{
  "format": "igneum-program-pack-3",
  "generator": 2,
  "attempt": 0,
  "program_id": "0xbcc1248b10cc90f2",
  "program_id_derivation": "FNV-1a 64 over 'igneum-program/' || generator_le32 || seed_words as little-endian bytes || attempt_le32",
  "dataset_mode": "memory-hard",
  "seed": "igneum-genesis",
  "seed_bytes": "69676e65756d2d67656e65736973",
  "seed_words": ["0x67a9a7be", "0x1a155b25", "0xfddfb732", "0x4b5af2e8", "0xc55caf33", "0xa27c13b7", "0x06628a48", "0x03852469"],
  "seed_derivation": "seed_words = FNV-1a 64 over seed_bytes (attempt 0) or seed_bytes || attempt_le32 (attempt k >= 1), basis ^ (salt * 0x9E3779B97F4A7C15) for salt 0..3, then h ^= h>>33; h *= 0xff51afd7ed558ccd; h ^= h>>33; words[2*salt] = low 32, words[2*salt+1] = high 32",
  "generator_rule": "version 2: exactly 16 load slots drawn first from instructions 1..63 (partial Fisher-Yates), the other 48 ops from the ten non-load weights (sum 75); a load's source is drawn from the registers other than dst written by an earlier instruction and not read by a load since; the candidate must pass the acceptance rule of spec 01 section 1.4.6 (static: no cyclically stale load source, every register has an injecting write; dynamic: 64 units on the seed-keyed closed-form dataset with no constant register bit, no lane-constant load site, under 164 saturated final values, every output bit within 136 of 1024, distinct addresses above 245760), else the next attempt of the seed is tried",
  "lanes": 32,
  "registers": 8,
  "iterations": 8,
  "instruction_count": 64,
  "loads_per_hash": 128,
  "op_mix": {"load": 16, "add": 8, "shfl": 8, "xor": 6, "mad": 5, "mul": 5, "mulhi": 5, "sub": 4, "rotl": 3, "rotr": 3, "or": 1},
  "register_init": "for i in 0..7: x = nonce ^ seed_words[i]; x += 0x9e3779b9 * (i+1) (mod 2^32); x = splitmix32(x); r[i] = x ^ seed_words[(i+1) & 7]",
  "splitmix32": "x ^= x>>16; x *= 0x7feb352d; x ^= x>>15; x *= 0x846ca68b; x ^= x>>16",
  "iteration": "sel = r0 sampled once at the top of each iteration, then all instructions in order",
  "output": "lo = r0 ^ rotl(r1,7) ^ rotl(r2,14) ^ rotl(r3,21); hi = r4 ^ rotl(r5,9) ^ rotl(r6,18) ^ rotl(r7,27); out = (hi << 32) | lo",
  "op_semantics": {
    "add": "dst = dst + src + (bit `bit` of sel ? imm2 : imm)",
    "sub": "dst = dst - src",
    "mul": "dst = dst * src (low 32)",
    "mulhi": "dst = high 32 bits of dst * src",
    "xor": "dst = dst ^ src",
    "or": "dst = dst | src",
    "rotl": "dst = rotl(dst, rot), rot in 1..31",
    "rotr": "dst = rotr(dst, src & 31)",
    "mad": "dst = src * src2 + dst",
    "shfl": "dst = dst ^ (src of lane (lane ^ mask)), mask in {1,2,4,8,16}, within the 32-lane warp",
    "load": "dst = dst ^ dataset[src & dataset.mask]",
