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($)Français
Résumé
Statut
Confirmé
Entrée
1.64977994 BTC
Sortie
1.64958284 BTC
Sigops
159
Frais
0.00019710 BTC
Taux de Frais(BTC/kVB)
0.00003000 BTC
Autres Explorateurs
Transaction
Entrée (3)1.64977994 BTC
Sortie (197)1.64958284 BTC
Scripts d'Entrée
P2WPKH_V0(witness)304402202f4328f80513e78ecf189660294758fe4085e13fb5ac35013c7c077f6551dffa022031eb1413a68470d2af0d88c0f9200711dc19686ed582611cb263deae91e10eb901025ee5300923e9f28cc85e33206f367c0a240c302c5fe46a2f057218696b3e0d75P2WPKH_V0(witness)3044022026d53e5828044aa99a115389ba5bf2e19be9a193b6ec8284070c0ee493530932022067c2ba26819cf673223c9951a2a58704b900ec140ec70fedbfb5b89d0ba56c7c0103dd6de5e1196045b75ad67c1e262b17cadfb5e7ff2c1d06243d35a7713cf37d1fP2WPKH_V0(witness)30440220094b63fa09b010876c5d3a751af7c209d9c63f7314f1aae44662a57bb9a7b72f02203f5f587b544fa867021ce98db095ec2ae621e9e70a2109843b269e89da89935f01020d49b53ad531d1bd026efdbbcffed257c65673986605592a1a5b4a87cdb0b7e5Scripts de Sortie
P2SHOP_HASH160 4547c99f62a6b24310dfe39b62b6e1413b38e24c OP_EQUALP2WPKH_V0OP_0 3717e2f5a9f80a218d84079908e7d26e239ccf8bP2PKHOP_DUP OP_HASH160 acbb48902af985824f733cde3b55649de4b41a2e OP_EQUALVERIFY OP_CHECKSIGP2PKHOP_DUP OP_HASH160 7ee1e842dcac86cc96bb9138aa25af7e3f0573de OP_EQUALVERIFY OP_CHECKSIGP2SHOP_HASH160 c5ccdc026d797189e911147be2fe9816284aca6d OP_EQUALP2SHOP_HASH160 f96ab27b5e9c87192fde3c08c0b04a37b9470aa1 OP_EQUALP2SHOP_HASH160 f7e08acaf21e519027a3df95bc1e41baf8340d7c OP_EQUALP2WPKH_V0OP_0 4d37e55abae0e5bcb4fb742a4e03202f868ee431P2WPKH_V0OP_0 ecc9f69f1f70756984e953a671cd7523db22159eP2PKHOP_DUP OP_HASH160 cea37c9a712421dcd1d01ed2faf57987e079c068 OP_EQUALVERIFY OP_CHECKSIGP2SHOP_HASH160 29f8d0b878136e4d4cbbfd7e0757b0764eb1a125 OP_EQUALP2SHOP_HASH160 908715d033ced12dd3abb41dcf3befc63b8a2ee2 OP_EQUALP2SHOP_HASH160 ca48a1491d1ff6e20ff1d2b6d823d41d07afbe78 OP_EQUALP2WPKH_V0OP_0 a8827d44527065ab9e186c022fa6621c86cfdec1P2SHOP_HASH160 ec3ad22a7e6a4ee56bdf9c66b7bdf4779cf65b96 OP_EQUALP2PKHOP_DUP OP_HASH160 44c3cd1e8d9783ff993c46b7d29afd3e9597ac3e OP_EQUALVERIFY OP_CHECKSIGP2WPKH_V0OP_0 51c9455586b38283d7342f9c34e7c67c54ece6caP2SHOP_HASH160 31264abac62afe8bdae88a5059110feee3a499bc OP_EQUALP2PKHOP_DUP OP_HASH160 41ddab4450d77d8f6c476d087c05ea8146ecb06f OP_EQUALVERIFY OP_CHECKSIGP2SHOP_HASH160 134b0586ca3bbd0790110c6d5db958bf3a32f20d