that is usually how OP_Return outputs look like, they insert a certain type of "data" into bitcoin blockchain that sometimes has a certain purpose so it starts with the same bytes. sometimes it is just concatenated bytes and sometimes it is a full script that could be run. for example someone posted this 2 days ago:
https://bitcointalksearch.org/topic/why-would-someone-keep-sending-546-satoshi-to-themselves-5179450other than that i don't think anybody can give you any more information unless you also post the transaction IDs.
also i don't see how you think this has anything to do with reusing k values for ECDSA (which is i assume what you meant by "repeated R"). can you explain why you think that? have you checked their signature and saw the same R being repeated?
I just modified the python script to scan for repeated R correctly because the old script had some limitations. This address has 30,000+ transactions to scan. At least this transactions don't have witness. (Transactions with witness always result in repeated R according to this script...to scan them properly also need to run a full segwit node[miner] to see the signatures) I will update you with my finding in an hour or so.
Reused R with Witness (just an example one of my old scan)
Address: 1757jTnwZTQtH6kdvTDA8gZzcEe9bWF5RQ
number of txs: 44
#################################################################################
........................................
#################################################################################
Resued R-Value:
d642c916dca24dd8075ef62ce889796938f56fb1aa63f334197091267232
In Input NR: 9[global increment] 2200206abe9d5b0b43f27471f4a29653600d6db5e5d698d716b8068bf49cd57e9e9c58
Resued R-Value:
9d5b0b43f27471f4a29653600d6db5e5d698d716b8068bf49cd57e9e9c58
In Input NR: 33[global increment] 22002002fdac89f28b8efff49638aa91fca25e7616b21eda3cb9cd7199107cc47f6151
Resued R-Value:
ac89f28b8efff49638aa91fca25e7616b21eda3cb9cd7199107cc47f6151
In Input NR: 33[global increment] 22002002fdac89f28b8efff49638aa91fca25e7616b21eda3cb9cd7199107cc47f6151
Resued R-Value:
ac89f28b8efff49638aa91fca25e7616b21eda3cb9cd7199107cc47f6151
In Input NR: 33[global increment] 22002002fdac89f28b8efff49638aa91fca25e7616b21eda3cb9cd7199107cc47f6151
Resued R-Value:
ac89f28b8efff49638aa91fca25e7616b21eda3cb9cd7199107cc47f6151
In Input NR: 33[global increment] 22002002fdac89f28b8efff49638aa91fca25e7616b21eda3cb9cd7199107cc47f6151
Resued R-Value:
ac89f28b8efff49638aa91fca25e7616b21eda3cb9cd7199107cc47f6151
In Input NR: 33[global increment] 22002002fdac89f28b8efff49638aa91fca25e7616b21eda3cb9cd7199107cc47f6151
Resued R-Value:
ac89f28b8efff49638aa91fca25e7616b21eda3cb9cd7199107cc47f6151
In Input NR: 33[global increment] 22002002fdac89f28b8efff49638aa91fca25e7616b21eda3cb9cd7199107cc47f6151
Resued R-Value:
ac89f28b8efff49638aa91fca25e7616b21eda3cb9cd7199107cc47f6151
In Input NR: 33[global increment] 22002002fdac89f28b8efff49638aa91fca25e7616b21eda3cb9cd7199107cc47f6151
Resued R-Value:
ac89f28b8efff49638aa91fca25e7616b21eda3cb9cd7199107cc47f6151
In Input NR: 33[global increment] 22002002fdac89f28b8efff49638aa91fca25e7616b21eda3cb9cd7199107cc47f6151
Resued R-Value:
ac89f28b8efff49638aa91fca25e7616b21eda3cb9cd7199107cc47f6151
In Input NR: 94[global increment] 220020336bd0d58152786a9b8e38e954c9f4e37307132b226046c2df5690a986dd3332
Resued R-Value:
d0d58152786a9b8e38e954c9f4e37307132b226046c2df5690a986dd3332
In Input NR: 94[global increment] 220020336bd0d58152786a9b8e38e954c9f4e37307132b226046c2df5690a986dd3332
Resued R-Value:
