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 0x27f425a6099354981a5871840a2ec2f2ad84098ab34348e1f0ec3471f2414feb. 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/b7dd8578-1981-4166-9a16-3c3c56320f5b.json and https://artists.proofprofile.net/proofs/artist/b7dd8578-1981-4166-9a16-3c3c56320f5b.ots, run `ots verify -f record.json proof.ots` (https://opentimestamps.org).
Melodia Sentimental - Gilson Peranzzetta e Mauro Senise Convidam Silvia Braga
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 0xebfd5819837b3762db8355367b70d436dd0e5597fa35c89bd6baa06f7259a016. 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/BRFIN1600128.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xcf407953ce42aab8eef77cb8001d4bcda5e3ea64722d70b04ca2003fc2cca90d. 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/BRFIN1600137.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xbc3a124c91a11d52fce2800c520f00f1bdc7ba572b47de454e4551782d83e3e6. Chain 2 (Bitcoin): anchored in block 960448 (2026-07-31T18:48:12Z), 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/BRFIN1600126.
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 0xcdba7109b26f2d265f69805fb18dc5de7285303701ec665828d74a8347b4f7fe. Chain 2 (Bitcoin): anchored in block 960441 (2026-07-31T17:29:52Z), 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/BRFIN1600129.
Ilusão À Toa - Mauro Senise Toca Johnny Alf
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xc1102254284b736cb3b32550c27f3e022880d28e09fac36d6aa11f4e183d4c98. 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/BRPUI1800679.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x01c640ef22656c9a9d23ad30e6872bd80b96f55fd57aa655d3b423e9571b1135. 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/BRPUI1800681.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xd97600649e9dd887cc9456ea36dd601a695e4b557567613621d825de05fb51e0. 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/BRPUI1800685.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xd3590bb73be60ae9f6612f96a1a1ad14fc041ab2a0d089837bc613c30a0bd12f. Chain 2 (Bitcoin): anchored in block 957067 (2026-07-21T22:54:25Z), 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/BRPUI1800687.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xe2554b5d18a86048bc3f10105c9fe5f7574416cd4580c90b49deda1777bf570d. 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/BRPUI1800688.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x5ecee89c0466e941087b363fc132499d2995d7d37467844c1a56647cb12a22a1. 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/BRPUI1700001.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xe73f3a17da1f3b49fb3b477969b9d0581c009b83a203cad12ad04063fdd4ef52. 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/BRPUI1700002.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xa129ab2f93e8a37051a2867c49081ebeea74b4ea2147024cf0c25960bfa081e6. 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/BRPUI1700003.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x44f3da3a92f660b00875aefb9589b973ad22edbfe8e5b964eede068fbca04580. 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/BRPUI1700005.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x5faf6b3cac8adea64730dc7f3fdda76917e533d5c207389ed074abfcecced4fd. 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/BRPUI1700006.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x4c96e464694c6796d1a1b86d2ee5ead4303f7f8d8dcc7d3235f3c63bd1ca04c8. 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/BRPUI1800678.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x48ec81ddfddde3bcda1be955b248becb61e9a75148a57e7d23312e80fdb93d78. Chain 2 (Bitcoin): anchored in block 960216 (2026-07-30T06:39:12Z), 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/BRPUI1800680.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xa950a506383bd2024412e11f42b618ff592fbf5dddc1a37b5776355ea73d9c69. Chain 2 (Bitcoin): anchored in block 960321 (2026-07-30T22:27:30Z), 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/BRPUI1800682.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x0ec2d9d003dfc8a5fc14a4f3eae17bfea2a74d632975d05747b05b546555b88d. Chain 2 (Bitcoin): anchored in block 960448 (2026-07-31T18:48:12Z), 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/BRPUI1800683.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x6d9a3d5b5accdbf809c74a6c4f554af3fe04c9504b22857bbb48567646746706. 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/BRPUI1800684.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x273c68522e464f1949dd6bdcf6b407905f24bd6cdfd969d8d9b120251c68234f. Chain 2 (Bitcoin): anchored in block 960327 (2026-07-31T00:26:26Z), 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/BRPUI1700004.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xbe1274aeeda389ebf201f07af781a8dd0b0454843a576d7004894b7e499c8526. Chain 2 (Bitcoin): anchored in block 960222 (2026-07-30T07:48:45Z), 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/BRPUI1700008.