Due to the adjustment of the company's development strategy, CloverPool (formerly BTC.com) has started anew and has been fully updated to a new brand and new domain name to continue to provide high-quality services to our customers.
USD($)English
Summary
Status
Confirmed
Input
1.55188467 BTC
Output
1.55164403 BTC
Sigops
125
Fees
0.00024064 BTC
Fees Rate(BTC/kVB)
0.00003500 BTC
Other Explorers
Transaction
Input (1)1.55188467 BTC
Output (211)1.55164403 BTC
- 0.00074750
- 0.00032813
- 0.00234685
- 0.00026848
- 0.00076524
- 0.00074728
- 0.00040931
- 0.00029000
- 0.00073841
- 0.00074769
- 0.00042809
- 0.00408445
- 0.00032787
- 0.00122701
- 0.00067024
Input Scripts
P2WPKH_V0(witness)304402206630f38c24ad3a3174978e40ad2e109f0a42e18e5d0e5e6b125d3d1cc1ccf48f022028aced301c17293c853cf74566a24cefd248ac7a25844256fca8f708d766395c01027aecf96896253b043a4d009c8417f4c2c48b98233c42100655517e6d074b5156Output Scripts
P2WPKH_V0OP_0 578ee4e4a9fb2fd605e27111f6adad920030cc80P2SHOP_HASH160 a1618cd26882bbb1a8d91d267112d845322f9fe0 OP_EQUALP2PKHOP_DUP OP_HASH160 a8bf97f9d98bbdfcb371901503e38480cf5d9c3c OP_EQUALVERIFY OP_CHECKSIGP2WPKH_V0OP_0 7681f52a3a887f2610edafd99fd291c84dd42420P2WPKH_V0OP_0 6857f6a47d7a1c184827cce11f03770d8c24fa8fP2PKHOP_DUP OP_HASH160 80f183104a5b70fb173ffeb25dfe272426c07ca3 OP_EQUALVERIFY OP_CHECKSIGP2PKHOP_DUP OP_HASH160 f5f2956aec959f77e25d141d8acf83d67dfda0f1 OP_EQUALVERIFY OP_CHECKSIGP2SHOP_HASH160 6042d134e4efc4aa813da44c679ea76073069cb8 OP_EQUALP2WPKH_V0OP_0 84e90af180fd7d827b79398580debe8077452183P2WPKH_V0OP_0 5f07faab07e26c2c9bac3e0821bb6f8f89133a99WITNESS_V1_TAPROOTOP_1 7ab27ba229ab5dbdfee7813ce97dd9a958e7c73216ad64bc80a423473b2b5c6dP2WPKH_V0OP_0 83b67df765793c2fe39a35ea6fbb0d03298084e1P2WPKH_V0OP_0 f44f8128e54642ce1a793c4b93606f1a32341763P2WPKH_V0OP_0 b8fd9330799feae50e6f1d16b58b924213ee4008P2PKHOP_DUP OP_HASH160 d05b83adff4b7867f517516677c788ae0615594a OP_EQUALVERIFY OP_CHECKSIGP2WPKH_V0OP_0 33ff54725c727994827afb4a2427d75ca03523d2P2WPKH_V0OP_0 47c09fe9a830059ce3ccfb9865ad886fa26004b7P2WPKH_V0OP_0 313c185a78914489a147bbee3e54120b9fe66779P2WPKH_V0OP_0 6490490acff3fc7a77ca5a1c46e18f3fb1ee6294P2WPKH_V0OP_0 074d82832dc5f72848ab470c5bfe4e76e1fc6adaWITNESS_V1_TAPROOTOP_1 16cadd75fd00b316e64f7b0eb1bc1e54f4fe24f8887fed0493ba0a8672baaeefP2WPKH_V0OP_0 bce86313612d168df50c9d5504de37a62e94f514P2PKHOP_DUP OP_HASH160 