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 0x51bd0b8b62711fb165461dfda4ab57daef30d21617b6ceaf3af5eae288d49493. 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/e807040e-4310-4f56-ae77-61815b6ffd9b.json and https://artists.proofprofile.net/proofs/artist/e807040e-4310-4f56-ae77-61815b6ffd9b.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 0xb9b127560e586cd4688031ac5a2b066353db5a4ad7891890b52ac0ac5dc4a37f. Chain 2 (Bitcoin): anchored in block 956772 (2026-07-05T10:01:46Z), 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/QZ5AB1924094.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xea97a5781ca9735853f50e2bc170d315608c72954652d4ea9ff8ec8ccf11d201. Chain 2 (Bitcoin): anchored in block 958383 (2026-07-17T08:20:01Z), 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/QZ5AB1924095.
I Love Pagode na Ilha do Combu (Ao Vivo)
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x054cd52e954d3606b44e518bd7687fcb6ca91554766aaa7affed7dd3ef9821fb. Chain 2 (Bitcoin): anchored in block 958146 (2026-07-15T10:33:22Z), 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/QZ5AB1982524.
Cartão Postal / Gamei / Até o Sol Quis Ver / Melhor Eu Ir / Dois Rivais
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x2cc09ef4a1d3cf0c17b37c9be5b614b1cba7fa0d494deb35070303cc34b2fa6d. Chain 2 (Bitcoin): anchored in block 959023 (2026-07-21T15:22:58Z), 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/QZ5AB2083501.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x0b18990ce6e11fc52d726095136c962d50d76cf120456d617f5d8867a6bbbab8. Chain 2 (Bitcoin): anchored in block 958761 (2026-07-19T17:49:48Z), 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/QZHZ62124828.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xb971e58be4ee728d4679597d665d5af232daaf0c710804d66c4b1770a45dfda7. 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/QZHZ62124829.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xf9bf08119508bd292ef536a2ec22c8760e54be88b0ed3c55fc2bc61398ba0b55. 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/QZHZ62124831.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x7de306b1d115afc00a3ee3a7f141ee85af317a3d522cdd8d40315d9b2a28581f. Chain 2 (Bitcoin): anchored in block 957898 (2026-07-13T19:28:48Z), 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/QZHZ62138451.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x96224e2ea12de8fe253f2e793da66a778bfc652ce9164bb09b2f5188807cb771. 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/QZHZ62138453.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xc3ba309fbd5b573189b587fb2419570f7664aa9ce039023d9ade0013c7a8f309. Chain 2 (Bitcoin): anchored in block 956856 (2026-07-06T01:25:57Z), 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/QZHZ62138454.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x502e58ee51e19782fceec470c930716ef23eff136dd608367566ff82e960e882. Chain 2 (Bitcoin): anchored in block 958202 (2026-07-15T21:23:21Z), 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/QZHZ62138455.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x242f5154ad2102c4fa49ac0ffd0303b06e68a955484de44a8b67ea1f6f443ea6. Chain 2 (Bitcoin): anchored in block 959031 (2026-07-21T16:15:11Z), 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/BXGHW2100031.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x58e9311dabae00737110251d85b590f723663d14fabb08f60bea2f9f8d2a49a8. Chain 2 (Bitcoin): anchored in block 959043 (2026-07-21T18:40:26Z), 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/BXGHW2100032.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xed51bbcae331b29a4036a1ba4d6f0544dbb73e13fc58085f3e8e4ea6a5e74e28. Chain 2 (Bitcoin): anchored in block 958579 (2026-07-18T16:26:17Z), 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/BXGHW2100033.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x56a96aad87a7cba874dcacbc7af441681672952c302cb40e4f5be73db52b9888. Chain 2 (Bitcoin): anchored in block 958585 (2026-07-18T17:05:16Z), 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/BXGHW2100034.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x95e328ac4c4c260c175789dcd59ef4ed91f5df4aaa57661bb7e26667a7755e31. Chain 2 (Bitcoin): anchored in block 959023 (2026-07-21T15:22:58Z), 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/BXGHW2100043.
Eu Nunca Amei Assim / Insegurança / Meu Amor / Quando a Gente Ama / Nem de Graça - Ao Vivo
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xb3dd7c5e5244aa45affbfe34f441bc18baffd5d81deb41ef0c464f7a4e6bd9fc. Chain 2 (Bitcoin): anchored in block 956772 (2026-07-05T10:01:46Z), 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/QZNJX2378084.
Calma Amor / Pura Adrenalina / Curtindo a Vida - Ao Vivo
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x95ef2cf2eb067ccfd99a664f4475d998dfa249a7eb8f78d361c37295d26c76ce. Chain 2 (Bitcoin): anchored in block 958635 (2026-07-19T00:58:42Z), 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/QZNJX2378083.
Talarica / Manda Audio / Deixa Alagar / Ela Entrou na Dança / Thau e Bença - Ao Vivo
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xea0837eb5eb96559c77e07ab8894f542e92d5f03733aca3f59bc9387c3015f41. Chain 2 (Bitcoin): anchored in block 956422 (2026-07-03T01:01:38Z), 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/QZNJX2378085.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x37a799cf24a5c3c466ffab2a01e78543f8844372ccf985cc6bf89723fa45dca3. Chain 2 (Bitcoin): anchored in block 958329 (2026-07-16T21:48:38Z), 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/QZNJX2394274.
Loucura do Coração / Sinais / Engano - Ao Vivo
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x6a8542b1981fccb037dc89b62458089530732f3bb78a7557353674195e639cc3. 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/QZNJX2394275.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x05bcfa318eeebffa2477cc2780109b68d5c0f54d3b1d7cb650ceef1f39e0e54f. Chain 2 (Bitcoin): anchored in block 958538 (2026-07-18T10:30:13Z), 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/QZ5AB2494405.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xb04a06f1072772f71ab5db747c8efb3d96f93c92693136b0fc31bc7d5d6481b3. Chain 2 (Bitcoin): anchored in block 956422 (2026-07-03T01:01:38Z), 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/QZ5AB2494406.
Tá Vendo Aquela Lua / Sou o Cara pra Você / Leite Condensado - Ao Vivo
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x4b5fd8a0070ec50e2ec66bce1f073a063e9bcd24853e55599ce8d718b143383f. Chain 2 (Bitcoin): anchored in block 958166 (2026-07-15T15:55:19Z), 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/QZ5AB2494407.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x2934c3cb0144a3eb0b123c16f0b1e1cff6d7e6fd13e5bf061375676ec385a214. Chain 2 (Bitcoin): anchored in block 958650 (2026-07-19T03:36:41Z), 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/QZ5AB2494408.
Desafio / Eternamente / Desse Jeito É Ruim pra Mim / Reinventar - Ao Vivo
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x201027c1988cc1304e89cb9bc8480c11f52ca24b2b3db656a465a33242027bed. 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/QZ5AB2494409.