2c5ee3078168f527288727bcbd14c429e92725a05502c0d3cad0e51adb0a","target":"record","created_at":"2026-05-18T01:53:44Z","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":"19f286f067e63ba155671d6a0b2e7901703fc69e12ecde47353a4077627b0984","cross_cats_sorted":["astro-ph.EP"],"license":"http://arxiv.org/licenses/nonexclusive-distrib/1.0/","primary_cat":"astro-ph.SR","submitted_at":"2012-10-23T15:32:45Z","title_canon_sha256":"42b5c2e895f5ecc51487c73a7899b81d79e199cece9fe3f93c9cc66001b804bb"},"schema_version":"1.0","source":{"id":"1210.6268","kind":"arxiv","version":1}},"canonical_sha256":"451ec80c8c5abf166336b118b0a2feacc4a23456fa719ce46cd22c4ea90c07be","receipt":{"algorithm":"ed25519","builder_version":"pith-number-builder-2026-05-17-v1","canonical_sha256":"451ec80c8c5abf166336b118b0a2feacc4a23456fa719ce46cd22c4ea90c07be","first_computed_at":"2026-05-18T01:53:44.258138Z","key_id":"pith-v1-2026-05","kind":"pith_receipt","last_reissued_at":"2026-05-18T01:53:44.258138Z","public_key_fingerprint":"8d4b5ee74e4693bcd1df2446408b0d54","receipt_version":"0.3","signature_b64":"zTwPDJGv7rsLE8wb39j+jzjukCCa5BeGfdOlYlUvQm3Ta/LGEZ6bcPu9U1YMI8gr8iYQIKU5wU+9QY+tvZ9UCw==","signature_status":"signed_v1","signed_at":"2026-05-18T01:53:44.258832Z","signed_message":"canonical_sha256_bytes"},"source_id":"1210.6268","source_kind":"arxiv","source_version":1}}},"equivocations":[],"invalid_events":[],"applied_event_ids":["sha256:b4de2c5ee3078168f527288727bcbd14c429e92725a05502c0d3cad0e51adb0a","sha256:47ab0306496e8d4deeaac4932d2623d3b70b311c547b80beba1708a8327fe73d"],"state_sha256":"17aa161768be4835be811bfa3719baf7e88e764f41ac9004fd741e04ae1edc92"},"bundle_signature":{"signature_status":"signed_v1","algorithm":"ed25519","key_id":"pith-v1-2026-05","public_key_fingerprint":"8d4b5ee74e4693bcd1df2446408b0d54","signature_b64":"o4t+OQx7ykHpOAVDncATj3eg9tSDfu4v8GvrGcKGhMiycMxOj6TuVC/Lozu/Ol0XIjFlRFMsOo32QV6B5PB8BQ==","signed_message":"bundle_sha256_bytes","signed_at":"2026-07-04T13:09:40.838517Z","bundle_sha256":"8ecfa8c3f4407d3d86ce278536b49cc96f671fc785fb7a9b281b35e7a485c26b"}}