c1ca4973e18e563b99abb2ab0c18b072d5612d2e OP_EQUALVERIFY OP_CHECKSIGP2SHOP_HASH160 e9e591de4f43d491e90cf22a1aaf6bed3bcd0ecc OP_EQUALP2PKHOP_DUP OP_HASH160 c2207067e07d0647662f620b255abcdff8ec3540 OP_EQUALVERIFY OP_CHECKSIGP2SHOP_HASH160 dd6ee9452b718a5a7cdc7911d17582ab7ebade3c OP_EQUALP2WPKH_V0OP_0 b0233c88ad4f0c30df3216e1164d4ae1c8a955dfP2WPKH_V0OP_0 66869c1f096e96a009e807d5d0d2e93d60c24f70P2PKHOP_DUP OP_HASH160 a0177b373286547c3e7752fcadffb96b1978f516 OP_EQUALVERIFY OP_CHECKSIGP2PKHOP_DUP OP_HASH160 6e35f14ffff36c5a6c1c301a92198982e3f061a9 OP_EQUALVERIFY OP_CHECKSIGP2WPKH_V0OP_0 ac93bef7a38eba2f3d9499be1919d33e7a5d0376P2WPKH_V0OP_0 9e3ccc4a7d1307bf049f899623182fa50556c4eeP2WPKH_V0OP_0 4a43019d03b169802883a6d2143031b75c910a78P2PKHOP_DUP OP_HASH160 28a8711c1903fd1de417eb4b247b77dde633754b OP_EQUALVERIFY OP_CHECKSIGP2WPKH_V0OP_0 1a3b9a5fe3921800cdb35f3f7e8b6ced45dae059P2SHOP_HASH160 b16a3bd88a3f2bac219cbf1bd5555223a23664b6 OP_EQUALP2PKHOP_DUP OP_HASH160 352676233fbfeeca9412a92d1a0c190da4735af0 OP_EQUALVERIFY OP_CHECKSIGP2WPKH_V0OP_0 16baecbcfdcb5e2cfed378dea7b3af8900277af7P2SHOP_HASH160 ebd567286413aa9d29f83866174c9aba3e694b31 OP_EQUALP2WPKH_V0OP_0 0b4a38a26096b62f8c144367421a2a9b5327cb40P2WPKH_V0OP_0 1738ce199ae7ea8b91d89b982c760b578404a65cP2WPKH_V0OP_0 dc927e0abbc9509979525917f0c96ac44031572fP2WPKH_V0OP_0 e1a4c1e20aec30cbd2457ff6e54444467b20600fP2WPKH_V0OP_0 d32fdbeeeebae7e200db0db341a4a16b529b3998P2PKHOP_DUP OP_HASH160 2e96749b52695d22490e781a934b84b833124e89 OP_EQUALVERIFY OP_CHECKSIGP2WPKH_V0OP_0 6504d8b6bf72a27eb510ec28d496bbd225379f83P2SHOP_HASH160 524e6559e6bcbe7ce1887a2d213038571468d771 OP_EQUALP2SHOP_HASH160 b7528b4aae9e35af9e95b0c3490171b87e6e13de OP_EQUALP2WPKH_V0OP_0 0fb685e691cd5d7b007cd60a0455cd40e6b3a1ccP2PKHOP_DUP OP_HASH160 82963a3d8b93479e523cdb9629fdc1e063f0f1fe OP_EQUALVERIFY OP_CHECKSIGP2WPKH_V0OP_0 790a95f7e7740363e5656f0280c6a704361bf27fP2WPKH_V0OP_0 22a8a2a12747142dd8ad1dd5ec3f37887ea6f7f0P2WPKH_V0OP_0 9c96bd9c0f416f874e07a2e59cab00c65a0d2e59P2SHOP_HASH160 4df3ff96acd77d5234a448111c69e60b9b046702 OP_EQUALP2WPKH_V0OP_0 512b89dea736394e6443f1962eda5c622b0c4326P2WPKH_V0OP_0 f2fb823276a585b7b7700fc872107cf9d2a40b76P2WPKH_V0OP_0 5904f0dcc1054bfeff235ce8ea76f81744023f03P2WPKH_V0OP_0 e88ab5d12e8a0c84b6e6a9d9da213d5efdba7701P2SHOP_HASH160 4b7956f597039b7c6a01af0e0ba2a0623d804951 OP_EQUALP2WPKH_V0OP_0 