Turn any hash into a signed, Bitcoin-anchored proof of existence.

import hashlib, requests

# 1) hash your data locally — only the digest is ever sent
data = b"invoice #4471 — A$12,400 — 2026-06-14"
digest = hashlib.sha256(data).hexdigest()

# 2) anchor the digest (hashes only, keyless)
r = requests.post("https://dynamicfeed.ai/v1/anchor",
                  json={"digest_hex": digest}, timeout=30)
proof = r.json()
print(proof["status"])          # "pending"
ots = proof["proof_ots_b64"]      # save this — it IS your proof

# (Alternatively, hand us a snapshot and we hash it canonically:)
# requests.post(URL, json={"snapshot": {"gauge": "river-7", "level_m": 2.41}})

# 3) ~1 block later, upgrade to the Bitcoin block attestation
up = requests.post("https://dynamicfeed.ai/v1/anchor/upgrade",
                   json={"proof_ots_b64": ots}, timeout=40).json()
print(up["status"], up.get("bitcoin_block_height"))

import { createHash } from "node:crypto";

// 1) hash your data locally — only the digest leaves your machine
const data = "invoice #4471 — A$12,400 — 2026-06-14";
const digest = createHash("sha256").update(data).digest("hex");

// 2) anchor the digest (hashes only, keyless)
const res = await fetch("https://dynamicfeed.ai/v1/anchor", {
  method: "POST",
  headers: { "Content-Type": "application/json" },
  body: JSON.stringify({ digest_hex: digest }),
});
const proof = await res.json();
console.log(proof.status);             // "pending"
const ots = proof.proof_ots_b64;       // save this — it IS your proof

// (Or send a snapshot and we compute its canonical SHA-256:)
// body: JSON.stringify({ snapshot: { gauge: "river-7", level_m: 2.41 } })

// 3) ~1 block later, upgrade to the Bitcoin block attestation
const up = await fetch("https://dynamicfeed.ai/v1/anchor/upgrade", {
  method: "POST",
  headers: { "Content-Type": "application/json" },
  body: JSON.stringify({ proof_ots_b64: ots }),
}).then(r => r.json());
console.log(up.status, up.bitcoin_block_height);