Onion Monero Blockchain Explorer

(no javascript - no cookies - no web analytics trackers - no images - open sourced)

Autorefresh is OFF

Tx hash: 7d0ba46d9b3ff3ba97812d69a57f73d51aa193d4b6b5b21c5dd424485781c5dd

Tx prefix hash: b8bd5d7009dd74fbfcbb4698a580c800a89b0c9e7631cffa89d005361b0e3ba6
Tx public key: 9a24e47a0f521e6a1a08c9326ec615c06b3e94785d45621230693ad8871b59e1
Timestamp: 1716477855 Timestamp [UTC]: 2024-05-23 15:24:15 Age [y:d:h:m:s]: 00:218:04:11:00
Block: 3155356 Fee (per_kB): 0.000137980000 (0.000040989707) Tx size: 3.3662 kB
Tx version: 2 No of confirmations: 156994 RingCT/type: yes/6
Extra: 019a24e47a0f521e6a1a08c9326ec615c06b3e94785d45621230693ad8871b59e1

16 output(s) for total of ? xmr

stealth address amount amount idx tag
00: 5b1fba591ed754dbf2bdada18f374b6f91f493d730f0c042a2275d6c5cbc19ff ? 103085207 of 122402851 <99>
01: d758a87a7cb670851bf6e3bac8283021139d7767778a71554a174140ca4740d1 ? 103085208 of 122402851 <49>
02: 91c13a7cc998b30e00f51e0b2912196cec7bc7f405dc28053dca7a853433feb1 ? 103085209 of 122402851 <cf>
03: d946a9c8b1cbfa1dad7d3f430015700611ac47a90dd5f8c4bd094e15a8fb89b0 ? 103085210 of 122402851 <08>
04: e14d61112c8ee57138dff3f76200e8be68cd646b5a5adf51aa12fc2598d97c4e ? 103085211 of 122402851 <a8>
05: 31b496c545f6d6eaddf4a804828bb0472ca8fc4fd3232ea8b2a4ba4e9ade129d ? 103085212 of 122402851 <76>
06: e5989b6e89c2ce3e3ca0b472608281d53e2ea2f0e46dff90b75aebf409207ce6 ? 103085213 of 122402851 <2f>
07: f1def2f2cc1833c636badedd35e6c55e14d16616002a034aa4ca8bf718ee2478 ? 103085214 of 122402851 <32>
08: 0db773443b76c6d65ddc8308c9597c15d5f6dbdb1a4d9740977ae67773d4bcd1 ? 103085215 of 122402851 <ed>
09: ed18077d67bd81e70ade82f9e793c00c36452c840d1bf9711bb6ea3e058a090c ? 103085216 of 122402851 <a7>
10: 0405f8a4b7f34a586038594410b54a5df41d8a6116a663155a5671a0ab498d38 ? 103085217 of 122402851 <c5>
11: fc6985f4b1d06010d646d92e9bee87ab7bfc5623e763013385b37a3c55d71e18 ? 103085218 of 122402851 <a8>
12: 71249ceaca8d6759419a7c6dd511fca760de3a2dd850c6b3e1c03ca4d8cd13ab ? 103085219 of 122402851 <0d>
13: 96fc6ad4100ab1b75801178c1788e599d6b54267023d42f0b3dbe83f07e422c9 ? 103085220 of 122402851 <05>
14: be545666301657e9d58a42cd8dd03a0674b1cc6cc9896a902a2abd85076c7e78 ? 103085221 of 122402851 <3e>
15: 5a368536cf1539e11f34c42288847f2220d55b35e09335e38774a5fd75b7e3cf ? 103085222 of 122402851 <48>

Check which outputs belong to given Monero address/subaddress and viewkey

For RingCT transactions, outputs' amounts are also decoded
Note: address/subaddress and viewkey are sent to the server, as the calculations are done on the server side



Prove to someone that you have sent them Monero in this transaction

Tx private key can be obtained using get_tx_key command in monero-wallet-cli command line tool
Note: address/subaddress and tx private key are sent to the server, as the calculations are done on the server side



Inputs' ring size time scale (from 2023-11-08 14:39:11 till 2024-05-23 15:39:04; resolution: 1.16 days)

  • |____________________________________________________________________________________________________________________________________________________________________*_*__*|
  • |_*_______________________________________________________________________________________________________________________________________________________________*____**_*|