a4a37adc74488a8f3558382ff55ab033273cd1fbP2WPKH_V0OP_0 8885fb86ab1b37e0906dda26ac96396704f216aaP2WPKH_V0OP_0 a0167d5d49710687b98cbf4b529059cb292e2ab0P2WPKH_V0OP_0 d6c2fd5bdbd7ce0ab3c73e7d7e242e45bfe8211fP2WPKH_V0OP_0 e08502d6f67144b849f3f7bb3870e8ffd641dd8dP2WPKH_V0OP_0 cee1b3be35aa4ebacf74dc9b2bd48e6f976a1ea2P2WPKH_V0OP_0 0ed889055cb8117ce4fb9dc6807e5488e679d7e8P2SHOP_HASH160 97e757e433e3e793bec6e881cd9810abfa30dea7 OP_EQUALP2WSH_V0OP_0 1315d84e0d07da4bbc2d45ae33d187609d1d8c00c76029a45f4ea0b203240058P2PKHOP_DUP OP_HASH160 475b97d38b9be7c3fd8239ad513dbd61cf88676a OP_EQUALVERIFY OP_CHECKSIGP2WPKH_V0OP_0 a64051fb612dec1af45c0c664f5982e0c8136a14P2SHOP_HASH160 d76d8e684a58521abcebaec96a64f75648437538 OP_EQUALP2PKHOP_DUP OP_HASH160 9b89752c5aec57d398eb58554a20ae7ecaf43c76 OP_EQUALVERIFY OP_CHECKSIGP2WPKH_V0OP_0 fcc70b79187d9043e1e7ea53127e1e2da6c877abP2WPKH_V0OP_0 9d02a580dbb254fa64d6128b6cc17b44374be0d6P2PKHOP_DUP OP_HASH160 d5683a2e313b4de9270d60df11c827a235c910ef OP_EQUALVERIFY OP_CHECKSIGP2SHOP_HASH160 7e8062405d668c8c8c3134f7da87a773f1931f5a OP_EQUALP2SHOP_HASH160 d03bba5ded27cfffc0978090bdbdee434bc0e61a OP_EQUALP2SHOP_HASH160 a7309def6d2542d84907333b245f3c9c8e2dfa0c OP_EQUALWITNESS_V1_TAPROOTOP_1 ea8a629e850c4904946e0e08e20fb6d4bba3cb5953d7ec3cc6993fd366dbe54bP2SHOP_HASH160 d810e5806d21e38da34b5155ad62da114d0bc5bc OP_EQUALP2WPKH_V0OP_0 6f29bb22636fa127348724a754b11b38907f1780P2PKHOP_DUP OP_HASH160 18b0f6a5523ae92bfe381ef0725b56465aa2c5bb OP_EQUALVERIFY OP_CHECKSIGP2SHOP_HASH160 f9bfca9e3399d979610e602bdc03441644a01953 OP_EQUALP2WPKH_V0OP_0 3e6648cd90ffc11ac243e792e82990073b0fddb1P2SHOP_HASH160 1d3e8072ba327ac8e536acfa6ae6a6207d3437f2 OP_EQUALP2PKHOP_DUP OP_HASH160 69af92d090bea3840632879bc9ce271910a2142d OP_EQUALVERIFY OP_CHECKSIGP2WPKH_V0OP_0 86426505aa1de775ded77c5224a7067d799c422fP2WPKH_V0OP_0 2b50815af14a2e3f5081b98764371ccc2aad5f89P2WPKH_V0OP_0 f2e16baebbb48d01c7a9d092c52dd662a1ed000dP2PKHOP_DUP OP_HASH160 7bf41c3c2fe6ae0556ccb2032498f2e8723e258a OP_EQUALVERIFY OP_CHECKSIGP2WPKH_V0OP_0 ac6bf082810ce684c5ff061fa1145c4b2a084ebfP2WPKH_V0OP_0 33062fd4b8c864b272692143041bf3174349a5b3P2WPKH_V0OP_0 a614d95a12bb7aa1e004937ee52bf0489a09baaeP2WPKH_V0OP_0 a1de3ad08a70b5a77638c44476a10ac44521e871P2WPKH_V0OP_0 00dfb6ea52d125814b10e8b4a70bfb8b6d485185P2WPKH_V0OP_0 21d7e20f6789f77ed3ef43c260f51beb5bab9b82P2WPKH_V0OP_0 