{"bundle_type":"pith_open_graph_bundle","bundle_version":"1.0","pith_number":"pith:2015:CM5SV4W3ZXMAAJXIBA7KEZ3H6Z","short_pith_number":"pith:CM5SV4W3","canonical_record":{"source":{"id":"1502.07204","kind":"arxiv","version":2},"metadata":{"license":"http://arxiv.org/licenses/nonexclusive-distrib/1.0/","primary_cat":"astro-ph.IM","submitted_at":"2015-02-25T15:38:36Z","cross_cats_sorted":["astro-ph.HE"],"title_canon_sha256":"0e9cbd397ffbadb0f108a132ba05036f416ea36cb7e2740e973e075c48347474","abstract_canon_sha256":"bf9da4174e8ff78f2e887b2c1048dcf9db26ba73ae39e0a01f2f1315528cec15"},"schema_version":"1.0"},"canonical_sha256":"133b2af2dbcdd80026e8083ea26767f6495d1b827e357bba2a003f6a3c1ef9d0","source":{"kind":"arxiv","id":"1502.07204","version":2},"source_aliases":[{"alias_kind":"arxiv","alias_value":"1502.07204","created_at":"2026-05-18T02:17:42Z"},{"alias_kind":"arxiv_version","alias_value":"1502.07204v2","created_at":"2026-05-18T02:17:42Z"},{"alias_kind":"doi","alias_value":"10.48550/arxiv.1502.07204","created_at":"2026-05-18T02:17:42Z"},{"alias_kind":"pith_short_12","alias_value":"CM5SV4W3ZXMA","created_at":"2026-05-18T12:29:17Z"},{"alias_kind":"pith_short_16","alias_value":"CM5SV4W3ZXMAAJXI","created_at":"2026-05-18T12:29:17Z"},{"alias_kind":"pith_short_8","alias_value":"CM5SV4W3","created_at":"2026-05-18T12:29:17Z"}],"events":[{"event_type":"record_created","subject_pith_number":"pith:2015:CM5SV4W3ZXMAAJXIBA7KEZ3H6Z","target":"record","payload":{"canonical_record":{"source":{"id":"1502.07204","kind":"arxiv","version":2},"metadata":{"license":"http://arxiv.org/licenses/nonexclusive-distrib/1.0/","primary_cat":"astro-ph.IM","submitted_at":"2015-02-25T15:38:36Z","cross_cats_sorted":["astro-ph.HE"],"title_canon_sha256":"0e9cbd397ffbadb0f108a132ba05036f416ea36cb7e2740e973e075c48347474","abstract_canon_sha256":"bf9da4174e8ff78f2e887b2c1048dcf9db26ba73ae39e0a01f2f1315528cec15"},"schema_version":"1.0"},"canonical_sha256":"133b2af2dbcdd80026e8083ea26767f6495d1b827e357bba2a003f6a3c1ef9d0","receipt":{"kind":"pith_receipt","key_id":"pith-v1-2026-05","algorithm":"ed25519","signed_at":"2026-05-18T02:17:42.367752Z","signature_b64":"jgm94pdfCy5lGN9ruO2ZHGc+d2rONa+VJd4UMl409T8FwdZ+dFcAVVSQBrnxyWW5x4VUXtfLZunaTTgf5F6gBQ==","signed_message":"canonical_sha256_bytes","builder_version":"pith-number-builder-2026-05-17-v1","receipt_version":"0.3","canonical_sha256":"133b2af2dbcdd80026e8083ea26767f6495d1b827e357bba2a003f6a3c1ef9d0","last_reissued_at":"2026-05-18T02:17:42.367266Z","signature_status":"signed_v1","first_computed_at":"2026-05-18T02:17:42.367266Z","public_key_fingerprint":"8d4b5ee74e4693bcd1df2446408b0d54"},"source_kind":"arxiv","source_id":"1502.07204","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":"2026-05-18T02:17:42Z","supersedes":[],"prev_event":null,"signature":{"signature_status":"signed_v1","algorithm":"ed25519","key_id":"pith-v1-2026-05","public_key_fingerprint":"8d4b5ee74e4693bcd1df2446408b0d54","signature_b64":"XeQjwXc7zerAp9k7l2c1iUljaysEhc0C2YAk2dvkAtJ6fR3Cf2Al3+A1pleDud80nFvhP7a3XTNMKK9bK3BsAQ==","signed_message":"open_graph_event_sha256_bytes","signed_at":"2026-06-04T18:21:07.178906Z"},"content_sha256":"2c08afc1239a48d7efb042be6a433e983a9f55afa4c50d26c436fd29f8a13bc6","schema_version":"1.0","event_id":"sha256:2c08afc1239a48d7efb042be6a433e983a9f55afa4c50d26c436fd29f8a13bc6"},{"event_type":"graph_snapshot","subject_pith_number":"pith:2015:CM5SV4W3ZXMAAJXIBA7KEZ3H6Z","target":"graph","payload":{"graph_snapshot":{"paper":{"title":"The Swift UVOT grism calibration