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 0xf36c8ab75a24660e60883cd54932c508cc026e053aa4fe1f7bf32043b180f104. Chain 2 (Bitcoin): anchored in block 954693 (2026-06-21T11:50:32Z). Bridge: the canonical record inside this Bitcoin proof contains the same CopyrightID. Verify: download https://artists.proofprofile.net/proofs/artist/e8c63cae-d66f-4f38-8c45-e1b82bac1a61.json and https://artists.proofprofile.net/proofs/artist/e8c63cae-d66f-4f38-8c45-e1b82bac1a61.ots, run `ots verify -f record.json proof.ots` (https://opentimestamps.org).
Tá Tudo na Palma da Sua Mão (Rap da Tabuada)
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 0x85781a193250744f90cf785ffd5aece7f5c0441cd6b5926f706c3e493eb35f45. Chain 2 (Bitcoin): anchored in block 958885 (2026-07-20T15:48:45Z), 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/BRBID2500001.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x0b605c3620133dd7f5ef72c84410a7035bd2f88d11adced86714d20ebc5f3665. Chain 2 (Bitcoin): anchored in block 958846 (2026-07-20T09:59:26Z), 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/BRBID2500002.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xf7836233d7950a5e3b93e4a48ae5ac1556446b5b687b48ba59218405e62ede84. Chain 2 (Bitcoin): anchored in block 958853 (2026-07-20T11:34:55Z), 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/BRBID2500003.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x005dad40a3fd6e52706b847e1aebb8eba21ff6a493b19830eca91df0a5eb446a. Chain 2 (Bitcoin): anchored in block 956772 (2026-07-05T10:01:46Z), 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/BRBID2500004.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x8a0545dec8c1a4cb661297391e765b5b65840cd1418ad268c710df6dde83b2c8. Chain 2 (Bitcoin): anchored in block 956822 (2026-07-05T18:48:28Z), 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/BRBID2500005.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xbef976621e4c822bed16d2cdccccfd06b23e7afc9c7ddc8be71f513881cc50ce. Chain 2 (Bitcoin): anchored in block 958771 (2026-07-19T21:42:53Z), 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/BRBID2500006.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x969f34622ad26767b66a28329ae41ada076e55a214992ac250e10eea299028f1. Chain 2 (Bitcoin): anchored in block 956822 (2026-07-05T18:48:28Z), 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/BRBID2500007.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xd025244e405054ec9ccee6bb0743cf29ff2d96913644bbf3a0563430c05e7d9c. Chain 2 (Bitcoin): anchored in block 956776 (2026-07-05T10:59:37Z), 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/BRBID2500008.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x4595377b8d00dd03e33cf66d2511944a4bf67ca42e35ec9642bb51f0571f802d. Chain 2 (Bitcoin): anchored in block 956738 (2026-07-05T04:47:21Z), 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/BRBID2500009.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xfd788d439eca156ded126adaa5e5f1176ab8fa46eb18139287f952ea88c61e14. Chain 2 (Bitcoin): anchored in block 958913 (2026-07-20T19:48:55Z), 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/BRBID2500010.