# Redeem multisig dust - Cannot broadcast (mandatory-script-verify-flag-failed)

**URL:** <https://forums.counterparty.io/t/redeem-multisig-dust-cannot-broadcast-mandatory-script-verify-flag-failed/2568>\
**Category:** Support\
**Created:** [January 2, 2017, 8:16am UTC](https://forums.counterparty.io/t/redeem-multisig-dust-cannot-broadcast-mandatory-script-verify-flag-failed/2568 "2017-01-02T08:16:08Z")\
**Posts on this page:** 18\
**Page:** 1

<div class="post-metadata">

**Author:** ![JPJA](https://yyz2.discourse-cdn.com/flex004/user_avatar/forums.counterparty.io/jpja/32/1324_2.png) [@JPJA](https://forums.counterparty.io/u/JPJA)\
**Post date:** [January 2, 2017, 8:16am UTC](https://forums.counterparty.io/t/redeem-multisig-dust-cannot-broadcast-mandatory-script-verify-flag-failed/2568/1 "2017-01-02T08:16:08Z")

</div>

The service “Bitcoin Coin Sweeper - Redeem any multisig or dust output” at [http://redeem.bitwatch.co/](http://redeem.bitwatch.co/) lets you find unspent outputs from Counterwallet. If you used CW more than a year ago (now it uses op\_return, so not an issue anymore), you may have a significant amount of “dust bitcoins” you should be able to redeem.

The coin sweeper gives a hex to sign. I verify and sign with [https://coinb.in](https://coinb.in).

After I sign, I get a hex encoded bitcoin transaction. It cannot be broadcast!  
Error `16: mandatory-script-verify-flag-failed (Non-canonical DER signature)`

On services such as [https://www.smartbit.com.au/txs/decodetx](https://www.smartbit.com.au/txs/decodetx) the tx appears ok.

* * *

P.S. The coin sweeper shows a list of outputs. They are of types ‘multisig’ and ‘pubkeyhash’. It works for those labeled ‘pubkeyhash’ so at least these outputs you can redeem.

---

<div class="post-metadata">

**Author:** ![JPJA](https://yyz2.discourse-cdn.com/flex004/user_avatar/forums.counterparty.io/jpja/32/1324_2.png) [@JPJA](https://forums.counterparty.io/u/JPJA)\
**Post date:** [January 2, 2017, 8:27am UTC](https://forums.counterparty.io/t/redeem-multisig-dust-cannot-broadcast-mandatory-script-verify-flag-failed/2568/2 "2017-01-02T08:27:09Z")

</div>

A concrete example. Raw tx:

`01000000012fd2659de7463e6b0f240df7db6a51261ee515142dea38f7664da74cac5cc83202000000910047304402205d45ba19515dd15ecb5eb9635520998e801bb1ef36cff314cffae400b678df0a022036b8247e58dcc4f51934cdc9e4a5c2b4b8a16f453cd3e88cd502f28febd7a0c80147512102f3d205c9d7353fbfa7aa0693822381b83497b2697b1e4c19fcc0eae998e04aad211065642064657465726d696e65732062650000000000000000000000000000000052aeffffffff01901a0000000000001976a914d88acffb4e8a087ba3d90f5168af540f749f593d88ac00000000`

* * *

Broadcast error with BlockCypher:

`Error sending transaction: Error running script for input 0 referencing 32c85cac4ca74d66f738ea2d1415e51e26516adbf70d240f6b3e46e79d65d22f at 2: Script was NOT verified successfully..`

* * *

Decoded with [https://www.smartbit.com.au/txs/decodetx](https://www.smartbit.com.au/txs/decodetx) :

