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 0x5944d8f9a1a403bc3d1b798ff3e912b1fbdb39606c5058972e595b7dd1716440. 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/43faea93-b51b-4530-85ce-0ad7cbe30b63.json and https://artists.proofprofile.net/proofs/artist/43faea93-b51b-4530-85ce-0ad7cbe30b63.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 0xa9c0bf4fc190b1e253be6833e8619f9679ffac8844534a3cd6acf37e2547fbbe. Chain 2 (Bitcoin): anchored in block 959152 (2026-07-22T19:08:24Z), 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/USHM91663153.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x663a0f1ccb7026528319e134718ceda205de1f9fbdb3eb92eb83bead0123dd94. 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/USHM91663154.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x0b6de7cd5193373bead58f697bdd7adf455dba4c3d7d4715702717223b89fabd. 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/USHM91663155.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x91bbde087cb3b76d2534db76710aa818d405e288455af1681a49d71752e5ca7d. 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/USHM91663157.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x2a4f17b6766d986bd78d6d2480682ddbb54453b7d219f29009d168ecd73263ed. 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/USHM91663158.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xb3679b9ccde5b3965ed8a03eaf42190d386b4f9f24080730e851c8e8f971d398. 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/BRCZZ0900038.
Tu Que Estás Assentado (feat. Leonardo Gonçalves)
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xd4e5b7b67f14aba328425099b2dbd6de7e2e9ddba4345463287dff56814afc43. Chain 2 (Bitcoin): anchored in block 958447 (2026-07-17T19:47:19Z), 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/BRCZZ0900047.
Milagres Acontecem (feat. Pregador Luo & Lito Atalaia)
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x8f1a3142485df9a11cfd060fdb392d47a7e8e636119d025eab87565e93d66174. Chain 2 (Bitcoin): anchored in block 958349 (2026-07-17T02:28:59Z), 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/BRCZZ0900049.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xa894eedaf81031b23e4a334933dae3f53594b8e1e54effcfed6313bce4522aec. 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/BRCZZ0900046.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xeb63d4f922d2f07840d5d4b9741da416f228095888e3cf2d6ac4f0dc5d8deaf1. Chain 2 (Bitcoin): anchored in block 958911 (2026-07-20T19:21:08Z), 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/BRCZZ1100001.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x4e5288ac11157076efd3e49975647ed180d3aa5ce51c746e76bf55f80a2d0e65. Chain 2 (Bitcoin): anchored in block 956474 (2026-07-03T08:56:35Z), 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/BRCZZ1100004.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xde4f70baa8edb856ff4f933082bdfeb8fa8d694052581029ec658ffcb42ac828. Chain 2 (Bitcoin): anchored in block 958823 (2026-07-20T07:27:09Z), 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/BRCZZ1100005.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x885a1c5ffc81a976dd71909bed1c268b99abbba51add584606e68f430d35aee6. Chain 2 (Bitcoin): anchored in block 956826 (2026-07-05T19:27:56Z), 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/BRCZZ1100011.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xe2697c88d24eaed604807c2f20b6cc683760c167df642ba14a888f7efdc0b1d2. 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/BRCZZ1100016.
Luciano Claw no Estúdio Showlivre Gospel (Ao Vivo)
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xd7701a1b203048165fe52374a7984ff1e3cb6cc43a671926106f04411fe004da. 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/BR4VT2200082.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x725832421b748877234a6f17303960ab3c7b3b5609cb6149b351fd5131720a22. Chain 2 (Bitcoin): anchored in block 958907 (2026-07-20T18:46:55Z), 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/BR4VT2200084.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x2b470d97e682dc25c6ecbaa606731c315643c62cdfe2cdde5c899af8447283d1. 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/BR4VT2300001.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x7d67b2ab5c5868175fb49670cfe49908c73ea98e1540b9ceea3e20b2e6b2d522. 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/BR4VT2300030.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x0019c2cd7f260a6b6aefce64bcaa0d6e7124393c5ed96304e7265eacb8d2f39e. 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/BR4VT2400236.
Perdoado/ Largue Suas Pedras (feat. Pregador Luo)
Medley Black (feat. Paulo César Baruk, Luciano Claw, Lito Atalaia & André Mota)
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x7ffe925b5cf2eadbdaf158893c7145437e51ca22850b5fb80ea00d5bd299b5f6. 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/BRYY81200015.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xe9d1b777504fba368975ddae57ae6019fd79bb242c164fe6400777597b8b3dc0. 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/BRYY81200156.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xe64aa2902afc2bd5bdb282343505015673be92ffc7bdb8d0ce42381863779c34. 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/QZHZ31926125.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xf1b55c41f34b3b4bb363ec081967f58b1ad69a20079a8c984951f5d41fc00d54. 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/BRAP61900023.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x060bc2ef0bb63ea0a02cadafbad5beaa6d96f77397ff619cfb85dce21a82ecb7. 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/BRAP61700004.
Medley Black (feat. Rodrigo Mozart, Luciano Claw & Lito Atalaia)
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x66b563811a7ef4a9af3824551810442c12fc2a6b52fe38dd22ca65befbd092c4. 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/BRPC20700197.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xe5637e62445fbffaf28fe0cb8fc284d91080852d3ca7f5d41bf7fdcec49d6d65. 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/BRPC20500083.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x6a0faec6e35aa8c88efdc0ec11831fd2870982fdad3c6f3100515f9a2c7a48e5. 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/BRVJ90800013.