{"bundle_type":"pith_open_graph_bundle","bundle_version":"1.0","pith_number":"pith:2001:7R4OZOBV6O4EGYJVA7OVDEAM4M","short_pith_number":"pith:7R4OZOBV","canonical_record":{"source":{"id":"astro-ph/0104162","kind":"arxiv","version":2},"metadata":{"license":"","primary_cat":"astro-ph","submitted_at":"2001-04-10T20:56:53Z","cross_cats_sorted":["hep-ph"],"title_canon_sha256":"be1e166c09bad1b6979b25ae8af59ccb0b8b9ac29e913b27cacbcef6bc580202","abstract_canon_sha256":"87c3f323ca6da841cf6cae3c39f7354b24d2145b9ccdcf96c90446f32f90cc97"},"schema_version":"1.0"},"canonical_sha256":"fc78ecb835f3b843613507dd51900ce320f5d78708a9150ae7edc93279412ac0","source":{"kind":"arxiv","id":"astro-ph/0104162","version":2},"source_aliases":[{"alias_kind":"arxiv","alias_value":"astro-ph/0104162","created_at":"2026-05-18T02:40:36Z"},{"alias_kind":"arxiv_version","alias_value":"astro-ph/0104162v2","created_at":"2026-05-18T02:40:36Z"},{"alias_kind":"doi","alias_value":"10.48550/arxiv.astro-ph/0104162","created_at":"2026-05-18T02:40:36Z"},{"alias_kind":"pith_short_12","alias_value":"7R4OZOBV6O4E","created_at":"2026-05-18T12:25:50Z"},{"alias_kind":"pith_short_16","alias_value":"7R4OZOBV6O4EGYJV","created_at":"2026-05-18T12:25:50Z"},{"alias_kind":"pith_short_8","alias_value":"7R4OZOBV","created_at":"2026-05-18T12:25:50Z"}],"events":[{"event_type":"record_created","subject_pith_number":"pith:2001:7R4OZOBV6O4EGYJVA7OVDEAM4M","target":"record","payload":{"canonical_record":{"source":{"id":"astro-ph/0104162","kind":"arxiv","version":2},"metadata":{"license":"","primary_cat":"astro-ph","submitted_at":"2001-04-10T20:56:53Z","cross_cats_sorted":["hep-ph"],"title_canon_sha256":"be1e166c09bad1b6979b25ae8af59ccb0b8b9ac29e913b27cacbcef6bc580202","abstract_canon_sha256":"87c3f323ca6da841cf6cae3c39f7354b24d2145b9ccdcf96c90446f32f90cc97"},"schema_version":"1.0"},"canonical_sha256":"fc78ecb835f3b843613507dd51900ce320f5d78708a9150ae7edc93279412ac0","receipt":{"kind":"pith_receipt","key_id":"pith-v1-2026-05","algorithm":"ed25519","signed_at":"2026-05-18T02:40:36.451531Z","signature_b64":"qVTsd2d4ZkYXK3SCeafVxeoa2iKsxtqJkq6UXqN+pY5quvQicLRPpCSVnHNT4MLpFxSLAPPc30TDRzgVoRi4DA==","signed_message":"canonical_sha256_bytes","builder_version":"pith-number-builder-2026-05-17-v1","receipt_version":"0.3","canonical_sha256":"fc78ecb835f3b843613507dd51900ce320f5d78708a9150ae7edc93279412ac0","last_reissued_at":"2026-05-18T02:40:36.450893Z","signature_status":"signed_v1","first_computed_at":"2026-05-18T02:40:36.450893Z","public_key_fingerprint":"8d4b5ee74e4693bcd1df2446408b0d54"},"source_kind":"arxiv","source_id":"astro-ph/0104162","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":"2026-05-18T02:40:36Z","supersedes":[],"prev_event":null,"signature":{"signature_status":"signed_v1","algorithm":"ed25519","key_id":"pith-v1-2026-05","public_key_fingerprint":"8d4b5ee74e4693bcd1df2446408b0d54","signature_b64":"Bwmdn3V8Sz75CJ1wkxY0Q3KddBf/FGrg0lchYoGdGnMHxjLiXdtZqve5108pLuyGTjHeQQccsDTkJnntl2MFDQ==","signed_message":"open_graph_event_sha256_bytes","signed_at":"2026-05-31T16:28:45.748187Z"},"content_sha256":"1be5f579469a5cf3fdf1a62232027b7c72e0a42365b77af2f58eae0eabaa317d","schema_version":"1.0","event_id":"sha256:1be5f579469a5cf3fdf1a62232027b7c72e0a42365b77af2f58eae0eabaa317d"},{"event_type":"graph_snapshot","subject_pith_number":"pith:2001:7R4OZOBV6O4EGYJVA7OVDEAM4M","target":"graph","payload":{"graph_snapshot":{"paper":{"title":"Early-universe constraints on