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 0x0dc3e60b97603d70f5aeeb3a81be005586d2a59b97c111523675a2a226898085. 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/f3c6b7fd-5075-4da0-aae8-7beb0d097625.json and https://artists.proofprofile.net/proofs/artist/f3c6b7fd-5075-4da0-aae8-7beb0d097625.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 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 0xd5208a59f2a78045cc31c9bfb3b376ca897577ea2dc40accf94c290505130d9e. Chain 2 (Bitcoin): anchored in block 956578 (2026-07-04T02:23:20Z), 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/DEY471827055.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xf6fa2356360a5548adc2d823be002004e5fb714fc6187304054b1edcb4ddabcf. 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/BX6Y62300063.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xebbcf588d31069cf01ba96348c0ca71be658441a4aba3ce1b48ef992981d504e. 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/BX6Y62400004.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x9133f738c49d41c9f158031bae3a7da707c21b13b6f1971d575682d51a3d973b. Chain 2 (Bitcoin): anchored in block 957073 (2026-07-07T18:39:05Z), 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/BXUS62100007.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x0e643d2e4d9f829b9ea96d4b08f0a75fee20dfd7c3aadfa7d6aa12436007b53b. 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/BXUS62000008.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xd40ad5444ec1fbb11da5b6e30b7fb8d0fed78eb389f8887b27349238c33528bc. Chain 2 (Bitcoin): anchored in block 960264 (2026-07-30T14:36:16Z), 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/BXUS62000009.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x28ee7e0a29ef5017cd3907e54b3424406f9ef4d76cf5bc35653cd5fc3eec9f73. Chain 2 (Bitcoin): anchored in block 960321 (2026-07-30T22:27:30Z), 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/BXUS62000011.
EU VOU CONTAR PRA ELA (Acústico Brainstorm)
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x989c428ff2eab9470c68109d5dc45bfb5902fbbe3211f281e3af053ca3df0c1f. Chain 2 (Bitcoin): anchored in block 957050 (2026-07-07T14:41:13Z), 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/BXUS62000010.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xa53e2ada2e4104e881234e78083b0b5866a4c8622999f400fe01d84f3278d07b. 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/BXYVJ2100006.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xb6b3b080611cdbeec2ce4ea9fd9c016ae754417d8f4da6a3635adf05601b154a. Chain 2 (Bitcoin): anchored in block 960111 (2026-07-29T13:21:01Z), 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/BCKKP2400088.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x571848c1a55b2c8fbda7b6de6a219bc883cca3b4c1e80407ee7c510618164e19. 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/BXYVJ2000035.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x3dc336c63eda54ded2ad4a003c7a9e904addf4f6b2ebcf0b7f7ec0766d0c70ea. 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/BX6Y62400097.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x7692f5fb2a341737bdb52d2bf59439b2be8ce28e227ae839b04c717d99467337. 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/BX6Y62300029.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x972201f986358281436789d46c0559bb60540819d1368ae62ec3895cc8ca590e. 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/BX6Y62200009.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x4ed7af74a79d733cf430b107115a4dc677681bf5db2477ce47e22fbfa6dc0bfe. 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/BXYVJ2100028.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xb88da886261e0922ac98db6c8a3c008408ad747bdc280d821df9270519adecf6. 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/BXYVJ2000048.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x8f56c938b0a2ca3601538bfa4d6b2838be6c992c48742629049c83c57f22f3cd. 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/BXYVJ2000028.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x17b56a8f941580a4e2c63edfc72a0075002329c0cea78b151602b25621b3d9a7. 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/BXYVJ1900010.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xe6c8de59ad7360c554c86685eeb69b1d7105fb67b751c4d021d04179ddbc761f. 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/BRUK01900056.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x5f00ea31517a6654d5ef495470cc8016ae2765d5449a6b3c0f0bd9ef6728153a. 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/BRUK01800003.