1a4dcca483e8c2280ae1e30a2babf1d66e25463fP2WPKH_V0OP_0 f9aedf934202cb6be90b02c1309d7f5c3cfa266aP2SHOP_HASH160 b8ff3b3d0ce8c3ed0cad278a2dccd9825fbc935f OP_EQUALP2WPKH_V0OP_0 f731d05c05711799538b093312a7df404204c008P2WPKH_V0OP_0 020fcb0454300b90b3a3a8706a3bf8c59ef6256fP2WPKH_V0OP_0 40305f144b69d0306b2b80baac90f77c2ceb442aP2WPKH_V0OP_0 3cd3fb7513b362bdf67c87703e2783f75fa75210P2WPKH_V0OP_0 a6862c20556834df8c6ceda549f199d43c5ba308P2WPKH_V0OP_0 4cc1e36fdeda4b07781fe775619ac0fb11bb2ea5P2PKHOP_DUP OP_HASH160 178c2cb051aaa023b7f2115e7ca87702f0a003d5 OP_EQUALVERIFY OP_CHECKSIGP2SHOP_HASH160 1cc85cbd2b2744557f5aa13d73618e53a480ad21 OP_EQUALP2PKHOP_DUP OP_HASH160 ec821397d84bba305f43360d5ab9eaa2550dae20 OP_EQUALVERIFY OP_CHECKSIGP2WPKH_V0OP_0 9fc7ec840b3ef76fc05ea995b4e0001311071228P2WPKH_V0OP_0 d0a18c0e67782f10648089e94c4a1d6522aa702bP2WPKH_V0OP_0 59133d1bde29b68ebd45443e4e293ea24e4f85d3P2WPKH_V0OP_0 23f604cfdd4ab086d0ab7fb52b7091b8ebb98045P2SHOP_HASH160 094eac60f0fa726803d324a6a89a8a65c5513f78 OP_EQUALP2SHOP_HASH160 35c5d8535874a46225d723a1deb60702b3c817ba OP_EQUALP2WPKH_V0OP_0 51d87ff03611c5face5211aaa1ee28de8ec776b6P2WPKH_V0OP_0 0f8f328f7163e0ade174d145383fe934f2edfd6fP2WPKH_V0OP_0 d07029a6186617833e2eb410649ef66f1d10504aP2WPKH_V0OP_0 c5cd171b6d478ef618620b8fa57f524fcbf1856bP2WPKH_V0OP_0 aedf5b9f70b30ac843cc90fece933129f23873ebP2SHOP_HASH160 3d6edbdda9ff99b0568401056f4c69c38f756a5a OP_EQUALP2SHOP_HASH160 65916a94db95080cb1ca1d45134247e2364b7801 OP_EQUALP2PKHOP_DUP OP_HASH160 6f52da1daacd1032156b50d25d40b824965adffe OP_EQUALVERIFY OP_CHECKSIGP2SHOP_HASH160 099f67aabba6c05f9089db77c7e7c014eef1dd02 OP_EQUALP2WPKH_V0OP_0 3c75d6c507622a8481a6bca0c86c9cdb86ef7dc7P2SHOP_HASH160 bb55964d33dc7bb97726bbcd2380382933cd302c OP_EQUALP2WPKH_V0OP_0 6cdd591fa0bd42ad736ab2331d28f8416e858600P2PKHOP_DUP OP_HASH160 dac7f71470a252eff21ee6975f43325a726c97fd OP_EQUALVERIFY OP_CHECKSIGP2WPKH_V0OP_0 638d1ed7ce4e96316ca63b554cdbe5bde6f507c0P2WPKH_V0OP_0 3588a506d14d0ec509c0c9a3d74faa8b4553c6d7P2WPKH_V0OP_0 e82dd42efaa1ca3a75b0f1323c58b7234dc88de1P2SHOP_HASH160 2f3c99afa8ef05ecf06790421f6d4b501722ebe0 OP_EQUALP2WPKH_V0OP_0 bf5efd84ba277a93370e937f5081c03e5400e7abP2WPKH_V0OP_0 cca447ae3dc7ce50a1eb8d82ab7e7927c8b34e71P2SHOP_HASH160 64e22c22032483f601709beaf72aec1350c54c67 OP_EQUALP2WPKH_V0OP_0 0113b765e3b6d547170b57db3908f12e2878a587P2WPKH_V0OP_0 