Loading Tool

Block IconBlock

000000000000000000144827d09810dbe5a2ca0fb127405a923cc442c9e25007 Copy TXID Copied copied Failed failed

Summary

Height
509,961
405,363 blocks deep
Mined
ago
Size 1.00/1.00 vMB
Transactions 163
Bytes 1,000,479.00
Virtual Bytes 998,296.50
Feerates 1548 > 5 > 2
Block Subsidy 12.50000000 BTC
Fees 0.05949822 BTC
Block Reward 12.55949822 BTC
Version
20000000
0
0
1
0
0
0
0
0
0
0
0
0
0
0
0
0
0
0
0
0
0
0
0
0
0
0
0
0
0
0
0
0
Previous Block 0000000000000000005c60eb25d28b31406361a7d2afb683109584ca11462e2a
Merkle Root 3714aa01e72bc3d20c0ec17f579fc43d36cf5d49ee7996a36146938db1f3380c
Time
5a8b00b7
1519059127
Bits 1761e9f8
  • Target: 00000000000000000061e9f80000000000000000000000000000000000000000
Nonce
b266a11e
2993070366
000000202a2e4611ca84951083b6afd2a7616340318bd225eb605c0000000000000000000c38f3b18d934661a39679ee495dcf363dc49f577fc10e0cd2c32be701aa1437b7008b5af8e961171ea166b2

Transactions (163)

Index TXID Size Feerate
0 15e3240e02765e054da1d3489d1c30ab29cd943941fc2e2ffdd158e63d8795de Coinbase Segwit 216 vB
1 83c3fa501fa732048487fc7bc69ea36eacbef4fe9dbd55bba62ebbf467428637 226 vB 1,549 sats/vB
2 7377e289051993bb437d0e8418f8d6860e1bf9f02fd90570009a64d5cd03f24f 224 vB 601 sats/vB
3 b3dc23c0c7666d260ba1c8f683cb4a073084f0aa7c547049b67f61dc56ddab44 Segwit 190 vB 421 sats/vB
4 fb364e7490af5f4b931dc608263dd7518dafbfec599d776315ecdf92948991ed 667 vB 301 sats/vB
5 ed7f1c727ee6ebf58969dafa6612d28d4ee0500247d715acf20ece27641f5028 258 vB 194 sats/vB
6 fdeb4966c34fb0d96c4b9c837a7c310e5dacd0ae5b7052693a0e749ec7cb33d9 190 vB 150 sats/vB
7 5c7bcfdb682deec4b897e15bdc20836bac563909e1935e050645a00a8830c4a1 405 vB 138 sats/vB
8 6254db814a8fcc76d8384484dfd6547b4da4ffefabec53ad28dece4ef5a767fd 191 vB 129 sats/vB
9 8e386dd111c55e816b5769080c0e8a0a085647d38aa011a00cd4bbadd131749b Segwit 470 vB 129 sats/vB
10 5c8607ca43631d5e624481be6aaa06216569d3633c7bbfa54ac0b22e359a01ed 192 vB 128 sats/vB
11 1f192367dd8e61cc13854301fb63bd8ec6e23b29328d520d439f6b0af6233869 339 vB 121 sats/vB
12 5e7f6a2b42ae24e035c60205387e5d14463c43dced1365920b92531b69ccd676 487 vB 118 sats/vB
13 3f737ee1f07fb9bd4eef5577bc63a0b76fc3ff417485749fe353b4984889ca31 6,866 vB 115 sats/vB
14 b96c94991c70656c6d01764557dcc265d96b0fa20898ef0129d14c9cd35053d9 Segwit 317 vB 112 sats/vB
15 22fc67ec1727600adb0502cb30fabd6a2c27d643b77b738e1978bf85a27af239 223 vB 102 sats/vB
16 3619745865882da9a0569de29eaf3b17825408cec4141db4d572c5c712e38354 225 vB 101 sats/vB
17 28dfc77a8802a394ad57dae3c48d469dc8dd152c5aa4d3ab088a9ebc943a0327 226 vB 101 sats/vB
