Descartes a Kant is a Mexican rock group from Guadalajara, Jalisco. Formed in 2001,... it is characterized by its musical style blending different musical rhythms and its performances.. History Found
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
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xaf9ec21f23d401e7efefd393fea546bdf9838088bfbd116bda179f2d7fced6c5. Chain 2 (Bitcoin): anchored in block 953408 (2026-06-12T19:28:13Z). Bridge: the canonical record inside this Bitcoin proof contains the same CopyrightID. Verify: download https://artists.proofprofile.net/proofs/artist/b5d3aced-520e-40cd-b0b9-3d2a4760fcec.json and https://artists.proofprofile.net/proofs/artist/b5d3aced-520e-40cd-b0b9-3d2a4760fcec.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
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xda18b3f3b5c01f82b3c23d312fbaa30e0d768abc17ce20591ca31cf6180dbcef. Chain 2 (Bitcoin): anchored in block 958152 (2026-07-15T13:52:59Z), 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/MX3450600065.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x8ea7833e0b86769c444bae7daf3960803bc63a742b79f7c6a8bc1f0204d1c993. Chain 2 (Bitcoin): anchored in block 958473 (2026-07-18T00:52:36Z), 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/MX3450600066.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xbc96117ffb2d5ed93f846d5cfb85b0e8fb9db508731b4ccd94c4dc27aa55ccbe. Chain 2 (Bitcoin): anchored in block 958543 (2026-07-18T11:58:44Z), 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/MX3450600068.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x79ab28479b5a29c938d9cedab4d1ff820767601be58adddd27d3685a7e2d2e2c. Chain 2 (Bitcoin): anchored in block 958316 (2026-07-16T19:42:29Z), 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/MX3450600071.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xcc71057b99173ddac72fc74010455626b91568e7eb683434ea0173d2f359fe6e. Chain 2 (Bitcoin): anchored in block 956856 (2026-07-06T01:25:57Z), 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/MX3450600072.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x430b2a19868a750e2f966c106236c94f250359dd6c92c1418eeb4ecc30da637a. Chain 2 (Bitcoin): anchored in block 959031 (2026-07-21T18:44:27Z), 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/MX3450600074.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x592c8e882c0a11f1f190c0694f35fc660bb086e4c21dcfe2842e35e4716331c5. 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/MX3451200068.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xbb19927e026799197908eb3c12c4f7acec6ba8277b833ad30f3339b91f8f48ab. 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/MX3451200069.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xd0ef9f96f6402150f7f353af8b9fcc1444386994e4d5750ffdd7149a6552068c. Chain 2 (Bitcoin): anchored in block 958153 (2026-07-15T14:07:26Z), 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/MX3451200070.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x9f03c88acf873722550fe8c5fdb3f1aa41d37157030763b8b73b940262bdea9d. 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/MX3451200072.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x2c98dd5ae4fee29499566822b82ab01050df1cae4a53062804dbecf7a3fba4ca. Chain 2 (Bitcoin): anchored in block 958587 (2026-07-18T17:06:26Z), 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/QM6XS1703865.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x5b61c7c4f4fe52211949f899466ae6c89e024b8841e78010356b307e80a6731c. Chain 2 (Bitcoin): anchored in block 958335 (2026-07-17T00:54:19Z), 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/QM6XS1703866.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x8d5b5bf86e3c4e2616afb1f721ed8270e17535e5f0ff0ee0f335d2d8225d313e. Chain 2 (Bitcoin): anchored in block 958444 (2026-07-17T19:12:23Z), 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/QM6XS1703867.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x5e2bef1f1494ccdcdd534661e1955c9bf7f0c2cd38e915e715d5014240c2d42b. Chain 2 (Bitcoin): anchored in block 956728 (2026-07-05T01:43:49Z), 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/QM6XS1703868.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xf626780928de58ea52aceb9bbaabb93bac885ec084f7da82c5dfeeb37767e14a. 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/QM6XS1703869.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xce740a5a11bcc708d8df2d60b4e20bd7a5a6b3c8d6f5a8db2bd657c608687f95. Chain 2 (Bitcoin): anchored in block 956560 (2026-07-03T23:28:02Z), 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/QM6XS1703870.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xd16405fa91f12ef2f2ed9e769017629f804eb4e06a2eaa17df8342c2cb8396f0. 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/QM6XS1703873.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xef6f93e5260f829c51d3a09e3b6c21ab1776e91bc5e2d0a943a3de59e1a1d2f9. Chain 2 (Bitcoin): anchored in block 958357 (2026-07-17T03:33:42Z), 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/QM6XS2302031.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xf304ff73be302da25fde1b5c12ea024369517d31872d4c5e77d7ed743367e0b5. Chain 2 (Bitcoin): anchored in block 957546 (2026-07-11T09:35:53Z), 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/QM6XS2302030.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xee573473684c967dbc9d43fbd2bc1d69c453cb9f85a75ab06c5ff4fbc4109a00. Chain 2 (Bitcoin): anchored in block 957536 (2026-07-11T07:16:23Z), 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/QM6XS2302032.