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 0x3ff88ef37eb20b7d2967b68b12b3d0054ab807224157436c67afed9d0faafde2. Chain 2 (Bitcoin): anchored in block 954667 (2026-06-21T07:29:20Z). Bridge: the canonical record inside this Bitcoin proof contains the same CopyrightID. Verify: download https://artists.proofprofile.net/proofs/artist/c36780fb-ab1a-4cc3-8301-9bb146129ca8.json and https://artists.proofprofile.net/proofs/artist/c36780fb-ab1a-4cc3-8301-9bb146129ca8.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 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 0x69ea50558a1bccecfed110f4492731cba8b943c46cff9c31929b3a7cc51ede33. 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/BRI7L0700001.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xaf3340fe33c735a17e8b7ab7a4d9baf32e87c3b824c9ca601acca3c751c2e2cf. Chain 2 (Bitcoin): anchored in block 960291 (2026-07-30T18:23:33Z), 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/BRI7L0700002.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x6d77277774f426f57b4f587ba098e00fc4f2908d89db62b76c78ff09916807fd. 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/BRI7L0700003.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xd1501e582e6282f76c02f0075d24a4eee3b5e5ad84057078df4cf6ba21d3f2b4. 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/BRI7L0700004.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x044e1884d8c6585dd81a6b1549ca00782e582e4796d3b26b796a914ff769fb5d. Chain 2 (Bitcoin): anchored in block 960327 (2026-07-31T00:26:26Z), 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/BRI7L0700005.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x0ba830806bf0fa482a4deeda4a99dd3fe36855a91f8f64f636a6b6c7a9c3f57e. Chain 2 (Bitcoin): anchored in block 960264 (2026-07-30T14:36:16Z), 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/BRI7L0700007.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xcd1b390bc287b878d7cc8f04a48e9a93a65476f02b1325c95f967c5c97babc26. Chain 2 (Bitcoin): anchored in block 960334 (2026-07-31T02:19:15Z), 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/BRI7L0700006.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x87e82765d983026324162bfb2c61ef18d827428efcc735c285b4ddfa75a67d0a. Chain 2 (Bitcoin): anchored in block 960334 (2026-07-31T02:19:15Z), 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/BRI7L0700008.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xb891b3176b15aa528bfaabc514ba3d3f7164da8104fd50eb6586a8109c8baa05. Chain 2 (Bitcoin): anchored in block 960418 (2026-07-31T15:20:15Z), 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/BRI7L0700009.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xb4d8e509fd85ce3946d1afcfea977662b450dce66724c328d19bc4d66d794fe8. Chain 2 (Bitcoin): anchored in block 960473 (2026-07-31T22:27:44Z), 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/BRI7L0700011.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x851929ee26e12f28007dc537c3a27f95fa2ce916e71194ef826ed70783f007a9. Chain 2 (Bitcoin): anchored in block 960441 (2026-07-31T17:29:52Z), 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/BRI7L0700012.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x59a363b7807d2179865c99785c8f333474e37c265e1696979b8b3bcd5544c453. Chain 2 (Bitcoin): anchored in block 960397 (2026-07-31T12:24:41Z), 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/BRI7L0700013.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xab202108ea55faddaff9ee49c07b9d2b6e1377f153b636047cd9f6b0ca2f0f55. Chain 2 (Bitcoin): anchored in block 960455 (2026-07-31T19:53:13Z), 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/BRI7L0700014.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x07fcc0c5e690ca1595251428a88859d0bf13a17e03897d360545f2cbcba47ae0. 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/BXHLZ1800002.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xd066404af9d00ddba32647b9a8b5b3aba7368242edc6db6fcf277445c705f169. 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/BXHLZ1800005.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x48381b0c79e6b5df7dc45e61b4a70fe23e57f0cccc8ff90c3b82bbc36789db5e. 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/BRSEP2000003.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x2ec9fab0ddcab12a7d4fd560412fb2c8bd00c0eedb28123e0d3c1266dbffbb7a. Chain 2 (Bitcoin): anchored in block 960138 (2026-07-29T19:35:34Z), 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/BRTRB2087100.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x1bec2a638986841253087ba86f474ea65075292cba4ce62d7bd3188dde7c3deb. 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/BRTRB2087124.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x2f8fd36aa910232ca40572ce2292e59de016076adb2781079e5700c58cb29ab0. 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/BXOGK1900001.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xbd9b7eef675756934d218a9ba5e69a37899a6bc9c92907195a3df6a491bd8ec6. 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/BXOGK2100068.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x3778e5b0234a1e1876cbd3177bf19306a2132efcca688e34716329de696775fa. 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/BRTRB2200143.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x6b31b8a07d00e7ce9a7eba150e3dada79b0fdc4317443c604adb8ab725e11059. 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/BRTRB2200146.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x39a60b8f74c177e8419370af275e7c5ae3d5aff3cac0fb205ca45300c7207956. 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/BRTRB2200147.