18 d376b02386d4f93d76f55f0b470bda671ba5ce22c1407479ee4393ea62e572a8 520 vB 100 sats/vB
19 3cf1b424cd3cf2a03b992089aa7f0519109c65369968e2a6b69bc13b52f1d594 256 vB 89 sats/vB
20 33df9d43ed5b2b213998a22d9218a0bc7d9de56e1ed8a1802d9c968ba1b76c4c 226 vB 88 sats/vB
21 dfc05ab3b7b8c90f68d37340f28b67b28662ec44d6c2a2335d0c8381cf73f7f4 226 vB 83 sats/vB
22 caf5068e779d2e1793767bb53e6d4bba8a3d28d1aa3d375b8d107b35faddafd2 486 vB 75 sats/vB
23 79f7baee46223cd5c13d1e155e023d75445479de92a9ebf25c100392afe408ea 257 vB 75 sats/vB
24 1fd21c9bffc8bff3272f1afebcf5ce4530537031bd1ccc369f956081ca59b3ac 744 vB 60 sats/vB
25 d8cc58d5a78099c81263314c799a385df7b2525c67caebde847ddbd050ae6fac Segwit 134 vB 59 sats/vB
26 d46a778149d6b47b2be83542ca6a726f126d1804ae7af6524bb0679440d80666 226 vB 56 sats/vB
27 96702c9011ab957d243003d24a401d64a9ecc254aad51a30e01786b42d239edd 226 vB 50 sats/vB
28 b8197d5fe57681c11a3b603b739886b364bcb2bfa9773108c7d49c6987be95b9 12,104 vB 46 sats/vB
29 456f0364d3395704344fa73c6e5102335808eb670d0117436698ed1284ac191c 249 vB 42 sats/vB
30 76142328f5b46974011cacf2f72530343859407da2938be496c1287ba25e176b 370 vB 24 sats/vB
31 3492b9a40ac1b4709576b3c4b11cbe36f5280dac2a89b6ac6cf633b6857bb2ef Segwit 227 vB 20 sats/vB
32 ccfa59d33ff9d656fa7977d2b3a2a8cece5f69451b320ce54bb57c377f89a4e2 Segwit 441 vB 19 sats/vB
33 ad2bd41c5e1e6e2f12b61762f4845b4140ee0fea1b351fb910fdf70b0eab3ff4 521 vB 19 sats/vB
34 9e4c3554599af38d832fe63e44c30c58980fae40bdb3b38582a36d59f3334b9b 5,242 vB 19 sats/vB
35 bb395ff4d40a405ef301fe52d0b6c3cbf1d718c621dccf4d5b70182cdd2ba914 258 vB 15 sats/vB
36 fa001a2af96a03173ed9f8b88d413b31f3547b6bc7517e76374f0111a09af1af Segwit 168 vB 12 sats/vB
37 59372a7f7734a074460bda07e2be002fc6a9b3bc84f428a2fcb7bd20b88b7a34 223 vB 10 sats/vB
38 863def383891b0f8de4dc1069dbe02ddb7ea7b9423220e5a48930bb7af39fb84 224 vB 10 sats/vB
39 4452a27dc1858158f44f84c5a80132895e3a7decf006f061da258ad01b037b6f 590 vB 10 sats/vB
40 29b6795e43378f03b5b2c36f12ba682a47af082cd652e1bf1cbef3d9af1c1b57 372 vB 9 sats/vB
41 84dd39e0f66741d55ac56863adde9bd9e9f4f10e5597840dd649818118a75a51 225 vB 8 sats/vB
42 97eb38e4087e981b26f5f6847d35b3df5206c8d7c698ae508b7fe1327be74f9c 226 vB 7 sats/vB
43 f74e72f00cf16b5234367c66f56dad68caa7a0635dc5f8092526e852a59876a3 224 vB 7 sats/vB
44 02ba1bf0d6e2298d348f5efde444105b90f4f0ee7e539337899b2c8f928e6fcb Segwit 614 vB 7 sats/vB
45 6474e082e14bc8c843d0d0b435b7ca229d6eeb75c9e4f515fbab8927bef2a7b0 Segwit 214 vB 7 sats/vB
46 3f5028acb84c9dc7881e99e02f3473c7ca4850cb74ae09fab45b225e47edffa7 223 vB 7 sats/vB
