{"bundle_type":"pith_open_graph_bundle","bundle_version":"1.0","pith_number":"pith:2016:3EDTTGOE6W6FEZB6ZUP6ZHMT7H","short_pith_number":"pith:3EDTTGOE","canonical_record":{"source":{"id":"1609.01610","kind":"arxiv","version":2},"metadata":{"license":"http://arxiv.org/licenses/nonexclusive-distrib/1.0/","primary_cat":"physics.atom-ph","submitted_at":"2016-09-06T15:34:59Z","cross_cats_sorted":[],"title_canon_sha256":"8c63a66755901a1a113a15b85fe3bc60b4db585cd38c1dee9ab99cd51c4d9412","abstract_canon_sha256":"a058e24a482077e705f328b844c5296f8928c858c97f162df692040ddc7b1ae4"},"schema_version":"1.0"},"canonical_sha256":"d9073999c4f5bc52643ecd1fec9d93f9d98aa627d626e4005d47a5878a03acf1","source":{"kind":"arxiv","id":"1609.01610","version":2},"source_aliases":[{"alias_kind":"arxiv","alias_value":"1609.01610","created_at":"2026-05-18T00:52:25Z"},{"alias_kind":"arxiv_version","alias_value":"1609.01610v2","created_at":"2026-05-18T00:52:25Z"},{"alias_kind":"doi","alias_value":"10.48550/arxiv.1609.01610","created_at":"2026-05-18T00:52:25Z"},{"alias_kind":"pith_short_12","alias_value":"3EDTTGOE6W6F","created_at":"2026-05-18T12:29:55Z"},{"alias_kind":"pith_short_16","alias_value":"3EDTTGOE6W6FEZB6","created_at":"2026-05-18T12:29:55Z"},{"alias_kind":"pith_short_8","alias_value":"3EDTTGOE","created_at":"2026-05-18T12:29:55Z"}],"events":[{"event_type":"record_created","subject_pith_number":"pith:2016:3EDTTGOE6W6FEZB6ZUP6ZHMT7H","target":"record","payload":{"canonical_record":{"source":{"id":"1609.01610","kind":"arxiv","version":2},"metadata":{"license":"http://arxiv.org/licenses/nonexclusive-distrib/1.0/","primary_cat":"physics.atom-ph","submitted_at":"2016-09-06T15:34:59Z","cross_cats_sorted":[],"title_canon_sha256":"8c63a66755901a1a113a15b85fe3bc60b4db585cd38c1dee9ab99cd51c4d9412","abstract_canon_sha256":"a058e24a482077e705f328b844c5296f8928c858c97f162df692040ddc7b1ae4"},"schema_version":"1.0"},"canonical_sha256":"d9073999c4f5bc52643ecd1fec9d93f9d98aa627d626e4005d47a5878a03acf1","receipt":{"kind":"pith_receipt","key_id":"pith-v1-2026-05","algorithm":"ed25519","signed_at":"2026-05-18T00:52:25.360752Z","signature_b64":"dlYh23BYxT3QUV91ceylpjp68XqQ1IhwRAPmP2+w0FUzp2cuwBlSsujtVbdhWgxNdHbiBzL4C9zIWaYpL94QCg==","signed_message":"canonical_sha256_bytes","builder_version":"pith-number-builder-2026-05-17-v1","receipt_version":"0.3","canonical_sha256":"d9073999c4f5bc52643ecd1fec9d93f9d98aa627d626e4005d47a5878a03acf1","last_reissued_at":"2026-05-18T00:52:25.360069Z","signature_status":"signed_v1","first_computed_at":"2026-05-18T00:52:25.360069Z","public_key_fingerprint":"8d4b5ee74e4693bcd1df2446408b0d54"},"source_kind":"arxiv","source_id":"1609.01610","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":"2026-05-18T00:52:25Z","supersedes":[],"prev_event":null,"signature":{"signature_status":"signed_v1","algorithm":"ed25519","key_id":"pith-v1-2026-05","public_key_fingerprint":"8d4b5ee74e4693bcd1df2446408b0d54","signature_b64":"d/1JUkh/BJ1i079eke7++ROrFoBN0Y5s7NzOHCi8AOzTMSN7zIwodKddBM9GcgIkZbdxZ/t2UBfreAW6BCDjBA==","signed_message":"open_graph_event_sha256_bytes","signed_at":"2026-05-27T01:10:35.270719Z"},"content_sha256":"c297e051c902bbc8346920d627f2b5201633891a76ffb5e46c17bbcb3a90680b","schema_version":"1.0","event_id":"sha256:c297e051c902bbc8346920d627f2b5201633891a76ffb5e46c17bbcb3a90680b"},{"event_type":"graph_snapshot","subject_pith_number":"pith:2016:3EDTTGOE6W6FEZB6ZUP6ZHMT7H","target":"graph","payload":{"graph_snapshot":{"paper":{"title":"Absolute frequency