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 0xffbed19c99bcb1e0869a5e12fdabd16897c9a08cfea21a814ef77c61adca4daa. 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/eb28fd12-f17e-4a83-b220-dbf8da3d2539.json and https://artists.proofprofile.net/proofs/artist/eb28fd12-f17e-4a83-b220-dbf8da3d2539.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 0xf56dfc34ac4789b6ed82f4116005fade081bc1705fa1ed56c3d7d5dd6e30f86b. Chain 2 (Bitcoin): anchored in block 958224 (2026-07-16T02:28:43Z), 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/QZ5AB1739795.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x5a45598d512b7d1ccbd323abe381782db535982dd6f0b9090a9fbf5965b63f96. 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/BX0LS2400001.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x45a9600dfa667388c9a1f73f003c989577fdb394cc41d3ccd379474592f54703. Chain 2 (Bitcoin): anchored in block 958110 (2026-07-15T06:57:12Z), 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/BX0LS2500011.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x6b6c1e687d3e2c8adfd64f4662e541a6508d9ca1f5dc005da341153f1defee81. 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/BR4JO1900003.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x141bedb853b9a3ff08fa148289c50cb8e206fb3efcca74ae049069c2ddb267cc. 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/BXGJJ1700008.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x7e29b6d6529a67b65a99ec6c78ce5981a271b130a1a48e519ea070d8923dd58f. 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/US7VG1869477.
Alexandre Magnani (Ao Vivo em São Paulo)
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x51a09db8efd83d3417f145b343623669701616db6e0d890400bb47b3051569e8. 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/BRXGX2000004.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x51a09db8efd83d3417f145b343623669701616db6e0d890400bb47b3051569e8. 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/BRXGX2000004.
Messias (feat. MN MC, Dona Kelly, Sarah Renata, tiago arrais & João Carlos Jr)
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x46c1a28f50bc86c3934fd0f44e22054ff4268c301bfec3c93985f25f087f168f. 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/BRSME2201757.
Messias (feat. MN MC, Dona Kelly, Sarah Renata, tiago arrais & João Carlos Jr) - Playback
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xcc96fc0004c20e08ac3c9194edf10e033543d542d09783e2c6cbaf01b03fc7bd. 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/BRSME2201773.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x3388e2dd0bfa920b68b9f1f6c251a1c6c9d130a70f1861dd2a5dcfedfa67e156. 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/BR4EA1600003.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xcba199c5372c461827ff43453e714dfb2af9a31e5fb5b3ec7b1bc15aa1d92d55. 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/QZHZ52027181.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xb9210a2c4c3fccb5c76188c05bddc49363fd9393e2c6d26fa7d750aee07b7526. Chain 2 (Bitcoin): anchored in block 960264 (2026-07-30T14:36:16Z), 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/BXGJJ2000006.
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