Loading Tool

Block IconBlock

0000000000000392f3f94edeab7b650ec4ede3d14b8b9a80d74ebc1d52503a5b Copy TXID Copied copied Failed failed

Summary

Height
222,859
689,396 blocks deep
Mined
ago
Size* 75,560 bytes
Transactions 173

*Does not include block header, tx count, or coinbase transaction data.

Block Subsidy: 25.00000000 BTC
Fees: 0.17300800 BTC
Block Reward: 25.17300800 BTC
Version
00000001
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
0
0
1
Previous Block 00000000000002d40e33d5ffdc37a1a285d80233076743a71b6b65966ad98392
Merkle Root f53c766ed409376d20d1453171a7327bc40c9060e5e58a985406feabaf900f22
Time
512a03ab
1361707947
Bits 1a04985c
  • Target: 00000000000004985c0000000000000000000000000000000000000000000000
Nonce
0b7d9b99
192781209
010000009283d96a96656b1ba74367073302d885a2a137dcffd5330ed402000000000000220f90afabfe0654988ae5e560900cc47b32a7713145d1206d3709d46e763cf5ab032a515c98041a999b7d0b

Transactions (173)

Index TXID Size Feerate
0 8ee6afc5dc2eb8b7ed483ff61e45446eb9571499811d321fd90dc294032fc902 Coinbase 138 B
1 477c9aa7cbef513f56212e004772a190ec2efff661aa01c24d21c009fa87846b 1,693 B 59 sats/B
2 6831e9715f8cd038718f841071faed2f7399a85f23d80d79b35e58ae327adafe 437 B 0 sats/B
3 2ccbf4b241c9cead80b3c1d3a7b101d1371a159c346de2b946a830589e2438f0 470 B 3,193 sats/B
4 d8f4785a45405ce6ca6a3b63ccde90399370a4356acbbbf93d2a808d7469bf1e 372 B 0 sats/B
5 96edfe83366af40562b460cc2a2bce3b8e21ecbd0a5f88b378c9d4b711cf0338 258 B 0 sats/B
6 b8b84a091f231733aecaef5b713139790a34280d0c70078f794cc755ccdc2032 619 B 0 sats/B
7 cfea2549b2e523e331a63dee00a4c00dbf801ef1d268315a87736e44305df5c6 375 B 2,667 sats/B
8 ad3f6cfd7afea6db325af0b622118be6ab4b2cefdb2fd0092bfe90490be58c05 259 B 193 sats/B
9 2dc1d8e9034609812513d8d913480608c083c35c607781f29abc807e4076a2d6 257 B 195 sats/B
10 3b03bb4fa85bb0d599284e34a04f0e9205f2c9c4c5e6aa14cd320a7e28fa80e4 259 B 193 sats/B
11 6a971e374d64758aa058716aa202b192c466df0c353f81f100adb6c1976aeb3d 619 B 0 sats/B
12 2de3846a9008cdc4151a035c5a575b85bdfaa099750d6ca679c3d4f72da5ac36 404 B 0 sats/B
13 46e79a2683a0bd04c0a46238296c5f28cc4f03a6a59d37e9dffe0b10caeecbc2 583 B 0 sats/B
14 85f7541e5c88d8335bcdf25e94fbd2486bc653f1e0b6a61c13317be96a518837 258 B 194 sats/B
15 6370b56bb78afd1d20ebbee2e5b567465ecfdf3d96a4121f7038f65c26df2a90 257 B 195 sats/B
16 48f0e3e3086bf4952b9e3e93ff1fb8ba66c8f59c39ee4ccca1eee019d37bdd9b 522 B 0 sats/B
17 d9e4d67e65402fe7bc36dd1b7e190e820ea8d43880ae8f2780ba4e4bb2cfd355 258 B 194 sats/B
18 3b4c36dc779292f9689e6e1a4fad84811704a58ecc0d582fb8438c3641682f60 257 B 0 sats/B
19 04d29ce8f45f154f1225031b301e9786284ce1ed209c6a83d7c6cdcf4d229dd6 523 B 0 sats/B
