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
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x2f7dfaeaf5643ce940c63b49afc6a03c0a7e8fcb40e1bc562712609b53a9325d. 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/9b826aa5-a6d2-4ebe-9993-63286f8212a8.json and https://artists.proofprofile.net/proofs/artist/9b826aa5-a6d2-4ebe-9993-63286f8212a8.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
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x78e2d4b90a5be717f806cf693063f31fc61645ae445e640830be3e0c2d452b11. Chain 2 (Bitcoin): anchored in block 957145 (2026-07-08T08:56:20Z), 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/BK4442400004.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x83442d919974551e13c756488e1921c6b733df97b6e7e008f5cf20122d79621b. 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/BXG6R2400502.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x0de92b5a4efca6ace64ec24b621e9ef8e2f75d5825ca009550edcf3f08a7c42d. 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/BK4442300119.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xe1cbf5f539742b3e9c95932b01c5393d80040dc2cf52ae9d55c29bf769998791. 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/BK4442300123.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xda22e1f175d004ded1c92f93ee6402ca553fcce21dea53e429944faf973de613. 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/BK4442400142.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x2a81892e28271773f54f511d5fa7ce312c13aeffa1d424c8ac92e08c4193d05b. 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/BXG6R2400048.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x83946213aa2b68d06a58efd6e9151bfe49a6130cde8ebe6d4171f0f56d5f29fb. 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/BXG6R2400978.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x8a3f8a6c39c14adf6b8e895b5d6da774a63d45539ed11885fc6542897a6643ab. Chain 2 (Bitcoin): anchored in block 953528 (2026-06-13T15:41:10Z), 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/BC3PG2500354.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x48e273d539be8c05fc3b12ceb5eb516149896506794a433ea97ac3cbb9e9e76b. 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/BXG6R2500029.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xf5b17b421c434d821e96bc59665119ecfdac429073d0ef0a29a13c5ebb388ba7. 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/BKBSS2400840.
Baunilha (feat. MC Davi, MC IG & Mc Kadu)
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x73074bb18fc2073d1ba518ff1a436c26dfffe3a62b2fc4fc1925cdebeb4b1a99. 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/BK4DA2463694.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x43496093c403f7cc8322bc14a6538940bf03a4eee4f7085471e12e4d81ec3b93. 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/BXG6R2500005.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x430e3056fe3034fe13c8896b8de792306e3152f5ee5f3561183ece33adbc76f7. 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/BC3PG2500350.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x8a3f8a6c39c14adf6b8e895b5d6da774a63d45539ed11885fc6542897a6643ab. 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/BC3PG2500354.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xea9120839e632902c93065fde76931f21e2662070ec486b5ef7ae49222faed07. 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/BC3PG2404701.
Tropa Dos Manda Chuva (feat. MC Negão Original & MC Dena)
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x4c64ca738136c7a1f5ca5805ffcc6201dd9549fe0e0cbde85e5fe8f165a76ca1. Chain 2 (Bitcoin): anchored in block 953528 (2026-06-13T15:41:10Z), 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/BK4DA2458592.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x2d12fa86b4773bf3924a88988adefbd518727ff090f86a07a4ad053dbde45db5. Chain 2 (Bitcoin): anchored in block 953536 (2026-06-13T17:25:41Z), 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/BRWMB2500139.