2 input(s) for total of ? xmr

key image 00: 3d541b440c283fd944329d4938f6e2dadb9058ef7a7be7b4e6037226f0b6fe2c amount: ?
ring members blk ring size in/out timestamp age [y:d:h:m:s]
- 00: f6834bb9945a7d695e70139fd6edcfb8e421314eef0336b828caa449f04cd48a 03150305 16 11/2 2024-05-16 15:49:55 00:225:03:45:20
- 01: 677a97b1bcca199c6bde640c92627c8cd98ffef3aa26b5f02ee47f2f193836c5 03152260 16 1/16 2024-05-19 06:59:50 00:222:12:35:25
- 02: a500544b2fd11893167c8d3becd64a35d23fa6686c8e15b52c3f8b25208c80e1 03154726 16 1/11 2024-05-22 17:33:51 00:219:02:01:24
- 03: 4dffeea463f76082cc8e3551ce3a8467c291dc1de6631ba23fb5a5645b0f3df6 03154934 16 1/2 2024-05-23 00:56:56 00:218:18:38:19
- 04: b7c4b68fe348cf418dde6a3c755ac773a6ca3f95ac400e6021a7602fb415efbd 03154987 16 1/3 2024-05-23 02:43:10 00:218:16:52:05
- 05: d39a770b85df2ecf1a9d45d4ec8a939d47d73080ac11624d09a004701da73919 03155017 16 1/9 2024-05-23 03:40:14 00:218:15:55:01
- 06: 33f2b663165f46d7fb3334dad78af1fb591311f1bac2609febe1e5ca62e58142 03155176 16 1/16 2024-05-23 09:14:23 00:218:10:20:52
- 07: f5eaff8974f12c6fdb340e7a5e928ae13ac0e31dd41c63f13beaa047c3cd04d6 03155196 16 2/15 2024-05-23 09:54:30 00:218:09:40:45
- 08: 8e2ea8d1026a3792d0aac7d7a1f72c8e47259e9eb5430f04b4dd4d387f5dceda 03155233 16 1/13 2024-05-23 11:06:47 00:218:08:28:28
- 09: 76af88e95618cb44db7e490379648060756f802e1c27742701641c40b88740a8 03155274 16 1/6 2024-05-23 12:52:17 00:218:06:42:58
- 10: 84579806d8067c6306643b4c85c111f5745d0a17209f08c84cd2fa3aa4af3793 03155281 16 2/2 2024-05-23 13:00:32 00:218:06:34:43
- 11: 541c66919d8f26eac3134a729d3af4ea5e40d7b5393d10b76a29d8f72aa43c1a 03155303 16 2/5 2024-05-23 13:34:05 00:218:06:01:10
- 12: c381ecb5ea863ce50b012e037ecac19bdcd2a3060909d0d37c78bdc0318bb0e7 03155322 16 2/11 2024-05-23 14:07:12 00:218:05:28:03
- 13: a051b5111ea54509f4e3da67e1e3a4b7be77fccfb18f17e65734833e317f8b52 03155333 16 2/16 2024-05-23 14:32:47 00:218:05:02:28
- 14: 7a06f9d954551855a5da321d72527268d6b78c0d1ce252181b80f8ed2cf8203b 03155337 16 1/2 2024-05-23 14:36:55 00:218:04:58:20
- 15: 46ee5a402fb3e515212483b5e3c6f7fb52dd9ab2c8f6802dc2c79d745b650076 03155338 16 2/15 2024-05-23 14:39:04 00:218:04:56:11
key image 01: 271a8d1387e72087618929f43d49a62143588c496e93fdbf5fcf0bffc08e466c amount: ?
ring members blk ring size in/out timestamp age [y:d:h:m:s]
- 00: 256345109791847b78e2da129f0b2590b49ac6dc3411d2751479ca5974d0959c 03013709 16 7/16 2023-11-08 15:39:11 01:050:03:56:04
- 01: 0da072337c3d14c42944919a203f64a4aca80c90e6736dac5cd05fb4344e9940 03148313 16 1/11 2024-05-13 20:34:03 00:227:23:01:12
- 02: 9c6d7bfb06b1c231096223b67d95e2bd4cec1e32c751218e2779611eb6013444 03152715 16 1/2 2024-05-19 22:51:30 00:221:20:43:45