d0d58152786a9b8e38e954c9f4e37307132b226046c2df5690a986dd3332
In Input NR: 94[global increment] 220020336bd0d58152786a9b8e38e954c9f4e37307132b226046c2df5690a986dd3332
Resued R-Value:
d0d58152786a9b8e38e954c9f4e37307132b226046c2df5690a986dd3332
In Input NR: 98[global increment] 220020b67073a7774403ea1dc5b1f66c37869545e1257f399d5256f2b9ff9058bfcf56
Resued R-Value:
73a7774403ea1dc5b1f66c37869545e1257f399d5256f2b9ff9058bfcf56
In Input NR: 111[global increment] 220020336bd0d58152786a9b8e38e954c9f4e37307132b226046c2df5690a986dd3332
Resued R-Value:
d0d58152786a9b8e38e954c9f4e37307132b226046c2df5690a986dd3332
In Input NR: 111[global increment] 220020336bd0d58152786a9b8e38e954c9f4e37307132b226046c2df5690a986dd3332
Resued R-Value:
d0d58152786a9b8e38e954c9f4e37307132b226046c2df5690a986dd3332
In Input NR: 128[global increment] 220020336bd0d58152786a9b8e38e954c9f4e37307132b226046c2df5690a986dd3332
Resued R-Value:
d0d58152786a9b8e38e954c9f4e37307132b226046c2df5690a986dd3332
In Input NR: 158[global increment] 22002002fdac89f28b8efff49638aa91fca25e7616b21eda3cb9cd7199107cc47f6151
Resued R-Value:
ac89f28b8efff49638aa91fca25e7616b21eda3cb9cd7199107cc47f6151
In Input NR: 158[global increment] 22002002fdac89f28b8efff49638aa91fca25e7616b21eda3cb9cd7199107cc47f6151
Resued R-Value:
ac89f28b8efff49638aa91fca25e7616b21eda3cb9cd7199107cc47f6151
In Input NR: 158[global increment] 22002002fdac89f28b8efff49638aa91fca25e7616b21eda3cb9cd7199107cc47f6151
Resued R-Value:
ac89f28b8efff49638aa91fca25e7616b21eda3cb9cd7199107cc47f6151
In Input NR: 158[global increment] 22002002fdac89f28b8efff49638aa91fca25e7616b21eda3cb9cd7199107cc47f6151
Resued R-Value:
ac89f28b8efff49638aa91fca25e7616b21eda3cb9cd7199107cc47f6151
In Input NR: 158[global increment] 22002002fdac89f28b8efff49638aa91fca25e7616b21eda3cb9cd7199107cc47f6151
Resued R-Value:
ac89f28b8efff49638aa91fca25e7616b21eda3cb9cd7199107cc47f6151
In Input NR: 158[global increment] 22002002fdac89f28b8efff49638aa91fca25e7616b21eda3cb9cd7199107cc47f6151
Resued R-Value:
ac89f28b8efff49638aa91fca25e7616b21eda3cb9cd7199107cc47f6151
In Input NR: 158[global increment] 22002002fdac89f28b8efff49638aa91fca25e7616b21eda3cb9cd7199107cc47f6151
Resued R-Value:
ac89f28b8efff49638aa91fca25e7616b21eda3cb9cd7199107cc47f6151
In Input NR: 184[global increment] 22002002fdac89f28b8efff49638aa91fca25e7616b21eda3cb9cd7199107cc47f6151
Resued R-Value:
ac89f28b8efff49638aa91fca25e7616b21eda3cb9cd7199107cc47f6151
In Input NR: 184[global increment] 22002002fdac89f28b8efff49638aa91fca25e7616b21eda3cb9cd7199107cc47f6151
Resued R-Value:
ac89f28b8efff49638aa91fca25e7616b21eda3cb9cd7199107cc47f6151
In Input NR: 184[global increment] 22002002fdac89f28b8efff49638aa91fca25e7616b21eda3cb9cd7199107cc47f6151
Resued R-Value:
ac89f28b8efff49638aa91fca25e7616b21eda3cb9cd7199107cc47f6151
In Input NR: 184[global increment] 22002002fdac89f28b8efff49638aa91fca25e7616b21eda3cb9cd7199107cc47f6151
Resued R-Value:
ac89f28b8efff49638aa91fca25e7616b21eda3cb9cd7199107cc47f6151
In Input NR: 184[global increment] 22002002fdac89f28b8efff49638aa91fca25e7616b21eda3cb9cd7199107cc47f6151
Resued R-Value:
ac89f28b8efff49638aa91fca25e7616b21eda3cb9cd7199107cc47f6151
In Input NR: 184[global increment] 22002002fdac89f28b8efff49638aa91fca25e7616b21eda3cb9cd7199107cc47f6151
Resued R-Value:
ac89f28b8efff49638aa91fca25e7616b21eda3cb9cd7199107cc47f6151
In Input NR: 185[global increment] 22002065a1dbfdff46ac9ac584bd5a546ad9d1dc490b2eda71fd34ff172e7d634f40ce
Resued R-Value:
dbfdff46ac9ac584bd5a546ad9d1dc490b2eda71fd34ff172e7d634f40ce
