{"bundle_type":"pith_open_graph_bundle","bundle_version":"1.0","pith_number":"pith:2012:WW4OABISDEJPJ5VBKDUZVVZFCP","short_pith_number":"pith:WW4OABIS","canonical_record":{"source":{"id":"1210.4447","kind":"arxiv","version":1},"metadata":{"license":"http://arxiv.org/licenses/nonexclusive-distrib/1.0/","primary_cat":"astro-ph.GA","submitted_at":"2012-10-16T15:11:27Z","cross_cats_sorted":[],"title_canon_sha256":"0043631fed1401f3ea9864fdd69e893a7178fc6f62b2e22a235ece3dee76f2f1","abstract_canon_sha256":"7a33863a99236a5b81296eda023a9f38488ccf811c0433038688aaab19589f67"},"schema_version":"1.0"},"canonical_sha256":"b5b8e005121912f4f6a150e99ad72513d2c77534a5950be6856e0cf41923fc4b","source":{"kind":"arxiv","id":"1210.4447","version":1},"source_aliases":[{"alias_kind":"arxiv","alias_value":"1210.4447","created_at":"2026-05-18T01:53:54Z"},{"alias_kind":"arxiv_version","alias_value":"1210.4447v1","created_at":"2026-05-18T01:53:54Z"},{"alias_kind":"doi","alias_value":"10.48550/arxiv.1210.4447","created_at":"2026-05-18T01:53:54Z"},{"alias_kind":"pith_short_12","alias_value":"WW4OABISDEJP","created_at":"2026-05-18T12:27:27Z"},{"alias_kind":"pith_short_16","alias_value":"WW4OABISDEJPJ5VB","created_at":"2026-05-18T12:27:27Z"},{"alias_kind":"pith_short_8","alias_value":"WW4OABIS","created_at":"2026-05-18T12:27:27Z"}],"events":[{"event_type":"record_created","subject_pith_number":"pith:2012:WW4OABISDEJPJ5VBKDUZVVZFCP","target":"record","payload":{"canonical_record":{"source":{"id":"1210.4447","kind":"arxiv","version":1},"metadata":{"license":"http://arxiv.org/licenses/nonexclusive-distrib/1.0/","primary_cat":"astro-ph.GA","submitted_at":"2012-10-16T15:11:27Z","cross_cats_sorted":[],"title_canon_sha256":"0043631fed1401f3ea9864fdd69e893a7178fc6f62b2e22a235ece3dee76f2f1","abstract_canon_sha256":"7a33863a99236a5b81296eda023a9f38488ccf811c0433038688aaab19589f67"},"schema_version":"1.0"},"canonical_sha256":"b5b8e005121912f4f6a150e99ad72513d2c77534a5950be6856e0cf41923fc4b","receipt":{"kind":"pith_receipt","key_id":"pith-v1-2026-05","algorithm":"ed25519","signed_at":"2026-05-18T01:53:54.293656Z","signature_b64":"gu1AEvFkNSxnqtysAoIWg0VzB+ZPJ6hBbhgYCCRaxjL6sAKxiECh0x+nRkL/EiZciMbCGFtioBiK2hf2ZaQUAQ==","signed_message":"canonical_sha256_bytes","builder_version":"pith-number-builder-2026-05-17-v1","receipt_version":"0.3","canonical_sha256":"b5b8e005121912f4f6a150e99ad72513d2c77534a5950be6856e0cf41923fc4b","last_reissued_at":"2026-05-18T01:53:54.293119Z","signature_status":"signed_v1","first_computed_at":"2026-05-18T01:53:54.293119Z","public_key_fingerprint":"8d4b5ee74e4693bcd1df2446408b0d54"},"source_kind":"arxiv","source_id":"1210.4447","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":"2026-05-18T01:53:54Z","supersedes":[],"prev_event":null,"signature":{"signature_status":"signed_v1","algorithm":"ed25519","key_id":"pith-v1-2026-05","public_key_fingerprint":"8d4b5ee74e4693bcd1df2446408b0d54","signature_b64":"W7sRS4fpmrfI/8uvq7SJjUwzbvZnN2ruTFEBVbgoZPE16ZU0z28c9umHmXKXgDjX8+aJSi+jpJB7J9OehQhmCg==","signed_message":"open_graph_event_sha256_bytes","signed_at":"2026-07-07T07:23:55.588376Z"},"content_sha256":"1b08483032b859b491276fbc15cdc27e3446e061e8c5842dac785d2a8261641a","schema_version":"1.0","event_id":"sha256:1b08483032b859b491276fbc15cdc27e3446e061e8c5842dac785d2a8261641a"},{"event_type":"graph_snapshot","subject_pith_number":"pith:2012:WW4OABISDEJPJ5VBKDUZVVZFCP","target":"graph","payload":{"graph_snapshot":{"paper":{"title":"The VLT-FLAMES Tarantula Survey. IX. The interstellar medium seen through Diffuse Interstellar Bands and neutral sodium","license":"http://arxiv.org/licenses/nonexclusive-distrib/1.0/","headline":"","cross_cats":[],"primary_cat":"astro-ph.GA","authors_text":"Alex de Koter (Amsterdam), Benjamin L. Tatton (Keele), Christopher J. Evans (UK