1. Compute SHA-256 of OTSCanonicalRecord value → must equal OTSHash 2. Open OTSProofURL → extract Bitcoin block number → must equal OTSBitcoinBlock 3. GET OTSBitcoinBlockVerifyURL → block must exist at that height 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 0x9d55f3f4f9f4283854fd86abc59f934beedf537f829f7067f12f29f7137ec94f. Chain 2 (Bitcoin): anchored in block 953886 (2026-06-16T04:37:45Z). Bridge: the canonical record inside this Bitcoin proof contains the same CopyrightID. Verify: download https://artists.proofprofile.net/proofs/artist/0be8196c-7b20-4287-8291-45ff09364a4d.json and https://artists.proofprofile.net/proofs/artist/0be8196c-7b20-4287-8291-45ff09364a4d.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 → block OTSBitcoinBlock must exist at that height 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 0x173d2dc0e68eb80602b4a9d038832234d04c3249f1b94530cfac7db0221e6be8. Chain 2 (Bitcoin): anchored in block 957120 (2026-07-08T03:22:41Z), 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/ISRCQ9239860.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xba521034b075d1f91c5c757679eede47ef7ac46ee072bad77931eff5552e9387. Chain 2 (Bitcoin): anchored in block 957118 (2026-07-08T03:20:19Z), 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/QZW9K2391567.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xde4241f82e88bfebe80d391ef5295561ac50f2ab3516d5a4896a3cc254ea6a2a. Chain 2 (Bitcoin): anchored in block 957120 (2026-07-08T03:22:41Z), 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/QZW9K2391548.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x9da9c7217bceb150892ad1e876c3d18091810ebaeec0ec3d23b18d85cffcccb9. Chain 2 (Bitcoin): anchored in block 957124 (2026-07-08T03:53:27Z), 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/QZW9K2399190.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xd66f004423d4fda121c25c1c2f016f8716a5457c4cb7459cd8624e9e8898b14c. Chain 2 (Bitcoin): anchored in block 957120 (2026-07-08T03:22:41Z), 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/QZW9K2397218.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x9e92479cec3c4248b8509a3e7ca14a9e91a57dcbd77c1e9da8f27e25389b9324. Chain 2 (Bitcoin): anchored in block 957124 (2026-07-08T03:53:27Z), 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/QZW9M2321895.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xc55011277e11649a0e28700ce225e8d4a8619f5db1be248be800ab48c7e04a43. Chain 2 (Bitcoin): anchored in block 957145 (2026-07-08T08:56:20Z), 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/QZW9K2399192.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x9a6f4cb14d82d42709cce54f146ff5706d105fe6aa3d1e00072cbf99aa3bbc45. Chain 2 (Bitcoin): anchored in block 957198 (2026-07-08T15:54:54Z), 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/QZW9K2397324.