| Company name | Reg. code |
|---|---|
| VCHAIN OÜ | 17008997 |
| 2CHAIN OÜ kustutatud | 16763177 |
| CHAIN1 OÜ (former name EDI CAPITAL OÜ) | 14655408 |
| XCHAIN TECHNOLOGY OÜ kustutatud | 17029686 |
| FUTURE CHAIN OÜ | 16319790 |
| BETTER CHAIN OÜ | 16087049 |
| CHAIN HOLDINGS OÜ kustutatud | 14406869 |
| BALTIC CHAIN OÜ kustutatud | 11509729 |
| CHAIN GAMES OÜ kustutatud | 16029997 |
| ARES CHAIN OÜ | 16624263 |
| CHAIN TLM OÜ (former name GRAND Property Corporation OÜ) | 12645854 |
| S-CHAIN OÜ kustutatud | 14923629 |
| AIRMAN CHAIN OÜ | 11486980 |
| CHAIN LABS OÜ kustutatud | 16024540 |
| ID-CHAIN OÜ (former name I-CHAIN OÜ) | 14687851 |
| CHAIN SHIFT OÜ | 14652953 |
| GENEZIS CHAIN OÜ kustutatud (former name Genezis Consult OÜ) | 16047305 |
| CHAIN SURFERS OÜ | 17008448 |
| CARBERRY CHAIN OÜ kustutatud | 14513252 |
| JAROONA CHAIN OÜ kustutatud | 14501208 |
| CHAIN FINANCE OÜ | 14538915 |
| MAJATO CHAIN OÜ (former name RINOPAL OÜ) | 12330850 |
| SMART CHAIN OÜ kustutatud | 14410374 |
| CHAIN2PAY OÜ kustutatud | 14569426 |
| CHAINX OÜ kustutatud | 14516115 |
| DECHAIN OÜ | 14632583 |
| QICHAIN OÜ kustutatud | 14642630 |
| UMCHAIN OÜ | 16483456 |
| COCHAIN OÜ kustutatud | 14631247 |
| VINCHAIN OÜ (former name Eurocrew OÜ) | 14322374 |
| CHAINR OÜ | 16331035 |
| ZICHAIN OÜ kustutatud (former name BaGuk Finance OÜ) | 14432499 |
| XCHAINS OÜ kustutatud | 14730073 |
| VILAIN OÜ | 12715431 |
| VERCHAIN OÜ kustutatud | 12738248 |
| 88CHAINS OÜ kustutatud | 12143897 |
| VAHIN OÜ | 17319214 |
| VUHIN OÜ | 17379251 |
| VCOIN OÜ kustutatud | 14800690 |
| VIHIN OÜ | 17049393 |
| ICHAI OÜ | 17025139 |
| CHAIA OÜ | 12984792 |
| VHAIR OÜ | 14644735 |
| SUPPLY CHAIN GURU OÜ | 12860759 |
| ON-CHAIN CONSULTING OÜ | 16273711 |
| ON-CHAIN-LABS OÜ kustutatud | 17159420 |
| SUPPLY CHAIN CONSULTING OÜ kustutatud | 12669027 |
| ENTERPRISE SUPPLY CHAIN OÜ | 14408093 |
| REAP CHAIN INC. OÜ | 14666381 |
| STUDENT EDU CHAIN OÜ kustutatud (former name NEXTANE OÜ) | 14516003 |