`{ "Version": "1", "LockTime": "0", "Vin": [{ "TxId": "32c85cac4ca74d66f738ea2d1415e51e26516adbf70d240f6b3e46e79d65d22f", "Vout": "2", "ScriptSig": { "Asm": "0 304402205d45ba19515dd15ecb5eb9635520998e801bb1ef36cff314cffae400b678df0a022036b8247e58dcc4f51934cdc9e4a5c2b4b8a16f453cd3e88cd502f28febd7a0c8[ALL] 512102f3d205c9d7353fbfa7aa0693822381b83497b2697b1e4c19fcc0eae998e04aad211065642064657465726d696e65732062650000000000000000000000000000000052ae", "Hex": "0047304402205d45ba19515dd15ecb5eb9635520998e801bb1ef36cff314cffae400b678df0a022036b8247e58dcc4f51934cdc9e4a5c2b4b8a16f453cd3e88cd502f28febd7a0c80147512102f3d205c9d7353fbfa7aa0693822381b83497b2697b1e4c19fcc0eae998e04aad211065642064657465726d696e65732062650000000000000000000000000000000052ae" }, "CoinBase": null, "TxInWitness": null, "Sequence": "4294967295" } ], "Vout": [{ "Value": 0.000068, "N": 0, "ScriptPubKey": { "Asm": "OP_DUP OP_HASH160 d88acffb4e8a087ba3d90f5168af540f749f593d OP_EQUALVERIFY OP_CHECKSIG", "Hex": "76a914d88acffb4e8a087ba3d90f5168af540f749f593d88ac", "ReqSigs": 1, "Type": "pubkeyhash", "Addresses": [ "1LjyFHwDwJXkqfwRsWyRWsqNaRxhK7v3Rh"] } } ], "TxId": "79ac2bda94bc9d786117b6cc5fd61bdec6796c321e6c7bae629a70469c2a9834" }`

---

<div class="post-metadata">

**Author:** ![something](https://yyz2.discourse-cdn.com/flex004/user_avatar/forums.counterparty.io/something/32/240_2.png) [@something](https://forums.counterparty.io/u/something)\
**Post date:** [January 2, 2017, 9:59am UTC](https://forums.counterparty.io/t/redeem-multisig-dust-cannot-broadcast-mandatory-script-verify-flag-failed/2568/3 "2017-01-02T09:59:23Z")

</div>

Have you verified your DER sig is correct?

> <https://bitcoin.stackexchange.com/questions/32194/how-to-verify-ecdsa-of-a-sample-litecoin-tx-using-pycoin>

---

<div class="post-metadata">

**Author:** ![JPJA](https://yyz2.discourse-cdn.com/flex004/user_avatar/forums.counterparty.io/jpja/32/1324_2.png) [@JPJA](https://forums.counterparty.io/u/JPJA)\
**Post date:** [January 3, 2017, 12:23pm UTC](https://forums.counterparty.io/t/redeem-multisig-dust-cannot-broadcast-mandatory-script-verify-flag-failed/2568/4 "2017-01-03T12:23:47Z")

</div>

Reply on GitHub

`How do you sign the failing transactions? Openssl?`

`Did you make sure you confirming to BIP62: [https://github.com/bitcoin/bips/blob/master/bip-0062.mediawiki](https://github.com/bitcoin/bips/blob/master/bip-0062.mediawiki) (strict DER encoding)?``

I don’t know the technical details here. I just try to use services others built. If someone with the technical knowledge reads this, would be great if you look into it and answer on Github.

> <https://github.com/bitcoin/bitcoin/issues/9455#issuecomment-270063359>
>
> Error Error 16: mandatory-script-verify-flag-failed (Non-canonical DER signature)
> when broadcasting although transaction verifies ok.
> More details : https://forums.counterparty.io/t/redeem-multisig-dust-cannot-broadcast-mandatory-script-verify-flag-failed/2568

---

<div class="post-metadata">

**Author:** ![something](https://yyz2.discourse-cdn.com/flex004/user_avatar/forums.counterparty.io/something/32/240_2.png) [@something](https://forums.counterparty.io/u/something)\
**Post date:** [January 3, 2017, 1:24pm UTC](https://forums.counterparty.io/t/redeem-multisig-dust-cannot-broadcast-mandatory-script-verify-flag-failed/2568/5 "2017-01-03T13:24:32Z")

</div>

I tried to check the DER part yesterday but didn’t get anywhere as I kept getting errors about the missing previous (vin) transaction despite using the a option to fetch it from API providers. I used pycoin for that, by the way.

The question is basically similar to what I asked yesterday - how did you compose the transaction, with what tools and what parameters. That would answer whether the way you created it was correct.

pycoin [here](https://github.com/richardkiss/pycoin/blob/5ff38557279ce0c56c9d19bf2687f0004d0c6e15/tests/data/tx_valid.json#L232) has a unit test that checks for non-standard transactions and can [optionally](https://github.com/richardkiss/pycoin/blob/6b9fb1c280343164d469d1c50b327a06ea6e89de/README.md#too-slow) sign with OpenSSL (but I understand it’s not on by default since it’s new) so if you used that, it would likely not use OpenSSL and it’d check for non-standard DER.

