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 0xa56f7632f52dc4b7a3f1cf60691ffce9f94bffef48467e59c886df67e214046b. 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/f16b6e31-3d31-4ba0-929b-ee97dd1dd55b.json and https://artists.proofprofile.net/proofs/artist/f16b6e31-3d31-4ba0-929b-ee97dd1dd55b.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 0xc5e310e6ad2dbd8f0231f6f4827884bb5b1f3a3de924bffe7cbf99d055f7f141. 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/BRSME0900420.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x0b9cfa4636caf565ffd824c6ebcec8e4d2c4f015a281e77c004995a5fefd2732. Chain 2 (Bitcoin): anchored in block 956474 (2026-07-03T08:56:35Z), 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/BRSME0900455.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x5c58c3455f9641e9ccca6f38d1a48fdd5a716fd0f4ce7be3a5dd72ac23deef52. Chain 2 (Bitcoin): anchored in block 958329 (2026-07-16T21:48:38Z), 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/BRSME0900428.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xe715ac74e30aefe5c758cdf372e591db690984b1b793f12740d21de55754ba20. Chain 2 (Bitcoin): anchored in block 956822 (2026-07-05T18:48:28Z), 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/BRSME0900421.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xb65fa2ace3e8bb3da3cd2224de3beda2c9747ed618e6e2d99d708a15e13348d6. Chain 2 (Bitcoin): anchored in block 958543 (2026-07-18T11:58:44Z), 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/BRSME0900425.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x0ada243a269d477f28d81ec1c4a617db60dff6821896b80a2a7f3edb77087dc3. Chain 2 (Bitcoin): anchored in block 958541 (2026-07-18T11:37:54Z), 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/BR8KN1400007.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xd068c45d062a0a7fba2f3da826a163079b95db589703ce2e0072093bc6de1b95. Chain 2 (Bitcoin): anchored in block 956545 (2026-07-03T19:59:51Z), 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/BR8KN1400006.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x51ca053596912e99a013352d88a54798796aa6c7600100bec028a7d64b096c48. 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/BR8KN1000442.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xb963d816bf2084c596a84f23fc40abefb19164c7e2e74221701fcb0afc4123c4. 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/BR8KN1400004.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x46a2b4da80757da96767964fffdf1735c8d73ab77a0a1f0af3a2c7c4cf29fbd6. Chain 2 (Bitcoin): anchored in block 958792 (2026-07-19T22:55:52Z), 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/BR8KN1400008.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xbd35e23c5c1fd0f74db976ebdedc3ff54b16e308f7be0f6d96d72c2e0e4f57ad. Chain 2 (Bitcoin): anchored in block 958058 (2026-07-14T20:20:34Z), 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/BR8KN1400018.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x2e490b177da5ba0b7d4b26f6466c3983161f6b46de3fbf1097265bae3bbb501c. Chain 2 (Bitcoin): anchored in block 959128 (2026-07-22T12:33:25Z), 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/BR8KN1400001.
Um barzinho, um violão sertanejo (Ao vivo)
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xb49e66f3177dd7175a89acd04a61f854accc47acf7c84805cac71ea646dc1571. 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/BRSME0900745.