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 0x761161540beb90b08af31c92c5b30768cc7588c100ff5141ecefa80963044fc2. 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/09435d57-c1ad-44d1-a5e0-d72e00850b81.json and https://artists.proofprofile.net/proofs/artist/09435d57-c1ad-44d1-a5e0-d72e00850b81.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 0x5e6ee6f9510d9b50c6e6daefff31be0a4dfb0957810d0b2fbfcf0051bdaf92a3. Chain 2 (Bitcoin): anchored in block 956312 (2026-07-02T05:09:12Z), 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/BX65T2200006.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xd1fbefebe37e99a320997534120df0fdef878fa1dfbb933c128b76f975e7409b. 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/BXHAC2400089.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x1fc2029ad51bc3ac1676491227fe8843d52e917d28ecda6e45319984108ea42e. 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/BXHAC2400071.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x12a8215e85643cfc31e83c54c2373df3da74a59386b9670421b57ebff2bdf957. 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/BXHAC2300128.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xd1fbefebe37e99a320997534120df0fdef878fa1dfbb933c128b76f975e7409b. 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/BXHAC2400089.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xf41ccab219138a3367d08b193c7e5c7d5809d864edc5b826c75cd5a3a0fa1b92. 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/BXHAC2500004.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x8612bf6a9dcccb34e5bdd0601ab2139d4236dc8f4fef07093d16409310f11eaa. 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/BXHAC2500019.
SE EU FOSSE UMA GAROTA BRANCA (mas não sou)
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x1895fd45da3f094353a3a51954fc7fdd92752c422acbdaf7991d819e4c76364a. 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/BXHAC2500043.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x9f79b600a4b5ee81ee51717fbf6cafa79d44f5b6b8eb82ec97ca34dd1ff47c43. 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/BXHAC2500040.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x8612bf6a9dcccb34e5bdd0601ab2139d4236dc8f4fef07093d16409310f11eaa. Chain 2 (Bitcoin): anchored in block 956889 (2026-07-06T06:56:49Z), 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/BXHAC2500019.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x22ddb03ac85101402a6dc81464323a85a4cf43c8faffcb4ae86ffda6b2e3bfa9. 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/BXHAC2500037.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x8b579d35265bbce0fb6fb6d2c78cf0b9c8e9fbff65a649cbc1476d303a3807c8. Chain 2 (Bitcoin): anchored in block 958816 (2026-07-20T06:33:01Z), 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/QZNMW2525408.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x36d289c51142790e683e65aa7a5ef92524f0e01a40bcb6f0deee0e9247d7e782. 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/BX75Y2300115.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x4afe422969ab9e3dabf5585a3ecda99ab45d0e32b79e080b5d6ade9436b6f0c3. 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/BCE7P2400330.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x34986b0e771e6b717745d5449bcb44cdfd8b678b3ce8a0c1a253a36ae77ff418. 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/QZ5AB2465040.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x7e0a127381706cfbb865ab69e9ad4e4070a50a4d1c65061d272c5bf6e63a03c7. 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/BK0B52400004.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xaf7e954dab8cd2b2bdbcfe64a44747014da0eff6dd9bd3d3bb9fec931daa6ad1. 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/BX9ZT2300293.