20 d7ec6cf40d49033940c8f68767f6b2561c7d44c54bd58f8f53a320be1f444deb 257 B 195 sats/B
21 8e1134b67f3ae3bd087ae69ce77143db4285b8fcd221f78302ddd03ef04aa1c6 226 B 442 sats/B
22 eb287c5b273471ea654050b5deb94e472f0887259681432dc9f556bf6b2d75cb 227 B 220 sats/B
23 3899f142fd291a3329da24ea233a94916ff524a721538facc63a6e7287d181cf 224 B 0 sats/B
24 2a71a8bf042fd2c2dcc4ad73e10c8bef085a389f5511fc6287e37a8dc7fd7fb4 258 B 194 sats/B
25 4086b2547f0389beaf00ecee2c4408cd8adc39486b137d33f99de2a29583ced0 1,110 B 90 sats/B
26 fed0ced4a6c62a3ed044a1c87d0a87b07f6c40e64136e19284ad2873b8b67a6a 257 B 195 sats/B
27 86899a88e8ba79871f921cd0450ca32401a91643fe50be4fb0ad1df8caeba5b4 617 B 81 sats/B
28 0fd13272164cc2c180b7c5d52c5a04470325bfdc7608cc2c4e659debce7ab216 258 B 194 sats/B
29 87059e22b7653f55a406b9daf92aee7726d34c4ff829532f847595a2689be796 439 B 114 sats/B
30 345a5d41cba5423522b501d7b97faa3333164a2b2b27e1a67df077f4eb45ac35 227 B 220 sats/B
31 32089b56f7999c838c1048618d0f9f0e18259d229232662773cd57218eb18779 258 B 194 sats/B
32 2991b38cbf81997364bd28d31a6e05896b7092283d514334e6416ed1f2e8af30 521 B 96 sats/B
33 a4a62d3e798cd5c46ff044dcb1e02a563e7f7a285fdf5d6d7928b1fd8c96218c 225 B 222 sats/B
34 74de2dbfc8a0ae518a52aecbb4426bd339490f235cea78ea397d229c613ece46 227 B 220 sats/B
35 22227545e15aebd2964628b8fb978dd4985449de2b72845e26690c0cfe1c7ea5 522 B 192 sats/B
36 2c641ce57646a1d1754774acb5d5fb9bf8916229808b5acc78e10824a914da69 225 B 222 sats/B
37 cf2695bbd56d21ace6293d406745e674dcb812f737df6e599bd56429def0ce1a 226 B 221 sats/B
38 7ed408fe468882a139647d1dfd19c4271004f4797ac7928aa016c5a829a6488b 227 B 220 sats/B
39 3fb0096e9b307347faee86ffe9454a152c72f01ce48fce7a41b47605ea83a9d3 226 B 221 sats/B
40 f9fdbd413f8ea7828c19656c66d7e35592612def7563168682361b4ae90cd8b1 259 B 193 sats/B
41 3d2297e8c9fadd014d1fabee69efb808cfecc1c40fad3eadd3c862ecd1a52221 439 B 114 sats/B
42 04788657d6cc45c657f7f8360d710d41a4ab077e61a7404f95a84ed2f0b8418d 439 B 114 sats/B
43 dd1742db8ddb28baabe2093ebc41533dd577e6bc0697e326ddd96fdb635d28c7 374 B 134 sats/B
44 dbeb9dcd35cdc8f970a9a8cb927e7ed4814ad6f52eaf2b42def41e159f7568c3 521 B 96 sats/B
45 d333e92c9955edfa77a3b5e6585ab218aaa5efb2a6dc3084ccce886b664ed090 258 B 194 sats/B
46 99b75082c787955fb3bf21f45d1124e4e8c19ffc790d4137aeab3868d266479e 227 B 441 sats/B
47 dce595f79adc5ca13a950bceafe54ed736e876fed1cfa74843b6a816641df5aa 227 B 220 sats/B
48 516771c01d096a4ffc05631f815b2b98f0671ad24d264a74b2eecb46c59f436b 226 B 221 sats/B
49 f1cddaf3009c4313b1a7ebf268f16730ebd6007424728c3fdb229e540e46804b 668 B 75 sats/B
50 1a8f7b46d0b1caf48a16de7b03f18d41856135ee406379692666a4238ce81bd1 798 B 63 sats/B