47 da43693f699c26454ada71c8db61787b7d3ed2dcddbd4f9235b2afab7869b82d 225 vB 7 sats/vB
48 90d0b2eb69eb3d17c2dd0987bcc64344953112466188a9893d0965ed06a72f58 225 vB 7 sats/vB
49 ab0eeb2012f03de68d61dee1c93f598a92261211fa28fcbdff1b572192765cb7 225 vB 7 sats/vB
50 8514429abfd7a07809e206cd2f5e4af32e3d43df4aa8e8e1bef072f4852aa6a4 373 vB 7 sats/vB
51 e8da6c823968b70c492731ce72073487a2f9862561023c4566d9e214e8fcaf2c 373 vB 7 sats/vB
52 2d8c84876814603179ec606217087a92f35b2a258d9268fad87275f7fde3a025 226 vB 7 sats/vB
53 67d32522a0f28d41f94abf8ca74034f40c9d8d846cede6d2055981467378e46e Segwit 214 vB 6 sats/vB
54 67b22bd85636654d873e7d49a6170d42e8bb2c9bdb9b4c2c9b4c42d2110c3fbd 582 vB 6 sats/vB
55 de501894b4461fec96c159f74732bf3056104f97a5e6ebb72675a2d9a1cebca8 191 vB 6 sats/vB
56 6e602af012c51fd8687919e5411fd72e3116ad7f31d40661487c38dbc2153c31 Segwit 168 vB 6 sats/vB
57 e7cd38e8929112b221c9b45ed59d425e4a2c78755ff8099e4fb8932f173b25df 339 vB 6 sats/vB
58 ac5904dc49288522c1dcfc49cb3c2a4a9b5da8ee15d5eeffe50e5999edf4d393 635 vB 5 sats/vB
59 76d35dea5c7e17a8569e07c08b2962406147228084d0e5a2c1be224a3c3fd62b Segwit 168 vB 5 sats/vB
60 83555a49320b5ebdc94d63df78f4249e7f00d92a001d0ea26ce65cdcc0bee3ca 407 vB 5 sats/vB
61 c9fc39fce60ee1acd9527f1193f0ebba27ecee40fccd2f8485e846b26b8a1a4c 224 vB 5 sats/vB
62 86cb27e5ac11398d87a44ed864d2aa248a9b8ead6c9753d2937794cecc754b7c 813 vB 5 sats/vB
63 0bd1b6afe5ae29ce0006dd30f0cd176ec638cecebbfb5d7f2dc03d5a05add001 666 vB 5 sats/vB
64 e357679f060b272ff1a34189427a9403c0fe3857a1f7e47b80935a5e7413c4a6 372 vB 5 sats/vB
65 eadcf3a21e12c1b13ba273f96ad5364a369b8d23d96238d13893b2c560779bd9 372 vB 5 sats/vB
66 aad921c3a5c75d863943f6cc29e2e9a2d6071d61b55c0264e327d6ff0a74424a 225 vB 5 sats/vB
67 303a70ead78f32e594d72ae54362be2ee438dd8daa75d60d7b9b42fe30774e70 225 vB 5 sats/vB
68 a5933ccdc54fa11ad09cdab7e11cd211c580ddfacd8739171c7196cccf14d784 225 vB 5 sats/vB
69 665999261ec98d4a6ccf9c992de95f30bd5bd335a8d8e834e6244f950693908d 225 vB 5 sats/vB
70 f4e459bcdb6f3fe80188d8d404804d77d4704804046f3dd8228e0fe7f5fd95a2 225 vB 5 sats/vB
71 667d02eb3a9a0465fe3c1e5f45a1570f1a573acac207f56c2d79edc35c800b59 1,406 vB 5 sats/vB
72 837f7dd3bed699e5af7b198f3bd9a4ea5fa3646c6eb10aaa2a04412b319af317 373 vB 5 sats/vB
73 779a40d0f22e1269f395eb32b428cd045dd95c12dce525e934c69400f067fb26 257 vB 5 sats/vB
74 e9fd6b2443dc48a86d4dcae8ad1f07628ef5066628dada32c65a49780a74aa0d 226 vB 5 sats/vB
75 13ecba8b3dea4ae5fe169b6af7676a1641a7fbc55117110a18863c1c43363a4a 226 vB 5 sats/vB
76 30c4aec956afb2190d34dcc3743d2f480c66f6b7b241205747cc299bce26fb4f 226 vB 5 sats/vB
