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 0x64ad21d4d4a7c83a6c4acafcecccc961f5ddc3e455bf381d7604926d8699f93a. 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/526817a7-6121-4cb7-865f-966bdabb21c4.json and https://artists.proofprofile.net/proofs/artist/526817a7-6121-4cb7-865f-966bdabb21c4.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 0x013c3b3b9abeb8abbb0320b50fd221e902139ff6a94a4ecd9e7461016599f0ec. 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/BX3NE2300050.
Caju pra Baixo e Ferrugem (Ao Vivo FM O Dia)
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xb360d7a55498b44a379c2a8d136c62b8045360b783ceb4444b90400f5241fd95. Chain 2 (Bitcoin): anchored in block 953513 (2026-06-13T12:47:07Z), 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/ISRCB2400203.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xcfa0b5893166ef7c3bf21185a3328292f3840ac3cc9cfc8a5450d36987b1762c. Chain 2 (Bitcoin): anchored in block 953536 (2026-06-13T17:25:41Z), 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/ISRCB2400224.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x263130ad68f8723ac09720e3e28ea7246301da2443d22e5f722d31b2f77db9b4. Chain 2 (Bitcoin): anchored in block 953528 (2026-06-13T15:41:10Z), 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/ISRCB2400205.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x172f57fde00bd0c73d7e79974d7ce52482f2a4e2d07a6ae07de1f2abdce46f05. Chain 2 (Bitcoin): anchored in block 953528 (2026-06-13T15:41:10Z), 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/ISRCB2400207.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x28997d9137036de62861bf85534b48d2623fd184b01497355c968b3260bb8c16. Chain 2 (Bitcoin): anchored in block 953513 (2026-06-13T12:47:07Z), 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/ISRCB2400220.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xccadc419db9a05e54a523c1b9b791246a7815c8f8396f413a3d30178a5ca05ea. Chain 2 (Bitcoin): anchored in block 953513 (2026-06-13T12:47:07Z), 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/ISRCB2400222.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x5c29cede64d071bd2db5216492f4adb5a9b8b202f9a32009a151b2d42d86b141. Chain 2 (Bitcoin): anchored in block 953513 (2026-06-13T12:47:07Z), 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/ISRCB2400209.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x3cc895d4c791fc08d105546deffda31a1d0152bf135171835735e633f6cfb96e. Chain 2 (Bitcoin): anchored in block 953513 (2026-06-13T12:47:07Z), 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/ISRCB2400211.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xc28a8fd05b72ebdb2ef01587a3cba567ec940f5a06806f624dcf6ffb2f658bf9. Chain 2 (Bitcoin): anchored in block 953513 (2026-06-13T12:47:07Z), 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/ISRCB2400213.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x210a5e283ff1a5515a8cb7a2f38e2c32a4b431d4800cefd2d5128a6612d5dd2b. Chain 2 (Bitcoin): anchored in block 953513 (2026-06-13T12:47:07Z), 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/ISRCB2400215.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x48d34b06000ba345006f0f9da06d31fa608bcbdeb019ac8dfddcf8fd16a3cf34. Chain 2 (Bitcoin): anchored in block 953513 (2026-06-13T12:47:07Z), 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/ISRCB2400217.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xca81bd4f6d2529fe62b0bcdc3b5e7c8f93beffbb8d5aaa1f0eaf1a3655ac8207. Chain 2 (Bitcoin): anchored in block 953513 (2026-06-13T12:47:07Z), 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/ISRCB2400226.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xeef8915995822623274bb809609c8052a8fd58d49124e9a6c21e403384076f7d. 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/BXSWA2300006.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xc5942fd7d6ebb537d7275a5552a09b618bde318b6f816fcb1537897950595ca3. 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/BXSWA2300045.
A Carta / Franqueza / Intriga da Oposição
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x48ad1de08ecf2d7557ebbd281d778954e3e75d0ee1e3f5d91d88c3c35f7878b4. 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/BXSWA2200012.
Quando É Amor / Temporal / Meu Jeito de Amar
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xa45e75be07da524cc56180ff830a5a34a5cfce8d43fb63efccc8728b308401b7. Chain 2 (Bitcoin): anchored in block 953513 (2026-06-13T12:47:07Z), 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/BXSWA2200006.
Código do Amor / Péssimo Negócio / Faz Isso Não
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x2ed51e2ff0bab3b3f92091a24f1ec62f9707eacc59b717be07699e7a38baad67. Chain 2 (Bitcoin): anchored in block 953513 (2026-06-13T12:47:07Z), 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/BXSWA2200011.
Como Nunca Amei Ninguém / Com Humildade / Ainda É Cedo pra Dizer Bye Bye
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x7a90713544d67a6e69b9570503e90f039dbe34dfb25a15c724ebee6e6277e9ab. Chain 2 (Bitcoin): anchored in block 953513 (2026-06-13T12:47:07Z), 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/BXSWA2200001.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xc35c038844e464718ff09297e2a58e4ef5d4ce0c621f2f8d443c992d6b7c3f1a. Chain 2 (Bitcoin): anchored in block 953513 (2026-06-13T12:47:07Z), 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/BXSWA2200013.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x2616be262cff4d8303c54cf495ba88e944ddbc80fdce81f1f6b4dc66a736dd80. Chain 2 (Bitcoin): anchored in block 953513 (2026-06-13T12:47:07Z), 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/BXSWA2200014.
Velocidade da Luz / Verdade / Hoje Eu Vou Pagodear
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xe0779e27f67e86b350056827c252876bfa60090a4a013393ad5709cce5409b3e. Chain 2 (Bitcoin): anchored in block 953513 (2026-06-13T12:47:07Z), 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/BXSWA2200002.
Pela Vida Inteira / Maçã do Amor / Valeu pra Aprender
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xc6c6d9fa727b94433c5df85e911e2330c489485e2d615c13bb2dccb8a4066356. Chain 2 (Bitcoin): anchored in block 953513 (2026-06-13T12:47:07Z), 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/BXSWA2200008.