Leuzemia is a Peruvian punk rock band. The name of the band is a misspelling of the Spanish word leucemia (meaning leukemia). History The band was formed in Lima, Peru in 1983 by Daniel F (guitar, vo
1. Compute SHA-256 of OTSCanonicalRecord value → must equal OTSHash 2. Open OTSProofURL → extract Bitcoin block number → must equal OTSBitcoinBlock 3. GET OTSBitcoinBlockVerifyURL → returns the Bitcoin block hash at height OTSBitcoinBlock; GET https://blockstream.info/api/block/{that hash} → its timestamp must match OTSTimestamp 4. Read CopyrightID inside OTSCanonicalRecord → must equal the CopyrightID above 5. GET OTSVerificationAPI → pre-computed 6-check result from server 6. If all match: this entity was registered on CopyrightChains at OTSTimestamp, independently verifiable on Bitcoin Note: an OTS proof may carry multiple Bitcoin attestations; OTSBitcoinBlock is the earliest confirmed one — a later attestation inside the proof corroborates it and is not a mismatch
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xf53f532c4f1573f6dd5b014474f9cf2ced035295afc56f998f23644d87f4e2dc. Chain 2 (Bitcoin): anchored in block 953407 (2026-06-12T19:24:56Z). Bridge: the canonical record inside this Bitcoin proof contains the same CopyrightID. Verify: download https://artists.proofprofile.net/proofs/artist/b6507f59-fd6c-4f17-bce5-3f4847ca674c.json and https://artists.proofprofile.net/proofs/artist/b6507f59-fd6c-4f17-bce5-3f4847ca674c.ots, run `ots verify -f record.json proof.ots` (https://opentimestamps.org).
1. Confirm isrcCode identifies the recording in the pre-2022 source corpus and cc-db-prod record 2. GET OTSVerificationAPI → server-side canonical-record, hash, and attestation checks must pass 3. GET OTSBitcoinBlockVerifyURL → returns the Bitcoin block hash at height OTSBitcoinBlock; GET https://blockstream.info/api/block/{that hash} → its timestamp must match OTSTimestamp 4. Confirm CopyrightID is the CopyrightChains transaction hash 5. If all match: the cc-db-prod record is independently anchored on Bitcoin at OTSTimestamp Note: an OTS proof may carry multiple Bitcoin attestations; OTSBitcoinBlock is the earliest confirmed one — a later attestation inside the proof corroborates it and is not a mismatch
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x50e040f54e4ff881a4f15f203cc496b7e315d50ee0672ba0ed992211c50dacf6. Chain 2 (Bitcoin): anchored in block 956420 (2026-07-03T00:42:11Z), registered by our registry partner. The server verifies the private canonical record against OTSHash without exposing internal provider keys. Confirm the public ISRC, CopyrightID, and Bitcoin evidence via https://artists.proofprofile.net/api/v1/bot/ots/verify/track/QZFZ22156742.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xcee44a61fee6e24065e6cd35b17e1269a85e408f89d5bb0f1b4458093dd08ceb. Chain 2 (Bitcoin): anchored in block 959073 (2026-07-21T23:25:37Z), registered by our registry partner. The server verifies the private canonical record against OTSHash without exposing internal provider keys. Confirm the public ISRC, CopyrightID, and Bitcoin evidence via https://artists.proofprofile.net/api/v1/bot/ots/verify/track/QZFZ22156748.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xe4699b5dbc52b4b3d261a117d632cad103c8e10ea5c9adb9eb74fd3b720ddeb0. Chain 2 (Bitcoin): anchored in block 956742 (2026-07-05T05:07:15Z), registered by our registry partner. The server verifies the private canonical record against OTSHash without exposing internal provider keys. Confirm the public ISRC, CopyrightID, and Bitcoin evidence via https://artists.proofprofile.net/api/v1/bot/ots/verify/track/QZFZ22156753.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x694b7640c4155eb8a6cf950e9810ce76df96b83420c36b87202e52828703926e. Chain 2 (Bitcoin): anchored in block 956826 (2026-07-05T19:27:56Z), registered by our registry partner. The server verifies the private canonical record against OTSHash without exposing internal provider keys. Confirm the public ISRC, CopyrightID, and Bitcoin evidence via https://artists.proofprofile.net/api/v1/bot/ots/verify/track/QZFZ22156754.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x24ab63ededd4a6d8cc6c6fc37377b4f0ae6f8d75ac3d80ee6a1df676028b96f6. Chain 2 (Bitcoin): anchored in block 957766 (2026-07-12T22:25:04Z), registered by our registry partner. The server verifies the private canonical record against OTSHash without exposing internal provider keys. Confirm the public ISRC, CopyrightID, and Bitcoin evidence via https://artists.proofprofile.net/api/v1/bot/ots/verify/track/QZFZ22156760.
