Onion Monero Blockchain Explorer

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

Autorefresh is OFF

Tx hash: 7c0caf29f6d74d2d7714bde4e19ac89d9bedf43d125fa4e4f9432ce92c07176c

Tx prefix hash: 81a7ec5d59df57fb9634b6ab4eacf091fa4aeee85d4ee751affde4c550568096
Tx public key: ff6a7dbd62650c167994c50a532cc72fc1b16d2dfd996ce23e1cd9d102db2e02
Timestamp: 1687773126 Timestamp [UTC]: 2023-06-26 09:52:06 Age [y:d:h:m:s]: 01:178:17:06:35
Block: 2916466 Fee (per_kB): 0.000137980000 (0.000041013504) Tx size: 3.3643 kB
Tx version: 2 No of confirmations: 391053 RingCT/type: yes/6
Extra: 01ff6a7dbd62650c167994c50a532cc72fc1b16d2dfd996ce23e1cd9d102db2e02

16 output(s) for total of ? xmr

stealth address amount amount idx tag
00: c25ee9150a34e2f0357ae70461b129ad7d8c3c012e7b473bf6ad7189695fe476 ? 75870643 of 122016068 <14>
01: ddb7f111c31d27112a98d3dde9b3fc3d84a3310841921ceb72236f51b0c4342d ? 75870644 of 122016068 <91>
02: e3de1c4c841dd825a7cd39d09b9da2e4dc405ed9f391bde3885f1fc59aa5b16f ? 75870645 of 122016068 <0e>
03: 1ab1b8d3478bf1eea228575c4faedc67fbea3e4aa1babf09f0d06fd77d412a7a ? 75870646 of 122016068 <06>
04: d1dae453f6dd17b71278112c8215f39ee3219025b1fe5bcf1803dd1986ee1eb1 ? 75870647 of 122016068 <42>
05: 5b359f7fcef81da6c4a9f8f824a427f47e2553c74d362918ff22af2437e13242 ? 75870648 of 122016068 <28>
06: 43c138e580f4bed0aa994b11afa7c3ff161c6032cd223b0cae2ee13d4cce8781 ? 75870649 of 122016068 <6d>
07: 6138bc1f0e6a9eecc47e9894490902460167840658694fdb73a6f61a8ec32055 ? 75870650 of 122016068 <e6>
08: dcc43fa643e31f8fdd0221ba25bd7daa01d129e8fb4fef5fa80290ead7ab5984 ? 75870651 of 122016068 <a4>
09: 382571ef2ea86c5fbce23c9e1528e7475c6181ef5383e1f7fe4e7465f408631f ? 75870652 of 122016068 <5c>
10: d1802e295b1e81d749ca136ca9619f2942c0a5835404704f5836b358d8b01fb9 ? 75870653 of 122016068 <39>
11: 4aa3ef82a481ee88376f3a17769401b7a324293c2bd676a2d91e5b2c8624c1e0 ? 75870654 of 122016068 <a8>
12: 19daff3f9e7cc655b974bbd2fc098cf6df300af1c79cb509093502fb3f1011e7 ? 75870655 of 122016068 <d4>
13: d6a8f01d9324e8714ecd061538beb0e4b952139f122c8bfdbe09d95247940f2d ? 75870656 of 122016068 <01>
14: 784eeb29c33f2a9315fb6d2dedbf9e0a19589874053494be2653d62122d7d619 ? 75870657 of 122016068 <ac>
15: 399ac34892e85ad7f117e4cecef5427dcffa63b28477588a60beb6ed07dbf789 ? 75870658 of 122016068 <06>

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 2022-08-28 09:13:34 till 2023-06-26 10:38:51; resolution: 1.78 days)

  • |_*___________________________________________________________________________________________________________________________________________*________________*__*______**|
  • |____________________________________________________________________________________________________________________________________________________________________*___**|

