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 0x3d934d70b9fa6311f0ea0609a7f0713f8a41897a89df93218ef94f6bb2dfebed. 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/513a9590-3b1c-42a2-998b-ec36fefc81e0.json and https://artists.proofprofile.net/proofs/artist/513a9590-3b1c-42a2-998b-ec36fefc81e0.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 0x7d4839c2dc45603323b53241db0592c819f82f31f719bae98088b4b9e8599dd3. 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/BRTMU1300504.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xb52866d95a788ebd21184bb104c181142f268f49b310642f0849bb2c4035660b. 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/BRTMU1300506.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xc0dca51dddca4d13ab71e85c6f94ee7e7e1b677505aab0039e2b8c1530b7ee9b. 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/BRTMU1300507.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x81228c4dd5c0b9981c2629995213bcbd48f37dfdbd7da84019fe4814c838fed5. Chain 2 (Bitcoin): anchored in block 958234 (2026-07-16T03:46:09Z), 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/BRTMU1300513.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x087f2f31ae458583cedced112c7adc21a907f9bcb30a8d148f94448e9902ed28. Chain 2 (Bitcoin): anchored in block 958746 (2026-07-19T15:36:35Z), 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/BRTMU1300517.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x8c238ebbd96c36d0b0062f965de979c0ea351199163e3872fe5f09d3a793c0c4. Chain 2 (Bitcoin): anchored in block 958388 (2026-07-17T09:14:21Z), 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/BRTMU1300433.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xf25e1e4e1d81c71adab9796cd1dcc4099884f13051e8e2ba20b31771797c7ef3. 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/BRTMU1300434.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xd45ef41dbcc745f23418e6cb575a8578632d1345efe311b739305c842107388c. Chain 2 (Bitcoin): anchored in block 958654 (2026-07-19T03:55:30Z), 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/BRTMU1300435.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xad56868a5717ac5c6e44fab6310af6ad525aaa2084d0e2ad618e40acc157af5b. Chain 2 (Bitcoin): anchored in block 958436 (2026-07-17T16:42:22Z), 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/BRTMU1300436.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x1cf2fa6d3b47ea513c6154e3da5c1a20e0f55e86c956a8a5351e7d406732d04b. Chain 2 (Bitcoin): anchored in block 956656 (2026-07-04T14:03:39Z), 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/BRTMU1300439.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xd929dc8aef79d998642a4c20b6ba83dd80b243fff5d4aced9a26426b87a5b767. Chain 2 (Bitcoin): anchored in block 958924 (2026-07-20T21:44:47Z), 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/BRTMU1300440.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x871cace7ed7b8ac58b13209cbeed6ac4143f27195b6ac20214a1805a1dc34b70. Chain 2 (Bitcoin): anchored in block 958908 (2026-07-20T18:20:44Z), 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/BRTMU1300441.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x716cfe2a73ab93ea75b00a6cc75d7b040e48a31417e189dc6ace35e1973e5375. 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/NLRD52415535.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x99260cddb933805aae23609c69bfdbc1d49ae195e6a2b38de7a6f69041eb3b58. Chain 2 (Bitcoin): anchored in block 958137 (2026-07-15T12:04:20Z), 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/BRWMB9701123.
Triha Sonora Original: A Vaca Foi Pro Brejo
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x36800b444cfc52687a3cf078a409057c1991e68599446d6606659ed575a8d745. Chain 2 (Bitcoin): anchored in block 958650 (2026-07-19T03:36:41Z), 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/BRMVP0500274.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x6e9d69ae440866757c585a6bbdcd945b95efb2d59cd564bc3f97feb0a28212bc. 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/BRMVP0500275.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x4be32bab21f8714eecd9f315eac312433cc4416f2906fd09910e4d329dfd5ba6. 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/BRMVP0500276.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x6e53054ac1995d9e4787ed5f73f6643db330dcdd6c2a05e7c03856a64729e303. 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/BRMVP0500278.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x28c45ec38437b5c652ba7369f367708e6fd3d24b4877f6a2f76c20ad852824c8. 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/BRMVP0500283.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xbd59e53592039ad2118545e3cb8177ea02e77e110a43f21e4d11c8f4dfb20fa6. 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/BRMVP0300003.
A Saudade (Original Singles 1952 - 1960)
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xac673eb618444674be49668b913012d7a3f6634bf9f6908b325ebd60704eab43. Chain 2 (Bitcoin): anchored in block 956351 (2026-07-02T11:38:34Z), 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/BRWMB9804913.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xbd365a014f6f642a6ae826a355161fbdb35f88a1169301bd97af2488520f7fea. Chain 2 (Bitcoin): anchored in block 953513 (2026-06-13T12:47:07Z), 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/BRBMG6700036.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xbd365a014f6f642a6ae826a355161fbdb35f88a1169301bd97af2488520f7fea. Chain 2 (Bitcoin): anchored in block 956349 (2026-07-02T11:34:59Z), 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/BRBMG6700036.