Signed attestation

{
  "alg": "Ed25519",
  "amount": "1342.78",
  "attested_at": "2026-08-27T03:55:00Z",
  "attested_at_caveat": "self-asserted attestation time — not independently timestamped, not a claim of temporal precedence",
  "block": "25841885",
  "block_time": "2026-08-26 20:50:11+00",
  "chain": "gold",
  "disclaimer": "The transaction fact (txid, amount, block, addresses) is independently verifiable on-chain. flow_type and entity labels are Swiss Whale Intelligence interpretations, not on-chain facts. This Ed25519 signature attests authorship by Swiss Whale Intelligence, not the correctness of the interpretation.",
  "entities": {
    "from": {
      "proof_url": "https://static.okx.com/cdn/okx/por/chain/por_csv_2026050700_V2.zip",
      "source": "por_okx",
      "source_human": "OKX Proof-of-Reserves, signature-verified",
      "tier": 1,
      "verified_at": "2026-05-31"
    },
    "to": {
      "proof_url": "https://static.okx.com/cdn/okx/por/chain/por_csv_2026050700_V2.zip",
      "source": "por_okx",
      "source_human": "OKX Proof-of-Reserves, signature-verified",
      "tier": 1,
      "verified_at": "2026-05-31"
    }
  },
  "flow_type": "to_exchange",
  "from_address": "0x91d40e4818f4d4c57b4578d9eca6afc92ac8debe",
  "key_id": "swi-ed25519-8a0381c77bc3f06c",
  "methodology": {
    "whitepaper_sha256": "55ed9f0d6dbaf609a482a5941e53be8f08bc3891920e0b2e5928ac142f716326",
    "whitepaper_version": "v1"
  },
  "schema": "swi-attest/1",
  "to_address": "0x073f564419b625a45d8aea3bb0de4d5647113ad7",
  "txid": "0x94801d9abd2df376fe9724b55c2f3f004998cf21225c0aeaba465292ce544dca",
  "unit": "oz PAXG",
  "usd_at_tx": "6160271.81"
}