2 input(s) for total of ? xmr

key image 00: dbe5fc6de2dd498041f2420b1e2b9399adf350b1d8bcc30b773884efc73f7859 amount: ?
ring members blk ring size in/out timestamp age [y:d:h:m:s]
- 00: a420a7970fd9402852f860f9c7663d52487d16e76317a5f0b0447cb83bd15e75 02699410 16 1/2 2022-08-28 10:13:34 02:115:16:45:07
- 01: 2448abcc72991f0327d25642af4e32e011d1cbc06b79742fbb1fcdb8f8678c89 02880061 16 2/2 2023-05-06 17:42:27 01:229:09:16:14
- 02: f7dbf091357b06878ebe8528789d6349f66c6634b783e5f0ca7d13da40942bb5 02901534 16 1/2 2023-06-05 15:01:21 01:199:11:57:20
- 03: 74151d310bd22f3308fce20c7b09c760d0fd37fce5d492da5c87856d1f71ea53 02905443 16 2/2 2023-06-11 01:33:37 01:194:01:25:04
- 04: 0361fee99927e8fbd327905762cdb8a8a08d04378c8f4b57f9a61fd5d17f150b 02914508 16 1/2 2023-06-23 15:51:58 01:181:11:06:43
- 05: 3a089f129c68816b16bb980020bd86a7edfd63fde6823152639633a756423716 02915801 16 1/2 2023-06-25 11:16:23 01:179:15:42:18
- 06: 8949231c277f2857b27bfe75309f69cb5c3bdc8d168c2b43d67d8cc9da20340e 02915935 16 2/2 2023-06-25 16:02:38 01:179:10:56:03
- 07: 330dc435167aa84d47329beb3a5f66785ea7371fd56034d9f1eac2a3ccb1c646 02915963 16 2/2 2023-06-25 17:17:34 01:179:09:41:07
- 08: c90c54f8536f3468bfffeb67545cfc493cd1fcd56e14a6ea224fb4b68ce72902 02916200 16 13/2 2023-06-26 01:00:25 01:179:01:58:16
- 09: 78869038a1ca02e163eb1a72d17004ab2cedf460140a5a182b59e23857df633d 02916242 16 2/2 2023-06-26 02:47:34 01:179:00:11:07
- 10: 17b532744067361c147b9fbdc9ad4d0196d3634354dbfa78f73445751f4df349 02916355 16 1/2 2023-06-26 06:18:22 01:178:20:40:19
- 11: 124b2ac4f71d6d4e1146a0c60eb5ebefaa3f4d6b399d638b865608033599f7ce 02916403 16 2/2 2023-06-26 07:59:49 01:178:18:58:52
- 12: cae8692c6c3fafc83cea309b0aefd45dfd39d114260f4717bb19fc88ac6ae3d8 02916435 16 2/2 2023-06-26 09:11:27 01:178:17:47:14
- 13: 2641b6d21f658d82759b52589b916e688b77cde7eb212cb7e1e8e5a0b7ff1971 02916443 16 2/2 2023-06-26 09:26:24 01:178:17:32:17
- 14: 30bb80a125563b98fe030314454a453a6f2076565e6bd3d3c15defae2233d95b 02916449 16 2/2 2023-06-26 09:33:08 01:178:17:25:33
- 15: 1b8c4746293b0bc9c23140f81064ff8f62e253cb01adc66bd057dead0233bab3 02916453 16 2/2 2023-06-26 09:38:51 01:178:17:19:50
key image 01: 591bdd9c45ff2a0c93f6f00c73c779b8386424cea90ad0d99d56389a8051b0a0 amount: ?
ring members blk ring size in/out timestamp age [y:d:h:m:s]
- 00: 906a3e343fd37708e5e93e4acfb7100dd34b7a53825fbdab5e94e797537fd630 02908933 16 2/2 2023-06-15 20:47:27 01:189:06:11:14
- 01: dd52743097211c125c1da1a2eb107dd484bca18d62534d08643029d68809b9f6 02915079 0 0/38 2023-06-24 10:38:05 01:180:16:20:36
- 02: 938cc21a1be1973c885b02474049e3b5c0b0be42bfb8c60bd2a6cb9a4f482f5a 02915381 16 1/2 2023-06-24 20:36:28 01:180:06:22:13