51 705fecf4399a4a8d411a58fc9d84a40bb474a2e2502eb0f58e8910d75460beb5 821 B 61 sats/B
52 45c984747ea43d82ec2c9c25b011af2bdac51fb0b65e9d82a275d53c18279219 258 B 194 sats/B
53 1d6626c45e33d8914ad742a22090551edc7fceca5a9261e7257488eb1aaa87bd 464 B 108 sats/B
54 519621f41ffd7e566b57287e113c8f05a9d020660c44c5028c9f2502570a59f8 226 B 221 sats/B
55 24462c60a95efef70bd8161893d158687732f9d9860a030ec81ad1f7c5d26a49 438 B 228 sats/B
56 b2949d02f241ebaa4890865ca9ecb81a0803b6b26a12565efebbf5f5c8b4d973 1,561 B 641 sats/B
57 05a9034ce99625c205288c64f188ecf9e8a57d5b8a3b7418bc70a4c7626ff56d 619 B 81 sats/B
58 05a0fe5347d8db9537c1a40a9fea915e0f444f0ca741ab3b4872d4a669dde311 978 B 51 sats/B
59 c38e96d808f8897fc2a940952ef9f98440be2a136494185e3600fc3854aba8d8 375 B 133 sats/B
60 5dd84305114408d84d1d1239d49822eaa62da93d7f380af4af2dd8200f262a1b 226 B 221 sats/B
61 ecf11a48911913f787e21c40668426e53fb10a6d75ad37ebb9a160c8778f101e 439 B 228 sats/B
62 abfd456e3e8de048ebc50a0454951dcc49621731d973d745b400f29cf953b1b8 3,860 B 130 sats/B
63 fba000642680fd73261ae8cb54d36c7f4e5af06225bc64a9001324e147d1b048 257 B 195 sats/B
64 1b4925feab6daad43314755ea563375fdbe8823ef1b00dd1df8eafb798b936a5 225 B 222 sats/B
65 d67f3e591244233dd4e341ecd871a2ca77cc3a2520f53e7f9c2a87604bf5c16b 1,553 B 64 sats/B
66 d8fd90c1bfc3b60f23fc122dfca8ae63f830735ec2ad44c26fa1a39d7b4a5c5b 798 B 125 sats/B
67 ed138c6ab408032e0ce34d37bbfa47e27d60712beb5fb393fd42e3047c0c3bc9 375 B 133 sats/B
68 bad4f0098f02b14179b8ae9325aa2a71f0b755ae1825df984dccd183ff43ea2f 440 B 227 sats/B
69 a5d19bb34a5e83582dc808c747c5e08cf9b134768b576fe00336213c650de001 225 B 222 sats/B
70 31dfe08f421c3a222e9c4408b368f79f52dc71f29e893b8458d0871456e28ab2 257 B 195 sats/B
71 2e9de42f073c5010753408e154a7e9b16660a2aa53e1e2a3799105f60ee9601f 436 B 229 sats/B
72 80a2628173b84615dff4c756fb2ef45243e33bf794571e1283f3aa29075f5f93 227 B 220 sats/B
73 a69c99e4efb29ac21932c9d88c03652c0dbed7b39a695ee7c8581c9e7acb9e58 439 B 228 sats/B
74 0af22347528d02921d459fbe2217062a92cd2027d891ba5f10bd61455d1bb7e2 374 B 267 sats/B
75 dd3fd39f5e43cb2750329b44a819bbff9f08c67405b6e97059a96a8b25df21e7 440 B 227 sats/B
76 73012ba27803ea021b63c93a9b6b31b17d743646a98bede1580210c075939f48 226 B 221 sats/B
77 f28eb7ff41bfaff29b4fd70aa9ecda79817f8eaab23792eb85eb4f142fcd7615 226 B 221 sats/B
78 fc6a06ec0307aa24331b30408052b0f697eb1dbafe9f27a9bfecd511ed329c43 226 B 221 sats/B
79 bc87780fe50f68f9085925afe73baab2de2f0a4928527318c86d63d2f07a00ea 438 B 228 sats/B
80 02e1e644d382ab55c2672087a251b85757fa1f24bfc74fda041d119ea5cad909 819 B 2,381 sats/B