OP_EQUALP2PKHOP_DUP OP_HASH160 bccaf8f00f661f6dfe6df3f558e01dde1a8e5698 OP_EQUALVERIFY OP_CHECKSIGP2SHOP_HASH160 362a2f5598aa8ed3909e33ae69ff4f57b3c16b7d OP_EQUALP2WPKH_V0OP_0 74b96e4c13d183848489b53b97eed42925234720P2PKHOP_DUP OP_HASH160 3c5792e958c5d23eaa577328d41fcebd26b1b21d OP_EQUALVERIFY OP_CHECKSIGP2SHOP_HASH160 053e65dd07952633e9484ba523ee7eae90779731 OP_EQUALP2WPKH_V0OP_0 ca77d0937dad665c55b5df13267778229a580453P2PKHOP_DUP OP_HASH160 2556d5ea40e8a5ec2aa7728438607f07fc46d3ef OP_EQUALVERIFY OP_CHECKSIGP2SHOP_HASH160 0286f6a257f90eb620956d9a3b1c086fd16f66e6 OP_EQUALP2SHOP_HASH160 401f69b331fa0b2127dfff940fb5e9d7b7265edf OP_EQUALP2WPKH_V0OP_0 ef9e1cff1870a50cfba32add5fbbba9c2db11466P2SHOP_HASH160 51cefedf6622e6cee9edcc0bae3a15be70766af3 OP_EQUALP2SHOP_HASH160 e58e481bdb968e9e908bea540f2b9522df8df0ee OP_EQUALP2SHOP_HASH160 bd356819f6dd3e5de69885210d19b48ee60c1fee OP_EQUALP2PKHOP_DUP OP_HASH160 0361bc67e130221d00e95a9e40c87f976a428bd6 OP_EQUALVERIFY OP_CHECKSIGP2WSH_V0OP_0 e1e4f5fc4b0ca900d8b8e03acc105a2d6e1870e1fc5d489a8cd27db432aa9b1dP2PKHOP_DUP OP_HASH160 ff83c854e417dcf93284446372c438506c5ca714 OP_EQUALVERIFY OP_CHECKSIGP2WPKH_V0OP_0 8973d40cb66092000cc8ca0a4b5e962549c35d9eP2WPKH_V0OP_0 df66996edbfaf8fc4e36e688a09a459bb85977f2P2WPKH_V0OP_0 96d527e75bef4f2de524af12eb1b56607fc81c1bP2SHOP_HASH160 9ee99b2b3f3866036889b3099e8a317372229f3b OP_EQUALP2SHOP_HASH160 20127b4275a2b9b90856bf817d738c78cc6798fb OP_EQUALP2SHOP_HASH160 765bbadd8efb1c3692f9cffa6962bb3a5e3b1eb4 OP_EQUALP2PKHOP_DUP OP_HASH160 1c4c8700faffd089f4af0d01d6b590a69cd1a95e OP_EQUALVERIFY OP_CHECKSIGP2WPKH_V0OP_0 d7c52f3cfe11e4aacf462a67c1b43ffdb6beb255P2SHOP_HASH160 12be3c73b8e71abe638166db7c17207943238d41 OP_EQUALP2SHOP_HASH160 ab870453eca9f19017c6afb0a4d03121e932f70f OP_EQUALP2SHOP_HASH160 da667ac939f5f45f52284d6f399c629991602d35 OP_EQUALP2SHOP_HASH160 f79f1fae6aeebf850768f8a17bdce9cfac3f0cf8 OP_EQUALP2SHOP_HASH160 5f4ea36d82a95cef94b1ee066b17fd45fd1cb92f OP_EQUALP2WPKH_V0OP_0 cd8c1ee89eff4c0c7d19bc5b6a0ae47d545dc176P2SHOP_HASH160 27ab268fbecf6f3bc9e60b369734818bf50b0df0 OP_EQUALP2SHOP_HASH160 f85e9765ad86aa64c1223898f007b90892f5a714 OP_EQUALP2WPKH_V0OP_0 cd4058ebda9d9ca4e834fba60b477a3a52e0abdfP2SHOP_HASH160 95c94694724cc811d7f94b7864ab254b2e4503e9 OP_EQUALP2SHOP_HASH160 3d0ef4cec4c9b17055c278a0371444d51abbe31b OP_EQUALP2WPKH_V0OP_0 