c62603cf4e3457c6c1516b6a31d6ce9953c0b4dfP2SHOP_HASH160 7ea5d1dc285a9601adfb028a45e2725df35fbb2d OP_EQUALP2WPKH_V0OP_0 3165151bc81543ffdfacfcc3b60b8fa409ee2dadP2PKHOP_DUP OP_HASH160 cc30f420a2a3c697e3e6bb1e2e2f6efec97485a6 OP_EQUALVERIFY OP_CHECKSIGP2WPKH_V0OP_0 e218ab6964c4531788a2b3df7670857832d60353P2PKHOP_DUP OP_HASH160 87e6841ba58919e772f8e3c1805cc988df908d1c OP_EQUALVERIFY OP_CHECKSIGP2WPKH_V0OP_0 85739e4e4ac7d2dd8482f524c7b4c6da91ab3821P2SHOP_HASH160 1229b9ba932bbbf04dec404646bd47c02fd4408b OP_EQUALWITNESS_V1_TAPROOTOP_1 49ed9549daf8f6b55de59d748849782b9008015b76e16f79ad9f59f02075b9d9P2SHOP_HASH160 2b92e1519ac8c95fbf40256617bb2732f093c2f1 OP_EQUALP2WPKH_V0OP_0 d13d23d8614bfc9f1777bd924905afe38f32028bP2WPKH_V0OP_0 645ead181ba245486e8c37cb5e49da8676cac512P2WPKH_V0OP_0 04fd6f32642341a35542386079366c40a71b53e4P2WPKH_V0OP_0 301971f12704e0107307924c1bb34801972e4555P2WPKH_V0OP_0 504492878f51066b1ee4227880d5a35b1576d765P2PKHOP_DUP OP_HASH160 ab52834a1165c0eebba173d1065da99a2ec4c419 OP_EQUALVERIFY OP_CHECKSIGP2WPKH_V0OP_0 4eea4b5d49377eafe37b8e5ae5ff3fa30f366981P2PKHOP_DUP OP_HASH160 2633582d0734256933015b43d557d6c52582b7d5 OP_EQUALVERIFY OP_CHECKSIGP2WPKH_V0OP_0 951fe42ae10447cabec6347aa3f5f2cef6900426P2WPKH_V0OP_0 db03cae8c7052bb07887460290e18cde33d11fc5P2WPKH_V0OP_0 da76dd998362d7c71879db777529430eb272c9e1P2WPKH_V0OP_0 467f42e2a620d1c13031ccaba27b01edb44bcc5eP2WPKH_V0OP_0 faa6ff9ce2ff4d2bd1140781d8ccbde4788650efP2WPKH_V0OP_0 0b292982739fecb8ea17aa43bfe04b317ada55f8P2WPKH_V0OP_0 702fbd6447daa4a10be48a85ba0e8f4c5d178d51P2PKHOP_DUP OP_HASH160 3ee8b9b11a892bf6a6088f410c6130df47b5da0b OP_EQUALVERIFY OP_CHECKSIGP2WSH_V0OP_0 94674ecefba70a95730572737c9090420cd8bfb0f1fc302923b61f453713837dP2WPKH_V0OP_0 9c9d9f0646138212ffe10846c21e8594a93ac0adP2WPKH_V0OP_0 d098e7ead5c029b8cc594078a5fda3c2f13b91e6P2WPKH_V0OP_0 dd21544364c9e2faba07bddf6699a30d86e96f31P2WSH_V0OP_0 d30fe6115380b5578394006086192579d29aeb566e75d44a7eb235cc56842c6eP2WPKH_V0OP_0 a0e8a7a3de52dc5b5c816f271e2b90112fbe43c8P2SHOP_HASH160 432a90244da1f0a265cd118b8b92237dd59a3da6 OP_EQUALP2WPKH_V0OP_0 37b3a2d31dda77aeeff2295cc6621892d01fcbbdP2SHOP_HASH160 ca75d18a2f8926685499b4fe0bff2c0e80f6756c OP_EQUALP2WSH_V0OP_0 7a55187ae78c92cbb0ea36d9ffcfc07de54287a9e6af3a4eae528d890e76acb5P2SHOP_HASH160 7c983816eba0ffd17b808a76df23025a315ddcbc OP_EQUALP2SHOP_HASH160 8c70d6331bcf8a89e5b23b1bdc1203e74ba04177 