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 0x4465e19772beaabde32261667276468a6f160f6f341ea791916971bf6b9e727a. 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/6c93ea79-f17b-4f0f-b57a-070d67ad3a18.json and https://artists.proofprofile.net/proofs/artist/6c93ea79-f17b-4f0f-b57a-070d67ad3a18.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 0x73f628620ff3323f030dbb31fef976d56213a3e3afa7a043eea0628396347c4c. 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/ES47F2401256.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x66598a38f29a00acecc8502b9200bc9bb5f03f0199ff74819d13bcd4f158000c. 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/ES06F2402863.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xac4b02e848b939b6a0892e129ad351d293572431e45b3bf079b7c95d118be4b9. Chain 2 (Bitcoin): anchored in block 960368 (2026-07-31T08:26:41Z), 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/ES06F2402864.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x974675c6684e5b532a10d294fb6e87a8fceff8018511bf9777fd2ff0175db16d. 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/ES06F2402865.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xb5b01262b75faaed796f4706550772f7a91d0f1ca53661e3b0e63b64b62f8fb3. Chain 2 (Bitcoin): anchored in block 960348 (2026-07-31T05:17:02Z), 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/ES06F2401902.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x985e0294e6eaf306e108932f4c44516e1dd8ad83fec14e2db6a6d8376b56ae26. 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/ES06F2401901.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xdcfd46f5864721ce2b8436dc961a520ce34472f26e791ba21c74f1b6a032efd4. 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/ES06F2401899.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x225a52b64e4f1470c7575ebfdc4c0606a86f51b3342055b61c9e1d83296493d6. 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/ES06F2401900.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xe5ec0a665967b5628ab4a20d9db29d27232a4dfbaddcebb079764f483874a72d. Chain 2 (Bitcoin): anchored in block 957073 (2026-07-07T18:39:05Z), 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/ES06F2401839.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xc508ed3bc902d6e0db8a39120efe8b40ae904faf62e3f6ea34cce640a908a50d. 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/ES06F2401838.
Os Profissional do Sexo / Piquizin dos Cria
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x99bbc0b822b72d7e2d157c53ef763ef828411896da8b3975c8774254805ef6e8. 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/ES06F2401837.
Arrocha Funk, Pam Pam / Piquizin dos Cria
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xeb369a36e78e521bc77cd139c10a3430e425688c5b1d19006e0e482e1dc3d8f5. Chain 2 (Bitcoin): anchored in block 960095 (2026-07-29T11:07:37Z), 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/ES06F2401836.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xd2f0f544b54887c2c377fec648792965af4e849bf147ab74ec1339386f2ca444. 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/ES47F2401233.
Vou Mandar Você Entrar (feat. Mc Naninha)
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xf188c07b1dd7500e8eda8f56df0fe360e92f508e9228bf4f34c433c53e5f738d. 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/ES47F2401124.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x6d847943d91d82f82447edb4eb29f2c4f4d075d920b4cd875102c05ccc22c0c9. 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/ES47F2401125.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x15c9d5a6ab7877e945c459c8dd7d511f6f595dcf6e97df6f407d21a49ca5fd06. Chain 2 (Bitcoin): anchored in block 960106 (2026-07-29T12:41:21Z), 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/ES47F2401126.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x3b48f264a13cc5fc3bd582b4a1554a6d12255e76915fae6b5e1e6c70c03f6a4d. 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/ES06F2300970.
É Só a Ponta da Piroca (feat. MC Fabinho da Osk)
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xc6e196ada425e9f59e71e79a3affcd4a810aa312e15738ecfc691994861d314b. Chain 2 (Bitcoin): anchored in block 960284 (2026-07-30T17:23:26Z), 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/ES06F2300580.
Nós Vai Te Pegar Firme (feat. Mc Magrinho)
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x52b4fdc98ac99d0d41447f8b966f7e61c16c7797ea5d2c37d3971cde4026c5ea. 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/ES06F2300573.
Na Xrc da Novinha (feat. Mc Brenno ZS, Mc Brenda & Mc Jessica)
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xca06d53e1a98fd06496e5999dfca1914375472650f07c9c3cebf49eeb5918ef6. 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/ES06F2300572.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xa4f8f22f403eab670e2b0865f4439b9d6312dc516fcdb71e9811791734e7e210. 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/ES06F2300571.
Glock Camuflada (feat. Mc Jajau, Thammy & Mc Dobella)
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x2c50e8d45b8a960293043eb9c6861a4cc8de8e15a10835a07e3e9d6744be130a. Chain 2 (Bitcoin): anchored in block 960117 (2026-07-29T14:28:24Z), 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/ES06F2300570.
Em Cima da Laje 2 (feat. MC Saci & Mc Dobella)
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x00e9fe3d83607ce6a955bf52531de8b272c482a83270be68f775921dc3d64c4b. Chain 2 (Bitcoin): anchored in block 960150 (2026-07-29T21:51:49Z), 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/ES06F2300569.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xd149821b1a195845eea02fae815c11d458e378be828b4076359a216907d1fecc. 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/ES06F2300579.
Aqui em BH Ninguém É de Ninguém (feat. Dj Scar)
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x081698abcfd1d79982300c73d32ece1fe979188a4d78969843bade9e9881067a. 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/ES06F2300578.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x7e63f4c78e9b9973b9d215d7c905999448821055c48800fdaa2637c11a14f479. 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/ES06F2300296.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x0aa225eecd60634c8b3d4209d490ebc8b49ef6bcc1eb0b4e0fb02e064310f554. Chain 2 (Bitcoin): anchored in block 960403 (2026-07-31T13:04:34Z), 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/ES06F2300295.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x17a822d6c1ea4181198dd9cc11c219bd4b789366d4ce1e6b0a0ccccbc08f5b40. 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/ES06F2300283.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x256b3aaa697b55b15a1d9ee56d197f2ebb170c645c9debe3fa4917bac6a34924. Chain 2 (Bitcoin): anchored in block 960160 (2026-07-29T22:48:59Z), 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/ESA112443615.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x8d565478be2cf68c49927d7e4ce2269489a2b1d0f912142d3ffc037fac92195d. 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/ESA112455925.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xb0a0ebe06a6033741d85ac0d524ad29c2903d0db7d8a1d5dd6ff9a006805a125. 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/ES06F2403272.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xd3bed9014a465ba0912fc9afa26eb077d51eaf1cf2f2c4aa70179490f2e5cad3. 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/ES06F2403273.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x20b8aa9e92bfd76d6248e0234fee07d87e04e87f3726097f4e376c7cb8a18f2c. 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/ES06F2403274.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x7f304bd138e7773a7a310409233dab169568d0a5ba60e86a85090862dea7de6d. Chain 2 (Bitcoin): anchored in block 957011 (2026-07-07T08:25:35Z), 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/ES06F2403275.