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 0x8d9d9df0e7c3208e190eca7a94278cb81831518c970fc31105fc1706caa93109. 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/81abd455-8e68-4500-8232-6125ac370c04.json and https://artists.proofprofile.net/proofs/artist/81abd455-8e68-4500-8232-6125ac370c04.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 0x0f1a974733be3461b799c63097c6ad7e73b0709edd6a1a0be4132db03d416497. 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/QZGLM1956264.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x207d02d11d67f6ea77ebacdbd4c6dc408db997ee739c9f65279bc3a78bfab89c. Chain 2 (Bitcoin): anchored in block 958448 (2026-07-17T19:49:21Z), 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/QZGLM1956267.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x9e75ee9bd3548e890c2fa54b32166c20755d10b4b1d899f711472f2800fe89c1. Chain 2 (Bitcoin): anchored in block 958798 (2026-07-20T02:27:40Z), 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/US7VG2003491.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x3913fe29057b0048a7b310835469019b238763dabcd4e3d03809c21b50abf036. 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/US7VG2003492.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x4ade02303809b8dd843df8e45c9ce234a4df512b7f6151b0d8b856e7a2fd57d3. Chain 2 (Bitcoin): anchored in block 958796 (2026-07-20T02:42:54Z), 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/QZHZ42003109.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x8a7a868c3f0b22a632883eb02016f89ae322d5e3e5441d34566193bea6c15e8f. 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/QZMZ92061297.
Quer Esquecer sua Ex Mulher Vem Pro Cabaré
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x038ade97b0d44906d17a371d3569709f355e53f981c8d5b0f7d832f3a474f6ca. 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/QZNJY2012211.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xabb207cf5a98a6ded2679d0df1c703e764ae3733fbdd8692c80062390f778561. Chain 2 (Bitcoin): anchored in block 956422 (2026-07-03T01:01:38Z), 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/QZNJZ2173943.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x2ce553fd777d8c456fdd589f799337f39bc99ffe07f0698f92d27549f5b03296. 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/BCUHR2100003.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x74ee6477832699fe9e2b6bebf4b36bfc92d7219e38f4356e00b8652b3bb1eb6b. Chain 2 (Bitcoin): anchored in block 958111 (2026-07-15T09:50:58Z), 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/BCUHR2200005.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x8d7d7e6b67bac293d7f45198e64909b6ab9af2b20d79f2d0d2c45d5654389665. Chain 2 (Bitcoin): anchored in block 958625 (2026-07-18T23:11:57Z), 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/BCUHR2200008.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x558010f4c136dd630572c668e5d20e6695384ac0f97ada096f435172182832a3. Chain 2 (Bitcoin): anchored in block 956422 (2026-07-03T01:01:38Z), 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/QZNJX2382695.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xc54420e23c67614f5eeb684ecaabcd0ce38b7c362134e41d86aed3e4a390ab93. Chain 2 (Bitcoin): anchored in block 958489 (2026-07-18T04:13:26Z), 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/BCUHR2300005.
Tem Cabaré Essa Noite? (É Claro Que Tem!)
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x90cef54faa1b9dd0f619e1dab1799aea3d4d60315e0fc887395b525844bb0cd1. Chain 2 (Bitcoin): anchored in block 958544 (2026-07-18T12:14:37Z), 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/BCUHR2300006.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xc2a4f420db53fea5c3c2631ed397ebccb64e4c6da7d0c19b3d21facbe2976708. Chain 2 (Bitcoin): anchored in block 958749 (2026-07-19T18:30:35Z), 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/BCUHR2300007.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x11bbe5d559adc1f92f7aa0a115072646d02029016ff066c467db65a9a3261cfa. 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/QZW9M2433266.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x343b87828a5ef619a5bb489c510179aa08d786599ea006a559fc0afeb2478e09. Chain 2 (Bitcoin): anchored in block 956312 (2026-07-02T05:09:12Z), 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/BRL1V2200083.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x5042ab029d8d32a9c0bd3422f898f8a6cc2bf6a9e4fc777d2c9347f3cd602adb. Chain 2 (Bitcoin): anchored in block 957120 (2026-07-08T03:22:41Z), 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/BCUHR2300004.