# Dag put http api: cid link not working

**URL:** <https://discuss.ipfs.tech/t/dag-put-http-api-cid-link-not-working/10858>\
**Category:** Help\
**Tags:** ipld, go-ipfs\
**Created:** [April 10, 2021, 9:00am UTC](https://discuss.ipfs.tech/t/dag-put-http-api-cid-link-not-working/10858 "2021-04-10T09:00:30Z")\
**Posts on this page:** 2\
**Page:** 1

<div class="post-metadata">

**Author:** ![LucaPanofsky](https://sea2.discourse-cdn.com/flex020/user_avatar/discuss.ipfs.tech/lucapanofsky/32/4868_2.png) [@LucaPanofsky](https://discuss.ipfs.tech/u/LucaPanofsky)\
**Post date:** [April 10, 2021, 9:00am UTC](https://discuss.ipfs.tech/t/dag-put-http-api-cid-link-not-working/10858/1 "2021-04-10T09:00:30Z")

</div>

Hello!

I have been studying IPFS for a bit and I tried to follow some tutorials about the IPLD data model and programming in IPFS on proto school.

However, I can’t say it’s everything clear to me. In particular, during my journey of exploring IPLD, unfortunately, I got stuck very quickly. The problem is that the DAG objects I create do not work as expected for cid links are not recognized as such.

I am running an ipfs node with the following docker-compose file

> Blockquote  
> version: “3”  
> services:  
> ipfs-daemon:  
> image: ipfs/go-ipfs:latest  
> command: [“daemon”, “–enable-pubsub-experiment”]  
> container\_name: ipfs-daemon  
> volumes:  
> - /home/$USER/ipfs-docker:/data/ipfs  
> ports:  
> - 8080:8080  
> - 5001:5001  
> - 4001:4001

Then I tried to create a DAG object with the dag/put API, both from CLI and HTTP API. To do that I passed to the DAG API a JSON object and the execution of the command returned me the CID of the DAG object I created:

```
docker-compose exec ipfs-daemon ipfs dag put my_file.json 
bafyreignblg2i5iz3ibo5s76kw5l45ujnuqzpbhuqqcpt6ctpvrdu24soe

docker-compose exec ipfs-daemon ipfs dag get 
bafyreignblg2i5iz3ibo5s76kw5l45ujnuqzpbhuqqcpt6ctpvrdu24soe 
[returns my JSON object]

```

Finally, I tried to create a new dag object which points to the previously created one.  
The CID of this object is  
bafyreib2hwajflpkoqcxke4uj22ygx2dsrn4vbvppljngjtoaafc3exzfu

and the object is something like this:  
`{"author":"bafyreignblg2i5iz3ibo5s76kw5l45ujnuqzpbhuqqcpt6ctpvrdu24soe","signature":"blahblah"}`

Unfortunately, the IPDL explorer does not recognize the keyword author to contain a CID, it’s just a string. Why is that? I think I am doing something wrong though I do not understand how to fix thix.

To me, it seems that the only difference between my code and the examples I am following (see [IPFS Tutorial | Blogging on the Decentralized Web | ProtoSchool](https://proto.school/blog)) is that I am _NOT_ using the JS implementation of IPFS. Is that just it?

Do I have to use the JS implementation?

Thank you in advance for your time and patience, I will appreciate any comment and I wish you all a good day

---

<div class="post-metadata">

**Author:** ![LucaPanofsky](https://sea2.discourse-cdn.com/flex020/user_avatar/discuss.ipfs.tech/lucapanofsky/32/4868_2.png) [@LucaPanofsky](https://discuss.ipfs.tech/u/LucaPanofsky)\
**Post date:** [April 10, 2021, 10:38am UTC](https://discuss.ipfs.tech/t/dag-put-http-api-cid-link-not-working/10858/2 "2021-04-10T10:38:19Z")

</div>

I’ve just got it.

```
"{\"auth\":{\"\\/\":\"bafyreibiomlked3bdfcecevzlqgfxmlwzytu42bq2m7ktielnwpqnmpqte\"},\"val\":\"foo\"}"

```

A Link is an object that has the key `/` whose value is a `CID`.  
It took me a while to figure it out, is there a place where I can find a kind of list of those specs? I tried from the IPDL website though I was not able to find what I was looking for