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 0xfb7be28602bb3fef8b0652df7a900f0cdd4c68d26d465077260d2202ca35b425. 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/f341b4c5-6400-438c-9f88-7a57d2072de5.json and https://artists.proofprofile.net/proofs/artist/f341b4c5-6400-438c-9f88-7a57d2072de5.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 0xcddec55384025802ffd835969d39ab6ca619dfc5f7c4fecda6132a202d17607e. Chain 2 (Bitcoin): anchored in block 958838 (2026-07-20T07:01:21Z), 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/BRBMG9101302.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xa1c8613299dbbba7b2403bea4c404230ababe8006c03b8fdef53b7d029f5136a. Chain 2 (Bitcoin): anchored in block 958517 (2026-07-18T07:54:29Z), 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/BRBMG9200161.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x78a6ccf9107a0554a338b54130608dd49201b9d554343ff39f5beae9c749c4d6. 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/BRBMG9200168.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x13ecd56ba21c51d2c2bec1eb3aa5e3e99b2fa379a0f37c37f82aa414d3b2ef4e. 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/BRBMG9200172.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xc3c79f8f870cfca3f97be7b4e856b3df4f739989cc7e6769ec634b36d4428b0e. Chain 2 (Bitcoin): anchored in block 958853 (2026-07-20T09:11:53Z), 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/BRBMG9103692.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x27cc12fce7c2b550a674ada35ac8d4e8c157f251ba433634cd18e58f4f22fad1. Chain 2 (Bitcoin): anchored in block 958121 (2026-07-15T08:02:12Z), 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/BRBMG9300419.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x403cacf79e879c2d519cf18679e8cb9e28e732c1e60a635d8eac095f5664399d. 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/BRBMG9300433.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x9dadc2da61b93c9478b6808f8bfb2db166020a5ec6fa836c4d833c5eaf649e31. 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/BRBMG9600475.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x35ab1f2afd8f0612a687586dbd10f93ee273d094501464fdfd6dacd89428c07b. Chain 2 (Bitcoin): anchored in block 958987 (2026-07-21T09:04:56Z), 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/BRBMG9600479.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x6f4586fd5c3d9fb2868529e3b5498181ca5f2262db60bab1394ec531d5759e46. Chain 2 (Bitcoin): anchored in block 958885 (2026-07-20T13:01:04Z), 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/BRBMG9700741.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x274477dfb1d07798e21e2eb08d71b63c0cdf34172bb9471ce9e793dc855e0ccc. 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/BRSME9800347.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x929e357af868b464f10fc197c5a4358a3c7a356226d1d26322585714bd3c380d. Chain 2 (Bitcoin): anchored in block 956560 (2026-07-03T23:28:02Z), 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/BRSME9800065.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x2dff6a255e04de5d7df8eafc60137626b5fafa7a8ef88a899b98ddbd0c8996e6. 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/BRBMG9402314.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x733c254250c7bbf761ed9328e3fbff54a3aefa09ccee0c8a1f96f825b3b7fe50. Chain 2 (Bitcoin): anchored in block 958805 (2026-07-20T02:22:58Z), 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/BRBMG9700751.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x4046ab0be92b6e2108fd8d2d9901fae7e5a4196b4b39b63184dbf5f977d87be9. 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/BRBMG9402318.
Seja Mais Você / Te Amo / Pura Emoção / Minha Morada - Ao Vivo
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x039035765f37e107db129796313a1cffe980dad09c7c12403a306cbe6bbcb6c5. 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/BXTNP1800017.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xf47568904920a9a14f435dac861ff49134d49f7c5b6dff8ddfa215b6e30db81b. Chain 2 (Bitcoin): anchored in block 958561 (2026-07-18T14:22:01Z), 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/BXTNP1800019.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xeb2d34747d47c318aac5e42c8bf7cf509c1f83ff4024a8f8c9377468d94046d5. Chain 2 (Bitcoin): anchored in block 959065 (2026-07-21T22:00:50Z), 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/BXTNP1800020.
Gato Manhoso / Dona da Minha Sina - Ao Vivo
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xf2bf1872252977540ca33cee79f120d5b4d0b528ab9df78c0718de947b415166. Chain 2 (Bitcoin): anchored in block 958422 (2026-07-17T13:35:31Z), 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/BXTNP1800021.
Grupo Raça no Estúdio Showlivre (Ao Vivo)
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x3318c8f9b24fc8694a63c467ff0e27279aed1b56e27b83e38637b1e36d1e9a5a. Chain 2 (Bitcoin): anchored in block 958864 (2026-07-20T10:24:04Z), 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/BXSSW1803339.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x48745bcd2791dd857f55fd9f527d5f62bbb3d4db55067b6b88f14a7f880b2a83. 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/BXSSW1803340.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x45e856f0277a52be9bd439d0a82b48914d2929eda904c87c030d0101a945fa74. Chain 2 (Bitcoin): anchored in block 958611 (2026-07-18T21:24:44Z), 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/BXSSW1803341.
Feirinha da Pavuna / Razões da Calma (Calango do Morro) / Luz do Repente
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x1583a4836c3db257dbb24a4702b14e8bbd5849b112fb54018229bcb1a3df84f6. 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/BRCID0200141.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x04f41134e7fd4d28147c0be9f33363b370c3ed7b6acfa8f0ff08ff1d6d7dcd19. Chain 2 (Bitcoin): anchored in block 956304 (2026-07-02T03:55:08Z), 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/BRBMG9200042.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xfdef89b14bd3dccdb5efe3518570f4252ad994320aaf2413dd817424a2e5102b. 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/BRBMG9402315.