    "wload": "base = (src of lane 0 & dataset.mask) & ~31; dst = dst ^ dataset[base + lane] (warp-coalesced 128-byte load, lever b, only when --wide-frac > 0)"
  },
  "dataset": {
    "log2_words": 28,
    "bytes": 1073741824,
    "mask": "0x0fffffff",
    "day": "2026-10-03",
    "day_bytes": "6461792f323032362d31302d3033",
    "day_words_from": "seed_words_from_bytes(day_bytes)",
    "d0": "0x3067619f",
    "d1": "0x3c269176",
    "mode": "memory-hard",
    "spec": "proto-metal/MEMHARD.md",
    "key": ["0x3067619f", "0x3c269176", "0x84a03b03", "0xf8c63294", "0xff977c5b", "0xe60def3e", "0x63630141", "0xb8fbcb58"],
    "key_derivation": "the 8 words of seed_words_from_bytes(day_bytes); d0, d1 are key[0], key[1]",
    "cache": {"log2_words": 26, "bytes": 268435456, "line_words": 16, "segment_lines": 64, "segments": 65536, "block": "ChaCha12 core + feed-forward, rotations 16 12 8 7", "sigma": ["0x61707865", "0x3320646e", "0x79622d32", "0x6b206574"], "tag": ["0x49676e65", "0x756d4d48"], "chain": "in_j = prev_line ^ (sigma[0..3] || key[0..7] || seg || j || tag[0..1]); line_j = block(in_j); prev_0 = 0"},
    "mixer": {"draw": "SplitMix64 seeded with key[0] | key[1] << 32: rot[0..7] = 1 + next() % 31, mul[0..15] = low32(next()) | 1, rc[0..15] = low32(next())", "rot": [20, 20, 19, 4, 26, 3, 3, 27], "mul": ["0x42146205", "0x52cbe0fb", "0x7ecf4a03", "0x6728907f", "0xd81d9751", "0x132952c3", "0xf60de277", "0x05358035", "0xbaf6499d", "0xe4db9667", "0x3e98f45d", "0xd0004edd", "0x2691630d", "0x9beb3bcf", "0xab310379", "0x99cfb423"], "rc": ["0xbab68293", "0xcc162340", "0x6ce151cc", "0xe62b8997", "0xc9c80297", "0xf74a1654", "0x3d704af5", "0x3cf522b7", "0x2b9cac04", "0xa880ac10", "0x13e5dd1d", "0x6fc3e233", "0x2d83eeac", "0x9006e8bf", "0x2c4b5362", "0x31b49ee2"], "round": "for i in 0..15: s[i] = (s[i] ^ (rc[i] + (r+1) * 0x9E3779B9)) * mul[i]; then quarter rounds on columns (0,4,8,12) (1,5,9,13) (2,6,10,14) (3,7,11,15) with rot[0..3] and diagonals (0,5,10,15) (1,6,11,12) (2,7,8,13) (3,4,9,14) with rot[4..7]", "quarter_round": "a += b; d ^= a; d = rotl(d, r1); c += d; b ^= c; b = rotl(b, r2); a += b; d ^= a; d = rotl(d, r3); c += d; b ^= c; b = rotl(b, r4)"},
    "item": "s[0..7] = key; s[8+i] = t * mul[i] + rc[i] for i in 0..7; for r in 0..7: s = M_r(s); line = s[0] & 0x003fffff; s[i] ^= cache[line * 16 + i]; then s = M_8(s); item(t) = s",
    "word": "dataset[w] = item(w >> 4)[w & 15]"
  },
  "instructions": [
    {"i": 0, "op": "mad", "dst": 2, "src": 3, "src2": 4, "imm": "0xbf7b174d", "imm2": "0x337b762e", "rot": 17, "bit": 2, "mask": 2},
    {"i": 1, "op": "mad", "dst": 2, "src": 1, "src2": 1, "imm": "0xdd04a5da", "imm2": "0x42da7657", "rot": 15, "bit": 30, "mask": 16},
    {"i": 2, "op": "mad", "dst": 2, "src": 3, "src2": 2, "imm": "0x734003fa", "imm2": "0x5bb67700", "rot": 3, "bit": 20, "mask": 1},