But if you used something else, then it could be some other setup.

---

<div class="post-metadata">

**Author:** ![JPJA](https://yyz2.discourse-cdn.com/flex004/user_avatar/forums.counterparty.io/jpja/32/1324_2.png) [@JPJA](https://forums.counterparty.io/u/JPJA)\
**Post date:** [January 3, 2017, 1:27pm UTC](https://forums.counterparty.io/t/redeem-multisig-dust-cannot-broadcast-mandatory-script-verify-flag-failed/2568/6 "2017-01-03T13:27:41Z")

</div>

Transaction generated with [http://redeem.bitwatch.co](http://redeem.bitwatch.co)

Verified and signed with [https://coinb.in](https://coinb.in).

Broadcast failed with coinb.in. Tried broadcasting from other sites too, but all gave error.

---

<div class="post-metadata">

**Author:** ![something](https://yyz2.discourse-cdn.com/flex004/user_avatar/forums.counterparty.io/something/32/240_2.png) [@something](https://forums.counterparty.io/u/something)\
**Post date:** [January 3, 2017, 1:29pm UTC](https://forums.counterparty.io/t/redeem-multisig-dust-cannot-broadcast-mandatory-script-verify-flag-failed/2568/7 "2017-01-03T13:29:39Z")

</div>

Ah, okay. I now realize you mentioned that at the top, but I never got the Redeem code to work for me so I didn’t see how it creates outputs (I could read the source, but I wouldn’t understand it). I’ll check if I have any addresses with multisig dust myself.  
Edit: just realized the “default” address in there actually is a demo address. I used to think it’s a “donation” address. 🙂

---

<div class="post-metadata">

**Author:** ![something](https://yyz2.discourse-cdn.com/flex004/user_avatar/forums.counterparty.io/something/32/240_2.png) [@something](https://forums.counterparty.io/u/something)\
**Post date:** [January 3, 2017, 1:47pm UTC](https://forums.counterparty.io/t/redeem-multisig-dust-cannot-broadcast-mandatory-script-verify-flag-failed/2568/8 "2017-01-03T13:47:02Z")

</div>

Well, it’s like this - assuming you swept the `1LjyFHwDwJXkqfwRsWyRWsqNaRxhK7v3Rh` i.e. the info you provided is correct - when I look at Redeem’s potential outputs there’s close to 20 of them.