Moxón, el Execrable Viaje Estokástiko de Defekón 1 a Través de los Tiempos
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x6f3def8d78a2d95cd3baf70f5fd45e25ab37c8d414d86fd33965627696b901c0. Chain 2 (Bitcoin): anchored in block 958959 (2026-07-21T03:51:22Z), registered by our registry partner. The server verifies the private canonical record against OTSHash without exposing internal provider keys. Confirm the public ISRC, CopyrightID, and Bitcoin evidence via https://artists.proofprofile.net/api/v1/bot/ots/verify/track/QM2PV1803493.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x4f3bc38a8ca5bd6ea968e211c449d1411064966170a5d0e7b068186e90c4c04c. Chain 2 (Bitcoin): anchored in block 958465 (2026-07-18T00:04:42Z), registered by our registry partner. The server verifies the private canonical record against OTSHash without exposing internal provider keys. Confirm the public ISRC, CopyrightID, and Bitcoin evidence via https://artists.proofprofile.net/api/v1/bot/ots/verify/track/QM2PV1803494.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x2b9acd8c8116dcbf79b416cbcf0e851d1feef28f8c07e98707939efdab94a3b3. Chain 2 (Bitcoin): anchored in block 956420 (2026-07-03T00:42:11Z), registered by our registry partner. The server verifies the private canonical record against OTSHash without exposing internal provider keys. Confirm the public ISRC, CopyrightID, and Bitcoin evidence via https://artists.proofprofile.net/api/v1/bot/ots/verify/track/QM2PV1803496.
Eddie y los Pajeros del Diván Japonés - El Héroe y Su Relación Con la Heroína
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x5ff1e4cc098afc79df3b6e841e11e73ca421b256635206458f7a1f0fd858cf5f. Chain 2 (Bitcoin): anchored in block 957770 (2026-07-12T23:17:00Z), registered by our registry partner. The server verifies the private canonical record against OTSHash without exposing internal provider keys. Confirm the public ISRC, CopyrightID, and Bitcoin evidence via https://artists.proofprofile.net/api/v1/bot/ots/verify/track/QM2PV1803500.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x7d6e20f7fb56316c8d9336a448d9ceae82ce4cb016d66485a10503f5317daf7b. Chain 2 (Bitcoin): anchored in block 957770 (2026-07-12T23:17:00Z), registered by our registry partner. The server verifies the private canonical record against OTSHash without exposing internal provider keys. Confirm the public ISRC, CopyrightID, and Bitcoin evidence via https://artists.proofprofile.net/api/v1/bot/ots/verify/track/QM2PV1803506.
