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 Note: an OTS proof may carry multiple Bitcoin attestations; OTSBitcoinBlock is the earliest confirmed one — a later attestation inside the proof corroborates it and is not a mismatch
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xbd223e85ef595066825c2eb14bb36b72f7619c2811d134a2daea7a3e8e052472. 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/329c0848-4286-44c4-bbcd-1e42157acca4.json and https://artists.proofprofile.net/proofs/artist/329c0848-4286-44c4-bbcd-1e42157acca4.ots, run `ots verify -f record.json proof.ots` (https://opentimestamps.org).
Fico Assim Sem Você / Amores São Coisas da Vida / Dr e a Empregada
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 Note: an OTS proof may carry multiple Bitcoin attestations; OTSBitcoinBlock is the earliest confirmed one — a later attestation inside the proof corroborates it and is not a mismatch
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xb0ca116573dc046fbe88e9e147b729947f1a7e3a6e203e0c1c7ebabcb047df3a. Chain 2 (Bitcoin): anchored in block 956302 (2026-07-02T03:30:09Z), 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/GBRKQ2286135.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x9afad45c0578fd17bf0e452caa76af302275b5f474e45786ac3c2c125c30ec42. 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/BCVWU2300009.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xcefdd7c1a1e10de53675793ba19553fdb37d1b9c63965b7ba7d4e48a11050000. Chain 2 (Bitcoin): anchored in block 958977 (2026-07-21T06:27:23Z), 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/BCVWU2400004.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x4826b8a98004e8c3ee1724a537ef5e4398431e094776d6c685ac0826fa73c002. Chain 2 (Bitcoin): anchored in block 958703 (2026-07-19T08:36:12Z), 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/BCVWU2400015.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xcf173e258f17cd19ead4c0e5f34278ffe7e17fa1d76d66df83e27bf75dae50a3. Chain 2 (Bitcoin): anchored in block 958176 (2026-07-15T17:14:36Z), 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/NL8RL2433757.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xd90fe8defa5d378c728c5ed571c11ca3bf75254a7a30a1da2613754dd9a781e4. 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/BCVWU2400009.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xccb8774190342d8580bb1ac94884460840ea81894f2a3a494e020b1796a9045c. 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/BCVWU2400007.
Vale a Pena Ouvir de Novo - EP 2 (Ao Vivo)
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xa2d54e125401952a0368990371b4c01e20360c89de0cfc46de21d752f616fd2e. Chain 2 (Bitcoin): anchored in block 953520 (2026-06-13T13:32:09Z), 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/BCVWU2400025.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x3de8a432f3e9eeb927effe43916814e7efa9592428f8e421c619dcd86a90e62d. 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/BCVWU2400035.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xccb8774190342d8580bb1ac94884460840ea81894f2a3a494e020b1796a9045c. Chain 2 (Bitcoin): anchored in block 953520 (2026-06-13T13:32:09Z), 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/BCVWU2400007.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x7b5da0af97f4710c4aaa8a7ab0afd5ec119c9542c75f47e697bfecf606c6b33b. Chain 2 (Bitcoin): anchored in block 957118 (2026-07-08T03:20:19Z), 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/BCVWU2400029.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x575a126d00f7bcb9ce302e3eac53b623dbf22ee1e6dea8fe47bb64c8d268ca74. Chain 2 (Bitcoin): anchored in block 956302 (2026-07-02T03:30:09Z), 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/BCVWU2400031.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x93e09b278c22d4b54a9f7048424e64d1d62e628321bb70573e1008d0d7f8da19. Chain 2 (Bitcoin): anchored in block 960193 (2026-07-30T02:05:19Z), 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/BCVWU2400033.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x138e64eee247bc636c0d1fbb3d598372f0cd95c7c0ecc13a77729e6a0cfba1a7. Chain 2 (Bitcoin): anchored in block 960303 (2026-07-30T20:11:13Z), 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/BCVWU2400037.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x6c139698d7477c0a0f8d360395455b99f02e27919a5e8ba8e835affbfc4d3062. Chain 2 (Bitcoin): anchored in block 956304 (2026-07-02T03:55:08Z), 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/BCVWU2400027.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x3187a288cd4cf660fa87b058e11eeb607bdd53fa597da92bbacf1512a7bf7925. Chain 2 (Bitcoin): anchored in block 953515 (2026-06-13T12:53:06Z), 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/BKA7Y2400137.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x3187a288cd4cf660fa87b058e11eeb607bdd53fa597da92bbacf1512a7bf7925. Chain 2 (Bitcoin): anchored in block 956304 (2026-07-02T03:55:08Z), 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/BKA7Y2400137.