{"_canonicalization":{"envelope_id":"axm_ + sha256(envelope minus {signature, axiom_id, anchors})","envelope_signature":"ed25519(envelope minus {signature, axiom_id})","json":"sort_keys=True, separators=(',',':'), ensure_ascii=False, allow_nan=False, utf-8","leaf_hash":"sha256(0x00 || canonical_json(envelope_full))","seal_signature":"ed25519(seal minus {signature, sig_algorithm})"},"axiom_id":"axm_a7cbbad56bc86df76fde22eca5fb23b3ca5aac424ea25f1fd26489008724018c","bitcoin_anchor":{"bitcoin_attestations":["bitcoin_block_949451"],"calendar_attestations":["https://finney.calendar.eternitywall.com","https://btc.calendar.catallaxy.com","https://alice.btc.calendar.opentimestamps.org","https://bob.btc.calendar.opentimestamps.org"],"ots_url":"/registry/data/substrate/anchors/77fc9c28fae777b81da5b495b3115474df6592dfac590333213d3bdf8b94a9b3.ots","stamped_at":"2026-05-15T03:00:03Z","status":"bitcoin"},"envelope":{"anchors":[{"chain":"crovia.axiom_graph","height":0,"merkle_proof":"31e56c70c3fd344ee117c6d74d9024feb4ff911108a02d718b6a55fe2cfca023","root_at_anchor":"31e56c70c3fd344ee117c6d74d9024feb4ff911108a02d718b6a55fe2cfca023"}],"axiom_id":"axm_a7cbbad56bc86df76fde22eca5fb23b3ca5aac424ea25f1fd26489008724018c","axiom_type":"AX.OBS","body":{"collector_run_at":"2026-04-26T17:52:16Z","collector_run_id":"wb_441718751c8e43e2","collector_version":"1.0.0","evidence":{"captured_by":"archive.org","memento_rel":"memento","original_url":"https://huggingface.co/cambridgeltl/SapBERT-from-PubMedBERT-fulltext","wayback_timestamp_14":"20221124013322","wayback_url":"https://web.archive.org/web/20221124013322/http://huggingface.co/cambridgeltl/SapBERT-from-PubMedBERT-fulltext"},"observation_type":"presence","observed_at":"2022-11-24T01:33:22Z","receipt_hash":"sha256:05e6c7b09f71eb453577b9b7dd84a9ef05bfc43b637a19a618b83f7e8eb49fe2"},"confidence":{"method":"deterministic"},"decision":"POSITIVE","issued_at":"2022-11-24T01:33:22Z","object":{"captured_by":"archive.org","primary_source_url":"https://web.archive.org/web/20221124013322/http://huggingface.co/cambridgeltl/SapBERT-from-PubMedBERT-fulltext"},"predecessors":[],"schema":"crovia.axiom.v1","signature":"ed25519:0a36b495d3c9a7e44899bae857dae8605a6def86b4702b99b9d647c1fdcdcdf92fffad5902b37c6d284faa5a2ba81c6cb550ceb3b6f82c003c2c9d09d541dc08","signer":"crovia.substrate","subject":{"source_collector":"wayback_hf_collector","target_id":"cambridgeltl/SapBERT-from-PubMedBERT-fulltext"},"tsa":{"authority":"crovia.substrate.bootstrap","rfc3161_token":"{\"kind\":\"crovia.bootstrap.tsa\",\"source_jsonl\":\"/opt/crovia/private/wayback/observations.jsonl\",\"source_seal_merkle_root\":\"31e56c70c3fd344ee117c6d74d9024feb4ff911108a02d718b6a55fe2cfca023\",\"upgrade_path\":\"Sessione H \\u2014 OpenTimestamps weekly