5c56ed032dd371de637cc288050d9b8bdc823b69P2PKHOP_DUP OP_HASH160 9d8807b3dbfba2274a02367a72787afa9a6fa333 OP_EQUALVERIFY OP_CHECKSIGP2PKHOP_DUP OP_HASH160 ce7899e613ec1ce99508e7c33e8daa143be2360c OP_EQUALVERIFY OP_CHECKSIGP2SHOP_HASH160 bcc415674e29d13f2cad5aa194cbb1439497661b OP_EQUALP2SHOP_HASH160 93212185c0a50dd5ae7a43f847303f16864a6177 OP_EQUALP2SHOP_HASH160 537c5fcf324c192b3d730a625019bb6e1cef53cb OP_EQUALP2WPKH_V0OP_0 91939490f8f9c42c1d02f267fd95442c3ef74509P2WPKH_V0OP_0 7a250bd9f7044eac11e9c0c56e19b68501fe04d8P2WPKH_V0OP_0 f9a00babf296e9b5b4507d78aacac7c366e5829eP2SHOP_HASH160 b679e078ce4f4b580d1bbd9e58c15f3cba360c10 OP_EQUALP2SHOP_HASH160 6a97ca9b676ef680deefe3c498b7a005d7302b6c OP_EQUALP2WPKH_V0OP_0 ef4b870f88b5ade76230fb660e16ef49043e81a5P2WPKH_V0OP_0 2f0a91aea33f4a786d5f51768b329a1d44030ee2P2PKHOP_DUP OP_HASH160 da3f3776f9fb1fe8475dddc23f63ac59f190df48 OP_EQUALVERIFY OP_CHECKSIGP2WPKH_V0OP_0 a8a965a804160b9e98030b6e810eff08a870ac7dP2SHOP_HASH160 f4f3f0af9a89a531c9b6c9202566715ea1109bab OP_EQUALP2PKHOP_DUP OP_HASH160 57f081b5ebb4f6680e0e759b6365206004b9c525 OP_EQUALVERIFY OP_CHECKSIGP2WPKH_V0OP_0 367aa0f81b52d935ca321237e4e6e1c09fbde0c5P2SHOP_HASH160 47d9c8ac6e60b82d3400f7261870da21e6345ff5 OP_EQUALP2SHOP_HASH160 91d0178bf6c4f8017de00eded9dd7e3e3240f0b9 OP_EQUALP2SHOP_HASH160 819b7b79c4e56e5d637824d7d09c934e2d753994 OP_EQUALP2WPKH_V0OP_0 a55217395ec1b213d165f4d940cbdb630d0cc76fP2WPKH_V0OP_0 7589fbdaf008a64eef33efd6d491d9fa20284e80P2SHOP_HASH160 fb48add5ea8d4d7935da2d6a281b86cb7eedf99b OP_EQUALP2SHOP_HASH160 8aafb2b7c307987079f45efb4ae59855b9adffb4 OP_EQUALP2WPKH_V0OP_0 1793f70b9bc23fd61bf5eb14c4d4c22e63e523fdP2SHOP_HASH160 40de0898b239bac4fb633faa3bfed6a87ee93bdf OP_EQUALP2SHOP_HASH160 08ea7873827ba61b269a5ccf772b922e64f01064 OP_EQUALP2PKHOP_DUP OP_HASH160 8d552233fdc30239422a55e7a097b364f9011221 OP_EQUALVERIFY OP_CHECKSIGP2SHOP_HASH160 5f16f0e6baf867dbbede1b3d058554d299e48490 OP_EQUALP2SHOP_HASH160 f443d37c092736520f4d4cfc99de07b0e239923a OP_EQUALP2WPKH_V0OP_0 bc1c711c09aa9c97be86de87e0c55a5a284ee563P2WPKH_V0OP_0 3bc4fe50a1a876ccb6cd311f3421eaa8390a14eeP2PKHOP_DUP OP_HASH160 293b54cccc1bfe9361d09dc44dcd865e34614a21 OP_EQUALVERIFY OP_CHECKSIGP2SHOP_HASH160 2e19a874d3d7518772fd17cd67f50e761b81899e OP_EQUALP2SHOP_HASH160 18ed86ce6d92e09a87cdc927effca5a7d6be1a29 OP_EQUALP2WPKH_V0OP_0 