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 0xf0f21a31ce7a7cc7a29e1292ef957fc7ad045b972898c7a9408ee540b511d991. 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/ab8f4a63-490f-426a-8686-ad7bc3014d1f.json and https://artists.proofprofile.net/proofs/artist/ab8f4a63-490f-426a-8686-ad7bc3014d1f.ots, run `ots verify -f record.json proof.ots` (https://opentimestamps.org).
Pitú pra Beber (feat. Caninana) [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 0xb99c1138582f64d9a7023fcfac40a7868e1e9ccd2d10ede7f65f01c9b9b31763. 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/BXE8W2300009.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x81a41be0a94fb1badbdbf6205ae792a0290fa6075368fe2f0bc68b05c2c12f4d. 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/BXE8W2400001.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x333312890190fdac015a17045f5a52bc6e0e8f02cd5cef2890f03d5f0735f8f5. Chain 2 (Bitcoin): anchored in block 956725 (2026-07-05T01:12:41Z), 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/BXE8W2300005.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x353314d49d4f1ed9656ba8db493b8319956d6e3f60cbe8df59b791ac0397ff26. Chain 2 (Bitcoin): anchored in block 958256 (2026-07-16T07:22:18Z), 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/BXE8W2400002.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x97ecbb44a5e3c1ea5f134d71114009aa07c8751f4bd221abf8172d38587f815c. 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/ILTON2405079.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x589588d3e7c5d35255ba017550acabefa143d06ef2a5f42f7f6b6a8505b014a4. Chain 2 (Bitcoin): anchored in block 958163 (2026-07-15T14:38:07Z), 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/BXE8W2400011.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x8525bd820ee7a303ee314bb15d7c0a71a00ed514af424074439bb516947c81af. Chain 2 (Bitcoin): anchored in block 958245 (2026-07-16T05:50:22Z), 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/BXE8W2500001.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x32e7db86898b8178f1f71507831dcbfeb7def795bcd9f11cac3ee55fe54e97cc. Chain 2 (Bitcoin): anchored in block 958194 (2026-07-15T20:32:27Z), 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/BXE8W2400010.
Irreverência / Agenda Rabiscada / Só Liguei pra Dizer que Te Amo - Ao Vivo
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x49128f49d18081d6baf3a95317427882eb7e5c230c5eee8224ffec173446a742. Chain 2 (Bitcoin): anchored in block 956545 (2026-07-03T19:59:51Z), 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/BXE8W2500002.
Baião de Dois / Cavalo Lampião - Ao Vivo
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xf11769c2c82088ad334fb6fc7ad7c50eaddca3ef1daed98e9c7785bab8f6eeb0. Chain 2 (Bitcoin): anchored in block 958194 (2026-07-15T20:32:27Z), 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/BXE8W2500004.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x61d9836821e54dbcc8ca25238381b7dae4a186d4ce1337defe1cbde331e65dc2. Chain 2 (Bitcoin): anchored in block 958246 (2026-07-16T05:55:09Z), 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/BXE8W2500007.
Jogado na Rua / Sem Esse Coração - Ao Vivo
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xd46aadc05bc3dad61f3c87cff2aea94e123b710b30f72d6f117021fe9829f5bb. Chain 2 (Bitcoin): anchored in block 958538 (2026-07-18T10:30:13Z), 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/BXE8W2500003.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x8e81c1a43c122f1a5e1ab07fba187f44038bf5a166d27a9904b3438fa9833649. Chain 2 (Bitcoin): anchored in block 956545 (2026-07-03T19:59:51Z), 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/BXE8W2500006.
Clarão da Lua / Jogado na Rua / Indefeso - Ao Vivo
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xeb9d201163a59473a6bdc516dd173347e661d59bae4fdba56712d5a1c5f8022e. Chain 2 (Bitcoin): anchored in block 956634 (2026-07-04T10:04:33Z), 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/BXE8W2500005.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x4fbc8c89e30bf0484e0d5d1dd3c4fb0e0f44b1301b6a656189bf361b2c94d9b4. 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/BC7IP2400009.