In Input NR: 194[global increment] 22002002fdac89f28b8efff49638aa91fca25e7616b21eda3cb9cd7199107cc47f6151
Resued R-Value:
ac89f28b8efff49638aa91fca25e7616b21eda3cb9cd7199107cc47f6151
In Input NR: 194[global increment] 22002002fdac89f28b8efff49638aa91fca25e7616b21eda3cb9cd7199107cc47f6151
Resued R-Value:
ac89f28b8efff49638aa91fca25e7616b21eda3cb9cd7199107cc47f6151
In Input NR: 194[global increment] 22002002fdac89f28b8efff49638aa91fca25e7616b21eda3cb9cd7199107cc47f6151
Resued R-Value:
ac89f28b8efff49638aa91fca25e7616b21eda3cb9cd7199107cc47f6151
In Input NR: 194[global increment] 22002002fdac89f28b8efff49638aa91fca25e7616b21eda3cb9cd7199107cc47f6151
Resued R-Value:
ac89f28b8efff49638aa91fca25e7616b21eda3cb9cd7199107cc47f6151
In Input NR: 194[global increment] 22002002fdac89f28b8efff49638aa91fca25e7616b21eda3cb9cd7199107cc47f6151
Resued R-Value:
ac89f28b8efff49638aa91fca25e7616b21eda3cb9cd7199107cc47f6151
In Input NR: 196[global increment] 22002002fdac89f28b8efff49638aa91fca25e7616b21eda3cb9cd7199107cc47f6151
Resued R-Value:
ac89f28b8efff49638aa91fca25e7616b21eda3cb9cd7199107cc47f6151
In Input NR: 196[global increment] 22002002fdac89f28b8efff49638aa91fca25e7616b21eda3cb9cd7199107cc47f6151
Resued R-Value:
ac89f28b8efff49638aa91fca25e7616b21eda3cb9cd7199107cc47f6151
In Input NR: 196[global increment] 22002002fdac89f28b8efff49638aa91fca25e7616b21eda3cb9cd7199107cc47f6151
Resued R-Value:
ac89f28b8efff49638aa91fca25e7616b21eda3cb9cd7199107cc47f6151
In Input NR: 196[global increment] 22002002fdac89f28b8efff49638aa91fca25e7616b21eda3cb9cd7199107cc47f6151
Resued R-Value:
ac89f28b8efff49638aa91fca25e7616b21eda3cb9cd7199107cc47f6151
In Input NR: 198[global increment] 22002002fdac89f28b8efff49638aa91fca25e7616b21eda3cb9cd7199107cc47f6151
Resued R-Value:
ac89f28b8efff49638aa91fca25e7616b21eda3cb9cd7199107cc47f6151
In Input NR: 198[global increment] 22002002fdac89f28b8efff49638aa91fca25e7616b21eda3cb9cd7199107cc47f6151
Resued R-Value:
ac89f28b8efff49638aa91fca25e7616b21eda3cb9cd7199107cc47f6151
In Input NR: 198[global increment] 22002002fdac89f28b8efff49638aa91fca25e7616b21eda3cb9cd7199107cc47f6151
Resued R-Value:
ac89f28b8efff49638aa91fca25e7616b21eda3cb9cd7199107cc47f6151
In Input NR: 202[global increment] 22002002fdac89f28b8efff49638aa91fca25e7616b21eda3cb9cd7199107cc47f6151
Resued R-Value:
ac89f28b8efff49638aa91fca25e7616b21eda3cb9cd7199107cc47f6151
In Input NR: 202[global increment] 22002002fdac89f28b8efff49638aa91fca25e7616b21eda3cb9cd7199107cc47f6151
Resued R-Value:
ac89f28b8efff49638aa91fca25e7616b21eda3cb9cd7199107cc47f6151
In Input NR: 204[global increment] 22002002fdac89f28b8efff49638aa91fca25e7616b21eda3cb9cd7199107cc47f6151
Resued R-Value:
ac89f28b8efff49638aa91fca25e7616b21eda3cb9cd7199107cc47f6151
In Input NR: 255[global increment] 220020619e236c9dacae4ef40a703e5f2cbcbacc2deeb8a2cf132c07fd42d5b6e65146
Resued R-Value:
236c9dacae4ef40a703e5f2cbcbacc2deeb8a2cf132c07fd42d5b6e65146
all the secrets lie in the bytes if you look under the hood!
as the other poster said these are Omni layer transactions. the way to recognize them is first their OP_Return output which you would see as a red text on blockchain.com saying "Unable to decode output address" but looking under the hood you could see the output is this:
6a146f6d6e69000000000000001f0000000e45c3c500
the initial 4 bytes being 6f6d6e69 is an indicator of Omni
in case you are more interested:
6f6d6e69 Omni marker
0000 version
00000000001f tether marker
0000000e45c3c500 amount = 61,300,000,000
The transactions in question in this topic including this output:
9bf7e6a..... Not looking like Omni
