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 0x141572e7573aa05a8476a2e7fbfe2c645a3b04fe8479db0b6697a35f7aa7d5cd. 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/8ecf34c9-6a66-4c3f-8b30-8ad6e9451534.json and https://artists.proofprofile.net/proofs/artist/8ecf34c9-6a66-4c3f-8b30-8ad6e9451534.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 0xae5e192e04c148abc15e734dfa9c7351e3c29900c7a747e6c7ef6bf0bda59cf9. Chain 2 (Bitcoin): anchored in block 958728 (2026-07-19T12:24:55Z), 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/BRSME1701739.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x95a500a7994e6873c3028f03ab19d2f84b8e96d7be6716d17e58073f7c1a342e. Chain 2 (Bitcoin): anchored in block 958194 (2026-07-15T20:32:27Z), 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/BRSME1701741.
Conversa Fiada (I Didn't Know I Loved You)
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x014de7bc655953da75808c26a542b14fc5a97eec0b66a1cedc71e411a11ac597. Chain 2 (Bitcoin): anchored in block 958514 (2026-07-18T06:54:37Z), 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/BRSME1701744.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x3ba6e6bf991215513d0dd6dcd12458cbf3892c63b6de73aaf1ce35cb8cba8d8b. Chain 2 (Bitcoin): anchored in block 958996 (2026-07-21T13:39:19Z), 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/BRSME1701745.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xde8ae7de5e7749401b928349febf2c6ee6cf3e36a56d8118461dd2506867e3f8. Chain 2 (Bitcoin): anchored in block 958721 (2026-07-19T11:02:33Z), 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/BRSME8300024.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xfc98bb9c8f31a6f2ac0ecc637f5936c5ddda46840e37126d101367ddfc59b3b8. Chain 2 (Bitcoin): anchored in block 958428 (2026-07-17T15:15:14Z), 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/BRSME1701752.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xe34c0f9f2b9da8ca7d96b639e44d60c7b68f0e233227840291ccaf8d8a1b925f. 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/BRSME1701754.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x41885fe0170565fd628cb6e9d9ce8c8ee3ead0fa5f85da26c4ab9b4fbdae3679. 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/BRSME1701759.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x62a9cdcd4cf3470cc3e3d109f8cf9949832169e681bb4e497a42c55025664c76. Chain 2 (Bitcoin): anchored in block 956711 (2026-07-04T22:48:52Z), 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/BRSME1701767.
Rádio Taxi no Estúdio Showlivre (Ao Vivo)
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xbd4b57e94e3723460050509a26ddf1216464bee04bd0c98376030f22af631b6e. Chain 2 (Bitcoin): anchored in block 958985 (2026-07-21T08:39:15Z), 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/ES71G1635309.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xcf5035944ea0e89aff5df20e9cdb22407dd771a0edff59f8f4e49162e3fb8c82. Chain 2 (Bitcoin): anchored in block 958951 (2026-07-21T04:53:22Z), 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/ES71G1635312.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xfc997a62cb402175ce7b34c04216c96a4a504baed7f6f8bb5a303c4f5e6131d0. Chain 2 (Bitcoin): anchored in block 958631 (2026-07-19T00:50:09Z), 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/BRTSC2000054.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x88b872ff789e23d62033ed4f2acf89d860893c80697bc6a65271d24488bfc9b4. Chain 2 (Bitcoin): anchored in block 958340 (2026-07-17T00:53:26Z), 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/BX23Z2500001.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x7f05b155f3ca5ba65f163abb9b42a244cd10f0cb1ca49aeb09272d2d0690b691. Chain 2 (Bitcoin): anchored in block 958194 (2026-07-15T20:32:27Z), 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/BX23Z2500002.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x0428a078b1e1efa68e91a824fa9a102d03bbcc3a5b1032c3e026278beef9a1ff. 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/BRSME8300004.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x2f8ed20a20528d927c5bf81e8b5317334615815617785db402a571cf790a4dcf. 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/BRSME8100037.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x102cf8e896236405a02a0a21704e940c44ccbac6312eefe100e338ec5294f022. 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/BRSME8100033.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x0428a078b1e1efa68e91a824fa9a102d03bbcc3a5b1032c3e026278beef9a1ff. 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/BRSME8300004.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x7fa32d0ac677b48c38306184ecc9cc86b2dd0db2c0aa88e9074fc92644a6073e. 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/BRSME8100041.