measurement of the 1S0 - 3P0 transition of 171Yb","license":"http://arxiv.org/licenses/nonexclusive-distrib/1.0/","headline":"","cross_cats":[],"primary_cat":"physics.atom-ph","authors_text":"Benjamin Rauf, Cecilia Clivati, Davide Calonico, Filippo Bregolin, Filippo Levi, Gianmaria Milani, Giovanni A. Costanzo, Marco Pizzocaro, Pierre Thoumany","submitted_at":"2016-09-06T15:34:59Z","abstract_excerpt":"We report the absolute frequency measurement of the unperturbed transition 1S0 - 3P0 at 578 nm in 171Yb realized in an optical lattice frequency standard. The absolute frequency is measured 518 295 836 590 863.55(28) Hz relative to a cryogenic caesium fountain with a fractional uncertainty of 5.4x10-16 . This value is in agreement with the ytterbium frequency recommended as a secondary representation of the second in the International System of Units."},"claims":{"count":0,"items":[],"snapshot_sha256":"258153158e38e3291e3d48162225fcdb2d5a3ed65a07baac614ab91432fd4f57"},"source":{"id":"1609.01610","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":"2026-05-18T00:52:25Z","supersedes":[],"prev_event":null,"signature":{"signature_status":"signed_v1","algorithm":"ed25519","key_id":"pith-v1-2026-05","public_key_fingerprint":"8d4b5ee74e4693bcd1df2446408b0d54","signature_b64":"rVmuo0DvVXiceSkeRkGriKyUGMEtJ6L57H4BkpuZH/FbyP2JMRJaYNSLID+pwlsY+VWQkk0Eof76p0yiIkl9CA==","signed_message":"open_graph_event_sha256_bytes","signed_at":"2026-05-27T01:10:35.271352Z"},"content_sha256":"fc69401b996112edfc74099d9b135aad30a1384e485ae92d23ae719a35fecd2f","schema_version":"1.0","event_id":"sha256:fc69401b996112edfc74099d9b135aad30a1384e485ae92d23ae719a35fecd2f"}],"timestamp_proofs":[],"mirror_hints":[{"mirror_type":"https","name":"Pith Resolver","base_url":"https://pith.science","bundle_url":"https://pith.science/pith/3EDTTGOE6W6FEZB6ZUP6ZHMT7H/bundle.json","state_url":"https://pith.science/pith/3EDTTGOE6W6FEZB6ZUP6ZHMT7H/state.json","well_known_bundle_url":"https://pith.science/.well-known/pith/3EDTTGOE6W6FEZB6ZUP6ZHMT7H/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":"2026-05-27T01:10:35Z","links":{"resolver":"https://pith.science/pith/3EDTTGOE6W6FEZB6ZUP6ZHMT7H","bundle":"https://pith.science/pith/3EDTTGOE6W6FEZB6ZUP6ZHMT7H/bundle.json","state":"https://pith.science/pith/3EDTTGOE6W6FEZB6ZUP6ZHMT7H/state.json","well_known_bundle":"https://pith.science/.well-known/pith/3EDTTGOE6W6FEZB6ZUP6ZHMT7H/bundle.json"},"state":{"state_type":"pith_open_graph_state","state_version":"1.0","pith_number":"pith:2016:3EDTTGOE6W6FEZB6ZUP6ZHMT7H","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":"a058e24a482077e705f328b844c5296f8928c858c97f162df692040ddc7b1ae4","cross_cats_sorted":[],"license":"http://arxiv.org/licenses/nonexclusive-distrib/1.0/","primary_cat":"physics.atom-ph","submitted_at":"2016-09-06T15:34:59Z","title_canon_sha256":"8c63a66755901a1a113a15b85fe3bc60b4db585cd38c1dee9ab99cd51c4d9412"},"schema_version":"1.0","source":{"id":"1609.01610","kind":"arxiv","version":2}},"source_aliases":[{"alias_kind":"arxiv","alias_value":"1609.01610","created_at":"2026-05-18T00:52:25Z"},{"alias_kind":"arxiv_version","alias_value":"1609.01610v2","created_at":"2026-05-18T00:52:25Z"},{"alias_kind":"doi","alias_value":"10.48550/arxiv.1609.01610","created_at":"2026-05-18T00:52:25Z"},{"alias_kind":"pith_short_12","alias_value":"3EDTTGOE6W6F","created_at":"2026-05-18T12:29:55Z"},{"alias_kind":"pith_short_16","alias_value":"3EDTTGOE6W6FEZB6","created_at":"2026-05-18T12:29:55Z"},{"alias_kind":"pith_short_8","alias_value":"3EDTTGOE","created_at":"2026-05-18T12:29:55Z"}],"graph_snapshots":[{"event_id":"sha256:fc69401b996112edfc74099d9b135aad30a1384e485ae92d23ae719a35fecd2f","target":"graph","created_at":"2026-05-18T00:52:25Z","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 