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 0xc2313d11f692bed7e7dc3be34cba031f72de3ca76a212cf4fe96921d145c46ee. 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/86342d46-c07e-4d2f-8ece-c6bdeef60b41.json and https://artists.proofprofile.net/proofs/artist/86342d46-c07e-4d2f-8ece-c6bdeef60b41.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 0xa9697f705e5768bad87713e2b9746b8456340e095e6aeaf797083334212f510e. Chain 2 (Bitcoin): anchored in block 958152 (2026-07-15T13:59:39Z), 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/BRUSA0600224.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x558564608177bca8e91308a2cb2920aac7773991ee34a2b85d0d12da083a2a63. Chain 2 (Bitcoin): anchored in block 958901 (2026-07-20T17:45:27Z), 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/BRUSA0401794.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xf747e9e0675b0722bd2303460f14e2647fe857e2e6e4b01929f1e44b3b70dd3e. 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/BRUSA0402449.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xfa7fbcf6c8b766a9f406f562228e0b987eefcd464f51ec49b77ef08d40d3f8fa. Chain 2 (Bitcoin): anchored in block 958955 (2026-07-21T03:03:40Z), 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/BRUSA0401792.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xcc24fee9f5fe6f3e58265b94c4e07b58c819fe5675b692f8d125f9892bd2bf2e. 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/BRUSA0401883.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x3c9d68bd1b3a38017282360861d1ede7dd1ca7fcb33333f9bec9468513ee90a8. Chain 2 (Bitcoin): anchored in block 958951 (2026-07-21T04:42:15Z), 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/BRUSA1700959.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x2a5602ad7c6b97f426e92202f7eaadcbab5fa480e3b9f50815c5097190585a36. Chain 2 (Bitcoin): anchored in block 958543 (2026-07-18T11:58:44Z), 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/BRUSA1700960.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x97e1c6aa3c6c96d8b53d55a4c38e2c9e02a1bca6071ca2bfa57ec078b605a6b5. Chain 2 (Bitcoin): anchored in block 958329 (2026-07-17T00:26:43Z), 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/BRUSA0401072.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x62367a27553295ee60ce327d42996a18e736ca7c80c5e7bdfa15ef13a35f31ec. 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/BRUSA0401073.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xcfbd25ba8c815e8fd183276a5bebd982f6e4c6f32636487aa062b08c7364e0ba. Chain 2 (Bitcoin): anchored in block 957603 (2026-07-11T20:26:17Z), 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/BRUSA0500116.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xa40f37a3045e4d2b7401ae02602f149a88c7d45223be5a02cebe8105785aff30. 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/BRUSA0400016.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x937ed681584b06781d84b7d955dffa4c296c65ed994b9617990e93a9153f10f3. Chain 2 (Bitcoin): anchored in block 958920 (2026-07-20T18:14:22Z), 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/BRUSA1702050.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x4033537d84a50baad2783db1df9d47cc8f8d59da6b1dac190adfd89caf99068a. 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/BRUSA1702024.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xffb52326f033ed556d7757d4c1697cb9e4814b7870d0d2be3774568ddbc6c764. 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/BRUSA1702030.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x3eb378793bddf3c065014aa6defa955337b8bf1ece4fb974a98c7cba517c7f76. Chain 2 (Bitcoin): anchored in block 958041 (2026-07-14T18:13:17Z), 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/BRUSA0801223.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x7351af867c2525690dea5ba0fbc4ad55f6bfea50b6e4dbf41dcbb017d349247a. Chain 2 (Bitcoin): anchored in block 957118 (2026-07-08T03:20:19Z), 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/BRUSA0401039.
28ª Expointer 2005: O Mehor da Música Gaúcha
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xf24569fcd99849f797d4e515ca88242ec9d584f6f158db3f5b850fe121f3aba9. 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/BRUSA0401788.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x8bde0e8d8b9ebfa6aa64eab3dc1cf0b02cf0ab92f11f5c2b2ad3599f21e2c90d. Chain 2 (Bitcoin): anchored in block 960099 (2026-07-29T11:30:20Z), 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/BRUSA0400011.
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 0xc9329c205a7a1e85284438ee0be2aeafaa0a8cac10e9732f5c21fc68b27fff34. Chain 2 (Bitcoin): anchored in block 960144 (2026-07-29T21:09:47Z), 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/BRUSA1700938.
CALIFÓRNIA DA CANÇÃO NATIVA DO RIO GRANDE DO SUL: OS MAIORES SUCESSOS
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x1b38a8615f10fa1fac999288278978d4818b2146d6a3e257272df91f24b500f0. Chain 2 (Bitcoin): anchored in block 960095 (2026-07-29T11:07:37Z), 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/BRUSA0500038.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xf093572eb12283b7d930a0078a493e9ab0f299b40b7d6dafa49955cb0129d304. Chain 2 (Bitcoin): anchored in block 960095 (2026-07-29T11:07:37Z), 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/BRUSA0400941.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x59a0b60634bbca7c8977da402ab504510e182512b235b49733e2d9b03baf3cb5. Chain 2 (Bitcoin): anchored in block 960157 (2026-07-29T22:12:10Z), 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/BRUSA0300613.