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 0x23c87d12f3b2bb1ff665b50d0485ccd3586e8a86a1cff11bb77720c4fd5eeeb5. 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/e8d10274-a328-4c75-880b-3a82cf8c0ae0.json and https://artists.proofprofile.net/proofs/artist/e8d10274-a328-4c75-880b-3a82cf8c0ae0.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 0x09861ee7dd3d99a793ed30837083d28ed3eb3239a50113129c7bef3ae709b202. 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/BKP3E2500008.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xd27f0bee7ce03e8b7eef568deaf24b90b7c7c3b316a6da0dc23adafa9529d09a. 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/BKP3E2500007.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x4938a5373f9bbbab46813d5348cf130027a08061fe1627bb4bb82f1194aa9e28. 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/BKP3E2500006.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xbb485b7ebdde1f4805e8b116935dad4f6f23614d96c6fde2ac3cd60fd7459d04. 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/BKP3E2500005.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xca97e1c22cfa14df85176edcb9f99cf3cf2d3b5726984e864b6b6f068eb0012f. 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/QZZEB2488947.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xef0616762fdea88ef7a8cba496d12fc2771bd1887f6123be241177068586a24f. 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/BRUM72400914.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x658ccae2a7311079c2d7e5e61a017918025833ffa18c8e8ad63123f2839f7b51. 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/QZHN72377968.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x2fa165bd427a8a1b89bd4902c62fbcbcf07774144e2194dc35daaee983b0a43e. 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/QZTBD2460440.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x074a2dd0e41a39cdb76c85aabdc9a9bf9aa65da60690a4e74a547e202cf176bc. Chain 2 (Bitcoin): anchored in block 957061 (2026-07-21T20:53:32Z), 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/BKM2L2400177.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x47088a9d991bec8c6fb1dc1071a612b666d49139bcf03348194a284ae9d772c3. 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/BKP3E2400009.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xb5cae3607ece64d7f862f2f05661b670c15d0259f6fe355cd35b8fb20b4d5cf4. 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/BCHHU2300008.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x458fa37b2f962c9dc20d31b900c207b2300761d16919092b850748a42b251b36. 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/BCHY22300041.
OUVIU FALAR DE MIM (Quer ouvir o plof plof)
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xc945879a3766a20b2c05c901ef7e2d6a92e9e9113fa4281f5dc7d838f7d149b9. 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/BXG212300005.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x4cd8dde0f6c2ae716cca2b1242aab1f255dc10508401d01d06edf80c3b0a79cf. Chain 2 (Bitcoin): anchored in block 956351 (2026-07-02T11:38:34Z), 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/BCHY22300006.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xef0616762fdea88ef7a8cba496d12fc2771bd1887f6123be241177068586a24f. 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/BRUM72400914.