ATC Edinburgh), Hugues Sana (Amsterdam), Ian D. Howarth (UCL), Jacco Th. van Loon (Keele University, Jesus Maiz Apellaniz (IAA Granada), Mandy Bailey (Keele), Nolan R. Walborn (STScI), Paul A. Crowther (Sheffield), Philipp Richter (Potsdam), Sergio Simon-Diaz (IAC & La Laguna), UK), Vincent Henault-Brunet (SUPA Edinburgh), William Taylor (UK ATC Edinburgh)","submitted_at":"2012-10-16T15:11:27Z","abstract_excerpt":"The Tarantula Nebula (30 Dor) is a spectacular star-forming region in the Large Magellanic Cloud, seen through gas in the Galactic Disc and Halo. Diffuse Interstellar Bands offer a unique probe of the diffuse, cool-warm gas in these regions. The aim is to use DIBs as diagnostics of the local interstellar conditions, whilst at the same time deriving properties of the yet-unknown carriers. Spectra of over 800 early-type stars from the VLT Flames Tarantula Survey (VFTS) were analysed. Maps were created, separately, for the Galactic and LMC absorption in the DIBs at 4428 and 6614 Ang and - in a sm"},"claims":{"count":0,"items":[],"snapshot_sha256":"258153158e38e3291e3d48162225fcdb2d5a3ed65a07baac614ab91432fd4f57"},"source":{"id":"1210.4447","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":"2026-05-18T01:53:54Z","supersedes":[],"prev_event":null,"signature":{"signature_status":"signed_v1","algorithm":"ed25519","key_id":"pith-v1-2026-05","public_key_fingerprint":"8d4b5ee74e4693bcd1df2446408b0d54","signature_b64":"RFW4JerVPUl2VAbUmdTzcjiIvGnk7A52zOnHL/rd7vflbv+w+yo/fPleB9n5f1PlyCnwo7++hTSa1/hPtWjgAg==","signed_message":"open_graph_event_sha256_bytes","signed_at":"2026-07-07T07:23:55.588984Z"},"content_sha256":"8462f20b01240bc5095e1b7b80ac54631d98496f99fb3aca0424a86f1296c5d7","schema_version":"1.0","event_id":"sha256:8462f20b01240bc5095e1b7b80ac54631d98496f99fb3aca0424a86f1296c5d7"}],"timestamp_proofs":[],"mirror_hints":[{"mirror_type":"https","name":"Pith Resolver","base_url":"https://pith.science","bundle_url":"https://pith.science/pith/WW4OABISDEJPJ5VBKDUZVVZFCP/bundle.json","state_url":"https://pith.science/pith/WW4OABISDEJPJ5VBKDUZVVZFCP/state.json","well_known_bundle_url":"https://pith.science/.well-known/pith/WW4OABISDEJPJ5VBKDUZVVZFCP/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":"2026-07-07T07:23:55Z","links":{"resolver":"https://pith.science/pith/WW4OABISDEJPJ5VBKDUZVVZFCP","bundle":"https://pith.science/pith/WW4OABISDEJPJ5VBKDUZVVZFCP/bundle.json","state":"https://pith.science/pith/WW4OABISDEJPJ5VBKDUZVVZFCP/state.json","well_known_bundle":"https://pith.science/.well-known/pith/WW4OABISDEJPJ5VBKDUZVVZFCP/bundle.json"},"state":{"state_type":"pith_open_graph_state","state_version":"1.0","pith_number":"pith:2012:WW4OABISDEJPJ5VBKDUZVVZFCP","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":"7a33863a99236a5b81296eda023a9f38488ccf811c0433038688aaab19589f67","cross_cats_sorted":[],"license":"http://arxiv.org/licenses/nonexclusive-distrib/1.0/","primary_cat":"astro-ph.GA","submitted_at":"2012-10-16T15:11:27Z","title_canon_sha256":"0043631fed1401f3ea9864fdd69e893a7178fc6f62b2e22a235ece3dee76f2f1"},"schema_version":"1.0","source":{"id":"1210.4447","kind":"arxiv","version":1}},"source_aliases":[{"alias_kind":"arxiv","alias_value":"1210.4447","created_at":"2026-05-18T01:53:54Z"},{"alias_kind":"arxiv_version","alias_value":"1210.4447v1","created_at":"2026-05-18T01:53:54Z"},{"alias_kind":"doi","alias_value":"10.48550/arxiv.1210.4447","created_at":"2026-05-18T01:53:54Z"},{"alias_kind":"pith_short_12","alias_value":"WW4OABISDEJP","created_at":"2026-05-18T12:27:27Z"},{"alias_kind":"pith_short_16","alias_value":"WW4OABISDEJPJ5VB","created_at":"2026-05-18T12:27:27Z"},{"alias_kind":"pith_short_8","alias_value":"WW4OABIS","created_at":"2026-05-18T12:27:27Z"}],"graph_snapshots":[{"event_id":"sha256:8462f20b01240bc5095e1b7b80ac54631d98496f99fb3aca0424a86f1296c5d7","target":"graph","created_at":"2026-05-18T01:53:54Z","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 