anchor\"}"},"zk_mode":"clear","zk_proof":null},"ledger":{"leaf_hash":"7edd8142ef049fc125e21504209d4eaf29baa97fa9e0f377716d02ecd0439bc2","leaf_index":96,"ledger_path":"/opt/crovia/substrate/axiom_ledger.jsonl"},"merkle_proof":{"hash_alg":"sha256","leaf_prefix":"0x00","node_prefix":"0x01","odd_leaf_rule":"duplicate_last","path":[{"sibling":"6e91d9fb4d67bd39ad41b50b3cdabadc296122e7144a4b6874a13cbb9bba7637","side":"right"},{"sibling":"d06680c334789925155d73da11caba7217fb241753f6d31c7ae10fa94b25d1e8","side":"right"},{"sibling":"2cacf8b3d3b5bb3d1a4adb7dcf48410eaea18528cae0316d992159051ebd6b4e","side":"right"},{"sibling":"9b4b0b2328a7cfe49c18a0968aeadfe8f1d89163cb3dceec04d231a94d0a5a91","side":"right"},{"sibling":"fa58290fd2ed83ad8200c0eb6782dd49fe9589a04ee91372325e5b7aa9350ba8","side":"right"},{"sibling":"a96299a8adbe68b1a70e3d19919eebd15230d448eb1b288ecdd0170395d1dd1e","side":"left"},{"sibling":"721c52d7f9cfa65f46aa204f5289cd162dbd4409ac4dfc2cb393b5feaea9622a","side":"left"},{"sibling":"f082a1297c6105b176b65ca9199812af54fdbdaca7aad133f679e04609a5d587","side":"right"},{"sibling":"155cdbd617fe05b14d47018aa6714d6df2c00b898def99e6d09bfca504a0027a","side":"right"},{"sibling":"a6065a4fb6e293516eb4fa4f6910b0089b9b6f082773d0a0d0267055375361ca","side":"right"},{"sibling":"f846f12111512873af428f9aad8e356cba278a32d612fd70efb011aa46285907","side":"right"},{"sibling":"623535fc89f53ad08717073be84e8c2bb72ec74d16c1a59664cedcd566d42733","side":"right"},{"sibling":"d9f4787321cb2f66843893e927c7b365218e8b83a8547e752a589dc1146d5584","side":"right"},{"sibling":"726a39776c18e1b1059ddafb85fca25a64a50da3965a9327bd5890bb94829d34","side":"right"},{"sibling":"6851cc5038d4bb734cf48506a6e1655137e1f089817a44d9732da91812c537ad","side":"right"},{"sibling":"b2c325206b89124ba24d2e31ea7d540b6b4614663ea96edf7c615e7cab2d5bf1","side":"right"},{"sibling":"cc0e8d14567fc276aaffc2d1dc980dc8c5f78207f8e67d1a44382c24dfe0c665","side":"right"},{"sibling":"98fc57dfef8873b512edc8340f7181df57302bb96777625e072235c62d7c5895","side":"right"}]},"schema":"crovia.axiom_proof.v1","seal":{"first_collector_run_id":"","first_receipt_hash":"","jsonl_path":"/opt/crovia/substrate/axiom_ledger.jsonl","key_id":"430895f101d38164","last_collector_run_id":"","last_receipt_hash":"","leaf_count":134292,"merkle_root":"77fc9c28fae777b81da5b495b3115474df6592dfac590333213d3bdf8b94a9b3","public_key_hex":"cf742e26f75669dc673cb5c0786a1ae23ae8ca19c347317192ce40c28a7ff25c","run_id":"hourly_json_retrofit_20260515T023701Z","schema":"crovia.seal.v1","seal_family_version":"crovia-seal-family/1","seal_kind":"substrate_batch","sealed_at":"2026-05-15T02:37:25Z","sig_algorithm":"ed25519","signature":"68107a834b00b24f5d4501e5ec727445311f132a486567ecc4c72a4e6dff24c8c21f2de3105293353ba5fdbe370d032819af6aa70f694e2e39b6af6737507009","signer_version":"1.1.0"},"trust_root":{"key_id":"430895f101d38164","public_key_hex":"cf742e26f75669dc673cb5c0786a1ae23ae8ca19c347317192ce40c28a7ff25c","signature_algorithm":"ed25519","url":"/registry/canon/TRUST_ROOT.md"},"verifier":{"spec":"/registry/canon/AXIOM_RECEIPT_v1.md","url":"/v/axm_a7cbbad56bc86df76fde22eca5fb23b3ca5aac424ea25f1fd26489008724018c"}}