f636db521294d5070ba30c4ff060fc095829daebP2SHOP_HASH160 158f6cb0b61bd4b74c59bb7233b20d89616731bb OP_EQUALP2SHOP_HASH160 6869ac5f114d29501294568569bba6872d5ae3f1 OP_EQUALP2PKHOP_DUP OP_HASH160 4546be966b26cf000ff379fdf0bd32a83c26398a OP_EQUALVERIFY OP_CHECKSIGP2SHOP_HASH160 5ad06042999c9bf2731bfe6f3b1d7b56bbad96ac OP_EQUALP2SHOP_HASH160 1f0cc0782a6b90eaebab654206b4a4be7efa8d16 OP_EQUALP2WPKH_V0OP_0 720dbe86608c063eaba10ba5cfd86b2b80e6c499P2PKHOP_DUP OP_HASH160 3d09ba6bfad5c09e9d616b73906ed24249bf47a6 OP_EQUALVERIFY OP_CHECKSIGP2SHOP_HASH160 6b977f437d3d5460dc8b0a49acbe4e071ce7ce24 OP_EQUALP2WPKH_V0OP_0 6f727af268c1b1a9734be79f82ddc807f587ee4dP2WPKH_V0OP_0 4af36808117984655bb98df4389194b5c50d7534P2SHOP_HASH160 16af91a92b94115a5affd4de3cdd073fd7ad6e51 OP_EQUALP2PKHOP_DUP OP_HASH160 bfc8cc84f28667641e63d73a5091015e9fd21708 OP_EQUALVERIFY OP_CHECKSIGP2WPKH_V0OP_0 8c4e92cbe273311e83feda3e108bea82b53d7460P2WPKH_V0OP_0 315b3cc670c25f50a218272e81557cdf3ed52049P2SHOP_HASH160 35856b9b7b55115e0d67eeb622b3a898127033de OP_EQUALP2WPKH_V0OP_0 dbab6e9f7c09c4813a3e0436948172bdcb52082aP2PKHOP_DUP OP_HASH160 8dd1eeb45dd7e487023e54b0629345d4bc40f3c4 OP_EQUALVERIFY OP_CHECKSIGP2SHOP_HASH160 2bbf01ea643099b9f9eeacb3dda1b1ab5b65277e OP_EQUALP2SHOP_HASH160 833882a2b111cac527ffc664c4de0ae2b946f584 OP_EQUALP2WPKH_V0OP_0 e94658a70ba9127044dc0e00a51b22550edcf209P2SHOP_HASH160 bef01ceb10758fef2fab4cb7b684e40c76f585d3 OP_EQUALP2PKHOP_DUP OP_HASH160 6b227e6dd1f22f4f61f48dbf2ff463c9a4e1c421 OP_EQUALVERIFY OP_CHECKSIGP2WPKH_V0OP_0 c64c57137986f607955f09765c711d33b65c9deeP2SHOP_HASH160 b8463f78b44cb26683b8160bb94afc84adcc2f5a OP_EQUALP2WSH_V0OP_0 dccb2202bebcec5993c3ff0891ce59e568b9b91a80240a0ddd2946bca72b38f7P2SHOP_HASH160 276a5b2a979cbfe8c7ae50a62274cbb19e8fde5b OP_EQUALP2PKHOP_DUP OP_HASH160 5ae5c060764e92b4881f5cd6ac525f517adbdd47 OP_EQUALVERIFY OP_CHECKSIGP2SHOP_HASH160 b4541d60efc7786c66a0ba94f83119619066183e OP_EQUALP2SHOP_HASH160 69914f390d363fc0ae66d1527c441d57407ac157 OP_EQUALP2SHOP_HASH160 fe6d1ef6c964a0b7677f52834947b42107cb358a OP_EQUALP2PKHOP_DUP OP_HASH160 14692509d87e432d141e06f0f5fb574e6178a305 OP_EQUALVERIFY OP_CHECKSIGP2SHOP_HASH160 29f573507a5cba8f2c9ca3968d44e72eb44edf0c OP_EQUALP2WPKH_V0OP_0 d8e050c8b603aa409aa9b6b01ef13a65835fbe2aP2PKHOP_DUP OP_HASH160 3986d49924386cf35ef639bf307ce30c0da10c2e OP_EQUALVERIFY OP_CHECKSIGP2SHOP_HASH160 