Questions tagged [tips]

The tag has no usage guidance, but it has a tag wiki.

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5 votes
1 answer
101 views

Is it intended that getTransactionsToApprove can possibly return non-tips as well?

If one calls the API function getTransactionsToApprove() one expects to receive 2 tips. To this end it calls the randomWalk() method two times. However I noticed that the randomWalk() routine contains ...
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  • 713
3 votes
1 answer
58 views

Why is tipcount 0 after restart?

I noticed that after a IRI restart the tip-count starts from 0 again. But i was under the impression that those tips have already been persisted locally, so how come that after a restart all those ...
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  • 713
9 votes
3 answers
531 views

Why confirming 2 previous transactions instead of 1 or 3, 4, 5?

In order to send a transaction, one has to validate 2 previous transactions. Why is it 2, instead of 1 or 3, 4, 5?
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4 votes
1 answer
132 views

Walking the tangle—How to get the parents?

Looking at Pseudocode to walk the tangle?, in order to walk the tangle you look at the open tips and then you look for the parents. getTips gives you a list of all the open tips. What API call is ...
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8 votes
1 answer
130 views

Are bundles one tip or four?

As a bundle is made of 4 or more transactions, and a bundle is accepted as a whole or not at all, is a bundle treated as a single tip by subsequent transactions, or is it treated as 4 tips, that are ...
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  • 213
6 votes
2 answers
217 views

Why do we reattach instead of sending a second transaction that confirms our first?

The spam attacks prove that its possible to attach a transaction to whichever tip you want. Normal operation of the tangle is to attach a transaction to two random tips and then wait for another node ...
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  • 470
7 votes
2 answers
691 views

What are tips and what is the tip selection algorithm?

What are tips and what do they do? And what is the tip select algorithm and where is it used for?
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