a Primordial Scaling Field","license":"","headline":"","cross_cats":["hep-ph"],"primary_cat":"astro-ph","authors_text":"Alessandro Melchiorri, Rachel Bean, Steen H. Hansen","submitted_at":"2001-04-10T20:56:53Z","abstract_excerpt":"In the past years 'quintessence' models have been considered which can produce the accelerated expansion in the universe suggested by recent astronomical observations. One of the key differences between quintessence and a cosmological constant is that the energy density in quintessence, $\\Omega_\\phi$, could be a significant fraction of the overall energy even in the early universe, while the cosmological constant will be dynamically relevant only at late times. We use standard Big Bang Nucleosynthesis and the observed abundances of primordial nuclides to put constraints on $\\Omega_\\phi$ at tem"},"claims":{"count":0,"items":[],"snapshot_sha256":"258153158e38e3291e3d48162225fcdb2d5a3ed65a07baac614ab91432fd4f57"},"source":{"id":"astro-ph/0104162","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":"2026-05-18T02:40:36Z","supersedes":[],"prev_event":null,"signature":{"signature_status":"signed_v1","algorithm":"ed25519","key_id":"pith-v1-2026-05","public_key_fingerprint":"8d4b5ee74e4693bcd1df2446408b0d54","signature_b64":"bbcAWUFk02kV4W/cmfpV3h+DCSRKJFlTsDl2+Hbc7JUBPD/tvOKORiG5Jn3s5GaMLSlERTJLO4xicV5p5OYFAA==","signed_message":"open_graph_event_sha256_bytes","signed_at":"2026-05-31T16:28:45.748778Z"},"content_sha256":"d629f72c2c1bcea8e884f62401282369fed60ced741142d5ce797ca9ff8ba524","schema_version":"1.0","event_id":"sha256:d629f72c2c1bcea8e884f62401282369fed60ced741142d5ce797ca9ff8ba524"}],"timestamp_proofs":[],"mirror_hints":[{"mirror_type":"https","name":"Pith Resolver","base_url":"https://pith.science","bundle_url":"https://pith.science/pith/7R4OZOBV6O4EGYJVA7OVDEAM4M/bundle.json","state_url":"https://pith.science/pith/7R4OZOBV6O4EGYJVA7OVDEAM4M/state.json","well_known_bundle_url":"https://pith.science/.well-known/pith/7R4OZOBV6O4EGYJVA7OVDEAM4M/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":"2026-05-31T16:28:45Z","links":{"resolver":"https://pith.science/pith/7R4OZOBV6O4EGYJVA7OVDEAM4M","bundle":"https://pith.science/pith/7R4OZOBV6O4EGYJVA7OVDEAM4M/bundle.json","state":"https://pith.science/pith/7R4OZOBV6O4EGYJVA7OVDEAM4M/state.json","well_known_bundle":"https://pith.science/.well-known/pith/7R4OZOBV6O4EGYJVA7OVDEAM4M/bundle.json"},"state":{"state_type":"pith_open_graph_state","state_version":"1.0","pith_number":"pith:2001:7R4OZOBV6O4EGYJVA7OVDEAM4M","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":"87c3f323ca6da841cf6cae3c39f7354b24d2145b9ccdcf96c90446f32f90cc97","cross_cats_sorted":["hep-ph"],"license":"","primary_cat":"astro-ph","submitted_at":"2001-04-10T20:56:53Z","title_canon_sha256":"be1e166c09bad1b6979b25ae8af59ccb0b8b9ac29e913b27cacbcef6bc580202"},"schema_version":"1.0","source":{"id":"astro-ph/0104162","kind":"arxiv","version":2}},"source_aliases":[{"alias_kind":"arxiv","alias_value":"astro-ph/0104162","created_at":"2026-05-18T02:40:36Z"},{"alias_kind":"arxiv_version","alias_value":"astro-ph/0104162v2","created_at":"2026-05-18T02:40:36Z"},{"alias_kind":"doi","alias_value":"10.48550/arxiv.astro-ph/0104162","created_at":"2026-05-18T02:40:36Z"},{"alias_kind":"pith_short_12","alias_value":"7R4OZOBV6O4E","created_at":"2026-05-18T12:25:50Z"},{"alias_kind":"pith_short_16","alias_value":"7R4OZOBV6O4EGYJV","created_at":"2026-05-18T12:25:50Z"},{"alias_kind":"pith_short_8","alias_value":"7R4OZOBV","created_at":"2026-05-18T12:25:50Z"}],"graph_snapshots":[{"event_id":"sha256:d629f72c2c1bcea8e884f62401282369fed60ced741142d5ce797ca9ff8ba524","target":"graph","created_at":"2026-05-18T02:40:36Z","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":"In