Al Final de la Calle los sótanos de la angustia
20 años sobre un sueño 1983 - 2003 (Remasterizado)
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x5f4d7400b52a13b7c75ca1b5f0458da27458e4cd9b271d677547c402855c3bcc. Chain 2 (Bitcoin): anchored in block 956894 (2026-07-06T07:53:57Z), registered by our registry partner. The server verifies the private canonical record against OTSHash without exposing internal provider keys. Confirm the public ISRC, CopyrightID, and Bitcoin evidence via https://artists.proofprofile.net/api/v1/bot/ots/verify/track/USDY41770135.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x4675040ba7c516519e70d58a2721224db85488511e191302db025504da39b994. Chain 2 (Bitcoin): anchored in block 956772 (2026-07-05T10:01:46Z), registered by our registry partner. The server verifies the private canonical record against OTSHash without exposing internal provider keys. Confirm the public ISRC, CopyrightID, and Bitcoin evidence via https://artists.proofprofile.net/api/v1/bot/ots/verify/track/USDY41770140.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xedd94d897bbf1fd1deaa2fe57d2984b1e5a7fa2ac8067839d17d421bc1cee6b3. Chain 2 (Bitcoin): anchored in block 959069 (2026-07-21T22:32:59Z), registered by our registry partner. The server verifies the private canonical record against OTSHash without exposing internal provider keys. Confirm the public ISRC, CopyrightID, and Bitcoin evidence via https://artists.proofprofile.net/api/v1/bot/ots/verify/track/USDY41770141.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x114399ca3f93a5820ff0f074b8ab724b5634c7618761ab3df911d5866da7983a. Chain 2 (Bitcoin): anchored in block 958627 (2026-07-18T23:33:54Z), registered by our registry partner. The server verifies the private canonical record against OTSHash without exposing internal provider keys. Confirm the public ISRC, CopyrightID, and Bitcoin evidence via https://artists.proofprofile.net/api/v1/bot/ots/verify/track/USDY41770142.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xd24491b39ee4fa08773d50fbeea5796aade195493f202269a7840f6bc6330475. Chain 2 (Bitcoin): anchored in block 957851 (2026-07-13T11:26:33Z), registered by our registry partner. The server verifies the private canonical record against OTSHash without exposing internal provider keys. Confirm the public ISRC, CopyrightID, and Bitcoin evidence via https://artists.proofprofile.net/api/v1/bot/ots/verify/track/USDY41770145.
Moxón, el execrable viaje estokástiko de Defekón 1 a través de los tiempos
Hospicios, los últimos ciudadanos de la Séptima Casa de la Obscuridad
Hospicios, los Últimos Ciudadanos de la Séptima Casa de la Obscuridad
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xb1381b56996726dd70946dad7aac33091c3b85d42db52b08fefb3424406ec756. Chain 2 (Bitcoin): anchored in block 958905 (2026-07-20T16:14:34Z), registered by our registry partner. The server verifies the private canonical record against OTSHash without exposing internal provider keys. Confirm the public ISRC, CopyrightID, and Bitcoin evidence via https://artists.proofprofile.net/api/v1/bot/ots/verify/track/QZBRF1887190.
El Hombre Conflictuado Kon Sus Propios Designios
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xc9ab1a62f9e32413877c85c63c15b2e947f16f1a15c6cc4437f5afba004605dd. Chain 2 (Bitcoin): anchored in block 958567 (2026-07-18T15:22:40Z), registered by our registry partner. The server verifies the private canonical record against OTSHash without exposing internal provider keys. Confirm the public ISRC, CopyrightID, and Bitcoin evidence via https://artists.proofprofile.net/api/v1/bot/ots/verify/track/QZBRF1887191.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xe52a9d7af79ec1ca4e25db17ee0ff48d320db1eb089375ddc158add22a9d0af4. Chain 2 (Bitcoin): anchored in block 956474 (2026-07-03T08:56:35Z), registered by our registry partner. The server verifies the private canonical record against OTSHash without exposing internal provider keys. Confirm the public ISRC, CopyrightID, and Bitcoin evidence via https://artists.proofprofile.net/api/v1/bot/ots/verify/track/QZBRF1887192.
El Hombre Ke Conversaba Con la Luna - Parte 1
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x3efa2fa237498975d099d4b5893a3ef0ab8736fe5a52a4d9afad33ae628c19bf. Chain 2 (Bitcoin): anchored in block 956889 (2026-07-06T06:56:49Z), registered by our registry partner. The server verifies the private canonical record against OTSHash without exposing internal provider keys. Confirm the public ISRC, CopyrightID, and Bitcoin evidence via https://artists.proofprofile.net/api/v1/bot/ots/verify/track/QZBRF1887199.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x0de3b422db91a3aa5d1b748e8be0ae9296028d7fc83b806c395c4db5bbe191d9. Chain 2 (Bitcoin): anchored in block 958286 (2026-07-16T12:43:37Z), registered by our registry partner. The server verifies the private canonical record against OTSHash without exposing internal provider keys. Confirm the public ISRC, CopyrightID, and Bitcoin evidence via https://artists.proofprofile.net/api/v1/bot/ots/verify/track/QZBRF1855155.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x6af7258f2ce82baa71a2c961417a1f5702a5e75e36c3dc35126fea1c3921fd49. Chain 2 (Bitcoin): anchored in block 958761 (2026-07-19T17:49:48Z), registered by our registry partner. The server verifies the private canonical record against OTSHash without exposing internal provider keys. Confirm the public ISRC, CopyrightID, and Bitcoin evidence via https://artists.proofprofile.net/api/v1/bot/ots/verify/track/USHM21836023.