Consequently, if you swept all of them, you’re supposed to decode that to a long tx like this (using blockchain.info).

````auto
{
   "lock_time":0,
   "size":2196,
   "inputs":[
      {
         "prev_out":{
            "index":0,
            "hash":"500f1aea832ca388da54618bf35ba1e04b118ab94d6631115f9684ad566361cb"
         },
         "script":"512102f3d205c9d7353fbfa7aa0693822381b83497b2697b1e4c19fcc0eae998e04aad2120434e5452505254590000001e53f4531dbff0000000000000000027102754455352ae"
      },
      {
         "prev_out":{
            "index":1,
            "hash":"500f1aea832ca388da54618bf35ba1e04b118ab94d6631115f9684ad566361cb"
         },
         "script":"512102f3d205c9d7353fbfa7aa0693822381b83497b2697b1e4c19fcc0eae998e04aad212054202d20436f696e20466c6970202d2031203d2068656164732c2032203d207452ae"
      },
      {
         "prev_out":{
            "index":2,
            "hash":"500f1aea832ca388da54618bf35ba1e04b118ab94d6631115f9684ad566361cb"
         },
         "script":"512102f3d205c9d7353fbfa7aa0693822381b83497b2697b1e4c19fcc0eae998e04aad211061696c730000000000000000000000000000000000000000000000000000000052ae"
      },
      {
         "prev_out":{
            "index":0,
            "hash":"32c85cac4ca74d66f738ea2d1415e51e26516adbf70d240f6b3e46e79d65d22f"
         },
         "script":"512102f3d205c9d7353fbfa7aa0693822381b83497b2697b1e4c19fcc0eae998e04aad2120434e5452505254590000001e53f473c3bff000000000000000002710334c617352ae"
      },
      {
         "prev_out":{
            "index":1,
            "hash":"32c85cac4ca74d66f738ea2d1415e51e26516adbf70d240f6b3e46e79d65d22f"
         },
         "script":"512102f3d205c9d7353fbfa7aa0693822381b83497b2697b1e4c19fcc0eae998e04aad212074206469676974206f6620626c6f636b2068617368207768656e206d6174636852ae"
      },
      {
         "prev_out":{
            "index":2,
            "hash":"32c85cac4ca74d66f738ea2d1415e51e26516adbf70d240f6b3e46e79d65d22f"
         },
         "script":"512102f3d205c9d7353fbfa7aa0693822381b83497b2697b1e4c19fcc0eae998e04aad211065642064657465726d696e65732062650000000000000000000000000000000052ae"
      },
      {
         "prev_out":{
            "index":0,
            "hash":"c5c602c588c5c9ce00bf746b49511c8e5bdf5ae1abe6ba7ec2f10cb8e32e68e6"
         },
         "script":"512102f3d205c9d7353fbfa7aa0693822381b83497b2697b1e4c19fcc0eae998e04aad2120434e5452505254590000001e53f49aaabff000000000000000002710304d617452ae"
      },
      {
         "prev_out":{
            "index":1,
            "hash":"c5c602c588c5c9ce00bf746b49511c8e5bdf5ae1abe6ba7ec2f10cb8e32e68e6"
         },
         "script":"512102f3d205c9d7353fbfa7aa0693822381b83497b2697b1e4c19fcc0eae998e04aad2120636820626c6f636b2068617368206c617374206467743b206f64643d6865616452ae"
      },
      {
         "prev_out":{
            "index":2,
            "hash":"c5c602c588c5c9ce00bf746b49511c8e5bdf5ae1abe6ba7ec2f10cb8e32e68e6"
         },
         "script":"512102f3d205c9d7353fbfa7aa0693822381b83497b2697b1e4c19fcc0eae998e04aad2110732c206576656e3d7461696c730000000000000000000000000000000000000052ae"
      },
      {
         "prev_out":{
            "index":0,
            "hash":"2d2f93bfb3f0b9ec481930f7d60e1cf35e79c44251d8ae5d6b680548b84d9585"
         },
         "script":"512102f3d205c9d7353fbfa7aa0693822381b83497b2697b1e4c19fcc0eae998e04aad2120434e5452505254590000001e53f649264000000000000000000027101f54455352ae"
      },
      {
         "prev_out":{
            "index":1,
            "hash":"2d2f93bfb3f0b9ec481930f7d60e1cf35e79c44251d8ae5d6b680548b84d9585"
         },
         "script":"512102f3d205c9d7353fbfa7aa0693822381b83497b2697b1e4c19fcc0eae998e04aad211c54202d20436f696e20666c697020726573756c74203d205441494c530000000052ae"
      },
      {
         "prev_out":{
            "index":0,
            "hash":"1094bcfb74688413809d4974885b6418434046494c0abb05b9a2e8b61b02334e"
         },
         "script":"512102f3d205c9d7353fbfa7aa0693822381b83497b2697b1e4c19fcc0eae998e04aad2120434e5452505254590000001e53f64ff7bff0000000000000000027102e426c6f52ae"
      },
      {
         "prev_out":{
            "index":1,
            "hash":"1094bcfb74688413809d4974885b6418434046494c0abb05b9a2e8b61b02334e"
         },
         "script":"512102f3d205c9d7353fbfa7aa0693822381b83497b2697b1e4c19fcc0eae998e04aad2120636b20333136373030204c617374204469676974206f6620486173682c204f6452ae"
      },
      {
         "prev_out":{
            "index":2,
            "hash":"1094bcfb74688413809d4974885b6418434046494c0abb05b9a2e8b61b02334e"
         },
         "script":"512102f3d205c9d7353fbfa7aa0693822381b83497b2697b1e4c19fcc0eae998e04aad210b643d312c204576656e3d3200000000000000000000000000000000000000000052ae"
      },
      {
         "prev_out":{
            "index":0,
            "hash":"fc07c8e88f5e9a6f02e3a0ef92f7e4365b23ab396e03e6b3408b395d93857d7f"
         },
         "script":"51210357cc019f62354d34f6c51996428f663df6e2633555870680d51b17cae2bada892102f37b96967facc59985d45d9654b26a28cf5a49df5e7b2e7afc7871cfa3598a082102f3d205c9d7353fbfa7aa0693822381b83497b2697b1e4c19fcc0eae998e04aad53ae"
      },
      {
         "prev_out":{
            "index":0,
            "hash":"73e826959562ecb747838411688403d3d9b7ce0bad45c95b9ddcec97496c62de"
         },
         "script":"512102f4f6c05bd40a0264d8db3502f7ac49d065e3a8d2e78f9e4c426c5bb0c4ce918321023af48f63891e5a438ef6e85da43949cc459142b013c02480cd6334e8530850ff2102f3d205c9d7353fbfa7aa0693822381b83497b2697b1e4c19fcc0eae998e04aad53ae"
      },
      {
         "prev_out":{
            "index":0,
            "hash":"300b97fdd7a84619dc32c182a6e7bbdf66ae25495a87e7fc3b6bd18aca7de638"
         },
         "script":"5121030b978d45bef1a673a007830426f301b7d7d1cc24722700161dea08580654656a2102da3ae5ee02118df3ef09ba483cc92e7fbfebe5281ff68444787e971318d85e5d2102f3d205c9d7353fbfa7aa0693822381b83497b2697b1e4c19fcc0eae998e04aad53ae"
      },
      {
         "prev_out":{
            "index":0,
            "hash":"aea52a91e2caff47d1f2eb8fed821739e991bd03c0fa6d948df5c737f7c77831"
         },
         "script":"512103c3d1f6d3c720c641aee2c6cecf4bb3875ab0e2daef87a5f43362f0814a8a43c52103a1a24128ea3ee013a44a2d2093b234af4f47ed76f54967204cb57284e72f68322102f3d205c9d7353fbfa7aa0693822381b83497b2697b1e4c19fcc0eae998e04aad53ae"
      }
   ],
   "version":1,
   "vin_sz":18,
   "hash":"39207c798631111d5e7a07dc3e7b913c89fdbfb519f45d0e3760f4ff00efc338",
   "vout_sz":1,
   "out":[
      {
         "script_string":"OP_DUP OP_HASH160 d88acffb4e8a087ba3d90f5168af540f749f593d OP_EQUALVERIFY OP_CHECKSIG",
         "address":"1LjyFHwDwJXkqfwRsWyRWsqNaRxhK7v3Rh",
         "value":137400,
         "script":"76a914d88acffb4e8a087ba3d90f5168af540f749f593d88ac"
      }
   ]
}```
````