81 a91bd4b8276d2ea4a3f8a81d5f6cb92f649e73616b5714c6584181e19b5c379d 258 B 194 sats/B
82 edcb16ddc6174c47c55ae87bef7293e5804bde2474d90a3f082dcc5f2d9faf26 259 B 193 sats/B
83 2a68054c1b609a3cad6ffe3cbe6047a4ad6c706091b88b7c4cdeec1de69fb094 258 B 388 sats/B
84 06dbcd934c10235cf7b3db001329d5e0ac98bf9133095a751ac8e3db094e463e 374 B 134 sats/B
85 752107e87a3e21a3b5f9224f7fba45cc4cbdbd7e1b5c6366226f269a2b3aeda9 258 B 194 sats/B
86 387c47fc9057b4d27a7d49d29004a16354d1546de56e034b7d04f4d023fad7f7 259 B 193 sats/B
87 433c4c2e77deb18d85250d507ebacd118b6755ce7d005aec902112fd5e1adbcf 259 B 386 sats/B
88 3f53f7a73b0874869a5e0f9f7fdf6db7840d5792e4ba886097a4738cdf5f9dd7 258 B 194 sats/B
89 afff64c7804837e6d971a97fe89b0724da49d256dcc95486433077f0cd82be33 797 B 125 sats/B
90 3772cf265c0779109625e3867d345f4eba8457835ba8b51e4f875236d2578003 797 B 125 sats/B
91 4490ca498c531df40af2ee3efa0b13bbcc9bec2cae17541aa624c25748e2b8bf 258 B 194 sats/B
92 aceca137a91d482e20c5fe40a79f04c805d0f1026cbbede87aa7cca32701e84e 799 B 125 sats/B
93 9b8afa1fcd8d4a4001cf93e54e305b6e5cfade4502adfd0951e606ab9725f14c 259 B 193 sats/B
94 61b7bcac0959fe048094acc3a190ba3cb0107eaf69c5b6b6084ca0c592e598aa 525 B 190 sats/B
95 7c4e53ef93ba7c5bc1c553429e47e8f3fc38ed7880443af0b20039f4a12038ab 437 B 229 sats/B
96 a882f242c29a2eb0e1f3ca13d4dd1f2aafdb891c1d1c69b2a1cbf1315bb2f3a9 798 B 125 sats/B
97 68de1f5f44e12b5fc1b3d149ab7e2a45e3038df97ae40e26397fe84d95c519dd 257 B 195 sats/B
98 c9f8c1c42a6aaf6fcf899d287d27cec45b3e89f9584aaf5321d6e5365ea5eb70 797 B 125 sats/B
99 1b94f9b299327b8e3efbacdeb97beb465f4ad2c88e58f1886e18eb21ca7d3397 258 B 194 sats/B
100 5013be604708cc6d63f7813ed45e7f89fdaf38d4d9239a2dd900ad0296e676fe 437 B 229 sats/B
101 605493d2b2c50e87a1cfe03de4743e10e0a12c7119999f18ec35f89a8cb515b1 796 B 126 sats/B
102 d0e10e22b636639f75bd2942aedc80f30109f2fc373fe79e66e986fbd83c1f08 798 B 125 sats/B
103 f92d91ab4e1351d39c7e45cf59550a9469163812b2eec0c2ae920436b23ae69a 438 B 114 sats/B
104 8bfac09ec2900b4a6b8437b43e62c4812d92a367780ab11a33a1ad5d812075ff 438 B 228 sats/B
105 3943a7fa864afb305d8e1009991a2445a03779c2f8b6fdc08c0f41b307673c44 259 B 193 sats/B
106 a2d6b5b5d12acc60756978f51954433537b55cbf5522da2fa9c89092b4000fc7 439 B 228 sats/B
107 9f49a1e2846ce6290a8290c35c3d1b6e2fd0b64ed8bd48178c502a22b2a0f64f 800 B 125 sats/B
108 5477c4fc26dbfd22a5db6b1a1489325132d32612ed4b611947a4d6a9893b3c2c 258 B 388 sats/B
109 e7149fdbc722ad6c4b14e060ead18ae820b3b50bd1e98e2c990b959932c145a1 799 B 125 sats/B
110 29ed7e612d6e3510042654cc3793245e4a45b0ea37343ea945c1f110f9db2914 798 B 125 sats/B
111 11c642f05d2b26c5f40698a96fb23e31a4bcfb420c3eb88e298a376decfb9b14 258 B 194 sats/B