    {"i": 3, "op": "xor", "dst": 3, "src": 5, "src2": 5, "imm": "0xc55a1b1c", "imm2": "0xa19720f3", "rot": 7, "bit": 8, "mask": 1},
    {"i": 4, "op": "load", "dst": 7, "src": 2, "src2": 5, "imm": "0xad572dd7", "imm2": "0x9ceb3ea7", "rot": 18, "bit": 30, "mask": 2},
    {"i": 5, "op": "load", "dst": 5, "src": 7, "src2": 3, "imm": "0x769a53be", "imm2": "0x80f9067e", "rot": 12, "bit": 22, "mask": 1},
    {"i": 6, "op": "shfl", "dst": 1, "src": 4, "src2": 0, "imm": "0xd3613d88", "imm2": "0x262fb219", "rot": 10, "bit": 30, "mask": 8},
    {"i": 7, "op": "shfl", "dst": 7, "src": 3, "src2": 4, "imm": "0xce38e42f", "imm2": "0xb868b818", "rot": 11, "bit": 8, "mask": 8},
    {"i": 8, "op": "mulhi", "dst": 1, "src": 5, "src2": 2, "imm": "0xa5eebca5", "imm2": "0x5703a72b", "rot": 13, "bit": 13, "mask": 16},
    {"i": 9, "op": "rotr", "dst": 6, "src": 3, "src2": 4, "imm": "0x17a5a9c7", "imm2": "0xdcfb93a1", "rot": 20, "bit": 27, "mask": 2},
    {"i": 10, "op": "or", "dst": 3, "src": 4, "src2": 1, "imm": "0xccb7d785", "imm2": "0xc335364c", "rot": 14, "bit": 12, "mask": 4},
    {"i": 11, "op": "load", "dst": 4, "src": 3, "src2": 2, "imm": "0x88cb9af3", "imm2": "0x4e7dc10d", "rot": 24, "bit": 17, "mask": 4},
    {"i": 12, "op": "mulhi", "dst": 0, "src": 4, "src2": 4, "imm": "0x45374321", "imm2": "0x3cd91989", "rot": 11, "bit": 4, "mask": 2},
    {"i": 13, "op": "add", "dst": 5, "src": 1, "src2": 2, "imm": "0xc7934706", "imm2": "0xd3177981", "rot": 16, "bit": 30, "mask": 2},
    {"i": 14, "op": "load", "dst": 0, "src": 4, "src2": 3, "imm": "0xfd7f56bb", "imm2": "0x65e14f52", "rot": 13, "bit": 22, "mask": 2},
    {"i": 15, "op": "sub", "dst": 2, "src": 4, "src2": 4, "imm": "0x35a80b49", "imm2": "0x060f2d13", "rot": 16, "bit": 20, "mask": 16},
    {"i": 16, "op": "load", "dst": 2, "src": 0, "src2": 2, "imm": "0xae0a32c2", "imm2": "0x4c2a4cfe", "rot": 8, "bit": 31, "mask": 16},
    {"i": 17, "op": "load", "dst": 7, "src": 2, "src2": 6, "imm": "0x82a84cc3", "imm2": "0x21a38d68", "rot": 15, "bit": 21, "mask": 2},
    {"i": 18, "op": "shfl", "dst": 7, "src": 3, "src2": 3, "imm": "0xa3818806", "imm2": "0x8f66b5c8", "rot": 14, "bit": 6, "mask": 4},
    {"i": 19, "op": "mul", "dst": 5, "src": 0, "src2": 1, "imm": "0xa00de107", "imm2": "0x77bfcaa5", "rot": 3, "bit": 10, "mask": 2},
    {"i": 20, "op": "shfl", "dst": 3, "src": 4, "src2": 7, "imm": "0x1d2b8cab", "imm2": "0x80b4f9a2", "rot": 14, "bit": 25, "mask": 2},
    {"i": 21, "op": "shfl", "dst": 2, "src": 4, "src2": 5, "imm": "0x3ac915d2", "imm2": "0x5fba7bc2", "rot": 16, "bit": 1, "mask": 16},
    {"i": 22, "op": "mulhi", "dst": 6, "src": 2, "src2": 0, "imm": "0xdc3ec8fd", "imm2": "0x599e2fa3", "rot": 22, "bit": 3, "mask": 2},