Sesión Acústica - El Ojo de las Nebulosas (En Vivo)
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x3bbbf2e6aaa4f29f79bfcf8ad5772ebeece4496f340a4265134e2faae583d09f. Chain 2 (Bitcoin): anchored in block 956634 (2026-07-04T10:04:33Z), registered by our registry partner. The server verifies the private canonical record against OTSHash without exposing internal provider keys. Confirm the public ISRC, CopyrightID, and Bitcoin evidence via https://artists.proofprofile.net/api/v1/bot/ots/verify/track/USHM21855667.
Moxón, El execrable viaje estokástiko de Defekon 1 a través de los tiempos
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x5bbb5768e1418a2e99cc36edca48192d7ed03ec895c3cb9fa7956d030f268ca8. Chain 2 (Bitcoin): anchored in block 958779 (2026-07-19T21:08:39Z), registered by our registry partner. The server verifies the private canonical record against OTSHash without exposing internal provider keys. Confirm the public ISRC, CopyrightID, and Bitcoin evidence via https://artists.proofprofile.net/api/v1/bot/ots/verify/track/QZBRF1862467.
Don Pedro Marmaja o Don Pedro Sonaja (Live)
Eddy y los Pajeros del Diván Japonés ⧸ el Héroe y Su Relación Con la Heroína (Live)
Las Mentiras del Emperador ⧸ Espécimen Sub-Urbano (En Vivo)
Un Camino Que Me Lleve Lejos de Mi Casa (En Vivo)
Proemikhon Kince Segundos de Gloria Isopofacto (En Vivo)
Reina de Madrugadas o de Malogradas (Live)
El Derrumbe de los Muros Ignominiosos (En Vivo)
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x00661f136547f7e3b9c7e90f19c45c37cb4f5b04617884ed217fe194711f30a4. Chain 2 (Bitcoin): anchored in block 958901 (2026-07-20T15:07:00Z), registered by our registry partner. The server verifies the private canonical record against OTSHash without exposing internal provider keys. Confirm the public ISRC, CopyrightID, and Bitcoin evidence via https://artists.proofprofile.net/api/v1/bot/ots/verify/track/QZNJV2539844.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x2a023e15e4bbae64ce845696cb24985cf2d8f39ece2f25800b2679763bd3bcc3. Chain 2 (Bitcoin): anchored in block 958635 (2026-07-19T00:58:42Z), registered by our registry partner. The server verifies the private canonical record against OTSHash without exposing internal provider keys. Confirm the public ISRC, CopyrightID, and Bitcoin evidence via https://artists.proofprofile.net/api/v1/bot/ots/verify/track/QZNJV2547387.
Las Mentiras del Emperador, Especimen Sub Urbano
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xe0cc780b8ccaa3b2f4bcef72d8073898ec9bb8683fa782b3ad64eb19fc3b2d62. Chain 2 (Bitcoin): anchored in block 958607 (2026-07-18T21:01:11Z), registered by our registry partner. The server verifies the private canonical record against OTSHash without exposing internal provider keys. Confirm the public ISRC, CopyrightID, and Bitcoin evidence via https://artists.proofprofile.net/api/v1/bot/ots/verify/track/QZNJV2547217.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x777ec75ee58681f30e9a523ee55d088f9d66f9f870be3c6e12a9338ed8538957. Chain 2 (Bitcoin): anchored in block 956725 (2026-07-05T01:12:41Z), registered by our registry partner. The server verifies the private canonical record against OTSHash without exposing internal provider keys. Confirm the public ISRC, CopyrightID, and Bitcoin evidence via https://artists.proofprofile.net/api/v1/bot/ots/verify/track/QZNJV2547390.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x6f6e92a7d9f485c267486fb3c10d6611534f8bdd631551f9bcd36f95bc5239bd. Chain 2 (Bitcoin): anchored in block 958761 (2026-07-19T17:49:48Z), registered by our registry partner. The server verifies the private canonical record against OTSHash without exposing internal provider keys. Confirm the public ISRC, CopyrightID, and Bitcoin evidence via https://artists.proofprofile.net/api/v1/bot/ots/verify/track/QZNJV2547215.