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 0xef9d1c788d5ab6cf26946ba428ef906a580057aef2c9c81d71a9668bca3ac09c. Chain 2 (Bitcoin): anchored in block 953423 (2026-06-12T21:20:00Z). Bridge: the canonical record inside this Bitcoin proof contains the same CopyrightID. Verify: download https://artists.proofprofile.net/proofs/artist/fdf86bc4-3079-4852-a3f8-f1ca57268c6a.json and https://artists.proofprofile.net/proofs/artist/fdf86bc4-3079-4852-a3f8-f1ca57268c6a.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
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x1d237505c2747cca9429dd02a85bb4b973fd1e0f06de975ff59600e277e63cbb. Chain 2 (Bitcoin): anchored in block 958363 (2026-07-17T04:34:46Z), 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/PTNG11200480.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x423811a28a96fcbbc35310e9fabaed524ee2376d9031a0808de5f90de9fcf7d2. Chain 2 (Bitcoin): anchored in block 957805 (2026-07-13T04:34:37Z), 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/PTNG11200626.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xb4c131de0874464007b65d89dffbb1c87c0f4a7d2ecdaca7d681c49fd672a29d. Chain 2 (Bitcoin): anchored in block 958180 (2026-07-15T20:41:11Z), 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/PTNG11200627.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x5d0edf2308e4bf0f8ff879f0ab187eb9e9409d281771ee16d355a78d4f514351. 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/PTNG11200628.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x6299a2bacdec007466b7f4a44661724671c4b8624dd0834ff22faa1feb00dba7. 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/PTNG11200630.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x2ca6f7516b10d8256c39192bd618822699c119048b1ad78f8cd7426d75e1236e. Chain 2 (Bitcoin): anchored in block 958951 (2026-07-21T03:55:28Z), 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/PTNG11200631.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x2e0ba21633f8197ec0c604e94fd8496db4e4365e663cfe36d6683ca359d52564. Chain 2 (Bitcoin): anchored in block 958951 (2026-07-21T04:49:13Z), 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/PTNG11200632.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x7b0894e9482470a35592b62a1d3eaa600ba4f267de7ae961ffe17bc9a69e0529. Chain 2 (Bitcoin): anchored in block 956713 (2026-07-04T23:03:25Z), 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/PTNG11200633.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x06bef5c0379942ff28316f5942e38140d74156b30d22643ea1e4d459d1dbc5f1. Chain 2 (Bitcoin): anchored in block 958996 (2026-07-21T10:57:35Z), 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/PTNG11200637.
Do Litoral Ao Sertao - Tributo A Luiz Gonzaga
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x731ccffdf4bae13058edb1f9389175a8bd016f390efeb5f5bab4f93035fcf272. Chain 2 (Bitcoin): anchored in block 958276 (2026-07-16T12:42:42Z), 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/BRPOY0800161.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x744dc16f3f3a4a0381cdfd6b6bd5f7de56095a7e6b860a74ae6e7be68102a191. 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/BRPOY0800162.
Bairro dos Meus Amores / Último Regresso / Evocação Nº 1 / Recife / Frevo Número Três do Recife - Ao Vivo
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xc86e031b0f5b1af724136821c19f6eb74860abce71a06d993acafd2ec5ac1d78. 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/BRPOY0800167.
Sou Teu Amor / O Bicho Vai Pegar - Ao Vivo
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xed67a69282cd14c65c3b8e28355da73997de5cb5054dba18d936ec0123fb25c6. Chain 2 (Bitcoin): anchored in block 956500 (2026-07-03T13:55:21Z), 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/BRPOY0800169.
Pátria Amada, Banho de Cheiro, Lenha No Fogo - Medley
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x8695acf5fbb32d3f3b4e6124009a27b8c1cc73fc2bdc5ebf5db64fd7ffcbce90. Chain 2 (Bitcoin): anchored in block 958622 (2026-07-18T22:58:55Z), 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/PTNG11500198.
Ta Bom Demais Vai Pegar Fogo Hino de Pitombeira de Olinda Quarta-Feira Ingrata - Original
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xdc7fab90596dcf0101140f3aa11f3b343f07325640573f16956e2012b2d754ca. Chain 2 (Bitcoin): anchored in block 956500 (2026-07-03T13:55:21Z), 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/PTNG11700008.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xbe64bb10daceef0db3b6b600db5ad5733ff0cb3ddc600b2635938cfcab823260. Chain 2 (Bitcoin): anchored in block 956476 (2026-07-03T09:04:44Z), 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/PTNG11700017.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x2c73c865ae421d0420ab7e89c4ef56b20b902d16db85a4281cb2fa87891282a8. 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/PTNG11700019.
Batutas de São José - Galo - Elefante - Vassourinhas
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xe1e981bb0d5c217a3dab58901687bf99620c982a5f835527065d26bfb0ae02a1. Chain 2 (Bitcoin): anchored in block 958276 (2026-07-16T13:05:41Z), 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/PTNG11700240.
FORRO NA ESTRADA Tour Brasil-Europa-Ao Vivo
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x0e59028ab95ef90f8688fded4aae7637ca12a4f26739dc36caf3eb8a285ce54b. 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/US7VG2366080.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x041b4bbb40017502d7b422b238bb76c56aca27a60cd9eabe5118281ae1643400. Chain 2 (Bitcoin): anchored in block 958554 (2026-07-18T13:17:01Z), 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/US7VG2366081.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xf37e8bc0ef900a19384b6d0895393985de705600731e3aa1958c19f57340e043. Chain 2 (Bitcoin): anchored in block 957145 (2026-07-08T08:56:20Z), 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/BXMPO1800032.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x55fde39517a977698681fc38de59e9457041e1a55b10449f2584dedd5a0b3439. Chain 2 (Bitcoin): anchored in block 960418 (2026-07-31T15:20:15Z), 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/BXMPO1800040.
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 0xa8ad7a9d9b0d6911dcfe8edd7c88ad8486a309ed539c0b27b8eeee5bfff6b21a. 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/BK2OA2500033.