Block at Slot 139190

Epoch:

4,349

Slot:

139,190

Status:

Proposed

Time:

2025-01-08 03:08:00 +0000 UTC ()

Proposer:

icelandcalling-node2

Block Root:

0xe5cc686ddc5092bb66b66e1851bb3fa30bd8dbf2ede94df0dfbfce401e3c8de6

Parent Root:

0xa3b35d1bda4eb8b3f2494d0d532d0ff632d8cdf9e25fc2647b64020e5ab31b82

State Root:

0x400af90550fafdf1c947ad77c1165cff9ded998dacdf4f01d9f5d5db7c9c1fde

Signature:

0x9907e3c1e34e52b21087d3b7c6c97aa910e59d97cfce204618095c4d8ed4bba26c724444c388311058021ede8b8787080726bf97494042e8de37cf33b330809835be3576cb36e2a2f6db69d35259a8e9c9cac8343e8cdfa92811585ea6a68fcd

Randao Reveal:

0x93d20df62dce0d7cc4c861f4e96b447ba3a42f0ff54fa91ee48f7aa3c649b04266bf6bcd6c732139ae1639f2facd8f9c10134eb43f1e693a132e4aab39aa5fbc69a24e88e8305a3095198933ed6eb3783c97bba20ff3ff3ec850e07f7598345d

Graffiti:

0x42793a20526f636b657420506f6f6c0000000000000000000000000000000000

Hex UTF-8

Eth 1 Data:

Block Hash:

0xbf610a46672b870ffa9527e12bb2ee73e7dce4a59898071b9cfcb8387c286cfb

Deposit Count:

3,002

Deposit Root:

0x08c9248b85842304ca5bf554909ab96a72a04a2ebb99355dbd479df2cc2622fc

Sync Aggregate:

Participation:

93.95 %

Bits:

11111111 10111111 11111111 01111101 11111111 11011111 11111111 11111111
11110111 11011111 11111111 11110111 11111111 11111011 11111111 01111111
11111111 11111111 11111111 11111111 11101111 11111111 10111111 11111111
00111111 11111011 11110111 11111111 11111111 11111101 11011111 11111111
11100111 11111101 11111111 11111111 11111111 11111111 11111111 11111111
11111111 11111111 11011111 11111111 10111111 01111111 01111111 11101111
11111111 11111111 11111110 11111111 11111111 11111111 11111111 11111001
11111111 11111111 10111111 10111111 11111111 11111111 11111111 10111111

Signature:

0xb44caa3beaf8e3d64ea01e913ecc09430c36a97ca6fed64a6c51f62829d7bb7a8def9cfc719413b9066817d0256e77570db02672849899f758cb31132278bec04c8e75dbc5c3b7d699080cf0951086b993d9bc3f0697677b5642802edbaa46c1

Execution Payload:

Parent Hash:

0xcffdeac38e9f64ecbc5d470a4358f48a03da98a7df840197bd406bd0751ee056

Fee recipient:

State Root:

0xa11f2cb1e351bf3ca6b85202925e3c34c73aef2879892811f4395da7b98bb1cf

Receipt Root:

Logs Bloom:

0x00000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000

Block Randomness

Block Number:

129356

Gas Limit:

30000000

Gas Used:

Timestamp:

1736305680

2025-01-08 03:08:00 +0000 UTC ()

Block Extra Data

0x4e65746865726d696e64

Base fee per gas:

Block Hash:

0xc1ef1a46845382801d27583b6ee8e86d35eaba314edeeaa3b0166865e1b6e057

Transactions:

Attestations:

Votes:

901

Voting Validators:

901

Voluntary Exits:

Slashings:

0 attester & 0 proposer slashings

Deposits:

Showing 14 Attestations

Attestation 0

Slot:

139189

Committee Index:

Aggregation Bits:

11110110 11111111 11111111 11111111 11111111 01111111 11111111 1111111
01111111 11111111 11111111 11111111 11111111 11111111 11111011 1110111
11111111 1

Validators:

