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
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x44278c0918bf68c375ca1f0ce017055054928ca4013443f447d35c5a392b19d7. 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/6937f448-b37c-43f6-bf0e-00609a3c2e0b.json and https://artists.proofprofile.net/proofs/artist/6937f448-b37c-43f6-bf0e-00609a3c2e0b.ots, run `ots verify -f record.json proof.ots` (https://opentimestamps.org).
Biribum Biribum - O Melhor Do Avô Cantigas
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
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xb8bd506575f972d8fd40b1da321b2b3a23403f1b1c5da79ab69adedd6d1e4a18. Chain 2 (Bitcoin): anchored in block 958792 (2026-07-20T01:36:00Z), 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/QMDA71535994.
Fantasminha Brincalhão - O Novo Livros Das Canções
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xec82bf578e451777028f541abbe9a74946c65d6b58c5c330ab535e88917c2c1e. 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/PTBM10700049.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xd9be66687760369537509bde9e1fc430af50adeed7257e442c27152c96af9880. 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/PTBM10700062.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x9bdcbfe25ee8310e3a6595c1649ee8f0aa6b900e7e9d05827fda480d658c4f06. Chain 2 (Bitcoin): anchored in block 958468 (2026-07-18T00:27:51Z), 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/PTIP11200769.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x24f171f2ad215895597d530003d564119a914a56992cbcc7ade7648e73c2a718. Chain 2 (Bitcoin): anchored in block 958388 (2026-07-17T09:14:21Z), 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/PTIP11200770.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x4883a73bf5ac6a81390eec50bd7234deb6ca8cddde1f7ff115f10761fb4c3e2e. Chain 2 (Bitcoin): anchored in block 958607 (2026-07-18T21:01:11Z), 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/PTIP11200771.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x9ce9341b5dc4b6aff4ce7c662421f1200023f4774a59981daebda19ee2577df3. Chain 2 (Bitcoin): anchored in block 958116 (2026-07-15T09:58:49Z), 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/PTIP11200772.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xf9d405c74861b058de65e1e574488eaf75ed00fecbd241680b596bc9abd62e74. 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/PTIP11500069.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x1fa54657833c697693b4d444a7e5b32c4b17705876706ed80f4e968d2689f408. Chain 2 (Bitcoin): anchored in block 958444 (2026-07-17T19:12:23Z), 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/PTIP11500070.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x0249492e758dca60899c2e883e0ac648e058dc27810e6164b2d12eb6761b7aa4. Chain 2 (Bitcoin): anchored in block 956656 (2026-07-04T14:03:39Z), 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/PTIP11500074.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xdae4a260d7a16b5100a7ac01e76c2f4694cfc8aa00b274e56909b7ab40623dfb. Chain 2 (Bitcoin): anchored in block 958798 (2026-07-20T02:03:24Z), 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/FRX201736403.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xa1aa590d8c92f88befe95f7b776d839656ad2c5b6fe4af75a3bb1964bb8affc1. Chain 2 (Bitcoin): anchored in block 958654 (2026-07-19T03:55:30Z), 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/FR96X1968509.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xa1aa590d8c92f88befe95f7b776d839656ad2c5b6fe4af75a3bb1964bb8affc1. Chain 2 (Bitcoin): anchored in block 958058 (2026-07-14T20:20:34Z), 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/FR96X1968509.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x98808f49fb4831e988a1be66918dd97cfd8c2dd0d4f2e8e4be6bcdd1659b6261. Chain 2 (Bitcoin): anchored in block 958761 (2026-07-19T19:05:40Z), 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/FR96X1968513.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xeffd37009bffe5a50752eb8634a5f8b2ebb4c7b8e1605835853cac585f7ce216. Chain 2 (Bitcoin): anchored in block 958489 (2026-07-18T04:13:26Z), 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/PT2EO2100520.
Vamos Lá Rimar (Eu Sou O Avô Cantigas, Todas As Crianças São Minhas Amigas)
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xcb0f0d7b159e6735b9b9b200fa6f1ef8b8698f529f8fc374172dc8fbc9a902ec. Chain 2 (Bitcoin): anchored in block 956639 (2026-07-04T11:19:20Z), 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/PT2EO2200503.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xa1381e9244e3599236870d4e6e056d545de30ef1f10b9ca5ae04faa30edce7ee. 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/PT2EO2200508.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x308018cb1bfa356ac31bdf8024dbb966cac09ea951e286ea4be7dfa74303658d. Chain 2 (Bitcoin): anchored in block 958601 (2026-07-18T19:27:02Z), 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/PT2EO2200509.
Vamos Lá Rimar (Eu Sou o Avô Cantigas, Todas as Crianças São Minhas Amigas)
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xa354f4993488d793fa69d67186a68c31fc7be040cbf85ebecb569753727b615b. 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/PT2EO2200502.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xcb0f0d7b159e6735b9b9b200fa6f1ef8b8698f529f8fc374172dc8fbc9a902ec. 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/PT2EO2200503.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xeabfc63f307756dd8a61eabda5a541c0d0257a55e130abe28b03239e145a77e5. 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/PT2EO2300681.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x9bde65b79cbcd1368a51d38c40c08176ae4ee5f6d825eef131c181195e7d3e4e. Chain 2 (Bitcoin): anchored in block 956551 (2026-07-03T21:18:05Z), 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/PT2EO2300680.