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 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 0x9c122bb899c0ea9697dff78a848290714737c57bc3f06d219b69fe7d60caef57. 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/3a89d7db-ead7-4e51-af03-5e1a0b2fb8f9.json and https://artists.proofprofile.net/proofs/artist/3a89d7db-ead7-4e51-af03-5e1a0b2fb8f9.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 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 0xfc6b4d3e7e273339a2904c1251a3442e42235f88934b524efb6ffe17270a0ac8. Chain 2 (Bitcoin): anchored in block 956889 (2026-07-06T06:56:49Z), 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/BX05T2300003.
Não Vou Te Deixar - Rainha Monarca Remix
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xa8c5d43932cdea7a7eb74e95fcf62c153f707df9067b4726b234289acbe1468c. 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/BX05T2300004.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xf4107b2dba0801f8c81f0f7453438666d1a8bffce61fc0a04c5bb1cd32a27e43. Chain 2 (Bitcoin): anchored in block 959128 (2026-07-22T12:33:25Z), 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/BX05T2300010.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x1733b2cd71a02b3fb83816a737303e0fa30e79e02b3bd403ac7a30154c2eb43d. 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/BX05T2300007.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x167b427e75122b6747e5cd5b255b410d872a6585dc2821d9da942c47f1342dfd. 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/BX05T2300001.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xb50bc745a4e9378bc974d703bf7f7f2564ff3cfcd959f5824b00e4d2ef3fb0dd. Chain 2 (Bitcoin): anchored in block 960185 (2026-07-30T01:32:48Z), 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/BX05T2300012.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xfc6b4d3e7e273339a2904c1251a3442e42235f88934b524efb6ffe17270a0ac8. 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/BX05T2300003.
Não Vou Te Deixar (Rainha Monarca Remix)
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x167b427e75122b6747e5cd5b255b410d872a6585dc2821d9da942c47f1342dfd. 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/BX05T2300001.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x20690f19306bdc48d1fcd3ec590b3817eeabd7c67ecaaa7257ba053ed5f16d45. 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/BX3E51800003.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x05bc3c6201fbf78998f4c26c8a9341ca57d5d0250533893f5c9d98d818087e36. 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/BX3E51900008.