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 0x4903ceda21d4eaff6e2cc57a0c9a13cb4f7b4d4c4c8d052b6c5d74d1ce9730a2. 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/0ce0a6b9-7f98-4ce0-bee8-5de1b6a18d4d.json and https://artists.proofprofile.net/proofs/artist/0ce0a6b9-7f98-4ce0-bee8-5de1b6a18d4d.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 0xd908b15ddba2ec2e79da4957f98be44a87860eea0a8588a802c4d663ad9f6724. Chain 2 (Bitcoin): anchored in block 957810 (2026-07-13T05:55:46Z), 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/QZNJV2439596.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x2bf7a77f80e37ea377527c5f3efaf1d328b3adcff704870da992b16582fd0558. Chain 2 (Bitcoin): anchored in block 956790 (2026-07-19T23:56:30Z), 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/QZNJZ2487231.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x20b55b6ad698720f16638010ebb3a1550839c345c3a8f8040f2ff9efd06e92d9. Chain 2 (Bitcoin): anchored in block 958462 (2026-07-17T23:17:53Z), 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/QZNJZ2483076.
Bruna Tu Já Parou pra Pensar / Brota Aqui na Base / Tapa no Vento
Amanheceu / Sorte a Nossa / Pequena Flor
A Culpa Não É Minha / Ela Mente pro Pai Dela / Brota no Meu Setor
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x5d034853559d2d83f2162bc1c223205c31c38af28d2f826b19be474d0fea8cc8. Chain 2 (Bitcoin): anchored in block 956728 (2026-07-05T01:43:49Z), 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/SGW502244358.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x7464bdd1b89445d418f80594c51528f70df9e52710a52715be17d2178e4ce0ee. 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/QZW9M2419855.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x6160f6b19232d21fd7f35c9c1f5585100dae8a86036adad7ae14b1b93c7ce383. 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/BCV232400085.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xec3edc9d37040f8b6a96352eafb477efd24a15b1d785ed8f9715a8a50a59ace5. Chain 2 (Bitcoin): anchored in block 958256 (2026-07-16T07:22:18Z), 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/BKAKS2500057.