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 0xf1d04a529f0e1fb8bab6b7df8433393195539b985af12ba60f47804273dd0c24. 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/04cd368c-48c7-47d4-bb55-c47141befdf3.json and https://artists.proofprofile.net/proofs/artist/04cd368c-48c7-47d4-bb55-c47141befdf3.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 0x9b04ada423f300c2a0ac93147aa3da7023bba6d22d9aae5ca7c2d39d9722eb8a. Chain 2 (Bitcoin): anchored in block 958110 (2026-07-15T06:57:12Z), 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/NIKIT2202024.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x25d3adea25e0e917063fbc758592542daf9ff4e287aafe42b7a55d01f8d19230. Chain 2 (Bitcoin): anchored in block 958746 (2026-07-19T15:36:35Z), 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/NIKIT2202027.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x1c4c3aeadc4aa8c26635268a0f9db6b42a101722b40d67407028ba7dcd537010. 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/NIKIT2202034.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x2a8f0c8bd938fd1516d26570dec9ed9dde60b7adb0b33ff782f4409fbba50904. 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/NIKIT2202046.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x18b60ae8fe079b673ec3ee1eb5b3f0f6b56bfa83a28f8b213721812ff273b3df. Chain 2 (Bitcoin): anchored in block 958907 (2026-07-20T16:17:58Z), 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/NIKIT2202050.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xaf4f27a57d64af8701c9634d2bb5c7e691aeeef7495db2d7d95bbf70cd1f08fc. Chain 2 (Bitcoin): anchored in block 958749 (2026-07-19T15:48:23Z), 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/NIKIT2202058.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x1a23e0db4958bc4dd9ccd571dd9b91227ca1ad8b1dc327f39cd11d2abbd8a542. Chain 2 (Bitcoin): anchored in block 956856 (2026-07-06T01:25:57Z), 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/NIKIT2202065.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x944f15943749980935648a128f4908bf5e0a1b786b3387c21f851a45fb5a2fff. Chain 2 (Bitcoin): anchored in block 958286 (2026-07-16T12:43:37Z), 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/BRGRV0700098.
To Be or Not to Be / Everytime - Ao Vivo
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x0d282fb2e8fa7f8f892e03c348088909e993f39be5cd0f10280e9c810f446d5f. Chain 2 (Bitcoin): anchored in block 956375 (2026-07-02T16:51:38Z), 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/BRGRV0600986.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x66441831e81364bb4244346cea15a4418d98837f3f3c2400dc733a6290fac499. Chain 2 (Bitcoin): anchored in block 958316 (2026-07-16T19:42:29Z), 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/BRGRV0600990.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x2fcd87257a7147719d76da72249e1a076439d84d1ce19fb8091b015e26f83917. Chain 2 (Bitcoin): anchored in block 958520 (2026-07-18T08:19:09Z), 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/BRGRV0600991.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x89474b35086a30c6775020d1b93ebdb8f738550cb8b0ce0461299c61807b510f. Chain 2 (Bitcoin): anchored in block 958571 (2026-07-18T15:39:25Z), 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/BRGRV0600980.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xe026fb15317b677f61ace6d16ea646f4039d61bf395c449edeba22dd5dae7398. 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/BRGRV0600988.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x110db2c0da37ade914cd9b79e90441cf7d8df0de78770fbb47bfc1a4c8825c0e. Chain 2 (Bitcoin): anchored in block 958627 (2026-07-18T23:33:54Z), 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/BRGRV0600996.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xe4894031a3db5112afed744695a31d8652988c1340ae3d7e36e7a164cf4981e9. Chain 2 (Bitcoin): anchored in block 958430 (2026-07-17T15:33:28Z), 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/BRGRV0600985.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xb10f5f961a249c29e7f5c4f958a7e8dbbe7d25ba757a65c9b69814e787d8d845. Chain 2 (Bitcoin): anchored in block 958951 (2026-07-21T02:01:41Z), 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/BRGRV0600992.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x5c71766200cb5c7aa7404d486f425377b23c19717f5fdeccc9d7e3138779eda8. 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/BRGRV0601001.