{"algorithm":{"draw_algorithm_version":"winner-selector-v1","rng_version":"drng-v1","seed_derivation":"HKDF-SHA256(ikm=beacon_randomness, salt=SHA256(\"richbrook/draw/normal-draw-v1\"), info=\"normal-draw-v1|\"+competition_public_id+\"|\"+snapshot_sha256)","selection":"DeterministicRngV1(seed).nextInt(row_count) by rejection sampling; the winner is the snapshot row at that zero-based index."},"audit":{"chain_version":"audit-chain-v1","head_event_hash":"22502f45761f4572c0da5c3c6c8756e87aee4d3fcb4598d5096fb20ce97fb6ef"},"canonical_json_version":"canonical-json-v1","competition":{"closed_at":"2026-10-25T21:47:15Z","closes_at":"2026-10-25T21:47:00Z","jurisdiction":"GB","public_id":"01M5TEJQFCVD5M9HNWNQG4VV7Q","title":"Staging 25 Oct 21:13 — Auto","total_tickets":60},"format_version":"receipt-v1","mechanism":{"jurisdiction_policy_version":"jurisdiction-policy-2026-08-15","summary":"One winning ticket, drawn from a public randomness beacon nobody controls.","terms_hash":"83eadf544b9e20af93e428901b44ef441c0a39bf4d824309e31bba56afe7a795","terms_version":"2026-10"},"randomness":{"chain_id":"52db9ba70e0cc0f6eaf7803dd07447a1f5477735fd3f661792ba94600c84e971","chain_public_key":"83cf0f2896adee7eb8b5f01fcad3912212c437e0073e911fb90022d3e760183c8c4b450b6a0a6c3ac6a5776a2d1064510d1fec758c921cc22b0e17e63aaf4bcb5ed66304de9cf809bd274ca73bab4af5a6e9c76a4bc09e76eae8991ef5ece45a","previous_signature":null,"provider":"drand","randomness":"95474b3a6f2efab5a7ff15603980461fcf6de3c1e3e891a9a82be1d2146bee79","raw_response_hash":"ab95caf2808380e4fbaaba7f873b219f822e8c5a6d35a150c4556e36e363c0cf","round":33387193,"scheme_id":"bls-unchained-g1-rfc9380","signature":"888419f51decb764555c5515011fbb3ec4d908d65cb2ac058b442d76e2ccccb221021fde96b92ebd533717efd75e335b","verified_at":"2026-10-25T21:49:06Z","verified_by":"pure-php-bls12-381"},"result":{"executed_at":"2026-10-25T21:49:07Z","max_selection_attempts":10000,"seed_hash":"9e031f3f08f5b7dfb905bcd422349fc57132d3d949df6d6642c34a476aaaefbb","selection_attempts":[7],"selection_mode":"full_range_rejection","selection_range_end":60,"selection_range_start":1,"winner_entry_public_id":"01M5TEQFEVJ4YF3S9ZKVF63CKQ","winning_index":null,"winning_ticket_number":7},"snapshot":{"anchor":{"anchored_at":"2026-10-25T21:47:17Z","external_reference":"anchors/rfc3161/draw_snapshot-4d857616da2471d35fead1be6dc6d8af6ee774302becd2e69a1b03cb77a3ee09.tsr","provider":"rfc3161","sha256":"4d857616da2471d35fead1be6dc6d8af6ee774302becd2e69a1b03cb77a3ee09"},"built_at":"2026-10-25T21:47:17Z","byte_size":1641,"format_version":"snapshot-v1","row_count":55,"sha256":"4d857616da2471d35fead1be6dc6d8af6ee774302becd2e69a1b03cb77a3ee09"}}