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x0d3941197bd712fc6535eeff5222ba8cf69671f0ed60dc1aa744509f636108fc. Chain 2 (Bitcoin): anchored in block 958538 (2026-07-18T10:30:13Z), registered by our registry partner. The server verifies the private canonical record against OTSHash without exposing internal provider keys. Confirm the public ISRC, CopyrightID, and Bitcoin evidence via https://artists.proofprofile.net/api/v1/bot/ots/verify/track/QZNJV2547133.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x5d50afeb535e43a8d4e5d50161d29654aad99c544ceb2586b3dc610c96ca9bdb. Chain 2 (Bitcoin): anchored in block 958942 (2026-07-21T00:24:07Z), registered by our registry partner. The server verifies the private canonical record against OTSHash without exposing internal provider keys. Confirm the public ISRC, CopyrightID, and Bitcoin evidence via https://artists.proofprofile.net/api/v1/bot/ots/verify/track/QZNJV2539715.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xaf0b7cc9664a73516bd406472ec4b2033e6dee85c5b716e5efdf3229ed94f4fc. Chain 2 (Bitcoin): anchored in block 958935 (2026-07-20T22:08:19Z), registered by our registry partner. The server verifies the private canonical record against OTSHash without exposing internal provider keys. Confirm the public ISRC, CopyrightID, and Bitcoin evidence via https://artists.proofprofile.net/api/v1/bot/ots/verify/track/QZNJV2547078.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x6db8e85819d22e29b32be4ce532a23b1bd28129bf6ab7c19d452e19e3663986a. Chain 2 (Bitcoin): anchored in block 956725 (2026-07-05T01:12:41Z), registered by our registry partner. The server verifies the private canonical record against OTSHash without exposing internal provider keys. Confirm the public ISRC, CopyrightID, and Bitcoin evidence via https://artists.proofprofile.net/api/v1/bot/ots/verify/track/QZNJV2539770.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x428ebdc1195d426eed47278d9c341981ba7b28a1c0a94ea93f216e3b8b949ed1. Chain 2 (Bitcoin): anchored in block 956772 (2026-07-05T10:01:46Z), registered by our registry partner. The server verifies the private canonical record against OTSHash without exposing internal provider keys. Confirm the public ISRC, CopyrightID, and Bitcoin evidence via https://artists.proofprofile.net/api/v1/bot/ots/verify/track/QZNJY2596199.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xa6333c5c200c8f3b0f46d69f70ddd8006e21e5e0706429a088ca02cf470d7ee9. Chain 2 (Bitcoin): anchored in block 956776 (2026-07-05T10:59:37Z), registered by our registry partner. The server verifies the private canonical record against OTSHash without exposing internal provider keys. Confirm the public ISRC, CopyrightID, and Bitcoin evidence via https://artists.proofprofile.net/api/v1/bot/ots/verify/track/QZNJV2547228.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xdb67dfcb86a5756d0ee297e0f0e6a6c45234d607e77d7da9eefc758d3a424c97. Chain 2 (Bitcoin): anchored in block 958600 (2026-07-18T19:24:05Z), registered by our registry partner. The server verifies the private canonical record against OTSHash without exposing internal provider keys. Confirm the public ISRC, CopyrightID, and Bitcoin evidence via https://artists.proofprofile.net/api/v1/bot/ots/verify/track/QZNJV2539803.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xbff7ffc6998c8765ddbeb020e1b435f8ebb692d3ee13b8fed56b1b1a138aae0a. Chain 2 (Bitcoin): anchored in block 958935 (2026-07-20T22:08:19Z), registered by our registry partner. The server verifies the private canonical record against OTSHash without exposing internal provider keys. Confirm the public ISRC, CopyrightID, and Bitcoin evidence via https://artists.proofprofile.net/api/v1/bot/ots/verify/track/QZNJZ2503724.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x94f46bf2c901de3939d370a38ff4ed505f783e1891c952df1df177b46ed7da31. Chain 2 (Bitcoin): anchored in block 953528 (2026-06-13T15:41:10Z), registered by our registry partner. The server verifies the private canonical record against OTSHash without exposing internal provider keys. Confirm the public ISRC, CopyrightID, and Bitcoin evidence via https://artists.proofprofile.net/api/v1/bot/ots/verify/track/PEMG91388008.