8841 12041 30411 12395 27491 19171 24070 19241 7328 2301 23228 14657 30461 3364 4325 20576 17423 28637 14637 14085 26343 6449 16737 23611 15190 18756 14332 18592 15294 7594 17935 16017 4846 27973 10483 20403 6614 28092 13591 10321 29947 9119 16775 8850 3849 22942 6981 4204 2622 12331 5399 21621 12492 29263 10232 9699 12741 12462 9558 3483 21103 8536 8572 25856 14676 8133 27522 28861 21760 21944 30305 1617 22233 4757 13363 30029 22559 9978 28549 16557 30172 27529 13117 14588 19128 23698 4531 19115 7194 28123 23402 1899 10852 10312 17982 14050 13540 2307 6575 10385 16486 6218 16447 29006 28853 23563 29248 23451 21347 17866 7845 14422 23028 5244 11980 10754 12180 30406 2885 23153 15366 22863 7130 19008 7748 20364 10218 4236 5624 18454 16222

Beacon Block Root:

0xa3b35d1bda4eb8b3f2494d0d532d0ff632d8cdf9e25fc2647b64020e5ab31b82

Source:

Epoch 4348 (0xafc230f76ccbde8cc9b3161d74831b9029229206a54697d0935d3eb9e949d1a4)

Target:

Epoch 4349 (0x8c199f1bd15252373f04fb52d406812f826c95bc746dc4ec962a546c35b84727)

Signature:

0xa401731f68843a344c2b391a2a88e137492a952c0b77b3b912243ccbc27c76f8aa85db3cc87773e4fe9e3afa105efcb00a8409e056a47a8c07a91edb5997b8de18fc24365763896e89781bd49bbc84c353d9f667388ade0a8342f9a6b26cd52c

Attestation 1

Slot:

139189

Committee Index:

Aggregation Bits:

11111111 11011111 11111111 11111111 11111111 11111111 10111111 1111111
11111111 11111111 11111111 11111111 01111100 11111111 11111111 1111111
11011111 1

Validators:

23866 10879 26181 21678 7779 12866 3295 5178 17525 18769 4302 12786 28443 6884 4220 18166 23678 10989 16523 6798 13011 5463 7584 6055 9127 11154 8316 13705 2204 14320 20815 3765 12584 2910 6964 11027 29381 19961 30344 16889 19053 11785 27785 8393 22934 11473 21553 11148 1051 9819 27802 18988 27181 9577 9886 16091 6702 21946 1772 2566 16933 25904 21508 29421 9747 25998 20579 23576 25629 22610 6168 10417 15609 23009 6785 7266 13185 13549 17515 1472 6171 12575 1027 1513 18584 8153 17346 18506 29893 5260 11461 11803 9498 21575 21906 9804 5067 17443 7900 19083 6644 12799 26659 29207 4370 17321 22026 21398 8981 28676 8254 28557 10727 28202 29416 7758 2520 1952 5867 30038 5610 16186 2542 11426 23314 26691 21211 19819 28153 17594 11207

Beacon Block Root:

0xa3b35d1bda4eb8b3f2494d0d532d0ff632d8cdf9e25fc2647b64020e5ab31b82

Source:

Epoch 4348 (0xafc230f76ccbde8cc9b3161d74831b9029229206a54697d0935d3eb9e949d1a4)

Target:

Epoch 4349 (0x8c199f1bd15252373f04fb52d406812f826c95bc746dc4ec962a546c35b84727)

Signature:

0xb6fbbeaa489b5618be5ac02ecfea31fb7088e34d154ab7c66aae071eb645d87a0c6145b09316e440d67c342ea263aea014abb65fb462a8420f3772cf821b0fb9aeb8f01f83a3e0dd95e6344993c29c0030f0816588f2487571e6ffb977781ba3

Attestation 2

Slot:

139189

Committee Index:

Aggregation Bits:

11111111 11111111 11110111 11111111 11111111 11111111 11111110 1111111
11111111 11111111 11111111 11101111 11111101 11111111 11111111 1111101
11111111 0

Validators:

