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 0x9718018f83fe60fabe23487fa64f2b45c478047f1233ebe85f1b5eccb016800f. 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/c3b9821c-6890-4ffe-a028-f281f892eb53.json and https://artists.proofprofile.net/proofs/artist/c3b9821c-6890-4ffe-a028-f281f892eb53.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 0x13c80123409dd02de83957fba281ec79a7339f5d6ffd796e3b519a190f32a02c. Chain 2 (Bitcoin): anchored in block 958985 (2026-07-21T08:39:15Z), 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/QZNJW2170214.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xa32964d6c79175bcd3571477595626da406a0884fd2678bda6ac6b3fbc2b57aa. Chain 2 (Bitcoin): anchored in block 957851 (2026-07-13T11:26:33Z), 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/QZNJW2170233.
T.U. Estrela Guia - Pontos Interpretados
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x04604e5ad80a1ed1bf1ab8c4ff421fcae02c971e7ea940f1c6d7a38301cddc95. Chain 2 (Bitcoin): anchored in block 958461 (2026-07-17T23:18:11Z), 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/QZNJX2166847.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x2cb432af7cd188c90f7503f630f6ca010ba489a166bacfa10563173174952e42. Chain 2 (Bitcoin): anchored in block 956420 (2026-07-03T00:42:11Z), 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/QZNJY2106078.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xeae8db8d3d463b4b8931cbf217d508f77962ada5f578b3eb933bca61fd6f6cb6. 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/QZNJX2166857.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x1ab12a109d4d4fc2c6e95f57f65b8e1cb36da0f18fd42b8ce44aa1eaac5c4927. Chain 2 (Bitcoin): anchored in block 959144 (2026-07-22T15:38:35Z), 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/QZMZ92232570.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x7063ddb49abc78bb2bb29b87bf8a343bd61b547084d0145b1e14be5ab7bc4eb7. 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/QZMZ92232572.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x52de5a3daf86ca26b47fc178afe9c4fa71f7aab9b6c1acb76beebfc976f6a8f4. Chain 2 (Bitcoin): anchored in block 957770 (2026-07-12T23:17:00Z), 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/QZNJZ2271690.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x3180eb27fd6f9050e81c6501fcfdc54fad26915e9af6af819f6bc43453996481. Chain 2 (Bitcoin): anchored in block 958371 (2026-07-17T05:45:43Z), 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/QZNJZ2271694.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x838ad3d1aaaca9a934c8ef754eac4d4e1e4e336ddb849b30b8f2c73f4e78e4e6. Chain 2 (Bitcoin): anchored in block 956822 (2026-07-05T18:48:28Z), 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/QZNJZ2393563.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x5602a295756ac81f16b2c4bbd67146be7d428d87b10d98c3d3f3bc24e92dc480. 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/QZNJZ2393566.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x1d7ac33094a9460d6d9860ee62bb1b5c4ebdfc194e4a7b9e48424c29fafff59a. Chain 2 (Bitcoin): anchored in block 958670 (2026-07-19T05:26:23Z), 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/QZNJZ2393571.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x9e652899c439e74ac0cdef9abd6e6961d33b103fcb19ddf7cf559ae2fb7f51b7. 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/QZW9M2333766.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xbb5cf309edb5eb7f2bd1850e3f403658277193f09728e03a5e3e1dbd2b6dcebf. Chain 2 (Bitcoin): anchored in block 956576 (2026-07-04T02:06:47Z), 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/QZW9M2333773.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x0cb1f2f55017e0a21644ec618af37b42d2f9fcacb8593e9fb5b0cea0a428c9b8. 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/QZW9M2333774.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x8154997d79ec3d2598dd747787e9aa4e7112c616ce6ae63d96d75ac6c238fa39. 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/QZGLM2477277.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xb4a4b675787f8eef23456ec4a9f918fb010b2bd9ba169f27447d5ddaa3be3290. Chain 2 (Bitcoin): anchored in block 959114 (2026-07-22T08:41:42Z), 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/QZGLM2477280.
Dona Padilha Girou / Abre Essa Cova Eu Quero Ver Tremer
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x79d5b22bfcf8c88dc11fa8d517f7cb3607904a6ff634d3f2ff541c3f17a161b4. Chain 2 (Bitcoin): anchored in block 958104 (2026-07-15T05:34:05Z), 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/QZGLM2477281.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x9b9d8090d1d5e2da290d29bc58cd0a63c94a2c14b407926f0d2450d48b1a9f80. 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/QZGLM2477283.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xec764e780463cc0472e1ef2f514542476efff19ef4ce0ddc92619c216fcb3320. Chain 2 (Bitcoin): anchored in block 958340 (2026-07-17T00:53:26Z), 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/QZGLM2477284.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x5ab84bf9624a1155ffc489e4554fd1f7ad39981c892cb1aa3c4070b56858bbae. Chain 2 (Bitcoin): anchored in block 958842 (2026-07-20T07:48:27Z), 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/QZGLM2477285.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xca42f36a634e9ac006db63d1cbf673e2469b5efa4290c94e3bff9566ef771dd8. 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/QZMZ92462775.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xa3fcf590e9a1f99f15047a10b2bbc64ec645bfb6d9a73ba2ac9ea56de384e398. Chain 2 (Bitcoin): anchored in block 956857 (2026-07-06T01:26:17Z), 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/QZMZ92462777.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x34c7115f4e0ee94e945564e6d8d6cce1e711f2c1a01b858de0c3c7d9140deef3. Chain 2 (Bitcoin): anchored in block 958808 (2026-07-20T02:49:15Z), 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/QZGLM2537000.
Soltei Minha Cabocla de Pena / Caboclo das Matas
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x075c5e2ad4c0346a00d73d20284b88a69622970ea9de5a1945447b42e6a77729. Chain 2 (Bitcoin): anchored in block 959105 (2026-07-22T06:33:30Z), 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/QZGLM2537003.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xe3475c4fd0279d4a1392cb2c28dcc3a170772de31897147dda2527e78bd7644d. Chain 2 (Bitcoin): anchored in block 958980 (2026-07-21T07:04:12Z), 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/QZGLM2576975.