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 0x873831e7938a906068a1328ed27737d4fd693a13fc00d54074e41425b1020812. 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/fb807d5a-a7d7-49c9-ac40-627b1f6b6ee8.json and https://artists.proofprofile.net/proofs/artist/fb807d5a-a7d7-49c9-ac40-627b1f6b6ee8.ots, run `ots verify -f record.json proof.ots` (https://opentimestamps.org).
Recairei - Os Barões da Pisadinha - Versão Inglês
Zé Vaqueiro - Tenho Medo - Versão English (Radio Edit)
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 0x37e4f72eee42d41342e8817e1ba363979fff399bc2e468f5b25ed93df2047921. Chain 2 (Bitcoin): anchored in block 958091 (2026-07-15T03:17:03Z), 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/QZFZ52164461.
That's not what I deserve (Piseiro Inglês)
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xbe604b8c1c6efc6e11ccb1afae16cae5ed71f2b426fccf764185d30eae2b2f16. Chain 2 (Bitcoin): anchored in block 956857 (2026-07-06T01:26:17Z), 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/BRSME2101168.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x58e989482be7c2e1a015737c083e0add849adce40864bdb029693ce6523d5dbf. Chain 2 (Bitcoin): anchored in block 956422 (2026-07-03T01:01:38Z), 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/BRSME2101173.
Sentimento de Vaqueiro (Eu Acho que Não) - Versão Gringa
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x3f0c45973c91d83ebf6dab3a40ed558b60742287f09ac37f2d2d03743ff9c691. Chain 2 (Bitcoin): anchored in block 958622 (2026-07-18T22:58:55Z), 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/BRSME2101172.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x984cdc04f66f5de72c448f1aa7f3ce584697d67d8884c93d69311d9e08ca873d. 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/BRSME2101169.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x8b81a8724a00b6a851858bb4c138e374ca7eb32706bf9865a43971192227e34a. Chain 2 (Bitcoin): anchored in block 959144 (2026-07-22T16:56:19Z), 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/BRSME2101175.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xd277468912cb29e0b447b2362a2609e15c48d0ceecb287cdd6c7d6ce015e1ea3. Chain 2 (Bitcoin): anchored in block 958792 (2026-07-20T01:31:39Z), 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/QZDA72201444.