---

<div class="post-metadata">

**Author:** ![JPJA](https://yyz2.discourse-cdn.com/flex004/user_avatar/forums.counterparty.io/jpja/32/1324_2.png) [@JPJA](https://forums.counterparty.io/u/JPJA)\
**Post date:** [January 3, 2017, 5:50pm UTC](https://forums.counterparty.io/t/redeem-multisig-dust-cannot-broadcast-mandatory-script-verify-flag-failed/2568/9 "2017-01-03T17:50:15Z")

</div>

I checked the address 1JDogZzWJMuyeEDcuFpmLUQ2u4b6RfuDTd  
It has 0.33 BTC of redeemable dust. That’s 330 USD and will probably require something like a $50 fee for the sweep transaction 😄

@jdogresorg

My dust should be around this magnitude too, though spread over several addresses.

---

<div class="post-metadata">

**Author:** ![something](https://yyz2.discourse-cdn.com/flex004/user_avatar/forums.counterparty.io/something/32/240_2.png) [@something](https://forums.counterparty.io/u/something)\
**Post date:** [January 3, 2017, 6:13pm UTC](https://forums.counterparty.io/t/redeem-multisig-dust-cannot-broadcast-mandatory-script-verify-flag-failed/2568/10 "2017-01-03T18:13:40Z")

</div>

So you were trying to spend outputs of `1JDogZzWJMuyeEDcuFpmLUQ2u4b6RfuDTd` by crafting a Send transaction to `1LjyFHwDwJXkqfwRsWyRWsqNaRxhK7v3Rh`?

But there was no `1JDogZzWJMuyeEDcuFpmLUQ2u4b6RfuDTd` in any of the inputs.