112 49b49abc0c7317e0a068e720f574c9e7077691c832413ffbf6cffeff1279f181 438 B 228 sats/B
113 93a8e7c19fd2f570b084e7b68289d05b0227b2ba6ec186e3fce4be082d50902d 798 B 125 sats/B
114 9a4980a67cb2f14107b7db8f6096c7e3fc46e68e4d6a3049de6fac3f01efc156 439 B 114 sats/B
115 c128362cbaa764449c34ca8407871f1aee5f210b94219301d0592226581d0a98 797 B 125 sats/B
116 3a88097c37e81c0c91d2a135339b362fe4a1e6cdff19c6e611cd96405dcc2b18 375 B 133 sats/B
117 acec9c2013f6ffed8b989c0d35c926a906cf68fa42278316748873aa1f478870 438 B 228 sats/B
118 092f2cca8354df2e9cdd807753ad897889dcaebeeebaecd1d262b7bcf9de3097 376 B 133 sats/B
119 f561eb6b5c4d6cec962fc39847453ec38821082cc7378144230b0332008329e6 440 B 227 sats/B
120 45e9db1f3454f3d50fe99238b8ba1f4830bdbaaf4e9544723a417512ecb61aa7 257 B 195 sats/B
121 d8a7dde3a91ff08dc65d23d98f6d24b651ecc8254edd7ce7dd060ce2a817ade9 797 B 125 sats/B
122 2e289e30ef56b96a2b13b26dc719e9e8be75f8c8239e51b027b389d8d201e6f6 372 B 134 sats/B
123 4d8b0ed53a88911bd2e3f969c9780b1fa954be3555d696d01a24e31af18dfb89 258 B 194 sats/B
124 f14e72c889d3b35d99b67a60cf3848107b6364e372bffa869fb7f441207c0b37 439 B 228 sats/B
125 4e3f85995d9a921813fbbadbf067351b24534063873e86d28b20a817688e9a64 619 B 81 sats/B
126 d8a4302dcf5ca04df9fc81f7ac47e4282fe322d8fde3c059c60e26e4b8a80774 522 B 96 sats/B
127 cbb693c877958593cfa21e9e17e890fa83fc43ccf5f9b63ab5f9ae60922f3b06 259 B 193 sats/B
128 970ba693836acb92d307848dfeb4d30a855088b5ed693d79af7ff7255aef71d2 226 B 221 sats/B
129 bee63c86e75d8c26b22168db7c20566206ec8c89e1b7b2ce9e1e717a89bcf37c 438 B 228 sats/B
130 5187db3d9b16fea73047e49a2bc3c7089700135d529d44df0cbd4381cad747c6 258 B 194 sats/B
131 b8d7cafe078b8edb05f94a0fe13120a91204e6cf4bf4f60e922835a0e6597016 438 B 228 sats/B
132 805c9ddecde649127e74dc03492301f19e3d97e8ec67bfa56392cf4fb7eef84d 798 B 63 sats/B
133 6e89d2e20bcb02c310556484081ffd5388afed9f1379dd05c2946d5769cd60ae 436 B 229 sats/B
134 7bdeea561c6399b629c99da2d090c084a219ff2dbf2cd8a23b098a2fc310b76b 437 B 114 sats/B
135 6ecaff80b7c6b12ae1c565cc2664733b2f2ed46f48496e781d3b8bd980d8384f 257 B 195 sats/B
136 2a8d73f025522a5379a55ba6b0b37c3e35c3886ecb781db908f912c3fb76ed06 797 B 63 sats/B
137 4b91cc505a946dee5affa4aaeec4aa30322e3993507b325624448e0d44ba14e8 618 B 162 sats/B
138 731c953831f5439e0a174ca6b62da9b86ce72d328c6710558bff34a318bb1755 258 B 194 sats/B
139 f51bb6422e3d2e78cbe1f6e66835251ce177b3ce2b9043a6c52c2c2b73d805bb 257 B 389 sats/B
140 bba7bdc22791a90329e8d2c84af2c2b69f65efd8cbeae9baebc50d0f05b04207 258 B 388 sats/B
141 41c5da904c0da9a1e53818c41577536245e7a44f1bc71db6ca0506b213fb0a69 227 B 220 sats/B
142 6d5e54722e2a7fdb59da5ba97f567188582abc87b968a20b00085e120e5c3bcb 258 B 388 sats/B
