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 0x655a22e3aaebec4fc3a7e2a4dd166e5bc33547651d0ec27164d3e4003cac85b6. Chain 2 (Bitcoin): anchored in block 953742 (2026-06-15T04:47:56Z). Bridge: the canonical record inside this Bitcoin proof contains the same CopyrightID. Verify: download https://artists.proofprofile.net/proofs/artist/90c6f6bc-3825-4314-a1bf-b481402abf94.json and https://artists.proofprofile.net/proofs/artist/90c6f6bc-3825-4314-a1bf-b481402abf94.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 0xd95671c46d621f7dced649eeec45db7d72edb95778c54c4949511c9121a5ae99. Chain 2 (Bitcoin): anchored in block 957120 (2026-07-08T03:22:41Z), 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/LBPLA1500191.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x5dce647b2b006fc81b81116f9c690eb0efa681e078f5137f46ad925e62389fd5. 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/BXSVC1900809.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x9be3b7240d44015133e15d0da1e780a30dfbad0ea624adb21e7c0744bee8c858. 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/BXSVC1900799.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xa5255f80d9a577e4bc3868da381be4f9c70f5903ed5d7c93569cf2219cf14450. 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/BRKUA2000014.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x8c550e48ff5bb4e15d6fba2c3c290bcfac916edd0022b53c73b55455dcf29565. 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/BRDPA0400030.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xdbf3c257ae9ca1babd03c98208de6dd39ac358056500e3cbe59b7b16b49215e5. Chain 2 (Bitcoin): anchored in block 957120 (2026-07-08T03:22:41Z), 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/BRDPA0400031.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x16a565c3cbe43f993c29a18723cf528b37b75088ede90eea7773cc2f7a30877e. Chain 2 (Bitcoin): anchored in block 960273 (2026-07-30T15:42:38Z), 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/BRDPA0400040.
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 0xdd4bec547bcabfbb718beac96f63b369ed45fa84b82b23122ffe3cf5518cf096. 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/BRMCA8100196.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x81bc1dbc2064e2f491925551378d03a714e2122b8697f1ae9ba787e9660ade97. 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/BRMCA8100255.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x8f534302bc5cefaca82d827db72f3676b14cff7255fb46d173872f9a4ea1e309. 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/BRMCA8100212.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x6b778660b4857bd1ae00014cacb613322d252db8438e41c8d7e39d1eac708c7b. 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/BRMCA8100037.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x9170415f37b0ce0ddec32c7b13a6b8eac6395264a874e9ebe1017fbf01c55072. 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/BRPGD8100008.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xa6511e35ff82d6452835d6a340385ecb5f8d512a9864f1acbdcf13b30211ade0. 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/BRPGD8100003.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xbb116e263e8210efef344117ceed463b0d080f6722995bffd9f4dbdcc5cbaab0. 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/BRPGD8100059.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xba2ffcf0748fcab0d67b38231485b1d5b27ee4b3e33a6d3561182fd0630929d7. 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/BRUM70500227.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x5c5771ea12ffb32b48aca462ac48f15667c447cc481f5b95f535ca8c23ce16ef. 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/BRMCA0500280.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xd00fae3fc2cc8f89d009d19ae2e652ab0c320fc79bbd420ab90b77c0eeb7929a. 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/BRMCA8100310.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x90125eda58158f1a1409cb85f0929aa5ea40f3932ecda679a1e9d4343b0f7776. 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/BRC3W1800001.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x936f388ba871cd10ac060e5e83c038a4626e896ae87524fe6638c3c8ac5ea4c5. Chain 2 (Bitcoin): anchored in block 957124 (2026-07-08T03:53:27Z), 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/BRC3W1800010.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xc7265b0c3661c7d8c3ac43f812fced0338825cf3590facb4b35df6eca537577a. Chain 2 (Bitcoin): anchored in block 957122 (2026-07-08T03:39:04Z), 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/BRC3W1800011.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xf24af8bbb805a8fb300fdddb12202a25870207160b92c8811de34e73f28217bf. 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/BRC3W1800013.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x2343c95b99c060e20b06b0b614455692c05156fa39c7b26e2c627a44ea1c9e13. Chain 2 (Bitcoin): anchored in block 960497 (2026-08-01T02:22:04Z), 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/BRC3W1800007.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xd535729e19d6f77f4c8ce7e8e827d61c94bef97146bacf69139aab877141d427. Chain 2 (Bitcoin): anchored in block 956349 (2026-07-02T11:34:59Z), 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/BRODO0300014.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x52e599e46ced692e9405c0b9b16112e947bb3902c4b69badee6bcaa683ea2073. 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/BRODO0300006.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x28c84e681820a25d171b5a0de7ee375307ca1081054ac9352673e0c48117f1b7. Chain 2 (Bitcoin): anchored in block 957120 (2026-07-08T03:22:41Z), 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/BRODO0300013.
Dois Gênios - João Bosco & Milton Nascimento
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x9265696e1c411fb2231c4631d5b9e11d84cef52990ab808f6780dd3a5e76e9cb. 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/BRWMB0900534.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x16eca3bf4df6a2228b0534117e242bfc17f27f3fca2d1142ba0a9f9b265965f2. Chain 2 (Bitcoin): anchored in block 957124 (2026-07-08T03:53:27Z), 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/BRWMB9801774.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xaee1428476d9f3e561e5e128573431e9fa837c8c553065821e4e0493a119237c. Chain 2 (Bitcoin): anchored in block 956312 (2026-07-02T05:09:12Z), 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/BRWMB9705748.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xf893a2d456782da14ee6e7c813573cd8f50913c0776137ce2c3b9c59007556f9. 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/BRWMB9702883.
Tao do Trio Canta Cartola (Rosa Que Te Quero Verde)
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x5a6efa69a6e21776bde8b02c59b1715f68b31e57b3b07ca4595ba224f592743d. 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/BRGPA0800023.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x73312a5f6d9c6ab7e69e6e46cf49bc67829dae5870b40cda512ad08667c972c2. Chain 2 (Bitcoin): anchored in block 957120 (2026-07-08T03:22:41Z), 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/QZGLS2170545.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xd01a8708833ec83f3b88b30b32047f462be68c47720c811bee3b7e879efe30ef. 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/QZGLS2170539.
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