{"record_type":"pith_number_record","schema_url":"https://pith.science/schemas/pith-number/v1.json","pith_number":"pith:2013:V5IP2TUJSNLT3VVFDJ7C6CAKUS","short_pith_number":"pith:V5IP2TUJ","schema_version":"1.0","canonical_sha256":"af50fd4e8993573dd6a51a7e2f080aa4ab7354e13a11ff862778dbc1baea7b15","source":{"kind":"arxiv","id":"1312.0613","version":3},"attestation_state":"computed","paper":{"title":"The Habitable Epoch of the Early Universe","license":"http://arxiv.org/licenses/nonexclusive-distrib/1.0/","headline":"","cross_cats":["astro-ph.EP","gr-qc","hep-ph","hep-th"],"primary_cat":"astro-ph.CO","authors_text":"Abraham Loeb (Harvard)","submitted_at":"2013-12-02T21:00:18Z","abstract_excerpt":"In the redshift range 100<(1+z)<137, the cosmic microwave background (CMB) had a temperature of 273-373K (0-100 degrees Celsius), allowing early rocky planets (if any existed) to have liquid water chemistry on their surface and be habitable, irrespective of their distance from a star. In the standard LCDM cosmology, the first star-forming halos within our Hubble volume started collapsing at these redshifts, allowing the chemistry of life to possibly begin when the Universe was merely 10-17 million years old. The possibility of life starting when the average matter density was a million times b"},"verification_status":{"content_addressed":true,"pith_receipt":true,"author_attested":false,"weak_author_claims":0,"strong_author_claims":0,"externally_anchored":false,"storage_verified":false,"citation_signatures":0,"replication_records":0,"graph_snapshot":true,"references_resolved":false,"formal_links_present":false},"canonical_record":{"source":{"id":"1312.0613","kind":"arxiv","version":3},"metadata":{"license":"http://arxiv.org/licenses/nonexclusive-distrib/1.0/","primary_cat":"astro-ph.CO","submitted_at":"2013-12-02T21:00:18Z","cross_cats_sorted":["astro-ph.EP","gr-qc","hep-ph","hep-th"],"title_canon_sha256":"f7c966b9cb46b3dc7c8f00abaaedc052c9e02a763d4d227104d1640a9dcafe7d","abstract_canon_sha256":"8c903e46dd1c985c21bd8981814bbc2d9e093abb3d599dfae1fafdfa88bc6cfc"},"schema_version":"1.0"},"receipt":{"kind":"pith_receipt","key_id":"pith-v1-2026-05","algorithm":"ed25519","signed_at":"2026-05-18T01:45:59.628022Z","signature_b64":"Uao2z6XPEZEaPoCAkfrJebVgQLFNEp/OAYEtVPkxIJ5KDfFNkS8HWev8MqyJpnqwz6cVpPw22eEpU61w/kqmAA==","signed_message":"canonical_sha256_bytes","builder_version":"pith-number-builder-2026-05-17-v1","receipt_version":"0.3","canonical_sha256":"af50fd4e8993573dd6a51a7e2f080aa4ab7354e13a11ff862778dbc1baea7b15","last_reissued_at":"2026-05-18T01:45:59.627304Z","signature_status":"signed_v1","first_computed_at":"2026-05-18T01:45:59.627304Z","public_key_fingerprint":"8d4b5ee74e4693bcd1df2446408b0d54"},"graph_snapshot":{"paper":{"title":"The Habitable Epoch of the Early Universe","license":"http://arxiv.org/licenses/nonexclusive-distrib/1.0/","headline":"","cross_cats":["astro-ph.EP","gr-qc","hep-ph","hep-th"],"primary_cat":"astro-ph.CO","authors_text":"Abraham Loeb (Harvard)","submitted_at":"2013-12-02T21:00:18Z","abstract_excerpt":"In the redshift