52237c9ac0e4fe11b59712c203c4dd29a43aab67 OP_EQUALP2SHOP_HASH160 5f8b6b31fb611516a3dc08e82b51e3f96fbc4be8 OP_EQUALP2WPKH_V0OP_0 44c1e546f9eac3ea949dbd9bb44640305837cbbfP2SHOP_HASH160 c561c5bce9c7b468961e394918252120def3e7b5 OP_EQUALP2PKHOP_DUP OP_HASH160 3fa90d22fd255b6dd1059361959656bfc03ae655 OP_EQUALVERIFY OP_CHECKSIGP2WPKH_V0OP_0 c91c81b5c32c5d507d49bfb25fa90b8a1c05bf17P2PKHOP_DUP OP_HASH160 5734609465a88428cb378b9f19c43cc21a558275 OP_EQUALVERIFY OP_CHECKSIGP2SHOP_HASH160 a82cdab7197d80c8c06b38f3457859b31ae01e3f OP_EQUALP2SHOP_HASH160 f8bafc260d634bfe1222b93841caec3ab6ae56f5 OP_EQUALP2SHOP_HASH160 ada97479490eba8a1697abce9316fb587f397d51 OP_EQUALP2SHOP_HASH160 a3f9b052c3a0a8c5615faedbed7103d8425395e1 OP_EQUALP2SHOP_HASH160 80d8eb91d39c3e025b92ef0580b977dc00bfa892 OP_EQUALP2PKHOP_DUP OP_HASH160 1bc456ac2a8597acf2d3090dbeb2b7aae5c5d700 OP_EQUALVERIFY OP_CHECKSIGP2SHOP_HASH160 613d27fb15f767bce7e7c0732db30df171a2f757 OP_EQUALP2WPKH_V0OP_0 81a968799adccec61b46098aab454f8b48d64beaP2SHOP_HASH160 a9921739ddefbf775218271dce45a58c5d75e309 OP_EQUALP2SHOP_HASH160 cfe63e4b53e14d629484172190436dbfc83fb996 OP_EQUALP2WPKH_V0OP_0 401b83fefe481dc61946423454d2b6acc7c1bee0P2WPKH_V0OP_0 ecabd470126f9e942e152ee0ef5dceadb63ed15eP2SHOP_HASH160 988d0f3cfe8060675233c3f71f302f5b706f7791 OP_EQUALP2WPKH_V0OP_0 a261c08f10021bb820996672c013ca791253e409P2PKHOP_DUP OP_HASH160 ea5ec620b016b3fc2108fbadb313967ce7b0de6d OP_EQUALVERIFY OP_CHECKSIGP2WPKH_V0OP_0 c5bbe4467947a774f0490ab5ebf3214de7a30659P2PKHOP_DUP OP_HASH160 4af889ff6335d7dacf68088f3761c1fd57c3e36d OP_EQUALVERIFY OP_CHECKSIGP2SHOP_HASH160 62594bf95b648d468aa045420508c38be10dca1e OP_EQUALP2SHOP_HASH160 f73452f5b6334675fc956f4d69ce294c5c6e26d3 OP_EQUALP2WPKH_V0OP_0 22a78bbc282d0af9ae86c3eed240fc7fe5aeb97dP2WPKH_V0OP_0 0fed6b337f6b5885d70b98afad94b5f792ad21e2P2PKHOP_DUP OP_HASH160 bd407948dca8293641cae15c77f1b3e33dba1a96 OP_EQUALVERIFY OP_CHECKSIGP2WPKH_V0OP_0 82f307c81eed53385ad29b14093e41f02ff3f4f1P2WPKH_V0OP_0 127faf86a7489f071bedadece995261f5b26e38eP2WPKH_V0OP_0 1018384c839f64ede45eb7f5ac7f17a310001aceP2SHOP_HASH160 18376418a3cdb20560e4b531aa67881b1492f5fc OP_EQUALP2PKHOP_DUP OP_HASH160 13bf4b4a71a18c6b17952e4748017e112b69fbd2 OP_EQUALVERIFY OP_CHECKSIGP2SHOP_HASH160 1adc3800750978a24990b032162392e90750794a OP_EQUALP2WPKH_V0OP_0 0fec13ee9a29bd09f799863e29e0953ddeece464P2WPKH_V0OP_0 