- 03: e7f34647e10549ab3dfd45730e1d448c2205c3da1eb8092bff7db5cac7554627 02915808 16 2/16 2023-06-25 11:28:47 01:179:15:29:54
- 04: 1615c484d2d4876a8be7b2215e518945a9e88e73cc0b2bb24ee2010dbf778d11 02916048 16 2/2 2023-06-25 20:07:21 01:179:06:51:20
- 05: 12c245bdf5ef106f9cbb0416b64cae226983a429dffed285a8387c719d64c3bb 02916067 16 2/2 2023-06-25 20:44:33 01:179:06:14:08
- 06: 37d72b7464a6859d3b8c14fbdb1412f7651dcad624a83202b4c4fd3947cf616d 02916082 16 2/2 2023-06-25 21:14:43 01:179:05:43:58
- 07: 6b46ae385620a4d55f974e31a7b17e85b292ad4be38e243cdc0daefe09ca5dc1 02916196 16 2/9 2023-06-26 00:55:19 01:179:02:03:22
- 08: 036635ff82769957e3edeada50905ccbc7bbbebadebf84037942f0683248b26d 02916203 16 2/2 2023-06-26 01:10:46 01:179:01:47:55
- 09: eec9298a1d20d3bfddcd06402f92e5eda064a6ee4854ed304c825f3b8835cba6 02916287 0 0/527 2023-06-26 04:09:09 01:178:22:49:32
- 10: 61b48f689158c8db5f2924b7ef61a89322596e2bfb1936a2a3cbde1e56f7a19e 02916300 16 1/2 2023-06-26 04:29:19 01:178:22:29:22
- 11: 36d80dd226012893d84541800fdba1f594000f0d6076a73f632ab5a27764516e 02916420 16 2/2 2023-06-26 08:36:19 01:178:18:22:22
- 12: 896d8fa2e16ee07a24dba123c726ba7674db0f49639fdae2caef4cbe5eec6396 02916424 16 2/2 2023-06-26 08:44:18 01:178:18:14:23
- 13: a1f3a200226c3fcf92a69aa8a60b57ee422b0f1dd43ecc6cb2041ed33885da4b 02916425 16 1/2 2023-06-26 08:46:16 01:178:18:12:25
- 14: b0984b9f0bf3588ae6358b3388fb1479c7fe62c61ac0c23157ba80550f8c9f42 02916431 16 1/2 2023-06-26 09:02:23 01:178:17:56:18
- 15: f2c1e8ddc961afa22e46bad94fd4dec94a1b47e378a4f77b805d2dc9c287ea81 02916441 16 2/2 2023-06-26 09:21:24 01:178:17:37:17
{ "version": 2, "unlock_time": 0, "vin": [ { "key": { "amount": 0, "key_offsets": [ 60389858, 12466276, 1865776, 303407, 648039, 81494, 26980, 7744, 46270, 6733, 13840, 7022, 4596, 788, 552, 391 ], "k_image": "dbe5fc6de2dd498041f2420b1e2b9399adf350b1d8bcc30b773884efc73f7859" } }, { "key": { "amount": 0, "key_offsets": [ 75279343, 428622, 20819, 26945, 52130, 3886, 3371, 20509, 615, 11191, 2040, 15801, 708, 278, 986, 1432 ], "k_image": "591bdd9c45ff2a0c93f6f00c73c779b8386424cea90ad0d99d56389a8051b0a0" } } ], "vout": [ { "amount": 0, "target": { "tagged_key": { "key": "c25ee9150a34e2f0357ae70461b129ad7d8c3c012e7b473bf6ad7189695fe476", "view_tag": "14" } } }, { "amount": 0, "target": { "tagged_key": { "key": "ddb7f111c31d27112a98d3dde9b3fc3d84a3310841921ceb72236f51b0c4342d", "view_tag": "91" } } }, { "amount": 0, "target": { "tagged_key": { "key": "e3de1c4c841dd825a7cd39d09b9da2e4dc405ed9f391bde3885f1fc59aa5b16f", "view_tag": "0e" } } }, { "amount": 0, "target": { "tagged_key": { "key": "1ab1b8d3478bf1eea228575c4faedc67fbea3e4aa1babf09f0d06fd77d412a7a", "view_tag": "06" } } }, { "amount": 