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 0xcc9776d721e42a6e74b41ae5c989944c3d700f7adeaf48cd2297827b8670c5ba. 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/acb809b2-16ff-4249-ab3a-e376aef3d3e9.json and https://artists.proofprofile.net/proofs/artist/acb809b2-16ff-4249-ab3a-e376aef3d3e9.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 0x1a16d4ecf47b2fe5935d780c8864569c9c83761838029aa8db6947bb0f80cd49. 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/BXNT62207915.
Viola e Cavaco Sunset, 10 Anos (Ao Vivo)
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xc0b9951fc8ab0119d44f6250ae09e9bb003ba6d4c7369d55ff1b7f139d92e071. Chain 2 (Bitcoin): anchored in block 957120 (2026-07-08T03:22:41Z), 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/FRX762326117.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xcd900eb0949c43879ca8271a079934790ccf2a7dfb88756bcb5c8e05d56e089c. Chain 2 (Bitcoin): anchored in block 960144 (2026-07-29T21:09:47Z), 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/FRX762326118.
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 0x1084bd1fe77c3f76486b9f9cc3a38216bf1a616ccfa327cf31a4dc85630e100b. Chain 2 (Bitcoin): anchored in block 957124 (2026-07-08T03:53:27Z), 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/BRJMY1700013.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x4d65ef4fa3cb9343bf60641c6584505827a8a23cfb14f4f38d6c31c0ac0abb90. 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/BXNT62209474.
Cabaré da Recaída (Levaram Meus Cachorros)
Cabaré da Recaída - Levaram Meus Cachorros
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xb3fea6bc423f80e06b1866ba92e3796bef5cbca56c448c2f998678d5f564f771. 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/BXNT62209231.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x2c087666fc0953b4c925f74407175d3471f58177ff586c5030593372afa157c5. 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/BXNT62207491.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x2fbe8da8d854291fc8d992da9e9f25ebfa956bc0399445a5f2e072ca24662d03. 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/BXNT62206384.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x05044cfecb14e25d07765492f56172a8d5cfdf0ccd3055204f7eb01937536bc4. 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/BXNT62205171.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xfe7b26373041bed10e5b4a0a338489bc5ac0ad6ce877686c956e59f47f1e957a. 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/BXNT62204760.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xdd3d51e77ee33e8181290462fe1bbcfac6388b845f3e6c02853d43ca99d01b53. Chain 2 (Bitcoin): anchored in block 957120 (2026-07-08T03:22:41Z), 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/BXNT62203390.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x8e0cfbc3a6ed66e10d5d5d4163896938f147c5ddd055058e315ddbf18b9f9759. Chain 2 (Bitcoin): anchored in block 956891 (2026-07-06T07:16:32Z), 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/BXNT62202646.
Turma do Agro (feat. Bruno & Barretto, Marco Brasil Filho) [Quem É Agro Solta a Voz]
Turma do Agro (feat. Bruno & Barretto, Marco Brasil Filho) - Quem É Agro Solta a Voz
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xea4f2bb709acde363848bce879e380a6b0d95c763df34d0103b65e9607de01f1. 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/BXNT62100421.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xfeb736310215826965fd7bb97a49c7a6eac3a092511ee68eb35850628bcf9d25. 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/BXNT61903094.
Volto Não (feat. Léo & Raphael) [Del Rey Remix]
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x9f5a19e311e61c7c6c828661bd7b2729d0abbea5924b4a1b2219f745cf36fc80. 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/BXNT61902548.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xc32744315ab8c6ed5525fdfeacb702c685acd0862bbdbeae9c392811301ea0b5. Chain 2 (Bitcoin): anchored in block 957124 (2026-07-08T03:53:27Z), 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/BXTB11900103.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xa7b71a58343709bed2d39d9093cb657dbdcdf57d7e33b93c8613bcb91b21db87. 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/US7VG2579633.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xe430ef64d32b6f62844a0a69bc71fbe8f3c7aca0c36133b2005d273536d9aac5. 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/BXNT62401563.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x001d53ec73a3cd1da6e6f4a33c6909ce1881a07dac206ab52559b61f18177d63. 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/BXNT62401441.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xc4fc6957fff98b92f4cdf91ab5062d6446de29fcd65ec37c1219a7d230da5c90. Chain 2 (Bitcoin): anchored in block 956349 (2026-07-02T11:34:59Z), 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/BXNT62400830.