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 0xc1ac5a2d9e1604b3e574e1490dbf78b7478bd0c0c830dc109ee5b20f0744be47. Chain 2 (Bitcoin): anchored in block 953808 (2026-06-15T16:45:15Z). Bridge: the canonical record inside this Bitcoin proof contains the same CopyrightID. Verify: download https://artists.proofprofile.net/proofs/artist/ef87f80b-024f-4de9-a5c4-5990b56ccecf.json and https://artists.proofprofile.net/proofs/artist/ef87f80b-024f-4de9-a5c4-5990b56ccecf.ots, run `ots verify -f record.json proof.ots` (https://opentimestamps.org).
Moleque Bom / Moro Lá / Roçado - Ao Vivo
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 0xf384f52dac40b48c95131e52ce94a32faa403dca031c57c1c30161de834e9df7. 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/BRD1E1900071.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x55ae74f7bbbe65617ad8f6a9889d678fd872ae012fb393c101782d0afb6938f2. 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/BRD1E1900087.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x1e4bce6d387bdcf0f1a87dc66b57270307a9d31284f871fc34a25b7f637a940e. 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/BRD1E1900089.
Renato da Rocinha 10 Anos (ao Vivo) - Deluxe
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xf384f52dac40b48c95131e52ce94a32faa403dca031c57c1c30161de834e9df7. 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/BRD1E1900071.
Quero Ouvir um Bom Samba - Ao Vivo | Bônus
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xf4a6f3256654af2ca86cfdce4d3224550c57db45223d91c5ca71c688cf7a1ce9. Chain 2 (Bitcoin): anchored in block 956302 (2026-07-02T03:30:09Z), 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/BRD1E1900074.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x718180daa6af32f247be5b81e005f369e03fe38fbbedf3f6a229e77a101b027b. 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/BRD1E1900084.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x55ae74f7bbbe65617ad8f6a9889d678fd872ae012fb393c101782d0afb6938f2. 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/BRD1E1900087.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x1e4bce6d387bdcf0f1a87dc66b57270307a9d31284f871fc34a25b7f637a940e. 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/BRD1E1900089.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xd3166e7ef89a5803b693eb11784647835caa5842d141c6a8801e0e31ffd90e6b. 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/BRIN31300010.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x3f1c533b6e3831f9ec004645927062bf8202d4982c9dff6564b93fec729ad68b. 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/BRIN32100021.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x3b85c1c8a7df12d81b0143905740518077ae221ac325721dec7ee4fbb8a24690. Chain 2 (Bitcoin): anchored in block 956302 (2026-07-02T03:30:09Z), 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/BRC831900045.
Samba Social Clube - Nova Geração, Vol. 2 (Ao Vivo)
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xb5f8f71aa62498c9cf360dcc10002e9e1a215347389217f5fbad2b1c3324eb94. Chain 2 (Bitcoin): anchored in block 956889 (2026-07-06T06:56:49Z), 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/BXQEE1800002.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x1d0caa380f1d350ba82de09dcfd0767becb1c2ec36304e1ef33a8466a06949b9. Chain 2 (Bitcoin): anchored in block 956889 (2026-07-06T06:56:49Z), 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/BXQEE1800003.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x405bd81e728aea61f963664343aeb91eaa7ebe9545919eb0826cde57cd76a8f6. 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/BXQEE1800006.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xaef686ff24471e48bd1486a38cd85de32c4e3ea6c5839e6b711684060d888b28. 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/BXQEE1800007.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x4bc254a39bba3293d526d0d837fa39fa6e051cc86b3ad94b03020652464667a9. Chain 2 (Bitcoin): anchored in block 956302 (2026-07-02T03:30:09Z), 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/BXQEE1800012.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x850da517182af7d1db4ef77fa5399ea8b76ac5afbde1a708cd8c404e8f216aad. Chain 2 (Bitcoin): anchored in block 956302 (2026-07-02T03:30:09Z), 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/BXQEE1800016.
Samba Pros Poetas / Ouvi Dizer - Ao Vivo
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x5b56569c24070d83b365b210d7136c95dbe69f9033be0c1b36810bde2f75d1bf. 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/BXQEE1800017.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xbc61d20bcb4f3402b12dc617cf91fa1fc789dc258c4d333237aa844da63950b8. 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/SR8W12000285.
Samba Social Clube - Nova Geração, Vol. 2, Pt. 2 (Ao Vivo)
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x67a2ddb3145b4010a83c7ece6bee7fe9081edb72d0e2999a2d95235b531e5dd3. Chain 2 (Bitcoin): anchored in block 956302 (2026-07-02T03:30:09Z), 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/BXQEE1800015.