Untypical input script

Question

There are many untypical Input script data in blockchain. What does it mean?

For example, transaction:

4A253F17E5F4B24B41F72A6AE46DD1BCB25F7F33769C2AA5D50C6A6A7CF9F76E (link)

has it's input script:

3046022100EE238CAD1E8AC7F14661760B1B1FB2CF171F41AFB31E3B59D3CED2284A1C2A71022100BEF7FB989CCFB00A65C009A77B46BC818D2E80458668F73DA0072966AAA28B620103B2ABE09A1C4E67C3EB9ACD5596452A5D785C6E5A772FBEA9A29CA95C15598EA6

When I trying to parse this raw data, the result is:

30

46

02

21

00EE238CAD1E8AC7F14661760B1B1FB2CF171F41AFB31E3B59D3CED2284A1C2A71 – Sig r

02

21

00BEF7FB989CCFB00A65C009A77B46BC818D2E80458668F73DA0072966AAA28B62 – Sig s

01

03

B2ABE09A1C4E67C3EB9ACD5596452A5D785C6E5A772FBEA9A29CA95C15598EA6 – Unknown data.

What is the unknown data? This is not a Public Key, but what is it?

P.S. I checked that this unknown data is not a part of public key (X coordinate of Public Key as I thinking). After calculating Y coordinate (on EC) of Public Key I get 9F203515694856269C76C797D8E8E784EBDB927B650705E348F6FBA07DC56FAF. After I check the signature (Sig) with this:

Public Key = B2ABE09A1C4E67C3EB9ACD5596452A5D785C6E5A772FBEA9A29CA95C15598EA6, 9F203515694856269C76C797D8E8E784EBDB927B650705E348F6FBA07DC56FAF

Transaction hash for this Sig = 59E4367A829551DE94594777789B9274BFBDAC9F66550B02B85639945F21BE3A.

Then I calculate x and y from Public Key, Hash and generator point G. But x does not match the Sig r from raw data. So this way did not working.

Answer 1

It is a public key. I think you're parsing this transaction incorrectly - what you should get is that there are two elements. The first is a signature, and 73 bytes long, starting with 3046022100ee238c... The second element is a public key, and 33 bytes long, and starts with 03b2abe09a1c4e67...

---

Here's the transaction you linked, broken up into sig and pubkey.

version

01000000

vin count

01

outpoint

3abe215f943956b8020b55669facbdbf74929b7877475994de5195827a36e45900000000

script len

6c

push immediate 73 bytes

49

bytes

3046022100ee238cad1e8ac7f14661760b1b1fb2cf171f41afb31e3b59d3ced2284a1c2a71022100bef7fb989ccfb00a65c009a77b46bc818d2e80458668f73da0072966aaa28b6201

push immediate 33 bytes

21

bytes

03b2abe09a1c4e67c3eb9acd5596452a5d785c6e5a772fbea9a29ca95c15598ea6

sequence

ffffffff

(Everything below is part of the outputs.)

0206cfbb9f0f0000001976a914a66ba35c1d9bdcc8dfeb0fb8bedb16e1a570487d88ac09165612000000001976a914b420350a7b274e059d7ba5c97e8887d447b7287588ac00000000