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 0x8c583f4a77f1bed7069c2f31886027cc3446385b93312208676fbc1c71023834. Chain 2 (Bitcoin): anchored in block 953626 (2026-06-14T11:41:45Z). Bridge: the canonical record inside this Bitcoin proof contains the same CopyrightID. Verify: download https://artists.proofprofile.net/proofs/artist/2edfe0fa-72dd-4091-bf83-d20a99cf8ace.json and https://artists.proofprofile.net/proofs/artist/2edfe0fa-72dd-4091-bf83-d20a99cf8ace.ots, run `ots verify -f record.json proof.ots` (https://opentimestamps.org).
Brazilian Roots: Sertanejo Raiz, Vol. 16
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 0xea02d7f5794608b545724302119ff873d75474d6a943ef5c082b022bc7242570. 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/BRMVP0200906.
Brazilian Roots: Sertanejo Raiz, Vol. 15
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x8bcae16cd1bce52364356f2573d2d365bda13f7973534db63d0953c033d203c2. 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/BRMVP0500496.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x05285d2dc18a8f7f93d99be603ce513059a6223719807d9867e1d14ba702de3c. 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/BRMVP0200979.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xa1073f4b9c20871e76293b11fd5643e1acb871012b9f4a59805e97d973241c89. 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/BRMVP0500136.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x06379d19a3b9694a4b4abfc8afb0257586d747e62e643b8d4d5ddd9b1f4293e7. 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/BRMVP0500510.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x6f64e828b472ed7c1bc22b8af419396584e595fcf815e78b0ce2abe3fc7d9374. 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/BRBMG5600013.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x0c002433d390f719b8a978cf2b5477078831b13527be7de9f6ea3fcb66c83b60. 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/BRBMG7100176.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x77e3fdd29632d98d17a13f5f27f759e574c8fd896959d7ce9d18f0a878a21b23. 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/BRBMG5100007.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xbd365a014f6f642a6ae826a355161fbdb35f88a1169301bd97af2488520f7fea. 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/BRBMG6700036.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x1680b6c79fd456620afcf0773b711850a7921826731212a3b20992db0de8f1b4. 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/BRBMG6700067.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x5285aaa613455c79fa3c31db114c79f77cdbcf00cea9b7ebd035dc6a7653b68b. 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/BRBMG6800179.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x63f679580e9e2d01124e14f66a71072642a902228315a4de97b9c99d601263b4. 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/BRBMG7600211.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x77be7e055ca8d7d1a71216850d8443702881b80a91bc0e562bbf25e0fc037fac. 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/BRBMG6200115.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xf9af4dfc6f79b580d4765f828a3218004e4543186a1b47e81488563d5a0e4e6b. 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/BRBMG9101191.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x643c61209aebfb5574de2915b6258e59b64999fb85fd90a47b9671cbcb627499. 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/US7VG1475800.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x42142473dfcb85687148c10b724c4529fa0bb0366865dcc6a5200b7f8b79f482. 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/BRMVP0200151.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x2e00585bea90b318f060aae15ec100936d170c63f17891444bf783963bca87cd. 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/BRMVP0200152.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xdbf627f72b5669db21878499dab7d8fc39c409447efa504cff4208f6a754890f. 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/BRMVP0500708.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x625b11ecfe95dbb4bbc9ed59950819cd63aed83f9067eb491dbf529f9fe17538. 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/BRRRL0400070.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xdbb2f0cfdda02c2a8babb54463a646bd0ce5d21afe8631148050e2b2af6100b8. 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/BRRRL0400073.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x371f2b872c4e452242d434a1571f288f0db68d76ebe7a9738e761c4748ccd748. 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/NLRD52200157.
70 Anos de Melhor Música Sertaneja - Vol 02
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x9458bb9112935d6a4a5a753b855700d73ee61bdc9489237a9990f8e1a39fb19a. 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/BRWMB9800871.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x162553ba581011a37b0b6e9155821a9069b1aa272204c9d2c2f3f7c6c97d0def. 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/BRWMB9803673.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xdb68fb0cb20b6cd8d8acc256b8195a19eb9dc4840a19e12d95e5ff88a6889fd5. 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/BRSKY0501053.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xe092ce06058faff7c43240906561371f97e1c751a4aaa1f8d5b525add9e5fc22. 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/BRSKY0501059.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x253bcaa07c6518ef4c7b159fc5b41f603f3ee5a32a17095b82f8ba0cfc44eb0a. 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/BRSKY0501063.
Brazilian Roots: Sertanejo Raiz, Vol. 17
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x6bb1a6926394cb14b8c0999fa5b4ac17a49ecdc39c80d44bee4651cf2b4491a6. 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/BRMVP0500290.
A Fonte do Sucesso: 14 Sucessos Sertanejos, Vol. 1
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x73a03781ecbe09c5fac7716a837fb09fa8ff485df4db9d3435e9baeeadfed0c0. 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/BRIGE0400551.
Mais de Meio Século da Música Sertaneja: Vol. 1
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x0f1a77dea576afaffc4a4c3880d994b2a2d2832838faad9e01d2d631fb372641. Chain 2 (Bitcoin): anchored in block 959152 (2026-07-22T19:08:00Z), 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/BRIGE0500157.
Campeões Sertanejos: A Melhor Safra De Violeiros
Grandes Clássicos da Música Sertaneja, Vol. 2
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xb1aa54a0b04344aff1fff851435bc02666af055e9c71b26b119e123899345f66. 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/BRACP0300910.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x1b406a61487b67e8801ccec11a2f1f8db02c6c9bec46f349f969e66645b96ea0. 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/BRACP0300914.
A Fonte do Sucesso, 14 Sucessos Sertanejos, Vol. 2: Originais
Raízes Do Sertão, Vol. 3: Cancioneiro Eterno
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x3e67b52ab3c63568e970951ef2c520ace93f66c58703d5709612604148436e2b. 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/NL3M12408300.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xb01c165e397ac5bca0c59f8a2977ed8c79937ed6a77633a95cd0c6cdd7b60783. 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/NL3M12511421.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xc89f6684f6ed28d1675df93816da1c8f69912159d9d99b5351f6f78f89aca2e3. Chain 2 (Bitcoin): anchored in block 959163 (2026-07-22T20:50:29Z), 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/NL3M12416188.
22 Duplas Famosas: A Maior Safra Da Música Raiz (Copy)