    {"i": 23, "op": "load", "dst": 6, "src": 1, "src2": 5, "imm": "0x2a6b16d5", "imm2": "0xd73e396f", "rot": 28, "bit": 29, "mask": 2},
    {"i": 24, "op": "mul", "dst": 5, "src": 0, "src2": 7, "imm": "0x376d0223", "imm2": "0xe1c2169a", "rot": 4, "bit": 16, "mask": 16},
    {"i": 25, "op": "rotl", "dst": 5, "src": 7, "src2": 3, "imm": "0x78ad8c60", "imm2": "0x6f5b77d5", "rot": 19, "bit": 11, "mask": 16},
    {"i": 26, "op": "shfl", "dst": 7, "src": 6, "src2": 5, "imm": "0x93915b9f", "imm2": "0x1e61fb6b", "rot": 28, "bit": 23, "mask": 2},
    {"i": 27, "op": "xor", "dst": 0, "src": 5, "src2": 7, "imm": "0x6378fe15", "imm2": "0x66c78f42", "rot": 12, "bit": 31, "mask": 8},
    {"i": 28, "op": "xor", "dst": 0, "src": 4, "src2": 7, "imm": "0x20a57fda", "imm2": "0x088c848e", "rot": 16, "bit": 13, "mask": 4},
    {"i": 29, "op": "sub", "dst": 3, "src": 0, "src2": 2, "imm": "0x49d95fd5", "imm2": "0x1a5f946a", "rot": 6, "bit": 12, "mask": 1},
    {"i": 30, "op": "mul", "dst": 5, "src": 1, "src2": 7, "imm": "0x0a816217", "imm2": "0x405c4f73", "rot": 13, "bit": 27, "mask": 4},
    {"i": 31, "op": "load", "dst": 7, "src": 2, "src2": 2, "imm": "0x09ed045e", "imm2": "0xd69c4715", "rot": 5, "bit": 9, "mask": 2},
    {"i": 32, "op": "load", "dst": 1, "src": 0, "src2": 6, "imm": "0xeb79ea49", "imm2": "0xcc587f5a", "rot": 6, "bit": 8, "mask": 16},
    {"i": 33, "op": "xor", "dst": 5, "src": 6, "src2": 1, "imm": "0x3027401e", "imm2": "0x5f20c27e", "rot": 18, "bit": 9, "mask": 2},
    {"i": 34, "op": "load", "dst": 5, "src": 1, "src2": 3, "imm": "0x0e1cab07", "imm2": "0x09356c5b", "rot": 19, "bit": 31, "mask": 1},
    {"i": 35, "op": "mulhi", "dst": 0, "src": 5, "src2": 2, "imm": "0x90e31357", "imm2": "0xabd32484", "rot": 26, "bit": 5, "mask": 8},
    {"i": 36, "op": "shfl", "dst": 5, "src": 2, "src2": 5, "imm": "0xee9a955f", "imm2": "0x31b3faed", "rot": 8, "bit": 24, "mask": 4},
    {"i": 37, "op": "load", "dst": 7, "src": 0, "src2": 7, "imm": "0x3ba2f832", "imm2": "0x1160dcd3", "rot": 4, "bit": 29, "mask": 1},
    {"i": 38, "op": "add", "dst": 3, "src": 1, "src2": 7, "imm": "0x75ba2fad", "imm2": "0x230c005c", "rot": 4, "bit": 27, "mask": 1},
    {"i": 39, "op": "shfl", "dst": 1, "src": 5, "src2": 3, "imm": "0xdbf37e75", "imm2": "0xb5ac1969", "rot": 30, "bit": 13, "mask": 4},
    {"i": 40, "op": "xor", "dst": 2, "src": 5, "src2": 5, "imm": "0x47f136c5", "imm2": "0x06ce9153", "rot": 19, "bit": 10, "mask": 2},
    {"i": 41, "op": "mad", "dst": 3, "src": 6, "src2": 3, "imm": "0xce13eff8", "imm2": "0x04cc1d55", "rot": 3, "bit": 1, "mask": 4},
    {"i": 42, "op": "sub", "dst": 6, "src": 7, "src2": 1, "imm": "0x6a65ab71", "imm2": "0x8fbc1bcd", "rot": 4, "bit": 1, "mask": 8},
    {"i": 43, "op": "xor", "dst": 7, "src": 0, "src2": 7, "imm": "0xdaeb4928", "imm2": "0xc0423027", "rot": 24, "bit": 11, "mask": 8},
