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 0x1a1b992ee5f58529c46dab7a45126f7eac66a86c425491695d72d18bd330d46c. 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/7bffabd0-2967-4f37-85c3-516322ef202b.json and https://artists.proofprofile.net/proofs/artist/7bffabd0-2967-4f37-85c3-516322ef202b.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 0xcbbea546ef798a9ef867682a5989b698d196e210dc77ed83858b7d0132486f8b. 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/QZN882535979.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x1432b5bc8a4da403a2a374089538dc27d073f276e980fc9824e2d0d3648dcadc. Chain 2 (Bitcoin): anchored in block 958115 (2026-07-15T07:27:09Z), 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/QZN882536320.
NOVINHO SE PREPARA EU VOU ENTRAR NA SUA ONDA
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x7d6e785c0418b26ad21edc479f8d2852c4f6d02fdb41a5e44f55428ab5e05719. Chain 2 (Bitcoin): anchored in block 958838 (2026-07-20T07:01:21Z), 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/QZN882536309.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x8f8a0edc70b75b1137e3a9177bd2e5e603172eac5ecd07c84258736545c70ef1. 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/QZN882546293.
AS NOVINHA DO COMPLEXO SENTA NA PICA DOS CRIA
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xf08c01bc47e1e80018eae498fe6d98a41c6af4b33703a5e89669abeb0e2f1ecd. Chain 2 (Bitcoin): anchored in block 959008 (2026-07-21T13:14:05Z), 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/QZN882546305.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x5b7cb5ddd0274c5c136734c3b489849ea66d2cc71529e803e3c8c08bba5d5593. 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/QZN882551488.
AQUECIMENTO EMBRAZADÃO NO BAILE DO JACA 2
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x404bbdf4f90d0dd08282d91dac24bf85e77a23ddc085f24a8153ea77b1f5e3b9. 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/QZN882552300.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x3952e1d07bc8c1c6396512c4657c3f4af7cca4cda99747afa1a13c2661a98e9e. Chain 2 (Bitcoin): anchored in block 958489 (2026-07-18T04:13:26Z), 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/QZN882552483.
AS PIRANHA DA BRASILIA VAI FAZENDO A POSIÇÃO
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x8add456f29f5ff579f44e8e4abc8899502d7218e350f9dd45ef0b17779af169e. Chain 2 (Bitcoin): anchored in block 957863 (2026-07-13T14:41:15Z), 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/QZN882556727.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x7ba35ad579a186116b2e73cc040b90c8e57bf169420889b845092f7d79e90068. 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/QZNJW2577890.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xa11006651cb79dad89b567c93dbb6748f932c9b4a3bc38a6af3f0519f91f46ed. 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/QZNJY2578299.