- 03: b3f3b77f08c8d87ee5a494366234b4c7f270a41b3afe9cb75fb549e8277ebdc2 03153090 16 1/2 2024-05-20 11:52:06 00:221:07:43:09
- 04: 482da2937fcc86532607f7fca41587ab2d0f7fc44997c8c78a3099f4c0ef0989 03154883 16 1/16 2024-05-22 23:11:23 00:218:20:23:52
- 05: 5b81d6e3fd36b99238c0038c088ce9289da50caabf3fe71422ce8cfc6cfe1fd6 03154976 16 2/4 2024-05-23 02:16:14 00:218:17:19:01
- 06: 2c53abcd77cb76a6a334bf8053d11c6e31886225dea0bdb79f11219679de6c91 03155087 16 2/16 2024-05-23 05:47:39 00:218:13:47:36
- 07: 1a29949270490366b83ecb5c7afe0b0f05469a3a77aaac3c31e835d1cb8086f5 03155092 16 2/15 2024-05-23 06:04:44 00:218:13:30:31
- 08: 056dd612a049d478973cb23582c6986314bcf0d8d3652c136da14106f1a4e49b 03155130 16 1/10 2024-05-23 07:41:47 00:218:11:53:28
- 09: 136db2e98005acb0be4855f68f878af01f7dc7a4debdbb38f8418a5abb583493 03155218 16 13/2 2024-05-23 10:30:30 00:218:09:04:45
- 10: fc44fcc3b93f7d2a0426831bd1391988bb57d7c4890630b6333b66b1a9d49237 03155299 16 2/8 2024-05-23 13:25:37 00:218:06:09:38
- 11: 3f00308b83e59ab757aec655e7800512440a834cf172e988dc29799df45902e7 03155304 16 2/9 2024-05-23 13:40:00 00:218:05:55:15
- 12: 3ad9ad1b18406aea32de30df5762a0e451b34939430335a96e904eae32812ea0 03155327 16 2/13 2024-05-23 14:17:47 00:218:05:17:28
- 13: 6624479031c293091bb733555786d12682d50e694ea8c8def198bd1462262423 03155330 16 2/16 2024-05-23 14:22:09 00:218:05:13:06
- 14: 00b94a2712a1488b5dcfd7fb3086d4c326f3f5571d9f190b18dd07364ffdf8b4 03155334 16 2/10 2024-05-23 14:33:41 00:218:05:01:34
- 15: 3a9019a802c6b51a7049c4b916792bc319a19edfe91a9f0c714415a5b0182135 03155338 16 2/16 2024-05-23 14:39:04 00:218:04:56:11
{ "version": 2, "unlock_time": 0, "vin": [ { "key": { "amount": 0, "key_offsets": [ 101705037, 490697, 699338, 58793, 17058, 8622, 46635, 5490, 9879, 17095, 2971, 5638, 5706, 3796, 1139, 296 ], "k_image": "3d541b440c283fd944329d4938f6e2dadb9058ef7a7be7b4e6037226f0b6fe2c" } }, { "key": { "amount": 0, "key_offsets": [ 83239598, 17953624, 1110157, 100559, 533917, 29502, 30410, 2127, 12017, 24761, 29465, 1965, 6261, 972, 1794, 1033 ], "k_image": "271a8d1387e72087618929f43d49a62143588c496e93fdbf5fcf0bffc08e466c" } } ], "vout": [ { "amount": 0, "target": { "tagged_key": { "key": "5b1fba591ed754dbf2bdada18f374b6f91f493d730f0c042a2275d6c5cbc19ff", "view_tag": "99" } } }, { "amount": 0, "target": { "tagged_key": { "key": "d758a87a7cb670851bf6e3bac8283021139d7767778a71554a174140ca4740d1", "view_tag": "49" } } }, { "amount": 0, "target": { "tagged_key": { "key": "91c13a7cc998b30e00f51e0b2912196cec7bc7f405dc28053dca7a853433feb1", "view_tag": "cf" } } }, { "amount": 0, "target": { "tagged_key": { "key": "d946a9c8b1cbfa1dad7d3f430015700611ac47a90dd5f8c4bd094e15a8fb89b0", "view_tag": "08" } } }, { "amount": 