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 0xd6352bda38df627f573a582deaea0288692477ec76cc9e19221a6ef8458fa0c9. Chain 2 (Bitcoin): anchored in block 953742 (2026-06-15T04:47:56Z). Bridge: the canonical record inside this Bitcoin proof contains the same CopyrightID. Verify: download https://artists.proofprofile.net/proofs/artist/7524490b-b57d-4814-a4f2-b1081cf914fa.json and https://artists.proofprofile.net/proofs/artist/7524490b-b57d-4814-a4f2-b1081cf914fa.ots, run `ots verify -f record.json proof.ots` (https://opentimestamps.org).
Bølle Bob Og Smukke Sally (Original Soundtrack)
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 0x36e6c095f0ea0ef884603214661b5f0015795f16ffd675a6ccdf9261f30d4d25. Chain 2 (Bitcoin): anchored in block 956474 (2026-07-03T08:56:35Z), 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/DK92A6008401.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x581b4d252038c8d22bfce7a8d79b3e16016fec556ecca04f25122de19bb4acde. Chain 2 (Bitcoin): anchored in block 957874 (2026-07-13T15:43:57Z), 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/DK92A6008406.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x35baffaf37d4dd50aed63ff189b9648b03cfeeb93fcda27cd1b38e57c6c39957. Chain 2 (Bitcoin): anchored in block 958931 (2026-07-20T21:15:01Z), 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/DK92A6008407.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x65b91a8205b1f2dffa3b10a84fcb4d68bd704c0d979e737f59b2bed11f5408a3. Chain 2 (Bitcoin): anchored in block 958621 (2026-07-18T22:59:44Z), 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/DK92A6008411.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xfb3438b3af89b407547121f7ba21f82c7c6b5966d9f8d7fb40a1021255c33477. Chain 2 (Bitcoin): anchored in block 958211 (2026-07-16T02:15:57Z), 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/DK92A6008412.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x88754569fed253499a6a33e7da850bd184a7ea12a66c55aa8c97148dedea4d69. Chain 2 (Bitcoin): anchored in block 958341 (2026-07-17T02:58:20Z), 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/DK92A6008415.