143 2d5b3cdaa966cc7c7be28ada10139dec0f8a19058a17ef7dd4735bad90ac0114 259 B 386 sats/B
144 55764d14dbc5b59190d7f26649b4037b40ee14ef319cfc8d3cc1815985bf438f 259 B 386 sats/B
145 9d79c5da891ee1e613bc71c073c39c72a00aac607ff1318f23b027594b771484 258 B 388 sats/B
146 ca30e526e08576811644b9f667bce437f68a139e06f6e4bedccd0de008bc37bf 258 B 388 sats/B
147 d4144dddb6c977f87cfe4cc4b36b3e4fd49343bc011820bee7bcec7d22fb958a 258 B 388 sats/B
148 31405b2680fafb4c89c2df7197c1e4934b120c8578a80787eb0349a96a5c0e89 258 B 388 sats/B
149 7959ffe94e6a9769cc55183e6f43f9dbd5519da9e96dc012a88fde420e5978cf 257 B 389 sats/B
150 6486de2f87b8119e9e516b9d35bdbb82561480ff56f0b700d4ef98ef477b90a5 258 B 388 sats/B
151 3b125a8a9e7b0b699d053cfc433512e43f9cb9cbbd19d963ecf60dbfde03e318 259 B 386 sats/B
152 97a4980dd4cdce8b0708428ecbf81307ad8a2a46c541827baad5b23212d57bd4 258 B 388 sats/B
153 2a559c1d4efb8cace30bf0b89b116c4b9f964cd6684fcccd0750998570b56717 257 B 389 sats/B
154 33b8b61b4688560ebe4223eaad43b971ca92d7374783fc4839afa0cdf40b20c3 257 B 389 sats/B
155 385853e2d8598ce07fffa02e3a33fd5113c1a1b37375ec54c2f4222ac50b9808 258 B 388 sats/B
156 0b763fb044878baa600739a7aab3e56e63b7f66151c8d1a8befe897024074111 258 B 388 sats/B
157 d515d6904382d43e385582bcdc9daf27242040c951614f12f1c2c6ba00d575ea 258 B 388 sats/B
158 2225517d59ad4810d2f551d1b536ef9d49031535c5826a97990ddb132f1b9cf7 258 B 388 sats/B
159 803e2bf81d86b301fe45c3d431fba732702c288d64ca56b7468dd3a6d069eea7 259 B 386 sats/B
160 4d3fc97fbc32b55aafcc87bd67ef2af3f53281998473048c639a6a1e6d3c7900 257 B 389 sats/B
161 26ecac329c505ec680de1a9b7241859b871c4fdf11848181431ccbfbe10fed6f 257 B 389 sats/B
162 f5e2058d231c973bd0a51b73585de5175e327c8552a229f271fe7d6a36030dc9 436 B 115 sats/B
163 47c1a73af0d21a56024fd0ec27c40d46fedd824ec72b7f1950d2aafca4f600d5 437 B 229 sats/B
164 41dc3ae85cc2462f81dd72d1af57a7ad6b048514b3d98a088da2aa8ab4192df2 258 B 194 sats/B
165 675c24a62540fbe08746e206376d2fc5bbee121241ec69680c9b15677d0971b1 438 B 228 sats/B
166 1e0a998508407d4207cbf11e96ac7105327691b57c2d98d2f951ef87cbdd799f 438 B 114 sats/B
167 08b92af4328d52e311ed7c3f6fee44c3d4312048ac5a5359aef20d2241e82e09 437 B 114 sats/B
168 ea192bfee01dde682cd9e88987897300045fbd785972619acd4f26031fb47e7c 437 B 229 sats/B
169 e31e9127114e1bf58d3cf1eedae7a110697a30b350b3deb6d394be4ee1ba7299 258 B 388 sats/B
170 512ccb6b561cf60bc8cef561228de6ea0801cee27c3f710e73b5f5c8f638bb7e 257 B 195 sats/B
171 31491dbbfadfe18b765ba162e58bab98288ae1766389c11f17289fac3cdd4a43 439 B 114 sats/B
172 e6101e6a45acf5f934399cb443fe78591d94f1758fc05994faec207c7caeb272 437 B 229 sats/B