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 0x1bd84a6cb5e572712e1401db848fe0bd30ae1be11acaf0c3a9fbfa363cfa1f7f. 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/2b53d81f-ef7d-4142-91c6-fd7321c10279.json and https://artists.proofprofile.net/proofs/artist/2b53d81f-ef7d-4142-91c6-fd7321c10279.ots, run `ots verify -f record.json proof.ots` (https://opentimestamps.org).
Vintage Café Vol. 3 - Lounge & Jazz Blends
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 0x552acee9f6634c0c4020c572c003ea9972869e3e5da41329b51584f00c1a34b1. 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/ARF411000502.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x92f8474a698e4d55cc02ace3e3ac4a2554abfcdb285c1a316baaba0244e0e99f. 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/ARF411600126.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x0628ba1e8ae3c8eb2166367bd8f8913e8d8e119c73311096917ae6ff5398f646. 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/ARF410800427.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x6278ad7343ba44e8a53d2728efa2df0407ca6bb1c7f88c4cad7fd69dee9e529d. 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/ARF411500988.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xf7895163842aa3b23ffd206a8faf0328bfb5dcf108148d470774d3ea4926be81. 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/ARF410800992.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xd4385e56ebc42a215b2e00255fc707a1bb9f07591d674b303bdb5e71acb3d138. 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/ARF411501489.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x000af58e7c1047118f50ca16e34cf5094303b48324be81dcb7d2990c844b0583. Chain 2 (Bitcoin): anchored in block 953528 (2026-06-13T15:41:10Z), 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/ARF412300337.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xdf8b9628ff5a622c2a5d698a5194e00d42ae09f654273fa9ee9763d932bbf5c8. Chain 2 (Bitcoin): anchored in block 956894 (2026-07-06T07:53:57Z), 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/ARF412000168.
Latino Lounge: The Finest Latin Chill Collection
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x0628ba1e8ae3c8eb2166367bd8f8913e8d8e119c73311096917ae6ff5398f646. Chain 2 (Bitcoin): anchored in block 956351 (2026-07-02T11:38:34Z), 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/ARF410800427.