range 100<(1+z)<137, the cosmic microwave background (CMB) had a temperature of 273-373K (0-100 degrees Celsius), allowing early rocky planets (if any existed) to have liquid water chemistry on their surface and be habitable, irrespective of their distance from a star. In the standard LCDM cosmology, the first star-forming halos within our Hubble volume started collapsing at these redshifts, allowing the chemistry of life to possibly begin when the Universe was merely 10-17 million years old. The possibility of life starting when the average matter density was a million times b"},"claims":{"count":0,"items":[],"snapshot_sha256":"258153158e38e3291e3d48162225fcdb2d5a3ed65a07baac614ab91432fd4f57"},"source":{"id":"1312.0613","kind":"arxiv","version":3},"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"},"aliases":[{"alias_kind":"arxiv","alias_value":"1312.0613","created_at":"2026-05-18T01:45:59.627439+00:00"},{"alias_kind":"arxiv_version","alias_value":"1312.0613v3","created_at":"2026-05-18T01:45:59.627439+00:00"},{"alias_kind":"doi","alias_value":"10.48550/arxiv.1312.0613","created_at":"2026-05-18T01:45:59.627439+00:00"},{"alias_kind":"pith_short_12","alias_value":"V5IP2TUJSNLT","created_at":"2026-05-18T12:28:04.890932+00:00"},{"alias_kind":"pith_short_16","alias_value":"V5IP2TUJSNLT3VVF","created_at":"2026-05-18T12:28:04.890932+00:00"},{"alias_kind":"pith_short_8","alias_value":"V5IP2TUJ","created_at":"2026-05-18T12:28:04.890932+00:00"}],"events":[],"event_summary":{},"paper_claims":[],"inbound_citations":{"count":0,"internal_anchor_count":0,"sample":[]},"formal_canon":{"evidence_count":0,"sample":[],"anchors":[]},"links":{"html":"https://pith.science/pith/V5IP2TUJSNLT3VVFDJ7C6CAKUS","json":"https://pith.science/pith/V5IP2TUJSNLT3VVFDJ7C6CAKUS.json","graph_json":"https://pith.science/api/pith-number/V5IP2TUJSNLT3VVFDJ7C6CAKUS/graph.json","events_json":"https://pith.science/api/pith-number/V5IP2TUJSNLT3VVFDJ7C6CAKUS/events.json","paper":"https://pith.science/paper/V5IP2TUJ"},"agent_actions":{"view_html":"https://pith.science/pith/V5IP2TUJSNLT3VVFDJ7C6CAKUS","download_json":"https://pith.science/pith/V5IP2TUJSNLT3VVFDJ7C6CAKUS.json","view_paper":"https://pith.science/paper/V5IP2TUJ","resolve_alias":"https://pith.science/api/pith-number/resolve?arxiv=1312.0613&json=true","fetch_graph":"https://pith.science/api/pith-number/V5IP2TUJSNLT3VVFDJ7C6CAKUS/graph.json","fetch_events":"https://pith.science/api/pith-number/V5IP2TUJSNLT3VVFDJ7C6CAKUS/events.json","actions":{"anchor_timestamp":"https://pith.science/pith/V5IP2TUJSNLT3VVFDJ7C6CAKUS/action/timestamp_anchor","attest_storage":"https://pith.science/pith/V5IP2TUJSNLT3VVFDJ7C6CAKUS/action/storage_attestation","attest_author":"https://pith.science/pith/V5IP2TUJSNLT3VVFDJ7C6CAKUS/action/author_attestation","sign_citation":"https://pith.science/pith/V5IP2TUJSNLT3VVFDJ7C6CAKUS/action/citation_signature","submit_replication":"https://pith.science/pith/V5IP2TUJSNLT3VVFDJ7C6CAKUS/action/replication_record"}},"created_at":"2026-05-18T01:45:59.627439+00:00","updated_at":"2026-05-18T01:45:59.627439+00:00"}