77 1c5750d9bd6186507bbb1ad23cb99d289bd8a0440a4bffa2df523a9d50155e6c 226 vB 5 sats/vB
78 f41cb14a8c1d6d1ef8e7cd514eb3fbac151cd429ea56c901152aa3754deda682 226 vB 5 sats/vB
79 8c1756d73550bffb9ae6ef5c1a761260ea1332d0a49ad8e3e2fe6e6f8baff99e 226 vB 5 sats/vB
80 dd815dbfcc38225217d4e6b3ad44c31387b3461df6685c3b2c6d291e4993d3b3 226 vB 5 sats/vB
81 b1db15943b8ff5e149867a3252dedc73572fe0484d6afefcefd531859888a6cc 226 vB 5 sats/vB
82 933341bfe423fd06f24b90239c4d9c16722c14624ba087140aa719d6f4df0e2a 224 vB 5 sats/vB
83 f0dd729255afd89bc81c35523d26920a9a0c77fb68aa1711bc1a9756463a5b9a Segwit 258 vB 4 sats/vB
84 761a647de79d741d0b93d48ad653a85254761cb56308662aed2142186b178c58 258 vB 3 sats/vB
85 44e90d5046b7b98a6b4100d3587f34fd31dd9264a26c53ca75ee7c9355260b5f 15,940 vB 3 sats/vB
86 8f8e9f7d1bc460a2aa3268343145ac2a82830014a3844f1c9c7b2c2f9f6a7fe9 14,824 vB 3 sats/vB
87 8073d6318d0320f5b55bc768641559ff6379597f979bb399df3439ad547ba0d8 15,143 vB 3 sats/vB
88 6de7d5174f68b561f589be2f6d33ebb381f8dda37cecf133b0236425af966706 15,462 vB 3 sats/vB
89 420efa27bfb65f09dec899afd3c80a38f3f3e18a43fc5c241b80dec5772679b3 15,462 vB 3 sats/vB
90 898701c8d52aeb9a136647cb4cfe7acdc4f9f11d4d77ca4b4edece7ecb07c4a7 14,920 vB 3 sats/vB
91 cb7d92cb07ce018b3aff6208a8a583aaebbcdd55f97793d4423d20a85de87624 15,781 vB 3 sats/vB
92 d021a0b253ce9558ecfe603a9187d444a27c811f5fca9762b50a0db555b4a7cc 15,335 vB 3 sats/vB
93 51b9db73c18559513dec142a64f3eabdb739b8db91ff782a58e73b69e7a42c20 14,793 vB 3 sats/vB
94 1f522ecde69c9155257fdb0b14de8de8e5ed5a6bb685a5d8d81ec2447d223526 14,793 vB 3 sats/vB
95 01b23e5cf871110aacd5b26c3168a3d21aebf077fa44f45670f0f963af244527 14,793 vB 3 sats/vB
96 8679319d48a8fe20ad61f195cc805519bc0a800f257ada76ade688c710928c68 14,793 vB 3 sats/vB
97 d5377bf7d3f10737718bb2cd1ac8cdcb6eb3662d0a96a27e42bb61f033d4b292 14,793 vB 3 sats/vB
98 18931b4a82177523d9559fd5070a77ff12693b46b0b81a5bac691d2ccb75cfab 14,793 vB 3 sats/vB
99 abec274f21bc214ebabe8a58fbd242684212e3e98a9b1bbd5ffa8ea7ad6184b4 14,793 vB 3 sats/vB
100 8af91bd5a318b92f2a2b4442316a45eb52ed2d6a93aff8ff1097959c902fb578 15,654 vB 3 sats/vB
101 dae30b073447f74a37bd9284f6134256b54e554e243207cf911d9255e726186b 15,431 vB 3 sats/vB
102 1f4016e70be9536e0069f22f6e0ac48e3fb959986a5dd32058dadab218511ccf 15,399 vB 3 sats/vB
103 c8cd26e31b127f8aaa1780c2922409fc40ba3f2032e3b6220c36e64ceecf5149 14,889 vB 3 sats/vB
104 d3204d1856946c3a5798365c2395de563eb4db840c405ec06eaceba7b640d926 14,825 vB 3 sats/vB
105 377cf17420f2d4d295d145c72df1e696e19e2a7635cc8898dd00c3424d2a6b3a 15,176 vB 3 sats/vB
