Wednesday, March 4, 2015

Experiment: Saving a .pdf with

My blog is on "Hiatus", and for at least a while to be only used for my idiosyncratic uses...

The below experiment is sending a hash of a .pdf file (two pages) for permanent placement on the blockchain. hash of this article:

*   *   *

-- File Name (Home Computer):


-- Description:

a .pdf file of our latest Invoice from Iljin of Korea

-- Downloaded and saved 4 March 2015, starting time approx. 23:30 US ET

-- hash ("Document Information"):


-- wallet address:

-- Amount (Bitcoin) sent to above wallet ID:


-- Blockchain block number:


-- Blockchain hash number (Transaction ID), my payment:

-- Blockchain hash number (Transaction ID), their placement of my document on the blockchain:


-- OP_RETURN via (c047350beb...):

OP_RETURN 444f4350524f4f461bb311f3da1388bdde59926c8d0b0b77f673e8d4b6249b48c20c507fd3e5503b 
(decoded) j(DOCPROOF � �� ���Y�l� w�s�Զ$�H� P��P;

-- Other output (

5 Mar 2015
5:29 GMT


OP_RETURN (via, "decoded part") magnified, note symbol (red):

DOCPROOF � �� ���Y�l� w�s�Զ$�H� P��P;

-- Public Note (best viewed via, "my payment" transaction ID above):

Public Note: IJG-141218AMERU.PDF


1)  Yes, proofofexistence waits for a confirmation...  This takes an average of 10 minutes.  It can take quite a bit longer (and is in this case, this block took 40 minutes to be found).

2)  Yes, proofofexistence confirms my hashed document is now on the blockchain successfully encrypted, placed and hash number confirmed.