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 0xed54d0bf8b778630354a6592433ccb9e9225b9682c320543efaebc888586b578. Chain 2 (Bitcoin): anchored in block 953423 (2026-06-12T21:20:00Z). Bridge: the canonical record inside this Bitcoin proof contains the same CopyrightID. Verify: download https://artists.proofprofile.net/proofs/artist/dc7c339a-6947-4a16-b846-e465be444244.json and https://artists.proofprofile.net/proofs/artist/dc7c339a-6947-4a16-b846-e465be444244.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 0x57150507cce3cd4ea90a28c4989457f51aab4da2f6ca3a36a7efb63f3a4bd572. Chain 2 (Bitcoin): anchored in block 958563 (2026-07-18T14:29:03Z), 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/CA5KR1805846.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x89f4fffba2977ca81bdc90dc53f4658077fbb85dcccb614692058c2c642ad31b. Chain 2 (Bitcoin): anchored in block 956639 (2026-07-04T11:19:20Z), 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/CA5KR1903463.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xdc19783538b968479ba741904dd445897d8fa9faf4c025c160a22f82e0f25aed. Chain 2 (Bitcoin): anchored in block 958355 (2026-07-17T03:11:50Z), 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/CA5KR1903467.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x11817bf57feed2091b127929444fdddbf55da04268611c07e6721a253edcc640. Chain 2 (Bitcoin): anchored in block 956375 (2026-07-02T16:51:38Z), 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/CA5KR1936999.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xfd2a77af65f4eb294cf32a94ba8cdae2d88746b4260eca27c479eaa3d91c4b46. Chain 2 (Bitcoin): anchored in block 956375 (2026-07-02T16:51:38Z), 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/CA5KR1937007.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x531b1750d4086cfe3f28b94bf24020414243c9f32bd9e1312a8b3c7359257fbd. Chain 2 (Bitcoin): anchored in block 957061 (2026-07-07T16:07:00Z), 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/CA5KR2072276.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xe71d3fcd971d8ef768b2eda583c2907f9240247f4642783243a104f0f1603934. Chain 2 (Bitcoin): anchored in block 958714 (2026-07-19T09:51:44Z), 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/CA5KR2151048.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xc4671125d54a0dd0ae170b48572d456f1d17f1b3451b88e663c6960f2ae2575d. Chain 2 (Bitcoin): anchored in block 957872 (2026-07-13T15:39:45Z), 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/CA5KR2151052.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xc85a1cff606471decd7aab72b44ed0e88245169286c87e3d58fe29ec17c31802. Chain 2 (Bitcoin): anchored in block 958395 (2026-07-17T10:10:33Z), 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/CA5KR2151053.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x96d77d810a01b3855b49a4773d04e6d6fa351e04bc282f168ab5e9100678c4df. 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/CA5KR2151054.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xb38b182137a4b388af9423967d5898820f8c8330e51325a7c88169a4de0a3f3e. 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/CA5KR2151055.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xa87bb84411d3baa9aac0c7612a376ae4a2836a09413adefacb487db23ad6dccf. Chain 2 (Bitcoin): anchored in block 958355 (2026-07-17T03:11:50Z), 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/CA5KR2151058.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x3c5b2206ddee32c353884cbf8a88dffe0b8d71f41dc1443fc2e67c12cd166ce9. Chain 2 (Bitcoin): anchored in block 958621 (2026-07-18T22:59:44Z), 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/CA5KR2151060.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x1528a686c95ab011fbd04385fba48e4c5ae398e8a32ecd0e2e8025c9fc1860f8. Chain 2 (Bitcoin): anchored in block 958736 (2026-07-19T15:43:01Z), 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/CA5KR2251689.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x2b6ef939ee2b6b14f5a78b54ef671f4af28bcbc60d5a9efd78cf3168fdcef1e0. Chain 2 (Bitcoin): anchored in block 957882 (2026-07-13T16:48:10Z), 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/CA5KR2251691.
Corridos De Valientes De La Revolucion Mexicana