report the absolute frequency measurement of the unperturbed transition 1S0 - 3P0 at 578 nm in 171Yb realized in an optical lattice frequency standard. The absolute frequency is measured 518 295 836 590 863.55(28) Hz relative to a cryogenic caesium fountain with a fractional uncertainty of 5.4x10-16 . This value is in agreement with the ytterbium frequency recommended as a secondary representation of the second in the International System of Units.","authors_text":"Benjamin Rauf, Cecilia Clivati, Davide Calonico, Filippo Bregolin, Filippo Levi, Gianmaria Milani, Giovanni A. Costanzo, Marco Pizzocaro, Pierre Thoumany","cross_cats":[],"headline":"","license":"http://arxiv.org/licenses/nonexclusive-distrib/1.0/","primary_cat":"physics.atom-ph","submitted_at":"2016-09-06T15:34:59Z","title":"Absolute frequency measurement of the 1S0 - 3P0 transition of 171Yb"},"references":{"count":0,"internal_anchors":0,"resolved_work":0,"sample":[],"snapshot_sha256":"258153158e38e3291e3d48162225fcdb2d5a3ed65a07baac614ab91432fd4f57"},"source":{"id":"1609.01610","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:c297e051c902bbc8346920d627f2b5201633891a76ffb5e46c17bbcb3a90680b","target":"record","created_at":"2026-05-18T00:52:25Z","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":"a058e24a482077e705f328b844c5296f8928c858c97f162df692040ddc7b1ae4","cross_cats_sorted":[],"license":"http://arxiv.org/licenses/nonexclusive-distrib/1.0/","primary_cat":"physics.atom-ph","submitted_at":"2016-09-06T15:34:59Z","title_canon_sha256":"8c63a66755901a1a113a15b85fe3bc60b4db585cd38c1dee9ab99cd51c4d9412"},"schema_version":"1.0","source":{"id":"1609.01610","kind":"arxiv","version":2}},"canonical_sha256":"d9073999c4f5bc52643ecd1fec9d93f9d98aa627d626e4005d47a5878a03acf1","receipt":{"algorithm":"ed25519","builder_version":"pith-number-builder-2026-05-17-v1","canonical_sha256":"d9073999c4f5bc52643ecd1fec9d93f9d98aa627d626e4005d47a5878a03acf1","first_computed_at":"2026-05-18T00:52:25.360069Z","key_id":"pith-v1-2026-05","kind":"pith_receipt","last_reissued_at":"2026-05-18T00:52:25.360069Z","public_key_fingerprint":"8d4b5ee74e4693bcd1df2446408b0d54","receipt_version":"0.3","signature_b64":"dlYh23BYxT3QUV91ceylpjp68XqQ1IhwRAPmP2+w0FUzp2cuwBlSsujtVbdhWgxNdHbiBzL4C9zIWaYpL94QCg==","signature_status":"signed_v1","signed_at":"2026-05-18T00:52:25.360752Z","signed_message":"canonical_sha256_bytes"},"source_id":"1609.01610","source_kind":"arxiv","source_version":2}}},"equivocations":[],"invalid_events":[],"applied_event_ids":["sha256:c297e051c902bbc8346920d627f2b5201633891a76ffb5e46c17bbcb3a90680b","sha256:fc69401b996112edfc74099d9b135aad30a1384e485ae92d23ae719a35fecd2f"],"state_sha256":"22c469b26eb3c94863d6692a11bdd551a73573e44bcc192f8be90e2b58b88269"},"bundle_signature":{"signature_status":"signed_v1","algorithm":"ed25519","key_id":"pith-v1-2026-05","public_key_fingerprint":"8d4b5ee74e4693bcd1df2446408b0d54","signature_b64":"ZbH6PMnYVlZwLTIUyNotmL8ogJLt8bi/bBTXSuEZkQpJTblKB/USAP9buMOCSuIjS1dI2ErDPcitjSlEXFtUCg==","signed_message":"bundle_sha256_bytes","signed_at":"2026-05-27T01:10:35.274669Z","bundle_sha256":"2357bfb9c778128e34c89623eb218cf48d54a646a159771740b418976692f9af"}}