Tarantula Nebula (30 Dor) is a spectacular star-forming region in the Large Magellanic Cloud, seen through gas in the Galactic Disc and Halo. Diffuse Interstellar Bands offer a unique probe of the diffuse, cool-warm gas in these regions. The aim is to use DIBs as diagnostics of the local interstellar conditions, whilst at the same time deriving properties of the yet-unknown carriers. Spectra of over 800 early-type stars from the VLT Flames Tarantula Survey (VFTS) were analysed. Maps were created, separately, for the Galactic and LMC absorption in the DIBs at 4428 and 6614 Ang and - in a sm","authors_text":"Alex de Koter (Amsterdam), Benjamin L. Tatton (Keele), Christopher J. Evans (UK ATC Edinburgh), Hugues Sana (Amsterdam), Ian D. Howarth (UCL), Jacco Th. van Loon (Keele University, Jesus Maiz Apellaniz (IAA Granada), Mandy Bailey (Keele), Nolan R. Walborn (STScI), Paul A. Crowther (Sheffield), Philipp Richter (Potsdam), Sergio Simon-Diaz (IAC & La Laguna), UK), Vincent Henault-Brunet (SUPA Edinburgh), William Taylor (UK ATC Edinburgh)","cross_cats":[],"headline":"","license":"http://arxiv.org/licenses/nonexclusive-distrib/1.0/","primary_cat":"astro-ph.GA","submitted_at":"2012-10-16T15:11:27Z","title":"The VLT-FLAMES Tarantula Survey. IX. The interstellar medium seen through Diffuse Interstellar Bands and neutral sodium"},"references":{"count":0,"internal_anchors":0,"resolved_work":0,"sample":[],"snapshot_sha256":"258153158e38e3291e3d48162225fcdb2d5a3ed65a07baac614ab91432fd4f57"},"source":{"id":"1210.4447","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":"sha256:1b08483032b859b491276fbc15cdc27e3446e061e8c5842dac785d2a8261641a","target":"record","created_at":"2026-05-18T01:53:54Z","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":"7a33863a99236a5b81296eda023a9f38488ccf811c0433038688aaab19589f67","cross_cats_sorted":[],"license":"http://arxiv.org/licenses/nonexclusive-distrib/1.0/","primary_cat":"astro-ph.GA","submitted_at":"2012-10-16T15:11:27Z","title_canon_sha256":"0043631fed1401f3ea9864fdd69e893a7178fc6f62b2e22a235ece3dee76f2f1"},"schema_version":"1.0","source":{"id":"1210.4447","kind":"arxiv","version":1}},"canonical_sha256":"b5b8e005121912f4f6a150e99ad72513d2c77534a5950be6856e0cf41923fc4b","receipt":{"algorithm":"ed25519","builder_version":"pith-number-builder-2026-05-17-v1","canonical_sha256":"b5b8e005121912f4f6a150e99ad72513d2c77534a5950be6856e0cf41923fc4b","first_computed_at":"2026-05-18T01:53:54.293119Z","key_id":"pith-v1-2026-05","kind":"pith_receipt","last_reissued_at":"2026-05-18T01:53:54.293119Z","public_key_fingerprint":"8d4b5ee74e4693bcd1df2446408b0d54","receipt_version":"0.3","signature_b64":"gu1AEvFkNSxnqtysAoIWg0VzB+ZPJ6hBbhgYCCRaxjL6sAKxiECh0x+nRkL/EiZciMbCGFtioBiK2hf2ZaQUAQ==","signature_status":"signed_v1","signed_at":"2026-05-18T01:53:54.293656Z","signed_message":"canonical_sha256_bytes"},"source_id":"1210.4447","source_kind":"arxiv","source_version":1}}},"equivocations":[],"invalid_events":[],"applied_event_ids":["sha256:1b08483032b859b491276fbc15cdc27e3446e061e8c5842dac785d2a8261641a","sha256:8462f20b01240bc5095e1b7b80ac54631d98496f99fb3aca0424a86f1296c5d7"],"state_sha256":"b802027bbaa559d9ee9eb1ae54fc5c27464ab3b61691c061b826cf357c065257"},"bundle_signature":{"signature_status":"signed_v1","algorithm":"ed25519","key_id":"pith-v1-2026-05","public_key_fingerprint":"8d4b5ee74e4693bcd1df2446408b0d54","signature_b64":"RDuuksi0bpBYl+WpLw10sqygGHJaE2yuCFYlKDY0FFwhVO2U4sAarrthQYcA/878mqYgKVwv+cc+uR/ry4omCg==","signed_message":"bundle_sha256_bytes","signed_at":"2026-07-07T07:23:55.592038Z","bundle_sha256":"f52f0cf0077e3bc9ad3be60a5e8b2c899b2a8552e640337feaae470e2e7badda"}}