106 26c32c98e255d8271e6f6c73def49a49e52c067a2ef12e124439645f4ea36e74 15,176 vB 3 sats/vB
107 337145d15ee36dd85ae8d52b80ba77b526ad43b0037d310f8d4d594786459b7b 15,527 vB 3 sats/vB
108 934c1b78480d0b3705bbf6a2c1367cc9dfe43c0d2856da48bae9f5361350e29a 14,921 vB 3 sats/vB
109 4f341e3e2fb13921b2f08d3d56df9b47f8aa75741ea0f3b0dabc1523ca841fdd 15,336 vB 3 sats/vB
110 468353e8deff0f904424e90808f0f0765625c06650fcabdd3e41492af23619be 15,655 vB 3 sats/vB
111 ea820885b77d3111a68f09b3ecffb5f93eb3c56daebb0762a4ecfe0f37078721 14,794 vB 3 sats/vB
112 5e90e532e080ee34dc7cb5ee7ccb2947facf8822dbffd2d2b586b1db66bdde96 14,794 vB 3 sats/vB
113 ff733da9a6fe0569c73f8d9b712594f549de7b08ce36b78657ce7ca944ff42ae 14,794 vB 3 sats/vB
114 19f4da373ce693f9f2477bd0a8282a4ab875f2b89b0e9713756ef633f04f0964 15,049 vB 3 sats/vB
115 f0663290bfffb8628fc4cb07f25c66052e85054626e502f5787aba4168e1d4d9 15,049 vB 3 sats/vB
116 c88713d1b670aa85e8810e5ab2d2ec0724bbb58d5560b4d80e3f4255ed03404f 14,858 vB 3 sats/vB
117 449d9ed459f360145c4be861e5aa34e4bf6219fc4955ab15dfb9ef72990f5a28 14,826 vB 3 sats/vB
118 67683c156f5fd9ed9322ccfb6979206dcdfcf862a7471f736c813cb2ab03d4a9 14,826 vB 3 sats/vB
119 afbb73862e703855fd3f5fedb2f5b4a45cf347dae894026d05e22b01168261d3 14,826 vB 3 sats/vB
120 a583a1babcdc239ae0ef10726cf97f971ce7d2fa2422b070322e870ad16ab558 15,177 vB 3 sats/vB
121 f51e2ef3c35c26ee2e083cd456bdf9a0ad2f26b3df54cb2eab4194e3c02dc0f5 15,177 vB 3 sats/vB
122 244e7944dd2dda8ed4039591593c47d2d283786fbf2589692b216bf6a165c1e5 15,528 vB 3 sats/vB
123 c4bd9085812981b797c9ec7de5878a492032de14e37c222122d4c3c418a796d8 15,496 vB 3 sats/vB
124 a142bc32eb897424f9c80bd2ad2b0878d2fd4b92eb8b263eaca4ab89bf75b26c 14,922 vB 3 sats/vB
125 1f68ac69c9669469292ab522ff28322506651b680574f830a4af032ffa97a050 15,273 vB 3 sats/vB
126 07768e4ad28008a960213d8e8d2a9c050067c6d60d22eb8b71b00c097abc1a7f 15,273 vB 3 sats/vB
127 a955ab455124f42364d46c2bd773c4edc843b2e5c28f5f420c994d0b02862714 16,421 vB 3 sats/vB
128 7c51ac35f9f9201e2a73013308739cda356b68cb58189911b8cededb9a8550e3 15,241 vB 3 sats/vB
129 e87fc99255045dbe6b86c8d5e5c8674b916bd1afcd8d87760fce9a45f188b5ee 15,369 vB 3 sats/vB
130 b42bac7ce2fa6e1a47135aba3fe7f04a3b1fa5e41e20fd74892954cde8e4c565 15,624 vB 3 sats/vB
131 3ee65582dc54e860cc2cc5db580ef99a91acbfacb68ee3e920f0fce63746403b 14,795 vB 3 sats/vB
132 f903ae0727a344f7c050fe36146e40428f492911db5577049ad198067dbc7285 14,795 vB 3 sats/vB
133 f8c3f52a11bf216999b39fa7c0ae548044e4caf59e84d177db5e0e66197d5af9 14,795 vB 3 sats/vB