Fronteiras Imaginárias (Colômbia Brasil)
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xb3f259c80e130ae41b277388d1727d88a5289c8432d0ab237e9badda6938d78b. Chain 2 (Bitcoin): anchored in block 960397 (2026-07-31T12:24:41Z), 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/BXNNU1600007.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xdcf2c9774d44a0bf94fc844b20fa0895db6fe0b7ec1c81a2b7382e4bfa483ccc. Chain 2 (Bitcoin): anchored in block 960404 (2026-07-31T13:06:57Z), 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/BXNNU1600008.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xabb2542cebb8792b3fac167d96e2ff1995288963a9453956a3524696a70879f2. 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/BXNNU1600009.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xdeb35c1e4ec83989f9598edc93a5ce3e11aee09910bffac1f39531858133570b. 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/BRTRB2300498.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x7d2d3a99edaa51d08db6fce14df2bd10613808014452a7efe91c69bbeb9652f5. 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/QM6MZ2056670.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x0af57722fcb93a587425ddddf4f06a8d419f6a4dc298e93dfac353b4b98e568b. Chain 2 (Bitcoin): anchored in block 960317 (2026-07-30T21:35:24Z), 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/QZ2EW2300074.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xa22eba2cdff2653e6566a872a0413f1033290b426fc26a3765722ddd96010bbb. 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/QZ2EW2300075.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x3d3909ab7b05a14cc8bcf0735d0fc2bb41831faf5d67450606ffe6aa148ea696. Chain 2 (Bitcoin): anchored in block 960441 (2026-07-31T17:29:52Z), 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/QZ2EW2300078.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x9654ba0e375ed8db77052365f070d682b5b7ae9108b66838855446351919da32. Chain 2 (Bitcoin): anchored in block 960145 (2026-07-29T21:13:37Z), 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/QM4TW2118619.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x834259fdf493fa273e3dec241b36366c4ef7929528721831e4e78f55428d58db. Chain 2 (Bitcoin): anchored in block 960448 (2026-07-31T18:48:12Z), 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/QZ2EW2300081.
Minha Ciranda / Morena Vem Ver / Quem Me Deu Foi Lia
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xc5bdec8d80c6116f9697559153e1d8bf554dafda2b69e456c5059cd4d42d8a2e. 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/BRBRT0600061.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x908d2d124bc99ad33327917c125466c06f68e573f95bcdabe84c58e0e5443e8d. Chain 2 (Bitcoin): anchored in block 960296 (2026-07-30T19:11:09Z), 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/BRBRT0600063.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xad889aacd57eb0ad878e8a380d6e3cb76c70b42196abffedd82a4b9ee95d9bd1. 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/BRBRT0600064.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xd437f5491c9e0d120f524bcb702c5fe88bf580a5c72207894e305c4bd69499da. Chain 2 (Bitcoin): anchored in block 960397 (2026-07-31T12:24:41Z), 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/BRUPM1200001.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x82fc159bcf7d571c562b69aac679ebcc6695d9dfcd8c5dc70f2fa65f8af9554a. Chain 2 (Bitcoin): anchored in block 960468 (2026-07-31T21:25:57Z), 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/BRUPM1200002.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x2504826e13e86bf76bd28c6b738180642747a31d2b641907e49f48e8023d29c5. Chain 2 (Bitcoin): anchored in block 960455 (2026-07-31T19:53:13Z), 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/BRUPM1200003.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xf1ccd89beafa852647f62209f7c276f69d60a1a1497a1a2fb77065822ee473b5. 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/BRUPM1200012.