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 0xae6fd89675c9dd6b4fd3ed2c3c3f9f2e616cadc58bc4dce49d43a9bb34a51616. 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/f83aa603-416d-42f9-8c1e-385457c07f7f.json and https://artists.proofprofile.net/proofs/artist/f83aa603-416d-42f9-8c1e-385457c07f7f.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 0x2b6641b45ae88559b36003224c7204d3a02dca20e5378162c1845027961ac527. 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/BXX4Z2100014.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xa1a4dfd8004a3936ccf4cc992a4f99dad9489be91d17268ce83e7502e320726b. Chain 2 (Bitcoin): anchored in block 958552 (2026-07-18T13:15:29Z), 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/BXX4Z2100006.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xb92fd32a80bd0bb8cc69158d27caaebd536d3b0e8ece29af606480dc7a344134. 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/BXX4Z2100012.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x34f1d7a179a8eabeb2cd3d96a02e0b03d198f1f74c29499bf0bf2ed909980b8e. 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/BXX4Z2100005.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xd6665aedb04f96c63463ddfce646af6a85f5b22a2bc422b4a7901bce1ec4fcc5. 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/BXX4Z2300013.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x35d5e35a2ac3824094f84f2d878cdad804923838aa8f122d6be3dc4e2f9393db. Chain 2 (Bitcoin): anchored in block 958316 (2026-07-16T19:42:29Z), 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/BXX4Z2400004.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x8705cec9568892c52ffd1f67c6b3e308069be3951bd32d9c070143a48289fd7e. 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/BXX4Z2400005.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x70629efc449456f6f4982083e17241c7ad8355237aefb5fff49c3f98d80e7df7. Chain 2 (Bitcoin): anchored in block 958392 (2026-07-17T09:46:31Z), 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/BXX4Z2400006.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xbc9498490993bfa744014b5dac105db6384cb052323724c61deb5696e0a7485b. 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/BXX4Z2400008.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x2c35eb59abe65e1e6b68b100c9792b7fdd35006bcaadd7706dd1a05e158aae0d. 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/BXX4Z2400009.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x09ad9622b0db6012076a17efe63e082f309bb21b26c84d86224d1f307dc75d71. Chain 2 (Bitcoin): anchored in block 958448 (2026-07-17T19:49:21Z), 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/BXX4Z2400017.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xaa18056433ee4c9f065b16671447409eb27c4349e29dcff2ab3b620edd2815e7. Chain 2 (Bitcoin): anchored in block 956841 (2026-07-05T22:14:35Z), 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/BXX4Z2400013.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x5ec7fbcf2f437cb719d0ced77409758212656a59504d1d2f4ce2d59beb65f205. 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/BXX4Z2400014.
Axé em Samba (Doce Obsessão / Não Tem Lua / Tum Tum Goiaba / Miragem) - Ao Vivo
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x666eddd3879f08481d869576ab10ec075d2ca6a45437ac287c802469e02ed1f1. 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/BXX4Z2400018.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xb769ed4c7dc11dcf84ecb763b6ab039190836564363f403f578af46beb9db61e. Chain 2 (Bitcoin): anchored in block 958943 (2026-07-21T00:27:37Z), 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/BXX4Z2400019.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xd74f182010a5641787abee3fb32a39ccb3022db86fbd5468d5bae0825766c791. Chain 2 (Bitcoin): anchored in block 959047 (2026-07-21T19:17:28Z), 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/BXX4Z2400022.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xbc9498490993bfa744014b5dac105db6384cb052323724c61deb5696e0a7485b. 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/BXX4Z2400008.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xc6028e7f20fd03c7fc33d786786f290165a0c450c26e2fd74c1aa94f98e94171. 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/BXX4Z2400025.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x6f69f0b37a25ed482d7cb43e6c3e1aefd04f9f21a7eac8adf93a9a4784611ce9. Chain 2 (Bitcoin): anchored in block 957872 (2026-07-13T15:39:45Z), 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/BXX4Z2400015.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x9faec96e9a2d4290442d2dc898d0119cdc81059e91f2f9bcbb2cce06fe4ba4cf. 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/BXX4Z2400020.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x1f54829499a2c310554860261125aeeb09cafd00b9c0c0be60a1a6fe3517e5f5. 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/BXX4Z2400021.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xd74f182010a5641787abee3fb32a39ccb3022db86fbd5468d5bae0825766c791. Chain 2 (Bitcoin): anchored in block 957867 (2026-07-13T14:55:20Z), 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/BXX4Z2400022.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xb1ec25198254fb267480e13c93b319b5d4ad6d72a6ad4f3f6fdecd08f8e16baa. Chain 2 (Bitcoin): anchored in block 958276 (2026-07-16T10:20:17Z), 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/BXX4Z2400016.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x0c490fdd25d88e311dcdebc974242648b6fe6cb56f869c4f3991c131b933e75a. Chain 2 (Bitcoin): anchored in block 958316 (2026-07-16T19:42:29Z), 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/BXX4Z2400026.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xe636a812cdf514afbdd93c3bee71459fee910460bfe2e83aba472c0e0c64fb26. 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/BXX4Z2400027.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x55aa132dbe1cfae327d9e7f5f137230744b374c4e1afa7c11b8a26ad2c60c710. Chain 2 (Bitcoin): anchored in block 958349 (2026-07-17T02:28:59Z), 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/BXX4Z2400028.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x5c5e6be206704bf668c3e6566751ab3f73a7ea0ed2c653817e87102db58108b8. 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/BXX4Z2400029.
Samba de Roda (Quixabeira / A Massa / Flor de Laranjeira / Moinho da Bahia / Marinheiro Só / Adeus Adeus - Ao Vivo
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x5799edac8d608ff31f99b664fb62541bf96878b0ec7f5b66ea54a48d2691769a. Chain 2 (Bitcoin): anchored in block 957867 (2026-07-13T14:55:20Z), 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/BXX4Z2400030.