May 2019

echo e171367ca589c056589c5a837b5f79b3aea61d947b5dccd5 | bx hd-new | bx hd-public | bx hd-to-ec | bx ec-to-address

$ echo e171367ca589c056589c5a837b5f79b3aea61d947b5dccd5 | bx hd-new -v 70615956 | bx hd-public | bx hd-to-ec | bx ec-to-address
Error: the argument ('ERROR_VERSION') is invalid
Error: the argument is invalid

$ echo e171367ca589c056589c5a837b5f79b3aea61d947b5dccd5 | bx hd-new --version 70617039 
tpubD6NzVbkrYhZ4WVyJejvGGNMQ22hjnaJAjJJhb2TPkwWNgek3fY5CLfqF5rVZ8XH4kdVeQaZHv66NegB8nArXhnXJkyCX29w2RWC45PCwJWn

tpubDBAE2dXw4Sxt4JJQheSzdEzoozchwRmScq9FXLEAHLj4spM2YTi9BXQmiRcDac2pJfequB8UbLJaAUc3f8iiia2hr9ac2sKckvZURtomCxs

#include <bitcoin/system.hpp>

const std::string master_chain_code = "tpubD6NzVbkrYhZ4WmUsVtDM62qG5zPPbAApWqc9nsqT6sYAcDvs1MtVSHG8otsqy45G33nmaBHe4TWNpuQZk3sLX19rfRsYoKmirQuWbuL6TED";

std::string get_address(uint32_t user_id, uint32_t chain_index)
{
    bc::system::wallet::hd_public master(master_chain_code,
        bc::system::wallet::hd_public::testnet);

    BITCOIN_ASSERT(bc::system::wallet::hd_public::testnet == 70617039);
    BITCOIN_ASSERT(master);

    auto user_chain = master.derive_public(user_id);
    auto key_chain = user_chain.derive_public(chain_index);

    // This line asserts
    BITCOIN_ASSERT(user_chain);
    BITCOIN_ASSERT(key_chain);

    bc::system::wallet::ec_public public_key(key_chain.point());

    auto payaddr = public_key.to_payment_address(0x6f);
    return payaddr.encoded();
}

int main()
{
    get_address(0, 110);
    return 0;
}

hd_public hd_public::derive_public(uint32_t index) const
{
    if (index >= hd_first_hardened_key)
        return {};

    const auto data = splice(point_, to_big_endian(index));
    const auto intermediate = split(hmac_sha512_hash(data, chain_));

    // The returned child key Ki is point(parse256(IL)) + Kpar.
    auto child = point_;
    if (!ec_add(child, intermediate.left))
        return {};

    if (lineage_.depth == max_uint8)
        return {};

    const hd_lineage lineage
    {
        lineage_.prefixes,
        static_cast<uint8_t>(lineage_.depth + 1),
        fingerprint(),
        index
    };

    return hd_public(child, intermediate.right, lineage);
}

        hd_public_version 70617039
        hd_secret_version 70615956
        pay_to_public_key_hash_version 111
        pay_to_script_hash_version 196
        transaction_version 1
        wif_version 239

    for (uint8_t attempt = 0; attempt <= max_uint8; attempt++)

for (uint8_t attempt = 0; ; attempt = (attempt == max_uint8) ? 0 : (attempt + 1))

16:22:22.307190 INFO [server] ================= startup Thu May 23 18:22:22 2019 ==================
16:22:22.307216 WARNING [server] ================= startup Thu May 23 18:22:22 2019 ==================
16:22:22.307259 ERROR [server] ================= startup Thu May 23 18:22:22 2019 ==================
16:22:22.307274 FATAL [server] ================= startup Thu May 23 18:22:22 2019 ==================
16:22:22.307285 INFO [server] Using config file: "/home/kk/usr/etc/libbitcoin/bs.cfg"
16:22:22.307299 INFO [server] Please wait while the server is starting...
16:22:22.308752 INFO [network] Starting manual session.
16:22:22.309198 INFO [server] Seeding is complete.
16:22:22.309232 INFO [node] Top confirmed block height is (0).
16:22:22.309260 INFO [node] Top candidate block height is (0).
16:22:22.309274 INFO [node] Top valid candidate block height (0).
16:22:22.309283 INFO [node] Pending candidate block downloads (0).
16:22:22.309329 INFO [network] Starting inbound session on port (18333).
16:22:22.309452 INFO [network] Starting outbound session.
16:22:22.310787 INFO [server] Bound public query service to tcp://*:9091
16:22:22.311137 ERROR [protocol] Configured HTTP root path '"web"' does not exist.
16:22:22.311199 INFO [server] Server failed to start with error, operation failed.
16:22:22.311339 INFO [server] Please wait while the server is stopping...