    {"i": 44, "op": "load", "dst": 1, "src": 7, "src2": 7, "imm": "0x778f01c9", "imm2": "0x28cedcea", "rot": 12, "bit": 4, "mask": 16},
    {"i": 45, "op": "mul", "dst": 2, "src": 3, "src2": 2, "imm": "0xf4264f1b", "imm2": "0x0f627d56", "rot": 5, "bit": 28, "mask": 8},
    {"i": 46, "op": "mulhi", "dst": 1, "src": 5, "src2": 1, "imm": "0xffb2147a", "imm2": "0xccde9b05", "rot": 13, "bit": 9, "mask": 2},
    {"i": 47, "op": "sub", "dst": 4, "src": 3, "src2": 5, "imm": "0x73b36234", "imm2": "0x3f5d5997", "rot": 7, "bit": 18, "mask": 2},
    {"i": 48, "op": "rotr", "dst": 2, "src": 6, "src2": 3, "imm": "0x3a4d9aa9", "imm2": "0x212bec7b", "rot": 4, "bit": 29, "mask": 16},
    {"i": 49, "op": "load", "dst": 3, "src": 5, "src2": 2, "imm": "0x626f11df", "imm2": "0x56cd5bfd", "rot": 7, "bit": 1, "mask": 1},
    {"i": 50, "op": "add", "dst": 1, "src": 5, "src2": 6, "imm": "0x81b8bc2c", "imm2": "0x1907970c", "rot": 28, "bit": 7, "mask": 4},
    {"i": 51, "op": "mul", "dst": 0, "src": 2, "src2": 2, "imm": "0xa8848b30", "imm2": "0xef6ac348", "rot": 9, "bit": 15, "mask": 8},
    {"i": 52, "op": "add", "dst": 0, "src": 2, "src2": 0, "imm": "0x4f92b968", "imm2": "0x699fd448", "rot": 22, "bit": 6, "mask": 4},
    {"i": 53, "op": "add", "dst": 1, "src": 0, "src2": 2, "imm": "0x2bb965af", "imm2": "0x77b1520d", "rot": 2, "bit": 12, "mask": 8},
    {"i": 54, "op": "rotl", "dst": 7, "src": 1, "src2": 0, "imm": "0x553e678b", "imm2": "0x3cc8eae0", "rot": 14, "bit": 20, "mask": 2},
    {"i": 55, "op": "add", "dst": 3, "src": 7, "src2": 2, "imm": "0x7b0fe07a", "imm2": "0xa54c55a0", "rot": 10, "bit": 1, "mask": 1},
    {"i": 56, "op": "load", "dst": 6, "src": 7, "src2": 4, "imm": "0x01eba9aa", "imm2": "0x2758c0f7", "rot": 14, "bit": 15, "mask": 4},
    {"i": 57, "op": "rotr", "dst": 1, "src": 5, "src2": 2, "imm": "0x1f5267b3", "imm2": "0x236f5a27", "rot": 2, "bit": 31, "mask": 16},
    {"i": 58, "op": "load", "dst": 5, "src": 4, "src2": 3, "imm": "0xa9954a9b", "imm2": "0x6a54d4e8", "rot": 11, "bit": 10, "mask": 16},
    {"i": 59, "op": "load", "dst": 6, "src": 2, "src2": 4, "imm": "0x9923ff88", "imm2": "0x9357254e", "rot": 16, "bit": 1, "mask": 16},
    {"i": 60, "op": "mad", "dst": 3, "src": 5, "src2": 0, "imm": "0xc0cc51a6", "imm2": "0x3fd7701b", "rot": 20, "bit": 1, "mask": 4},
    {"i": 61, "op": "add", "dst": 5, "src": 7, "src2": 7, "imm": "0xaf9dd72d", "imm2": "0xad7493e7", "rot": 7, "bit": 31, "mask": 16},
    {"i": 62, "op": "add", "dst": 4, "src": 6, "src2": 2, "imm": "0x89841d87", "imm2": "0x1e07c3d9", "rot": 6, "bit": 27, "mask": 1},
    {"i": 63, "op": "rotl", "dst": 5, "src": 4, "src2": 2, "imm": "0xae210f8d", "imm2": "0x8e499ba4", "rot": 19, "bit": 9, "mask": 1}
  ]
}