0, "target": { "tagged_key": { "key": "e14d61112c8ee57138dff3f76200e8be68cd646b5a5adf51aa12fc2598d97c4e", "view_tag": "a8" } } }, { "amount": 0, "target": { "tagged_key": { "key": "31b496c545f6d6eaddf4a804828bb0472ca8fc4fd3232ea8b2a4ba4e9ade129d", "view_tag": "76" } } }, { "amount": 0, "target": { "tagged_key": { "key": "e5989b6e89c2ce3e3ca0b472608281d53e2ea2f0e46dff90b75aebf409207ce6", "view_tag": "2f" } } }, { "amount": 0, "target": { "tagged_key": { "key": "f1def2f2cc1833c636badedd35e6c55e14d16616002a034aa4ca8bf718ee2478", "view_tag": "32" } } }, { "amount": 0, "target": { "tagged_key": { "key": "0db773443b76c6d65ddc8308c9597c15d5f6dbdb1a4d9740977ae67773d4bcd1", "view_tag": "ed" } } }, { "amount": 0, "target": { "tagged_key": { "key": "ed18077d67bd81e70ade82f9e793c00c36452c840d1bf9711bb6ea3e058a090c", "view_tag": "a7" } } }, { "amount": 0, "target": { "tagged_key": { "key": "0405f8a4b7f34a586038594410b54a5df41d8a6116a663155a5671a0ab498d38", "view_tag": "c5" } } }, { "amount": 0, "target": { "tagged_key": { "key": "fc6985f4b1d06010d646d92e9bee87ab7bfc5623e763013385b37a3c55d71e18", "view_tag": "a8" } } }, { "amount": 0, "target": { "tagged_key": { "key": "71249ceaca8d6759419a7c6dd511fca760de3a2dd850c6b3e1c03ca4d8cd13ab", "view_tag": "0d" } } }, { "amount": 0, "target": { "tagged_key": { "key": "96fc6ad4100ab1b75801178c1788e599d6b54267023d42f0b3dbe83f07e422c9", "view_tag": "05" } } }, { "amount": 0, "target": { "tagged_key": { "key": "be545666301657e9d58a42cd8dd03a0674b1cc6cc9896a902a2abd85076c7e78", "view_tag": "3e" } } }, { "amount": 0, "target": { "tagged_key": { "key": "5a368536cf1539e11f34c42288847f2220d55b35e09335e38774a5fd75b7e3cf", "view_tag": "48" } } } ], "extra": [ 1, 154, 36, 228, 122, 15, 82, 30, 106, 26, 8, 201, 50, 110, 198, 21, 192, 107, 62, 148, 120, 93, 69, 98, 18, 48, 105, 58, 216, 135, 27, 89, 225 ], "rct_signatures": { "type": 6, "txnFee": 137980000, "ecdhInfo": [ { "amount": "3cee07f66701c0cd" }, { "amount": "d566df18d5b302f5" }, { "amount": "642e026918a9f049" }, { "amount": "7151c99d855c2b9c" }, { "amount": "1dcee9deb2e1b423" }, { "amount": "8c6d1d6c270c11ed" }, { "amount": "1f2a758d0d1dc5e2" }, { "amount": "d10cb83e47586f0b" }, { "amount": "9032802f1e11b3a7" }, { "amount": "5c8fa902755d9fe1" }, { "amount": "0101d4802fdc3eaa" }, { "amount": "4aef8813c20b9302" }, { "amount": "a492aaddb74f390c" }, { "amount": "745fae8ff4a38334" }, { "amount": "1a10471826d13336" }, { "amount": "58feab7e3f8454e4" }], "outPk": [ "a9946bb05b66e85c1096409880608f7d40253a0b1b53a97184c34a2ce11dfd28", "6e5d5c657f073f4dd28af196b668fc8cb2d236c476df2f8f808e9de0057f454e", "1dbc10eec26e6c7e939744da42c233ae44ab24fc858741bd0ae142c10256f44d", "0579deb54182b040b7c37d470ea56cce5c97b5e90c863845ac39424dcca6b2eb", "711181128a875d37315a74ca5adae1f9f40850d17d39fe19dff1758fa24e0e78", "e9aa0b78116ad5b6a585df296db0dd326beed12c03c8f71776ba8bbe103bed4f", "61bd11de393b40013ca54c637145f632fb8efbd965ffc1bc3046490e30becaad", "8fb0d9aff3a6c3c6dffeb4033a739f1d5a0d9b6b985caa7f6b062fd05fc481fa", "20e347560d95494238e8c26f5b2bb8b134e2208cd5b31ab6119f7384806e3a35", "40dfca4e4edc74287ba9cfff742d5fe812587670577963d26c111c78c818b4e9", "a55328e09596daf38cf384b5dbf2382ea9d9253536f2528c88bb2ac7af4ee31f", "854d42738c143046c099f0b7496ad2914d9fefa7882271ba026e6693f78336aa", "308e6788677e8ab56c82cc3df2d969469bdb87bb39cf8590b2c1f15c6176cb9d", "4951b4d225115bb07895506fd1feeaaebf647a45ad6dc286b269221934530dd3", "fa201bf9acbaccad73d1a428c649e2da042a6f3b3e5dd9f8f5b4f656bd71e8c9", "ab4ea306a1bee89d826886d0187d0decb728f7f256a4fa66a5b66dd5879b477e"] }, "rctsig_prunable": { "nbp": 1, "bpp": [ { "A": "f663c456b8a0b5b3579e4fd28620053c2230ce910e8650fe32a501db7573581f", "A1": "c683eba4e8143b6fdcab7508a56e118319bd850b34bc08cfc665cf84d8414bce", "B": "5b773b10ad891350e81853f5ed800b5c0b1014c1576fa0cd7753c8fee028a5ac", "r1": "46e732d386ed4c8a5b11a238baba87896ac88357096c4bfc7c0268df5d25e80f", "s1": "418d126e431b28dd75e1a372071c4e7e73b608dc9109b02fdd1363c16c31fc0f", "d1": "6f8d5625cbdb0b626b3406aacce27c350a5a6c61d4df7899afd1ca287c97050d", "L": [ "28cf82a54c301605fd3bc37e27890648fe7baf078a7e078a3c16f5579b54d517", "2c34d161c255b3b6b53c99eba060d2df8c17f39cf796a54c3297639cf8311a1f", "5585cb6c53093430f6d436facdd6ea8895d86b77a4d601484a25ade13045bf51", "5ace9bfb930269b199509bc08d4f1bb1d7aa550331cf23447d8e84513a5e7b44", "2e20c5e6450aa9240a14f19bfba96b762f944d0a8b7482ff98d84c1a086175bf", "fc386c2a2fa3da6668888210c03a36e3bc065bb2f0156cc39467c78666f000b4", "f783e38ae959cdbafb50b735c0a1c212436fe55b4d07ca86be7f786dac138987", "2fa3699586928ddee13a3bc2fdf8d113ffa7ae4e725add20dedc28a16325f503", "af00ac2066e320316f4fdebcd03907aa361619da72006685f342876dab09e2b3", "bff04ad77c8a4c30b4c66d0881caa5c335359e1b1476839452f9d6cd3046764b" ], "R": [ "c47534615ae82bf2d16952dec83a8fac7143fa57f966e06e7ae74db6f7f9d9b4", "4ad152648e2ba955e60eac4d340a1624a837796db865461e07383a9f4cab1461", "f548eee3158556ea1f23488d4dd8b631f50ba5b95fc6d2cdce68403d06d8323f", "3341428c08c352be124942e4e1edfd3dfe682b6c17f854df7e2ba3c2ba34691d", "2e78005cd91964a5b4b3fac595168210e57a324b5b84580e0568bba7389d2c15", "e1f7919c7fef4f670306d330b18bbb176c28eb8f5868e3e7be2af0548d795dd4", "a0cce4a0eb06fdb469aeb64f8b3e14207aa768b970b1cd21fa77248e3bcf1627", "a2e85135c2239302ab24bcb1deb0d62eb57a136089fa65bcea366b0c47edd5d5", "7e5eba026789791adb504be06e0f91a1b8738ea426056a0ad2741bcf6cb86eda", "7f2b764814d134591d7c0fc509ca0b284999e508800272bc518fa6d26e623d43" ] } ], "CLSAGs": [ { "s": [ "c27dacf8c9e1dfb45ac3af46bfbd562525275499248f800f9909f0fc6507860f", "381f08eb34524b494d133f63263fdf4af89c939736967f61760ec9699448c806", "53f36566a5601118ad11ea40c5139a21367532f1ab3bd40bb72ebf30eb530705", "18fc6e55eff806f55df95961e97170cdb42830b6dd671c70ba4ab6d336f63002", "4dbb78b938a31cb161a21aafc4c7e7069f4e1d79c0dc5524d5258af6f4bd3102", "e66132477b9b786e37200d7e0a15bec43518cb954df9facf2e5544a9c59fca05", "888a94475c0110d294619ebb0997660bdc7dca0e4364233b91d7768ae4550100", "cf76608dd6c650cdc45cd90fe1ac522bc8c3fe96b926b2a95d034fb4a77e3301", "1a8d13dcc0ba30e5423498c1145e67fac53e87362661feb2b1140cef49e16806", "aa4a9fbf1f4d740605e41a9ac2140eb101d1146ed24e9eb7b06773695d1e3006", "fa13efef3e122399c59b17e2df2b93869b290a4f5ff38b026754ae38411a8f00", "ecbc4c70a56f5d69feef0a424b9c2809b622a578fc5ffb33c37a5f4b7ee58302", "d9848c8a70e371f08bbb5c22b79b055ab0d32f67f1ec8fb8494df067fd06f60d", "52f5f3e6cc969be1fafbfc3e9f98b8eb5e187b23a92ef3c3a165ee56e9146a0a", "a8c50309b22494e4298755125ed7b9f19591b51136820be043b1e6d3a5eba604", "bbfd9c5c00eef8a7a21cf69d0a5ea652a0c4e90c01d5f43627984200cb13660d"], "c1": "baf2c73e4ef766acba64182b7744ddf5a3d1c0f3b8ca900bf855d708d2af1f0f", "D": "d79b8a5135c4d4f907a7f2b22928a1339637e88daec096fda57914c84ae4409a" }, { "s": [ "4e1bf9b6a5ed93bcf3c5c59c7ce4762d3f82186bfc137f6f45b3431bfb2f470e", "7e736cd745677dae52f9bb8335c092be7f6118be1ce27f0cfafb8c69983f890a", "0f006c5ca4a8b304080bbe5f57cda4b0146c1888e4119a070c5733a00952fb0c", "ec22640fc7ac48f1b13222e9104f85e7d2f49f7c9fff67e2ec37e4b27d3b6e01", "a06ff7c69e61ea56606e0daa1499e255ef723de12afdc68a1d97bd5548b1ff0d", "a0cff04207c1c7e40718dcd07c45397a732544ac079bf66b52032ceae184b705", "b4f74332e889c893cbb7e7f30ac69936cd7fea0771c8ca6ebcce8b67a8e40b06", "a1c06b5390d966fbdee48162ed5802226f8dfef9703fc4e271d9c075243cbf04", "600bfbaf66dc10ea57627a92dd19ce4ed50972b9b344304d412a2047aeb82801", "c6f5b26669014f292c035eb55d5f0cd013784aede84e9861fc37898ee337cd01", "a0e2acfa9b064ed9342ca04e3c86a8c73f09ea60977375212b356a9d35d21500", "b52d32a70d3e3871ab72ed781fea44e328c653a27b4add7ae318633bf1b95405", "3d349f4b3c3001c891f1f226b33f48f3cd5a6fa19b481ec8c8f25bf0ac741a00", "45a22b6f30add2b257f58b46eefef448d3ade894fb803fbb42f19ed28de1fb04", "348a0c717accc6eb7b4327d33943c353db141d2cf6c4810317dae02a2e7d9a00", "c40f78f19ec8fd16f7a883a52aa79021aec7dd611a4536f70e9c80633e12290a"], "c1": "c8fdb8741fd0566de3b89b304ab8126102f3b6b9bdaace0c14188a503c91890e", "D": "5781be1d1b2f11f00f68f1f128226b499dcb47e25a9b20e0ff8e22c20a6e57fa" }], "pseudoOuts": [ "75aa33d2938b38c464c5e844d597cd4348606bbec5be5575f20053ddfb606dbb", "23ef4d788c9c15148ffd5e3fd560e505275873ec3a5df71b06300e52af3b0bb4"] } }


Less details
source code | explorer version (api): master-2023-03-28-d669720 (1.2) | monero version: 0.18.2.2-eac1b86bb