OP_EQUALP2WPKH_V0OP_0 1dc8c850c7b3d35eef1132fe4bb8baffbba3d4e2P2WPKH_V0OP_0 1cd345e73d118a580d3f5e826d8925ea17f85c47P2PKHOP_DUP OP_HASH160 595cedc6da6aa0c681c3f6590ba15f8c1c9fe013 OP_EQUALVERIFY OP_CHECKSIGP2WPKH_V0OP_0 6b25ce9347946ed108fcc09e9083cacee83b3a91P2WPKH_V0OP_0 f0b9cef870a7ee5d5279a8cd387997b01680512eP2SHOP_HASH160 ffe7cd5a244e798c844e8d5bdaca9438785be124 OP_EQUALP2WPKH_V0OP_0 8d26df999336c9d815c793f4b690d3000edc8e20P2PKHOP_DUP OP_HASH160 b929224d1b05e71efae76fcbbf0a0415efe4c98b OP_EQUALVERIFY OP_CHECKSIGP2WPKH_V0OP_0 af7b5c6f71cdfc371769405aa1d5a974a8709b0dP2WPKH_V0OP_0 53d14679a73ae995df8d358bc85bb60d17dd39d5P2WPKH_V0OP_0 9e58f67e03300e95963229c73147ae9fb19d02d7P2SHOP_HASH160 2f3ceace24ca3931d8654d107c75b687c5f25a0f OP_EQUALP2WPKH_V0OP_0 2fcd1f6c73db327a2ebb44dce0e9901fcb4fec33P2WPKH_V0OP_0 5a77d12b74d74bc96d1fb3483c8c5bd2855d8b23P2SHOP_HASH160 9a59c06d4bd7c1e68540dfa92cce8506309be8e5 OP_EQUALP2WPKH_V0OP_0 205032530968eb0d07c7a5c7de6ed1c8c318d92cWITNESS_V1_TAPROOTOP_1 ae2b21efa6c77f727c9f9f2fd15515a6acccc87f70d442f22677446b26c5efe3P2WPKH_V0OP_0 0a3f11c89dbc9545d57afe1bad00649b4f6b2e9bP2SHOP_HASH160 b04b22ba52e0ab48b5eecec79a5cf9b210d78819 OP_EQUALP2SHOP_HASH160 0d3c0577d2983aee9104ab6666e4546a5643c29c OP_EQUALP2WPKH_V0OP_0 9a56a42d55668dbbfb2765692c2641eb940f962eP2PKHOP_DUP OP_HASH160 6a4f7aa3cfbf0d3921363747858a2b1e268e9683 OP_EQUALVERIFY OP_CHECKSIGP2WPKH_V0OP_0 bfe3984e6adf610da63b078154e2fbbcc7e4cbabP2PKHOP_DUP OP_HASH160 0441e4c3a08b827996773074fc05b45240f6a5c5 OP_EQUALVERIFY OP_CHECKSIGP2WPKH_V0OP_0 fc6f675b01f7f8c74fe5ebfe422434f08ae579faP2SHOP_HASH160 38e008f774371cd1290a8c9c446b75bbf824317a OP_EQUALP2WPKH_V0OP_0 0e15aee7464850cc2c7e9e61de490398906612bcP2WPKH_V0OP_0 863062c4b18e840413734ba0ba772232bfccfd3dP2WPKH_V0OP_0 88d9115d3fb471eda2b7f7d0d2cec6f1a6e691f2P2WPKH_V0OP_0 891251727bc03b73627e2e37b6e47225c4bf5340P2SHOP_HASH160 47f0f34904c40a041b8759b014ddfc08a39000be OP_EQUALP2WPKH_V0OP_0 d50dcf9029806c3cfe985f6a0344731d5b0af43aP2WPKH_V0OP_0 30bfb7a1ea40b5956902edbb0322cfd6886b46e8P2WPKH_V0OP_0 776f4772bf042e7bfa9109767fb2b867ba9d1c95P2WPKH_V0OP_0 5703c242b90d01b200942eac6514ac2829d31355P2WSH_V0OP_0 5f0b17b71042eedd18980c2f4a8f33bac7807e29d55f6f5b78cad16c105afb93P2SHOP_HASH160 5d2770ed584740d5a5529ea8d7008397c2cdfba5 OP_EQUALP2WPKH_V0OP_0 c0bf5ca948bca488973db6907e30038574b6dc2b