and example spectra","license":"http://arxiv.org/licenses/nonexclusive-distrib/1.0/","headline":"","cross_cats":["astro-ph.HE"],"primary_cat":"astro-ph.IM","authors_text":"Alice Breeveld, Mat Page, Paul Kuin","submitted_at":"2015-02-25T15:38:36Z","abstract_excerpt":"The calibration of the two UVOT grisms which provide slitless spectroscopy in the 170-500 nm (UV grism) and 295-660 nm (visible grism) ranges has been completed. The UV grism has a spectral resolution ($\\lambda/\\Delta\\lambda$) of 75 at $\\lambda$2600 \\AA\\ for source magnitudes of u=10-16 mag, while the visible grism has a spectral resolution of 100 at $\\lambda$4000 \\AA\\ for source magnitudes of b=12-17 mag. For brighter spectra, coincidence loss (pile-up) occurs in the photon-counting detector. A correction for the coincidence loss in grism spectra has been developed, and limits have been estab"},"claims":{"count":0,"items":[],"snapshot_sha256":"258153158e38e3291e3d48162225fcdb2d5a3ed65a07baac614ab91432fd4f57"},"source":{"id":"1502.07204","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":"2026-05-18T02:17:42Z","supersedes":[],"prev_event":null,"signature":{"signature_status":"signed_v1","algorithm":"ed25519","key_id":"pith-v1-2026-05","public_key_fingerprint":"8d4b5ee74e4693bcd1df2446408b0d54","signature_b64":"JOo0X/GM5oa9ynU+MC1Rt3ZV3vwN/q3wf9Njuj15IO7bQLB0oD0eIaXmjq1cfZZ7TVu9ixhW1yL/XdD8YWK5AA==","signed_message":"open_graph_event_sha256_bytes","signed_at":"2026-06-04T18:21:07.179254Z"},"content_sha256":"ab0dbf08aef32192dcb2feb0657cf447b12cbdc3f9edbf383be3d9f27fbf58bf","schema_version":"1.0","event_id":"sha256:ab0dbf08aef32192dcb2feb0657cf447b12cbdc3f9edbf383be3d9f27fbf58bf"}],"timestamp_proofs":[],"mirror_hints":[{"mirror_type":"https","name":"Pith Resolver","base_url":"https://pith.science","bundle_url":"https://pith.science/pith/CM5SV4W3ZXMAAJXIBA7KEZ3H6Z/bundle.json","state_url":"https://pith.science/pith/CM5SV4W3ZXMAAJXIBA7KEZ3H6Z/state.json","well_known_bundle_url":"https://pith.science/.well-known/pith/CM5SV4W3ZXMAAJXIBA7KEZ3H6Z/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":"2026-06-04T18:21:07Z","links":{"resolver":"https://pith.science/pith/CM5SV4W3ZXMAAJXIBA7KEZ3H6Z","bundle":"https://pith.science/pith/CM5SV4W3ZXMAAJXIBA7KEZ3H6Z/bundle.json","state":"https://pith.science/pith/CM5SV4W3ZXMAAJXIBA7KEZ3H6Z/state.json","well_known_bundle":"https://pith.science/.well-known/pith/CM5SV4W3ZXMAAJXIBA7KEZ3H6Z/bundle.json"},"state":{"state_type":"pith_open_graph_state","state_version":"1.0","pith_number":"pith:2015:CM5SV4W3ZXMAAJXIBA7KEZ3H6Z","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":"bf9da4174e8ff78f2e887b2c1048dcf9db26ba73ae39e0a01f2f1315528cec15","cross_cats_sorted":["astro-ph.HE"],"license":"http://arxiv.org/licenses/nonexclusive-distrib/1.0/","primary_cat":"astro-ph.IM","submitted_at":"2015-02-25T15:38:36Z","title_canon_sha256":"0e9cbd397ffbadb0f108a132ba05036f416ea36cb7e2740e973e075c48347474"},"schema_version":"1.0","source":{"id":"1502.07204","kind":"arxiv","version":2}},"source_aliases":[{"alias_kind":"arxiv","alias_value":"1502.07204","created_at":"2026-05-18T02:17:42Z"},{"alias_kind":"arxiv_version","alias_value":"1502.07204v2","created_at":"2026-05-18T02:17:42Z"},{"alias_kind":"doi","alias_value":"10.48550/arxiv.1502.07204","created_at":"2026-05-18T02:17:42Z"},{"alias_kind":"pith_short_12","alias_value":"CM5SV4W3ZXMA","created_at":"2026-05-18T12:29:17Z"},{"alias_kind":"pith_short_16","alias_value":"CM5SV4W3ZXMAAJXI","created_at":"2026-05-18T12:29:17Z"},{"alias_kind":"pith_short_8","alias_value":"CM5SV4W3","created_at":"2026-05-18T12:29:17Z"}],"graph_snapshots":[{"event_id":"sha256:ab0dbf08aef32192dcb2feb0657cf447b12cbdc3f9edbf383be3d9f27fbf58bf","target":"graph","created_at":"2026-05-18T02:17:42Z","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 