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 0xaa9dcf3258ac39bb888dd726494051e247053800c443fe1b4a75818978e47296. 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/3fa01219-4e03-48a7-9e8f-b02ca1afbf6e.json and https://artists.proofprofile.net/proofs/artist/3fa01219-4e03-48a7-9e8f-b02ca1afbf6e.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 0xd605adeff04def60530df64231d363152f53feac65b5cb729d72d6ee2f1f55c3. Chain 2 (Bitcoin): anchored in block 958480 (2026-07-18T02:58:58Z), 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/QZMEN2193216.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xd605adeff04def60530df64231d363152f53feac65b5cb729d72d6ee2f1f55c3. Chain 2 (Bitcoin): anchored in block 958594 (2026-07-18T18:05:01Z), 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/QZMEN2193216.
Cremation, My Final Hope for a smokin´ Hot Body
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xf2859eb37e0fa1ee26ad5847880a4c932fff47a65fbf903b6847bc74c1c9a632. Chain 2 (Bitcoin): anchored in block 956576 (2026-07-04T02:06:47Z), 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/QZNWZ2195445.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x23f87ebec4f7f2fdf66a331aaf4ef0177a718ece248b8bd91a4fd8d7e068897b. Chain 2 (Bitcoin): anchored in block 958316 (2026-07-17T02:06:15Z), 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/QZFYX2246611.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xb744abfc040c8d588d93ff82b50894663b914be615516f22fda146dc2dfef7da. Chain 2 (Bitcoin): anchored in block 958504 (2026-07-18T05:41:32Z), 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/QZES82297300.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x0211a36f8b3239f93836eb734e3e2f0f42c74bb5639667c2f84bc3b70fd80219. Chain 2 (Bitcoin): anchored in block 956826 (2026-07-05T19:27:56Z), 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/QZES82297304.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xd7e5506cbcdda41514c277ba1f6ff5d41945c2ad6f20ee4510b672aed332cbc6. Chain 2 (Bitcoin): anchored in block 958340 (2026-07-17T00:53:26Z), 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/QT6EB2500643.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x15b96f9c4fa3154b783db4b56edd25fb03a8c294b7bf70074e86bad79671308d. Chain 2 (Bitcoin): anchored in block 956440 (2026-07-03T04:03:57Z), 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/QZTBF2336255.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x15b96f9c4fa3154b783db4b56edd25fb03a8c294b7bf70074e86bad79671308d. 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/QZTBF2336255.