---

<div class="post-metadata">

**Author:** ![JPJA](https://yyz2.discourse-cdn.com/flex004/user_avatar/forums.counterparty.io/jpja/32/1324_2.png) [@JPJA](https://forums.counterparty.io/u/JPJA)\
**Post date:** [January 4, 2017, 9:19am UTC](https://forums.counterparty.io/t/redeem-multisig-dust-cannot-broadcast-mandatory-script-verify-flag-failed/2568/11 "2017-01-04T09:19:41Z")

</div>

No. I cannot sign any tx from `1JDogZzWJMuyeEDcuFpmLUQ2u4b6RfuDTd`.  
I mentioned his address as an example.

---

<div class="post-metadata">

**Author:** ![JPJA](https://yyz2.discourse-cdn.com/flex004/user_avatar/forums.counterparty.io/jpja/32/1324_2.png) [@JPJA](https://forums.counterparty.io/u/JPJA)\
**Post date:** [January 4, 2017, 11:17am UTC](https://forums.counterparty.io/t/redeem-multisig-dust-cannot-broadcast-mandatory-script-verify-flag-failed/2568/12 "2017-01-04T11:17:54Z")

</div>

New reply on Bitcoin Github:

`Based on the other thread @Jpja used https://coinb.in to sign the transaction.`

`My guess is their service still produces high-S values.`

`Can you try to sign the transaction via CounterWallet or Bitcoin Core, as described here?`

[https://bitcointalk.org/index.php?topic=573342.msg6336408#msg6336408](https://bitcointalk.org/index.php?topic=573342.msg6336408#msg6336408)

---

<div class="post-metadata">

**Author:** ![JPJA](https://yyz2.discourse-cdn.com/flex004/user_avatar/forums.counterparty.io/jpja/32/1324_2.png) [@JPJA](https://forums.counterparty.io/u/JPJA)\
**Post date:** [January 4, 2017, 11:50am UTC](https://forums.counterparty.io/t/redeem-multisig-dust-cannot-broadcast-mandatory-script-verify-flag-failed/2568/13 "2017-01-04T11:50:30Z")

</div>

In Counterwallet I get error  
`Invalid DER format public key`

I don’t have Bitcoin Core. Maybe someone can try?

---

<div class="post-metadata">

**Author:** ![something](https://yyz2.discourse-cdn.com/flex004/user_avatar/forums.counterparty.io/something/32/240_2.png) [@something](https://forums.counterparty.io/u/something)\
**Post date:** [January 4, 2017, 12:00pm UTC](https://forums.counterparty.io/t/redeem-multisig-dust-cannot-broadcast-mandatory-script-verify-flag-failed/2568/14 "2017-01-04T12:00:49Z")

</div>

> [@JPJA](#):
>
> I mentioned his address as an example.

Okay, I assume you swept `1LjyFHwDwJXkqfwRsWyRWsqNaRxhK7v3Rh`, then.

Where are your inputs, though? The JSON I pasted is correct for `1LjyFHwDwJXkqfwRsWyRWsqNaRxhK7v3Rh`, whereas I don’t know what your transaction is supposed to mean (in terms of inputs).

---

<div class="post-metadata">

**Author:** ![JPJA](https://yyz2.discourse-cdn.com/flex004/user_avatar/forums.counterparty.io/jpja/32/1324_2.png) [@JPJA](https://forums.counterparty.io/u/JPJA)\
**Post date:** [January 4, 2017, 12:16pm UTC](https://forums.counterparty.io/t/redeem-multisig-dust-cannot-broadcast-mandatory-script-verify-flag-failed/2568/15 "2017-01-04T12:16:25Z")

</div>

Here’s one where I only try the hash  
`32c85cac4ca74d66f738ea2d1415e51e26516adbf70d240f6b3e46e79d65d22f`

 ![](https://canada1.discourse-cdn.com/flex004/uploads/counterpartytalk/original/1X/cd128156d5c0be7b72b89c5ac590d56d3aedcbbf.JPG)

Sign and broadcast this hex string to redeem the unspent outputs:  
`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`

* * *

Trying to sign it in CW, I get error  
`Invalid DER format public key`

The same error applies whether I try few or many (or all) outputs.