calibration of the two UVOT grisms which provide slitless spectroscopy in the 170-500 nm (UV grism) and 295-660 nm (visible grism) ranges has been completed. The UV grism has a spectral resolution ($\\lambda/\\Delta\\lambda$) of 75 at $\\lambda$2600 \\AA\\ for source magnitudes of u=10-16 mag, while the visible grism has a spectral resolution of 100 at $\\lambda$4000 \\AA\\ for source magnitudes of b=12-17 mag. For brighter spectra, coincidence loss (pile-up) occurs in the photon-counting detector. A correction for the coincidence loss in grism spectra has been developed, and limits have been estab","authors_text":"Alice Breeveld, Mat Page, Paul Kuin","cross_cats":["astro-ph.HE"],"headline":"","license":"http://arxiv.org/licenses/nonexclusive-distrib/1.0/","primary_cat":"astro-ph.IM","submitted_at":"2015-02-25T15:38:36Z","title":"The Swift UVOT grism calibration and example spectra"},"references":{"count":0,"internal_anchors":0,"resolved_work":0,"sample":[],"snapshot_sha256":"258153158e38e3291e3d48162225fcdb2d5a3ed65a07baac614ab91432fd4f57"},"source":{"id":"1502.07204","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":"sha256:2c08afc1239a48d7efb042be6a433e983a9f55afa4c50d26c436fd29f8a13bc6","target":"record","created_at":"2026-05-18T02:17:42Z","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":"bf9da4174e8ff78f2e887b2c1048dcf9db26ba73ae39e0a01f2f1315528cec15","cross_cats_sorted":["astro-ph.HE"],"license":"http://arxiv.org/licenses/nonexclusive-distrib/1.0/","primary_cat":"astro-ph.IM","submitted_at":"2015-02-25T15:38:36Z","title_canon_sha256":"0e9cbd397ffbadb0f108a132ba05036f416ea36cb7e2740e973e075c48347474"},"schema_version":"1.0","source":{"id":"1502.07204","kind":"arxiv","version":2}},"canonical_sha256":"133b2af2dbcdd80026e8083ea26767f6495d1b827e357bba2a003f6a3c1ef9d0","receipt":{"algorithm":"ed25519","builder_version":"pith-number-builder-2026-05-17-v1","canonical_sha256":"133b2af2dbcdd80026e8083ea26767f6495d1b827e357bba2a003f6a3c1ef9d0","first_computed_at":"2026-05-18T02:17:42.367266Z","key_id":"pith-v1-2026-05","kind":"pith_receipt","last_reissued_at":"2026-05-18T02:17:42.367266Z","public_key_fingerprint":"8d4b5ee74e4693bcd1df2446408b0d54","receipt_version":"0.3","signature_b64":"jgm94pdfCy5lGN9ruO2ZHGc+d2rONa+VJd4UMl409T8FwdZ+dFcAVVSQBrnxyWW5x4VUXtfLZunaTTgf5F6gBQ==","signature_status":"signed_v1","signed_at":"2026-05-18T02:17:42.367752Z","signed_message":"canonical_sha256_bytes"},"source_id":"1502.07204","source_kind":"arxiv","source_version":2}}},"equivocations":[],"invalid_events":[],"applied_event_ids":["sha256:2c08afc1239a48d7efb042be6a433e983a9f55afa4c50d26c436fd29f8a13bc6","sha256:ab0dbf08aef32192dcb2feb0657cf447b12cbdc3f9edbf383be3d9f27fbf58bf"],"state_sha256":"131068d6e713788adf30bd329a40549ecf7bc0fd9ef474040b1d31c34dec75ea"},"bundle_signature":{"signature_status":"signed_v1","algorithm":"ed25519","key_id":"pith-v1-2026-05","public_key_fingerprint":"8d4b5ee74e4693bcd1df2446408b0d54","signature_b64":"5zKfGtQ/yLushbffnrMrh+PHnBWrkIyy/yGxnHMKrG9Ne+vSGjmIwPWqq8nclD6CzIH2dbv7dLt9akr6SQBxCw==","signed_message":"bundle_sha256_bytes","signed_at":"2026-06-04T18:21:07.181268Z","bundle_sha256":"d4a7e3718831efffc5d06f1583255cf9ad3402bfaeab13b7b1619960979f682b"}}