1345 7809 29601 14597 9858 28395 10048 20520 2160 27750 5057 14089 11019 23792 3614 28485 10068 29004 26318 27863 29818 5278 13782 7394 11988 9286 11322 8456 3311 3071 23211 23536 30048 28398 1855 21013 6429 1604 3191 11952 16842 12662 20552 13767 20538 1906 2771 19913 17875 8776 16110 6377 8055 12317 1599 18452 28070 7608 4178 22060 27371 11619 20264 20627 19224 23467 13870 10778 8334 9981 30246 11199 19143 11685 8825 11553 25695 15527 18430 10026 17480 1100 2026 20834 7635 25643 19653 26735 15740 23918 27579 29739 8346 22749 29921 2004 15109 15376 29887 8667 9831 17353 24079 30433 23227 25501 6028 4008 28071 15157 23339 11013 2937 25796 15509 7678 18759 16781 29039 7744 13004 30405 22731 22531 10632 18087 9351 30685 2353 11860 27820

Beacon Block Root:

0xa3b35d1bda4eb8b3f2494d0d532d0ff632d8cdf9e25fc2647b64020e5ab31b82

Source:

Epoch 4348 (0xafc230f76ccbde8cc9b3161d74831b9029229206a54697d0935d3eb9e949d1a4)

Target:

Epoch 4349 (0x8c199f1bd15252373f04fb52d406812f826c95bc746dc4ec962a546c35b84727)

Signature:

0xa407f893b081d8b7f3f37e92b74c6bc7eac5f620301021cf5397c4a230504779e0eb0b91ade6f5d3a848f215fc95bac30eb1910f9a2d5d737c21f75ba9f69a08cb8452a11bb232190961d4ab5150e471e038b162a72916534893caee2b4e31cd

Attestation 3

Slot:

139189

Committee Index:

Aggregation Bits:

11101111 11101111 11111101 11111110 11111111 11111111 10111111 1111111
11110111 11111111 11111111 11101111 11111111 11111110 11110111 1111111
11110111 1

Validators:

20646 9818 5369 5895 27675 27613 6967 25397 16077 15599 3022 28997 11064 28521 16053 16875 3822 5615 19444 2758 5056 21037 30059 23454 13935 10903 4327 29007 27535 10641 25793 28109 1420 22694 12155 7474 27753 29755 29822 5779 3911 13763 27223 8864 17764 4300 13394 28989 3149 6340 14217 10527 5546 19203 27071 28081 30138 22544 10178 7968 7009 8882 12499 23464 12073 22108 16307 2406 19227 18445 18059 20866 18405 3612 19679 4649 4913 12292 20746 28312 16997 25211 23914 20039 29948 23702 23080 29200 29272 29178 7737 15883 30475 18332 11405 3463 20863 12559 5107 16274 23421 6793 23862 26576 18227 27121 18276 5183 9009 12167 17852 9989 30091 28024 11913 6187 29955 11727 8144 11546 1299 18194 14646 20022 25982 26464 23324

Beacon Block Root:

0xa3b35d1bda4eb8b3f2494d0d532d0ff632d8cdf9e25fc2647b64020e5ab31b82

Source:

Epoch 4348 (0xafc230f76ccbde8cc9b3161d74831b9029229206a54697d0935d3eb9e949d1a4)

Target:

Epoch 4349 (0x8c199f1bd15252373f04fb52d406812f826c95bc746dc4ec962a546c35b84727)

Signature:

0x8da7ccd1fec043ff327b3014a7fa77353d28533588b3474dd3c2e83f5ffb545a592b2f115c8d777252d01b2b5fe9eb2d1845bf34ca732f96daab2bc0dff031ace55f43da60f5531dff81b9d207d77049d9d1e8b4e748bcfd981dfee178249df9

Attestation 4

Slot:

139189

Committee Index:

Aggregation Bits:

11111101 11011111 11101111 11111111 11111111 11111111 11111111 1111111
10111111 11111111 11011111 11010111 10111111 11110101 11111111 1111111
11111111 1

Validators:

2005 22900 17045 18738 25902 9394 14900 12732 7216 23708 5489 11444 2930 20320 11072 27717 17415 20546 5909 9077 8096 23385 9881 28809 13634 12051 20789 20297 9002 8911 12525 12815 11393 13883 11600 9099 6321 25429 4100 4186 14585 14268 18866 19888 21855 13719 2039 21999 8054 16339 7852 2199 17894 1267 8725 7196 3713 8581 22672 20009 15174 21703 18685 18722 17612 9402 2488 25681 20693 8689 2738 19744 12001 16133 5365 13378 8076 21609 1271 28828 7553 3116 30528 6797 19884 21511 11300 13084 11369 4512 13908 17009 9153 17851 17410 11098 8233 10120 29287 1050 2807 13228 29744 16383 19461 25702 29460 16637 27854 8917 1515 3344 3791 20094 3724 17028 8994 2871 22416 12675 26599 9561 27140 30226 3275 12326 23644

