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 0xb18e2ba750526addfb27e2ffffd727e214bb6ee17c3b37aae24e6218d10b8f47. Chain 2 (Bitcoin): anchored in block 953626 (2026-06-14T11:41:45Z). Bridge: the canonical record inside this Bitcoin proof contains the same CopyrightID. Verify: download https://artists.proofprofile.net/proofs/artist/27fb9b2a-6183-43ff-93de-46f37c2b855d.json and https://artists.proofprofile.net/proofs/artist/27fb9b2a-6183-43ff-93de-46f37c2b855d.ots, run `ots verify -f record.json proof.ots` (https://opentimestamps.org).
Down Under (Song for the Socceroos Brazil 2014 Fifa World Cup) [Brazil-Bahia Version] (feat. Jacqueline Gawler & William Barton)
Happy Ending (Final Feliz) {MPB} [Mandarin]
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 0xa9dc2cc6191ad93aa242c0518cec4c4d6d42ab82ba57ff05bb4dc4f2cd4d9440. Chain 2 (Bitcoin): anchored in block 956639 (2026-07-04T11:19:20Z), 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/HKG291601257.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x3d54fe477e8d8084e257387ad09da5db7b5b40c9315abc43271449262e1dc3ba. Chain 2 (Bitcoin): anchored in block 958690 (2026-07-19T07:14:39Z), 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/HKG291601258.
Brazilian Essence (Rio Edition 2016) [English Edition]
Upside Down (Flor de lis) feat. Joanna Dong, Jacqueline Gawler {samba, bossa nova}
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x83855a35dc1ee5a2fae067e50c5986cdee33a025ceac239bfc2ec51c116e95f3. Chain 2 (Bitcoin): anchored in block 957851 (2026-07-13T11:26:33Z), 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/HKG291601269.
Summer Samba (So Nice) (Samba de Verão) [extended mix] feat. Jacqueline Gawler {bossa nova}
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xd5251f1457efff1ddbe5378eaeb5e28f9441d1bd5d2544e66a3ec766e3934d6d. Chain 2 (Bitcoin): anchored in block 958300 (2026-07-16T16:14:30Z), 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/HKUM71400291.