the past years 'quintessence' models have been considered which can produce the accelerated expansion in the universe suggested by recent astronomical observations. One of the key differences between quintessence and a cosmological constant is that the energy density in quintessence, $\\Omega_\\phi$, could be a significant fraction of the overall energy even in the early universe, while the cosmological constant will be dynamically relevant only at late times. We use standard Big Bang Nucleosynthesis and the observed abundances of primordial nuclides to put constraints on $\\Omega_\\phi$ at tem","authors_text":"Alessandro Melchiorri, Rachel Bean, Steen H. Hansen","cross_cats":["hep-ph"],"headline":"","license":"","primary_cat":"astro-ph","submitted_at":"2001-04-10T20:56:53Z","title":"Early-universe constraints on a Primordial Scaling Field"},"references":{"count":0,"internal_anchors":0,"resolved_work":0,"sample":[],"snapshot_sha256":"258153158e38e3291e3d48162225fcdb2d5a3ed65a07baac614ab91432fd4f57"},"source":{"id":"astro-ph/0104162","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":"sha256:1be5f579469a5cf3fdf1a62232027b7c72e0a42365b77af2f58eae0eabaa317d","target":"record","created_at":"2026-05-18T02:40:36Z","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":"87c3f323ca6da841cf6cae3c39f7354b24d2145b9ccdcf96c90446f32f90cc97","cross_cats_sorted":["hep-ph"],"license":"","primary_cat":"astro-ph","submitted_at":"2001-04-10T20:56:53Z","title_canon_sha256":"be1e166c09bad1b6979b25ae8af59ccb0b8b9ac29e913b27cacbcef6bc580202"},"schema_version":"1.0","source":{"id":"astro-ph/0104162","kind":"arxiv","version":2}},"canonical_sha256":"fc78ecb835f3b843613507dd51900ce320f5d78708a9150ae7edc93279412ac0","receipt":{"algorithm":"ed25519","builder_version":"pith-number-builder-2026-05-17-v1","canonical_sha256":"fc78ecb835f3b843613507dd51900ce320f5d78708a9150ae7edc93279412ac0","first_computed_at":"2026-05-18T02:40:36.450893Z","key_id":"pith-v1-2026-05","kind":"pith_receipt","last_reissued_at":"2026-05-18T02:40:36.450893Z","public_key_fingerprint":"8d4b5ee74e4693bcd1df2446408b0d54","receipt_version":"0.3","signature_b64":"qVTsd2d4ZkYXK3SCeafVxeoa2iKsxtqJkq6UXqN+pY5quvQicLRPpCSVnHNT4MLpFxSLAPPc30TDRzgVoRi4DA==","signature_status":"signed_v1","signed_at":"2026-05-18T02:40:36.451531Z","signed_message":"canonical_sha256_bytes"},"source_id":"astro-ph/0104162","source_kind":"arxiv","source_version":2}}},"equivocations":[],"invalid_events":[],"applied_event_ids":["sha256:1be5f579469a5cf3fdf1a62232027b7c72e0a42365b77af2f58eae0eabaa317d","sha256:d629f72c2c1bcea8e884f62401282369fed60ced741142d5ce797ca9ff8ba524"],"state_sha256":"aebd4428e855615f863a6dc58f1c1141623dccdf6e1c1afdb074169ea1cecccc"},"bundle_signature":{"signature_status":"signed_v1","algorithm":"ed25519","key_id":"pith-v1-2026-05","public_key_fingerprint":"8d4b5ee74e4693bcd1df2446408b0d54","signature_b64":"we1Cjrn5sU+9nBMC0CA7wpXVa3Vqv8vY4YEx8BKphBya+XslSXDmdbpx/DlFU+PjYuU4JwPSKQnizViLXRdyDA==","signed_message":"bundle_sha256_bytes","signed_at":"2026-05-31T16:28:45.752123Z","bundle_sha256":"848bd3a8a1331cc2d3fa95e4d9baf7b41bff827b5d7407fb1a09fe113a3cb134"}}