Beacon Block Root:

0xa3b35d1bda4eb8b3f2494d0d532d0ff632d8cdf9e25fc2647b64020e5ab31b82

Source:

Epoch 4348 (0xafc230f76ccbde8cc9b3161d74831b9029229206a54697d0935d3eb9e949d1a4)

Target:

Epoch 4349 (0x8c199f1bd15252373f04fb52d406812f826c95bc746dc4ec962a546c35b84727)

Signature:

0x8404991fc5662978d8fd089367120965cd0c32cc1ed8550274abd52693076d3eaa3aeabff4f9016763e6f33fbc93e545166faf86c73f89652b246284457cf7ca3b373f28f917cc66df6317fd1b40a0aa4b58f8192495b2947c46c19b44fce100

Attestation 5

Slot:

139189

Committee Index:

Aggregation Bits:

11111001 10101111 11111111 11111111 11111111 11111111 11101111 1111111
11111111 11011111 11111111 11111111 01111111 01111111 11111111 1111011
11111011 1

Validators:

7644 1758 1252 19436 26025 14957 22796 2382 6551 16146 5972 5570 17385 2924 29972 30145 29897 25728 21144 29402 30689 7706 21659 11472 14017 15981 6883 29299 25248 17720 5749 25514 6819 15247 21785 8910 5068 23018 22516 25672 12592 14606 15574 30276 14097 18278 13432 6978 22953 23175 9383 5637 27594 17144 15023 23969 14246 12188 17547 17951 4434 17854 30645 26687 11521 20830 29259 21152 21696 15767 20065 26940 3176 20793 9064 1890 26289 1898 17578 18702 29088 11749 16660 19385 2299 11216 29330 3873 28436 13601 4929 6307 4541 20989 15531 27408 27139 19657 4848 2694 12737 7947 5602 10273 14524 27518 26770 7707 27804 10698 15104 19532 5034 16594 21032 4769 11941 19220 11196 16317 26704 25935 18337 24088 16815 25164 21859

Beacon Block Root:

0xa3b35d1bda4eb8b3f2494d0d532d0ff632d8cdf9e25fc2647b64020e5ab31b82

Source:

Epoch 4348 (0xafc230f76ccbde8cc9b3161d74831b9029229206a54697d0935d3eb9e949d1a4)

Target:

Epoch 4349 (0x8c199f1bd15252373f04fb52d406812f826c95bc746dc4ec962a546c35b84727)

Signature:

0xb37cfd078d69f84252d4aaa88f1fbc4f8ee1efb91d7db966134b5e4c3d37c2e57016d3f68d9bf69c3cf6cb12899f8dac168034369993825248d56f1c4ecd1cdb2a31678bb077dabf3c6be9396ca57fa4c43375e7f86eaca731642342c2468b4c

Attestation 6

Slot:

139189

Committee Index:

Aggregation Bits:

11101110 11111111 11101111 11111111 10111111 11101111 11111011 1111111
10011110 11110111 11111111 11111011 10111011 11111111 11111111 111111
11111111 1

Validators:

9257 23272 14895 23615 14842 8818 1131 10363 5305 10779 8519 20926 19719 1577 17554 16964 2203 15792 23025 10813 11931 23630 22693 17011 3076 18765 16006 15524 14423 15070 10166 22266 13245 23271 11729 29159 10906 19497 10696 5208 5055 2274 19022 17968 9146 19792 4172 16103 15341 18025 13698 26931 18872 22751 11563 28324 11698 3662 19471 15845 7098 6652 11298 18500 6976 4826 19003 15129 5465 18884 27839 15502 12296 21429 6201 13611 18880 4011 11914 29142 28307 13102 20563 14725 3581 22011 13314 3929 3240 27698 15763 14300 15309 8781 11925 3790 10287 29201 15355 1426 7197 20913 6913 8579 21671 7235 5522 18511 8914 6316 14960 22500 16163 15171 26450 2260 9307 28144 28974 7759 9003 26400 12707