0, "target": { "tagged_key": { "key": "d1dae453f6dd17b71278112c8215f39ee3219025b1fe5bcf1803dd1986ee1eb1", "view_tag": "42" } } }, { "amount": 0, "target": { "tagged_key": { "key": "5b359f7fcef81da6c4a9f8f824a427f47e2553c74d362918ff22af2437e13242", "view_tag": "28" } } }, { "amount": 0, "target": { "tagged_key": { "key": "43c138e580f4bed0aa994b11afa7c3ff161c6032cd223b0cae2ee13d4cce8781", "view_tag": "6d" } } }, { "amount": 0, "target": { "tagged_key": { "key": "6138bc1f0e6a9eecc47e9894490902460167840658694fdb73a6f61a8ec32055", "view_tag": "e6" } } }, { "amount": 0, "target": { "tagged_key": { "key": "dcc43fa643e31f8fdd0221ba25bd7daa01d129e8fb4fef5fa80290ead7ab5984", "view_tag": "a4" } } }, { "amount": 0, "target": { "tagged_key": { "key": "382571ef2ea86c5fbce23c9e1528e7475c6181ef5383e1f7fe4e7465f408631f", "view_tag": "5c" } } }, { "amount": 0, "target": { "tagged_key": { "key": "d1802e295b1e81d749ca136ca9619f2942c0a5835404704f5836b358d8b01fb9", "view_tag": "39" } } }, { "amount": 0, "target": { "tagged_key": { "key": "4aa3ef82a481ee88376f3a17769401b7a324293c2bd676a2d91e5b2c8624c1e0", "view_tag": "a8" } } }, { "amount": 0, "target": { "tagged_key": { "key": "19daff3f9e7cc655b974bbd2fc098cf6df300af1c79cb509093502fb3f1011e7", "view_tag": "d4" } } }, { "amount": 0, "target": { "tagged_key": { "key": "d6a8f01d9324e8714ecd061538beb0e4b952139f122c8bfdbe09d95247940f2d", "view_tag": "01" } } }, { "amount": 0, "target": { "tagged_key": { "key": "784eeb29c33f2a9315fb6d2dedbf9e0a19589874053494be2653d62122d7d619", "view_tag": "ac" } } }, { "amount": 0, "target": { "tagged_key": { "key": "399ac34892e85ad7f117e4cecef5427dcffa63b28477588a60beb6ed07dbf789", "view_tag": "06" } } } ], "extra": [ 1, 255, 106, 125, 189, 98, 101, 12, 22, 121, 148, 197, 10, 83, 44, 199, 47, 193, 177, 109, 45, 253, 153, 108, 226, 62, 28, 217, 209, 2, 219, 46, 2 ], "rct_signatures": { "type": 6, "txnFee": 137980000, "ecdhInfo": [ { "amount": "dea73808cc635806" }, { "amount": "c98f65f795b7ba86" }, { "amount": "7039ec4aed70c1e0" }, { "amount": "ccf26a7964fdb63f" }, { "amount": "56b1f1f21465079f" }, { "amount": "35acfd9fbdf24b20" }, { "amount": "905c1bc511fe55b6" }, { "amount": "ddd1121a738f7127" }, { "amount": "f4fdf048ae2e9b33" }, { "amount": "20b3884ba884ad5f" }, { "amount": "9bd46ff6b9f94c1b" }, { "amount": "8a08117a6a23f019" }, { "amount": "1914950a7676566d" }, { "amount": "04691b00eee3f140" }, { "amount": "03759e1a8ff2e62a" }, { "amount": "e346f2a7fda38c17" }], "outPk": [ "1ad671df82f700506c011322a148dafa84a26cbc886736f2a09441c28b3a0dfc", "315a21a97e9c42b7aed23382dbf4d837cc9d146a7bd8cf04246653dd94e04893", "eaaef9a0ad59910b2ae5168b6471a49ffc7132e73338226751a7b8bd8d772fbb", "1c5b93115442de4ee35ecc43764d218a0c9213190298398349fed192b9eca29d", "408e05e151d1f6802d147fd3ddf9f2d7547722dd78f36bbd8b23092b98711e13", "b27f59677dd16af7774c1998f42374ccc999d16165b3cec3ef755c02e7c1de78", "b8c214d00e9980cee6624796b45fae2f13dff2643d9e2527649cc1aa20880652", "9413eb8fa5d146e2661a7c6bd119de26f3cf81e105947463fa3a9a966f6d25bd", "081bbe780b4aee7dade94779ac920a29ebd3b8e83fe4657e08261aaf2b341eb8", "32de27affa8d3bb7133c3712f90e12ecf8e7965d31371bcaabc3e3a813ed2ef8", "753844548b0516066559636926155210d402169d818ff8ae1e3e87e13a182c37", "b703b862d5d98cd8ca414f22045bb37bcbb76605346cf1673fbcce0a0b21c74e", "536c2745da7c40bfee1b81dbfddd43735f8163783299185aa9a200ccd395902c", "a80d4c76e33ad3cac68b3126c7fe0d2724f5bf5a968fffdcf7d6dfd11f08e407", "9aba26894061ed7ddee9db3aeb53f54bad0f586515d59db49eb888d6104f8a7e", "6c83c3db9f67a2af3b77321bb12f14ef90552f90b0422db807393ed55105b009"] }, "rctsig_prunable": { "nbp": 1, "bpp": [ { "A": "9998d6e0157d269ceb78c8f3477fdf9059f076795d68e11626e76c753cef4ac9", "A1": "8172378efbc263759755b4fa395667ec15a6d2efc9e9409ff5bed2c1cb303fce", "B": "8d363bb7eca6995af42936385a1e46701247dd7fb647330a55095887e85ae49b", "r1": "a4be0b32bdd8b5fd23cff0e09d91c46377f635585e9f867c60801ef8f4a49f07", "s1": "541a9911e9276c3078565a205fd2627ef87a08e5cc5fb82cea2747822082ae0a", "d1": "2771ee1d774328f4b5c2b58678a98bc2834e70a9d5ef7dc238b7ce4fa3bed502", "L": [ "7fb06fe71a079dedd42cd8287f558121a06fa81c30b7d8755383a7b2bd81fba9", "95f88a0a9ffa14a06c1fe2d1cbd03af1652e4441a158873432c901e6f89f6504", "3e48ef6f2f4ebd8e76b51d327dc688971fd9a4f2ba9385cdbd650b38e4606bff", "a0249ad21bdfc94b4093e8de2f9c1f62f3096bd02f4b20d0fc737a827cf1adbf", "0fad8f677bc419a10089f3e35239e94ade44bbffbad52c3b7ba6ad7126ec0747", "39f331ea9ecd30c2ade16e23cd5fb3bfe46644edd53136e644aa1b8f76e49cfd", "9a7321b58ee1a78ce51917363ee251444b72a62d8060c517b0fdbf86bbaf7bc5", "fedbd90cfbbb15f84d5a3d56d6455f02f1d010ac1943fa5d3b0a48e5fc33ca65", "700738016a35712be5130f1fc9691ba55c2178b8f8dbf595119276b4f8f6310f", "154452b903bd44f014054cbb8790c197cba432278575daff5a896598b08c535a" ], "R": [ "7742e85a9b203c0e238dc7e06ebcf30bba610339c01daf7aa0056ae80f55eb3e", "c951775e968f23f7b84d1c08ffdbd481ab1cb045c22a7f9f9bab215a6cb2f12d", "75ee78da956a6f322d32fccc677e0561f3dbe08ae19c556b9fd08f5af104d3e6", "de945e2444ad744ad06b737e956d555031ff1b016730528d81d07145e4f903b8", "fb7c0725b4b7cbf31f106193eee69fb860f34dc4c28d1f7e3ca51cf787add31b", "e3b31d57d3bf4f813b983b63ee57c01d2fd36858e87c7abfeb4868b300de2a97", "a2e91166b76f7760a9b41136769a0aead215171a29f6843967284db8b41c7c0a", "ef5b98c9f8bf14b1928a269fbaebdb16d9ad6746655816af505e092e88934d11", "95eec3ce81e18d6e6e34303c7df0acbdd52ea44f11486804d9c541cd945ca45c", "3b156f5e1c38cfaa79801b954ec3495fe70bbf6d20f998fc849d26a26baaf8a4" ] } ], "CLSAGs": [ { "s": [ "094259eeaa9be0d54759ce283752ded3c94a23ef88bd82038c114e18e7bd4509", "298ae9666e1b96086a4024d82c9f2932288aa008fbea9a5ca61f7bfac98c7f0d", "5a6fbdc427588066ecbf00568e34aefa79b8752d814495fb0c43ae55a36cb808", "5ea9badb9a1d39336c09ea790e943b867721e656161448d36da3af7125ba5f08", "5bf929a74a535c330c1923893040703f92dfa6365fae65e58d8bf3a30301ba03", "17e02baf5f1175f522995c3018228e5a8922b28de1a0c191212b95560a7c8c07", "15fe47cb8ac887a4ab5d853d8583228923bb27240d8bca7b299cc5e3ead56f01", "2781c5b5a99d8435751e544874d6697399ab9e17252afe7b5c2a3df6ae5cde07", "bdac1b3304b21c19bfe7ad7b10815aa2717e62640d386ee73e6e8229e5104301", "c9e696a34b5a488913b43807fbd50f786d8af94b96fa94c641fac6a69935470c", "9a1c59a408824c51650c8209d24e5a41c84b751af3c71b0b92a1255b3ce0a607", "0ad52b06d15f0d0297f0c1378402118e8f9ef3bfc5e5d06beba4ec71abccd502", "f06cc2846a71da789ea10222f45d81b8b1c99662f8d581854fbea5630c3c3207", "6d3ee7369e3aded8ab12ac8a4f38dddfc930f283981655dac189e5d967b27606", "912017193040249be0c47112eaf99779495cc4c1b3f45da7b8d35f3d919b6706", "ce9ffae93e3b852bbbeb0efbb0041e4f3f21ca34674c2d415106d64b32184304"], "c1": "6c8e09fc041eedacfb840e2878fd3b24cbc458061d6855f1c948f7710e86e802", "D": "345185e35b3a5434593fd0ef8907b576fcdb09cbb5a825aa6aa5b0895bdf967b" }, { "s": [ "a48422e0b4c6930e4de894e9cb3f858c5622bd6f9163832c662adf621b0cf50c", "2222da0c5bf5e1bf68b27d44bc8980fe646e42bec47c93b951e1ccfc2fb3bf02", "cd80eb315f63ce28460d2412c164380ce3bffcf5e488d5a1c18b7fc3fb46da0d", "202dc325a7da79ede15383ea4aa1a178e335aee98039ed7a629ef6ed99364a05", "68a8eeb9cd81ae832b0319d2a5843fa77b998f95c482374d20fa9851f48a5e04", "c66559587dc5a1470c706da53f21b7629b7276c5a7eb25df4509b86c06d29b08", "3d80bfae3b9dde139a7e352e9af1327631bdd54d39905eb9dd9ef7ed8abec004", "b029c1002c3694901e475a5398058261f939a6839bfd9ade8ee7aaa99fd7be0f", "751d6c58f2997a948934c778b7604c67cdd08757098c56b3ca2e6629b98a8203", "4344a349b2508e0c3afb824e70f86d8536331c0fa94d0ba1ff08b2d28e334b01", "b144b141ba8caa7bd11f11960cb289924d0ba87183a45874b7c548211c0d7307", "5b58ab93d3a8c47b686cc9808273f82bc96ef157e0c89860c3ceec9404b4ff06", "4c199d612354a70858e8cd2539e383c819639a5adac45193ff3fe2d6738b0209", "856236609fbbbc396e1649beaa4bcd3ac81f2356cf78c967b03385d40a59a202", "592d09e927c68d54f49db3c4bd65ae15e04ea5e20e433f0708a9fa1ab4246207", "50b57db5bf1e87b61a76607c6d835206ac93d3f048984181db00747f94855802"], "c1": "fabfc6bee085eb20e8a83efe1b72650040af9397c7cc7304093ac1e65cb7f50b", "D": "d90bbd6e1936ef9da9f749508c1d874e267a85f77cad56867cf3c3d81a2c64db" }], "pseudoOuts": [ "4509b064580c3921d0bdc32475b1a68ebddc13646cb47bfae79febf3c4fca73a", "d3e9dda3de46d314588cb35102740fbcb58e99d988fc3fc198bd00260adf3bf9"] } }


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