134 9b3da0ef7ccf94698306e3180af647450dbb450bba6c25dd7dcfaf295f53e2dc 15,401 vB 3 sats/vB
135 60bc959f0089516ee23add13e79b167ab656412559d4cfe794dfdb99f06f8bf9 15,401 vB 3 sats/vB
136 cdece336bba603085c196cf3a608589e0ce2fa2178f4827984a58606aae8a89b 14,891 vB 3 sats/vB
137 1cbedcd7d84d62f11876e846ec6e73c4b4f28fceef1ffcea063f39c5f8b12b8e 15,497 vB 3 sats/vB
138 c77ebb7956bb6f08cefa6b6b7afc78fc52f39d1d15e5df0c798ae09bce5c7681 16,103 vB 3 sats/vB
139 52e2e3f918ecac83d4745f36d1c25661d22be7f5b92bd0a5624d9da0ceb63dbc 15,274 vB 3 sats/vB
140 c0b59d8f4cc2efd2ce48041dc2bfa2f9ff2a0b9ebe5c36dd71d870b29eff10fa 15,274 vB 3 sats/vB
141 0af3a26617e515813d660e1dad43f94e729bf6b11579fcec27a5df93c10ffbb1 17,443 vB 3 sats/vB
142 05c30c33830205b4e46bdccfe7d349514edd10ef34b9d5299a03fa5ea32ca220 15,561 vB 3 sats/vB
143 47604e0215d68a5b93b0c084ad713499abb1bfc0fb3dcb3a3471c3aae5d44c6f 15,338 vB 3 sats/vB
144 d7f5c4d7e651fbf1b957dfd0394db5458e923a6af110cab0d8bebf3cdb889f68 15,657 vB 3 sats/vB
145 33d70bcdf33bf0f630b5bca484abd2982b7d4deb1ded31bc1bde7e5c45faa00f 14,796 vB 3 sats/vB
146 d82fe8c25388bea9b35062cceb6756a5be5707adb7b7c90e72388190043c5c1b 14,796 vB 3 sats/vB
147 432813ef4163f9d988847671a64f13a04a9d26e89412e06117e41555d30ab2d7 226 vB 3 sats/vB
148 91f93635c6d3fc65c8dfb8ea7ace711bf6525972d2ff0ae343f441551a125ffd 226 vB 3 sats/vB
149 313157b283da7e941781b6ece6a89c0ecca9fd651696ff3931769578cb7a8e7c 226 vB 3 sats/vB
150 623be92f13c76324b716c2fd6176b916f99f1b09f41fa4960af279fc8bd474ac 191 vB 3 sats/vB
151 2b32fa3deac6ee8621db9d727a53726220bbfa0560abc221206fdb3eada8c9e4 226 vB 3 sats/vB
152 005be4c7dfc96f272e5f8bb05ab7127d7f2c0dacfd6d94b88705037710d38ced Segwit 168 vB 3 sats/vB
153 1db15cc6d271b900d47949bf059c730cc4bc1b4177a6a7abd466973c69700ef0 191 vB 3 sats/vB
154 caafd1f3b02d649066b0e30f3298bb0c1b1cd8ec865ff37cfacba8bfd99b06f7 Segwit 168 vB 3 sats/vB
155 9b81e1151b71b72c7eb4d83db0702e968cea31bb7f38cc8c520c715b15452df8 Segwit 166 vB 3 sats/vB
156 3be391f7f65b5d15de44fe0d36cab0a6982c61d29255b89ea3e97ffbd7e840fa 226 vB 3 sats/vB
157 e386701c0b568c7a87ab23f0fb6ac92d0142f0369703418215c9ff512f2e3810 814 vB 3 sats/vB
158 543a9fde0eb7817a7b4bf235e4fbf8c1276bfcb283e2725251f22bb168eb890f 225 vB 3 sats/vB
159 75f7364df111f841f29d63ddbf1d3e3ea3cd302a6a2556ebf01afb887d986773 225 vB 3 sats/vB
160 e193ae06c83bd07367e3268eecc4d94bef917001074272f13085bad0973fa8cf 372 vB 3 sats/vB
161 bebcf9c491216ed328f937139a8d3c3a9143eeb8faab4b8651ded3fd02d317ec 225 vB 3 sats/vB
162 c33431bf6efd5d2961a3233d99fbaa9101238b7f4373448476150c2e988580c3 372 vB 3 sats/vB