Beacon Block Root:

0xa3b35d1bda4eb8b3f2494d0d532d0ff632d8cdf9e25fc2647b64020e5ab31b82

Source:

Epoch 4348 (0xafc230f76ccbde8cc9b3161d74831b9029229206a54697d0935d3eb9e949d1a4)

Target:

Epoch 4349 (0x8c199f1bd15252373f04fb52d406812f826c95bc746dc4ec962a546c35b84727)

Signature:

0x839e110b19d55498f6d2e29d785e34c6e11d05097e1c47accdcf72fb7e9b22db8a293e297ca862a5888fcf3e7a48cbaf0254d69ab751ea79f8503722d3ed8c484a9efdb0dda68d9266ec9a3e69231e0c7ed65bc09934617759eba23db5738db0

Attestation 7

Slot:

139189

Committee Index:

Aggregation Bits:

00110000 00010100 01000101 00000001 11000000 00001000 00000000 0
00011000 10000001 00000000 00001010 01011100 00111000 01100010 001
00001000 0

Validators:

Beacon Block Root:

0xa3b35d1bda4eb8b3f2494d0d532d0ff632d8cdf9e25fc2647b64020e5ab31b82

Source:

Epoch 4348 (0xafc230f76ccbde8cc9b3161d74831b9029229206a54697d0935d3eb9e949d1a4)

Target:

Epoch 4349 (0x8c199f1bd15252373f04fb52d406812f826c95bc746dc4ec962a546c35b84727)

Signature:

0xaf8172a8e9e6b98959dc8f2e1bb64f160084425f5365410391fe26cf6e0c6a4e83969d84098157bc0fed96c4542d0a7608946d99420ac469735919284059ab43a339640a01d1a8528bc23cb9140b4d0f245f1a0f7aed394f839909b239821eab

Attestation 8

Slot:

139189

Committee Index:

Aggregation Bits:

00100100 00000100 00000000 00000011 10001001 00000000 00000010 0
00000000 00000100 01000100 01001010 00100000 11000011 00100000 0001
00001000 0

Validators:

Beacon Block Root:

0xa3b35d1bda4eb8b3f2494d0d532d0ff632d8cdf9e25fc2647b64020e5ab31b82

Source:

Epoch 4348 (0xafc230f76ccbde8cc9b3161d74831b9029229206a54697d0935d3eb9e949d1a4)

Target:

Epoch 4349 (0x8c199f1bd15252373f04fb52d406812f826c95bc746dc4ec962a546c35b84727)

Signature:

0x94e5659241e7f7adea36cf4ef6bef6215da47a21d19a9b029c5c0c235fac90541e88e2bdfe0d3f59849c7100f832a5ba0ad03a5a6e62a783f8b8e3a174c876ea66a135b060c01d850a0b6aa823e637931876f3aad6aad5152ce8812a72fee686

Attestation 9

Slot:

139189

Committee Index:

Aggregation Bits:

00000001 00000000 00111000 10001000 00000100 00000111 10100000 0001
00010000 00000000 00000000 00000001 00000100 00000000 10000010 0
00000000 0

Validators:

14957 29972 30145 29897 30689 14017 15247 14606 15574 30276 14097 13432 15023 14246 30645 13601 15531 14524 15104

Beacon Block Root:

0xa3b35d1bda4eb8b3f2494d0d532d0ff632d8cdf9e25fc2647b64020e5ab31b82

Source:

Epoch 4348 (0xafc230f76ccbde8cc9b3161d74831b9029229206a54697d0935d3eb9e949d1a4)

Target:

Epoch 4349 (0x8c199f1bd15252373f04fb52d406812f826c95bc746dc4ec962a546c35b84727)

Signature:

0x98da93242eb30dff9f608da104eeb6abd5487cfff460b55f0a8f26e33d7ede291236faef0824f3d173da47e70a903794189b7b993781a5e8d6eb2600efc23851630e6c94c65860524b83d805b3cbedf300013e64ef39f13ec5be12307fa06ff5

Attestation 10

Slot:

139189

Committee Index:

Aggregation Bits:

00000000 00000100 00000000 00100010 00000000 00000000 00001000 0
00000100 00000000 00000000 10001011 10000000 00010100 00000000 0
00000000 1

Validators:

28997 23454 29007 28989 23464 23914 23702 29200 29272 29178 23421 23862 23324

Beacon Block Root:

0xa3b35d1bda4eb8b3f2494d0d532d0ff632d8cdf9e25fc2647b64020e5ab31b82

Source:

Epoch 4348 (0xafc230f76ccbde8cc9b3161d74831b9029229206a54697d0935d3eb9e949d1a4)

Target:

Epoch 4349 (0x8c199f1bd15252373f04fb52d406812f826c95bc746dc4ec962a546c35b84727)

Signature:

0xb18c2c5c5b1a0fc7fe0d3e70e31d731c29539d29c6afdafa3366699e6ab0001db08ded76c9ad4cb1200f41383304d5430aa15511bfaaa47c03131a808016b765b62bb9c731c5941251655989c8151947093c824ecdf562897686b00c78bea0dc

Attestation 11

Slot:

139189

Committee Index:

Aggregation Bits:

10000000 00000000 01000000 00001011 00000000 00000000 00000000 0
00001100 00100001 00000000 00000000 00000000 00000000 00000000 0
01000000 0

Validators:

23866 23678 13705 14320 20815 20579 23576 15609 13549 23314

Beacon Block Root:

0xa3b35d1bda4eb8b3f2494d0d532d0ff632d8cdf9e25fc2647b64020e5ab31b82

Source:

Epoch 4348 (0xafc230f76ccbde8cc9b3161d74831b9029229206a54697d0935d3eb9e949d1a4)

Target:

Epoch 4349 (0x8c199f1bd15252373f04fb52d406812f826c95bc746dc4ec962a546c35b84727)

Signature:

0x97176b2e1e828b4a98580659b5dc4031069f539bafad5c9a49eaa2698faf7a58ab32231600b7d84cca55daa51ac2021910245ee04838a3a3c973b27303ce79da2537dd5119239c07758666426b1597b92ff90fd9bb4645375f9153f14f88ba08

Attestation 12

Slot:

139189

Committee Index:

Aggregation Bits:

00000000 00000001 00001000 00000110 00000000 00000000 00000000 0
00000000 10000000 00000001 00000000 00000000 00000000 10000000 0
00000100 0

Validators:

20320 20546 20789 20297 20693 30528 29744 30226

Beacon Block Root:

0xa3b35d1bda4eb8b3f2494d0d532d0ff632d8cdf9e25fc2647b64020e5ab31b82

Source:

Epoch 4348 (0xafc230f76ccbde8cc9b3161d74831b9029229206a54697d0935d3eb9e949d1a4)

Target:

Epoch 4349 (0x8c199f1bd15252373f04fb52d406812f826c95bc746dc4ec962a546c35b84727)

Signature:

0xb1c5efea12d6447ff0b5f9c8c7d5682c25d3444f1eb992933f06350fd3a0b4ba1b9c27cdbee21843f58c5cbb82037dff0d949dafda16c02488ce9bdb2173dee68d043aa0ba696f2dbb9ed0d99a80b2625557fcacc70a32347ee13aa22905077f

Attestation 13

Slot:

139189

Committee Index:

Aggregation Bits:

00000000 00000000 01000000 00000000 00000100 00000000 00000000 0
00000000 00000000 00000000 00000000 00000000 00000000 00000000 0
00010000 0

Validators:

20576 20403 20364

Beacon Block Root:

0xa3b35d1bda4eb8b3f2494d0d532d0ff632d8cdf9e25fc2647b64020e5ab31b82

Source:

Epoch 4348 (0xafc230f76ccbde8cc9b3161d74831b9029229206a54697d0935d3eb9e949d1a4)

Target:

Epoch 4349 (0x8c199f1bd15252373f04fb52d406812f826c95bc746dc4ec962a546c35b84727)

Signature:

0x898ef83be5075018d1fa50376b3be260f59ec60c6e61165d630d3cba49de01f24d2c55eb22cb03d2c09a2798b5aed4c2031a7e307ab720f8e0b4cbab366c8d187539da73be170f634bd2ea9812cd2370b39a17208805c342fe2efb9b15ecb339