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 0x5c9b692f3ce98438f0919d5a35f325b23e7c788cf04a0ec27f85a45d7bb30eb7. Chain 2 (Bitcoin): anchored in block 953807 (2026-06-15T16:39:18Z). Bridge: the canonical record inside this Bitcoin proof contains the same CopyrightID. Verify: download https://artists.proofprofile.net/proofs/artist/efe1bb8e-c581-44b3-858a-39046aa248b0.json and https://artists.proofprofile.net/proofs/artist/efe1bb8e-c581-44b3-858a-39046aa248b0.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 0xfe586e3bdcc6cba52559acd28ec7f0f81cdb25929943c0ccc2d871b87174d7f8. Chain 2 (Bitcoin): anchored in block 956725 (2026-07-05T01:12:41Z), 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/QZEQU2059355.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x58f3a15a83673856910ad7750f5cfab5f36b9c0645bd9855de6c24fb2894af36. Chain 2 (Bitcoin): anchored in block 958436 (2026-07-17T16:42:22Z), 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/QZEQU2059356.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xab0f5255bb2b9d51e00fb46660b6170417e45d0a17694382ecf78280aa924c2d. Chain 2 (Bitcoin): anchored in block 958152 (2026-07-15T12:00:27Z), 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/QZEQU2059357.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xca7cbf9926b83a8ee058a4269671d444b90520c2ab786484e8a89d005f476b76. Chain 2 (Bitcoin): anchored in block 958194 (2026-07-15T20:32:27Z), 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/QZEQU2059358.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xcc1ac6aa4bea7a614d16ee74d0486ed3eb533b862ddfbdc27d6873e468e7606b. Chain 2 (Bitcoin): anchored in block 958447 (2026-07-17T19:47:19Z), 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/QZEQU2059359.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x46d491bdedccae162187a066db45e3d40d23bb32df138a3805e4d190ce562103. Chain 2 (Bitcoin): anchored in block 958436 (2026-07-17T16:42:22Z), 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/QZEQU2059371.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x0c172d26ed1e5b78acc1c7e526c7d70961904af20dbac9b4e1c449244912d4aa. Chain 2 (Bitcoin): anchored in block 958234 (2026-07-16T03:46:09Z), 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/QZEQU2059372.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x95035a1fb94021466c5baf2637aa60529baa0ade820ac7f65992c9523e5e0250. Chain 2 (Bitcoin): anchored in block 956422 (2026-07-03T01:01:38Z), 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/QZEQU2059374.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x1d0367921a1d35937677296ffecf9694fbe56598eb7f41b87816b5a137f1963b. 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/QZEQU2059376.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xa877f838c1817374e3028b5d49326adead3145d8490193cb07ccf0d76d7df7d7. Chain 2 (Bitcoin): anchored in block 958234 (2026-07-16T03:46:09Z), 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/QZEQU2059378.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x779166391f4e73c5f457a58ba78f463ed404aaa605578f0b432c394b48131bfc. Chain 2 (Bitcoin): anchored in block 956725 (2026-07-05T01:12:41Z), 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/QZEQU2059382.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x775f0248b7e87836bd5911c580b711bb4bd052e95a0a04e46290a2f6ec813336. Chain 2 (Bitcoin): anchored in block 958544 (2026-07-18T12:14:37Z), 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/QZEQU2059383.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xe512eadf9829bfc0091155faf29bfbfd15a7b9a13a977db456701f45dc5ca393. 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/QZEQU2059385.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x249276d5d50621bc8773f728587a49f2a4f076e32d46e9298dc3503bf69f19ab. Chain 2 (Bitcoin): anchored in block 956725 (2026-07-05T01:12:41Z), 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/QZEQU2115514.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x8d67cbc44c44a7da9b7bd1561168a32219d159843e7c1b0c35543eb1a0a53780. Chain 2 (Bitcoin): anchored in block 958903 (2026-07-20T15:22:45Z), 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/QZEQU2115520.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x5c020e74004c900f9c11a9b3a19bec3b17fde30c5c0ae90117f328e9cc1f4a3f. Chain 2 (Bitcoin): anchored in block 958805 (2026-07-20T02:22:58Z), 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/ES39F2500168.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x709a8566561f70611448eaca9791a8c79fc66c0469e4757961523f38c7bb40bd. 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/ES39F2500169.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x966f215bf121d1354b20c2b723afe1f5365057112319e60d445360c10adf5d25. Chain 2 (Bitcoin): anchored in block 958903 (2026-07-20T15:22:45Z), 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/ES39F2500170.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xb1bcc809cf2eb5667a890b9d8f3c61633f4b7d8c40edc35274781064fb0be818. Chain 2 (Bitcoin): anchored in block 959163 (2026-07-22T18:47:29Z), 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/ES39F2500171.
Olha pra Mim Com Participação de Binho Viagens
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x33aec85ab69d5506316478f9ae3955fe7d14aac375737e054abebf864d81e70b. Chain 2 (Bitcoin): anchored in block 959159 (2026-07-22T17:48:40Z), 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/ES39F2500172.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xce7a98e87a26f55b9269fbd74ba0eaad9e313f4ec23bb26b190961e5f27e093a. 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/ES39F2500173.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x9a59c42d945a8ce5c906bd1ebb6deb4f1b8bc60622d3431456479479b16dd202. Chain 2 (Bitcoin): anchored in block 959144 (2026-07-22T15:38:35Z), 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/ES39F2500174.