96e54a945aa2210a4a3df68ecd0263801e2c7744P2SHOP_HASH160 58d12a02a369b0cff4d0a5a62dc87dc4637ac0bf OP_EQUALP2SHOP_HASH160 44a0184ec6ecb56eab22619f5c8b85bbe21bad86 OP_EQUALP2SHOP_HASH160 129b903424955186ca9c9d5879d0291bcd34beee OP_EQUALP2PKHOP_DUP OP_HASH160 ba720f26bb154576c131ee1b68c66720b54a2120 OP_EQUALVERIFY OP_CHECKSIGP2PKHOP_DUP OP_HASH160 19a181a7fd9081ed5ff73414e28a6f5c83150211 OP_EQUALVERIFY OP_CHECKSIGP2WPKH_V0OP_0 b3d3dfdb3faa562514fbb56c6ce347f4c113307cP2SHOP_HASH160 90a32d68a147cb0991d96fbc4ae34e3836725f0c OP_EQUALP2WPKH_V0OP_0 75d6c5f1515be23167e66e40a044e08da24cfe92P2SHOP_HASH160 6c970c69831a876bd6a2fec7188962bc1de7c43b OP_EQUALP2WPKH_V0OP_0 418345681a98086b53bbf30e72e5de39f0b764bbP2WPKH_V0OP_0 1a64e2b9c933a3c262e82db5476f3382e91aec1fP2WPKH_V0OP_0 83a919badd378027a91d651e07242c223017b4d9P2PKHOP_DUP OP_HASH160 05a7c710d595cc05e85e9c192088b5213065abe3 OP_EQUALVERIFY OP_CHECKSIGP2SHOP_HASH160 b4de3eb7b589315b1975515ad173489e469f360f OP_EQUALP2SHOP_HASH160 64e1635f19e90cf17f217abe8b72df198a27e2b4 OP_EQUALP2PKHOP_DUP OP_HASH160 9531afacd22c7b0bca67a3f0326453d5a82a3596 OP_EQUALVERIFY OP_CHECKSIGP2WPKH_V0OP_0 bc3b2f16018de0210d76c0c1d947447fd64c3c2bP2SHOP_HASH160 4d3e3f29f29f1a2e8e2e5bcee9984bcd1f1f2735 OP_EQUALP2SHOP_HASH160 8e4e9e6c3c685f87f8578f0ff59f3f656a587b86 OP_EQUALP2PKHOP_DUP OP_HASH160 bc9251dd5f587f7c0803e317091262951d0dced1 OP_EQUALVERIFY OP_CHECKSIGP2WPKH_V0OP_0 c8f686eeb6dbb468d0f557c62158d69d8d7f1094P2SHOP_HASH160 eff05992d3296dde55a332225a631b1c33889e16 OP_EQUALP2PKHOP_DUP OP_HASH160 3ff4768198f75ba6bc6b1e124c3e4860b5746a3a OP_EQUALVERIFY OP_CHECKSIGP2SHOP_HASH160 53c4c53c89e41cda07e446cb7c5de3bb21ece260 OP_EQUALP2SHOP_HASH160 c8e56716169cbd1469f62dd3e67e0d033ea47045 OP_EQUALP2WSH_V0OP_0 cdd9cbfd9cf934748d723bcedcffeb2b57caaa135137c97781050b01920bc521P2SHOP_HASH160 d8a4629090e88c47b53ad3dd79520997b6250e46 OP_EQUALP2PKHOP_DUP OP_HASH160 a8e8847fb124438bd7b69a613103aee979fa0397 OP_EQUALVERIFY OP_CHECKSIGP2SHOP_HASH160 2116a45abf10208427ab1dbc22d382b56d4e0a4f OP_EQUALP2SHOP_HASH160 234398881e0a97ef5ad9ce2978696f33f5c0df44 OP_EQUALP2SHOP_HASH160 5c64db5b7c7da103be864eb64fa21b583e0b7587 OP_EQUALP2SHOP_HASH160 872334a6ac35299ce54f28e0dc65f7a72c779a2c OP_EQUALP2SHOP_HASH160 bd63bbfcb512c3e55f9269bc07f66ce8d2ffb08a OP_EQUALP2WPKH_V0OP_0 dc2e097a2ac87181b4b6198aac6e45cfcbdf5fa0