thumb|upright=1.3|. A casta painting showing 16 racial groupings. Anonymous, 18th century, oil on canvas, 148×104 cm, , , Mexico () is a term which means "lineage" in Spanish and Portuguese and has
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 0x365322b1a864179b6dc96490d2ac519f8be7272f502c31b22b44ece27f9c144d. 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/2f89bea5-c750-4260-99de-03ac48fcc015.json and https://artists.proofprofile.net/proofs/artist/2f89bea5-c750-4260-99de-03ac48fcc015.ots, run `ots verify -f record.json proof.ots` (https://opentimestamps.org).
Para ti soy un amigo - 2015 Remastered Version
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 0xe661d02c35d3d74f7c097ba19a97b0e02cbc423ae8720395a86b4a255f7d8353. Chain 2 (Bitcoin): anchored in block 957899 (2026-07-13T19:36:39Z), 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/ES5151503524.
Te casaste sin amor - 2015 Remastered Version
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x86c7395581cc122ef8c999a99277bf463dbc402a2724cb214c182221a3a52ea8. Chain 2 (Bitcoin): anchored in block 957539 (2026-07-11T08:09:42Z), 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/ES5151503526.
La vida es para vivirla - 2015 Remastered Version
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x7bff3d8c92e3364dbe90b56f0472c5f51ff961a54467cdfb063fc05c92d85fcc. Chain 2 (Bitcoin): anchored in block 958242 (2026-07-16T07:38:03Z), 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/ES5151503527.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xbbcb9cacf5f921f6e145420ee13bfae87f14d4df0345b86a5c7f1c3ce802d0a0. Chain 2 (Bitcoin): anchored in block 958601 (2026-07-18T19:27:02Z), 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/ES5079100136.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x4103f33611c510631d5e2d93251ac5e9f4b35fa43707909b9e7c28bfb2fb1a7f. Chain 2 (Bitcoin): anchored in block 958857 (2026-07-20T12:10:20Z), 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/ES5079100131.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xfdcc9c7aeb8e0b78a07fdbb18032ebb7fa420f4fc5fa783714724f193717a058. Chain 2 (Bitcoin): anchored in block 958779 (2026-07-19T23:34:02Z), 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/ES5079200491.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x889c9f64bbcc102ca7a69f13544164724154c7388f27fefc0940c62c72dc93ea. 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/ES5079100163.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xc2cc6f0a783a462ab319d1639dd5081865a6a64c0a0fd0821651e374683b3ef1. 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/ES5079100172.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x93c0dcfd1ae4afc2b9d016ee12be365e0d7b722beb9f9391ad7f3e3ac222eb0a. Chain 2 (Bitcoin): anchored in block 957539 (2026-07-11T08:09:42Z), 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/ES5630700937.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xa9660ab2a4fd3295eb1f0a513f137ae2e735af5b4b316f3db3df93e470f73958. Chain 2 (Bitcoin): anchored in block 957539 (2026-07-11T08:09:42Z), 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/ES5630700938.
Tu eres la ruina mia y otros grandes exitos
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xf19ec1a6cb4df6371c009dcdf7ffbead71b14037cf70fb87c8d5f06996792dc0. 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/ES5088706579.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xb4c8335f45dd1b3823994610ef96ad95c1105b250bf8198784e54f114ea78360. 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/ES5088706587.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x0442a89383be24ced71dd2d8a8e74003bff2117585da6a7d69f7e9460cd5e119. Chain 2 (Bitcoin): anchored in block 957539 (2026-07-11T08:09:42Z), 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/ES5088706586.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x49e30e3072650ead465b2181f62d159ed368eae3c4e2fad5397d52c33a1dd966. 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/ES5088706592.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xc939a0b8ba1d9e774158d8ccfdcf7a93149a38479311998f4ba35a8e5a72b2bb. Chain 2 (Bitcoin): anchored in block 958579 (2026-07-18T16:26:17Z), 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/ES5088806575.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x92bc263a64e4ddda0a26ae81f5ddf6ad1dd4443135eade460bd989537c69edb8. Chain 2 (Bitcoin): anchored in block 953536 (2026-06-13T17:25:41Z), 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/ES5151401031.