---

<div class="post-metadata">

**Author:** ![something](https://yyz2.discourse-cdn.com/flex004/user_avatar/forums.counterparty.io/something/32/240_2.png) [@something](https://forums.counterparty.io/u/something)\
**Post date:** [January 4, 2017, 12:30pm UTC](https://forums.counterparty.io/t/redeem-multisig-dust-cannot-broadcast-mandatory-script-verify-flag-failed/2568/16 "2017-01-04T12:30:31Z")

</div>

1. You maybe better update the github issue with the info on the address you used to compose that transaction

2. DER keys come in compressed and uncompressed formats. I’d try to use the other format (from the one used by CounterWallet - you can dig that out from the CW code).  
Bitcore library can get you the both formats.  
If you use the wrong format, then CW understands it as an attempt to sign it from a different address.  
An easier way is to encode the transaction in Bitcoin Core and send it, rather than let someone encode it for you and then obtain the other, unusual format of your pubkey, but either way should do if that’s the only issue.

---

<div class="post-metadata">

**Author:** ![something](https://yyz2.discourse-cdn.com/flex004/user_avatar/forums.counterparty.io/something/32/240_2.png) [@something](https://forums.counterparty.io/u/something)\
**Post date:** [January 5, 2017, 3:32pm UTC](https://forums.counterparty.io/t/redeem-multisig-dust-cannot-broadcast-mandatory-script-verify-flag-failed/2568/17 "2017-01-05T15:32:01Z")

</div>

Okay, 3 more hours spent on this (I tried completely composing a lengthy transaction from one of my old addresses).

I was pretty sure DER signature used (or rather got from the Web site which composed the transaction) was wrong. But now after being unable to compose a valid transaction using several ways, I think this is the reason:

> <https://github.com/bitcoin/bitcoin/blob/53133c1c041d113c2a480a18e6ff38681d135dca/src/script/interpreter.h#L38-L48>

I don’t know which of them exactly, but basically compared to before new DER-related rules kicked in and now what used to work before can’t work any more. BIP62 rules can be found here: [https://github.com/bitcoin/bips/blob/master/bip-0062.mediawiki#New\_rules](https://github.com/bitcoin/bips/blob/master/bip-0062.mediawiki#New_rules)

So maybe the Redeem guy can update the script or someone can try to look at these rules and create a compliant transaction (I give up, too difficult).

---

<div class="post-metadata">

**Author:** ![JPJA](https://yyz2.discourse-cdn.com/flex004/user_avatar/forums.counterparty.io/jpja/32/1324_2.png) [@JPJA](https://forums.counterparty.io/u/JPJA)\
**Post date:** [January 10, 2017, 11:23am UTC](https://forums.counterparty.io/t/redeem-multisig-dust-cannot-broadcast-mandatory-script-verify-flag-failed/2568/18 "2017-01-10T11:23:26Z")

</div>

This address has redeemed all multisig dust:  
[http://blockscan.com/address/1BADaNiGQ3GuF8Fb35oWpym4KfzLCbHvYb](http://blockscan.com/address/1BADaNiGQ3GuF8Fb35oWpym4KfzLCbHvYb)

Example redeem transaction:  
[https://www.blocktrail.com/BTC/tx/f4e2d186ed56aad9b965370411cece4e65fb8dba33ba04d03295299c273e527f](https://www.blocktrail.com/BTC/tx/f4e2d186ed56aad9b965370411cece4e65fb8dba33ba04d03295299c273e527f)

And indeed, [http://redeem.bitwatch.co/](http://redeem.bitwatch.co/) indicates that this address has  
`0 unspent outputs`

Maybe it’s possible to figure out how they did it by studying the redeem transaction?

* * *

Check this funny thread. People were giving out passphrases with multisig dust and someone did indeed sweep them

> [@Public Passphrase & Sweepable Multisig](https://forums.counterparty.io/t/public-passphrase-sweepable-multisig/1535):
>
> The address 1God8QecZZVs2jA3z5tZaAKV5gwLYtfaQv has a publicly known passphrase: childhood confusion large many bridge guy reveal press treat soul murder crush About 20 cent worth of BTC are stuck in redeemable multisig. Afaik there is no tool to redeem these funds. Whoever first finds a way can cash in these multisigs. Another public passphrase is love love love love love love love love love love love love I know 20 cent is not much of an incentive but I encourage everyone to continue playin…