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 0x6d89a69ae5c1c299b9c6874028baa158e7b6351df54b015f94405114a83039ef. Chain 2 (Bitcoin): anchored in block 953423 (2026-06-12T21:20:00Z). Bridge: the canonical record inside this Bitcoin proof contains the same CopyrightID. Verify: download https://artists.proofprofile.net/proofs/artist/da530c8d-81b3-4a66-891c-fa141dbd7d9b.json and https://artists.proofprofile.net/proofs/artist/da530c8d-81b3-4a66-891c-fa141dbd7d9b.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 0xa0f5d90d4a96e15e0446cb2bd75a929c751b7be503abbcf8ace3dc80a42ae639. Chain 2 (Bitcoin): anchored in block 958137 (2026-07-15T11:30:31Z), 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/BR9L21200002.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x9118fee445dae803d67c7368da603e30b3ed5803f0a563a7c1d8cdc032e99e2b. Chain 2 (Bitcoin): anchored in block 958176 (2026-07-15T20:05:20Z), 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/BR9L21200010.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x4045b4ef4d6bb5332f7a5067529af814b8ff087cff578ae0473ff7c931c1ba02. Chain 2 (Bitcoin): anchored in block 958543 (2026-07-18T11:58:44Z), 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/BR9L21200026.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x5440dc82d09bba83c281f097477efd604911f453cfca7083d731e15a38da870f. Chain 2 (Bitcoin): anchored in block 958319 (2026-07-16T23:12:28Z), 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/BR9L21200050.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x2f3e0e98fe73f5d3d21e351100beb03e234ad0e1be7c0e86a4596da0de1e5cc2. Chain 2 (Bitcoin): anchored in block 958716 (2026-07-19T10:15:55Z), 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/BR9L21600001.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xc9112e177d74faad7b334aca111d88cb13ec740a3b17591ed0eca7d686f0a871. 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/BR9L21600004.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xebd4bc3cb15f1d26978464ebaaaa1b50317e41e2c081af85e30eef0138695d1b. Chain 2 (Bitcoin): anchored in block 958945 (2026-07-21T02:19:32Z), 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/BR9L21600011.
Leo & Junior no Estúdio Showlivre (Ao Vivo)
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xe2d136fb5349ad620c206a12311baf6d08de75f71093c42e1e0583163879c9b0. Chain 2 (Bitcoin): anchored in block 958476 (2026-07-18T01:26:56Z), 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/BXTS22000062.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x2f94c24881f092a8c5b2a35b5019316c09a458777fe87251c92f9bd780860439. 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/BXTS22200005.
Pout Pourri: Você Virou Saudade / O Cheiro Dela - Ao Vivo
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x33ca7b4a473bbc5db83383ff1b1dd5224762124643d12e76e7444ed14ff13ce2. Chain 2 (Bitcoin): anchored in block 956728 (2026-07-05T01:43:49Z), 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/BXTS22200006.
Pout Pourri: Imploro / Tema Diferente (Ao Vivo)
Pout Pourri: Imploro / Tema Diferente - Ao Vivo
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x42dfdd9df5831e3aca586a2412fd29404387fbfbe72690b7e18716f35f1cd27a. Chain 2 (Bitcoin): anchored in block 958116 (2026-07-15T10:07:54Z), 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/BXTS22200020.
Pout Pourri: Por Toda a Vida / Pra Lá de Bagdá / Cigana (Ao Vivo)
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x03e4a29ee1928c84d98cfa4fb6cf9ced3bdcb6503e96fee050c293a034a851ee. 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/BXTS22200019.
Pout Pourri: Nos Bares da Cidade / Diga Que Ainda me Ama (ao Vivo)
Pout Pourri: Nos Bares da Cidade / Diga Que Ainda me Ama - ao Vivo
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x01760b6ee924b8b5954c7e8d1bef34788412d9dd95edbcc538cb7364598dfcb3. 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/BXTS22200065.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xb3e617f87fafe939832a4a0507a0fbc58244bbf794f98065ad9b3beaae5855fb. 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/BR03D2400411.