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 0xe51d24d62672d7a5212a7a3cf156f0b18204e19f3fc43c4780cde4beb02a408f. 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/90edd835-f7d1-4c1e-b428-8d750658b113.json and https://artists.proofprofile.net/proofs/artist/90edd835-f7d1-4c1e-b428-8d750658b113.ots, run `ots verify -f record.json proof.ots` (https://opentimestamps.org).
Cheiro de Shampoo / Amor Não É Jogo de Azar / Cadê Você? - Ao Vivo
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 0x17f874fc8148630ee86f0acb625330a7eb9aac0cc2efd84a488626369b5baa05. Chain 2 (Bitcoin): anchored in block 958832 (2026-07-20T05:43:55Z), 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/QZGLS2400675.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x7e4fc8a958c8d3657c4133593f56d42f6529389f3813c3df3fad55e567884fec. Chain 2 (Bitcoin): anchored in block 956745 (2026-07-05T05:33:35Z), 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/QZGLS2400680.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xc698f0c02f7c3a38b2c050af291056746ff8577514db59bfa85c2465e51d2cb5. Chain 2 (Bitcoin): anchored in block 958316 (2026-07-16T19:42:29Z), 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/QZMZ92451716.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x5df347135d99ad6847e860a1f8df0b584d7cfb7be6aa2af81979f9a00ab464ce. Chain 2 (Bitcoin): anchored in block 958137 (2026-07-15T09:47:57Z), 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/BK3OI2400001.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xb7730dfe34f32eff92f5ddb38ad839e4f6c7d88e5131442b21561024d02cdf3a. Chain 2 (Bitcoin): anchored in block 956826 (2026-07-05T19:27:56Z), 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/QZNJY2481712.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x204e21688fbe21fa6048943d2661ebaad3ea5cdde64b4a698a737c9eb5aaafb2. Chain 2 (Bitcoin): anchored in block 958300 (2026-07-16T16:14:30Z), 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/BKN2V2400103.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xe53e18d706c76dd273310ee35c8d1f89130e373fa9a4fdf29b4aafb6259262d7. Chain 2 (Bitcoin): anchored in block 958526 (2026-07-18T09:09:53Z), 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/BKN2V2500072.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x3eaf56c9c16472c1bb4f527830a9f0f64fe2e8ea1a8a4a2f853f4cfe6f9dd95e. Chain 2 (Bitcoin): anchored in block 958594 (2026-07-18T18:05:01Z), 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/BKN2V2500073.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x3cbb30d1e59471f534e34af008fe03450640dfac17e2b285e37a3429296d47ae. Chain 2 (Bitcoin): anchored in block 958857 (2026-07-20T09:45:25Z), 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/BKN2V2500074.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x9073c47b6d54570313f92a047a62caa6ea14fae25ec1ca1736c322b898111fba. 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/BKN2V2500075.