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 0x82094a9c44f4b6f61a6fbd8975e94135479b7b6a05d8e8c52cd21c67c7d50f47. Chain 2 (Bitcoin): anchored in block 953408 (2026-06-12T19:28:13Z). Bridge: the canonical record inside this Bitcoin proof contains the same CopyrightID. Verify: download https://artists.proofprofile.net/proofs/artist/f0397f6f-6f1c-4e73-be91-dda77dc6cd7b.json and https://artists.proofprofile.net/proofs/artist/f0397f6f-6f1c-4e73-be91-dda77dc6cd7b.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 0x5a405b03fe236538ec3361399dc5848dfdc5153f17f10ad56890f88af9f561f9. Chain 2 (Bitcoin): anchored in block 956500 (2026-07-03T13:55:21Z), 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/UAMB12211002.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x8812949aacdecbf3cbc2b82b9bdd1f714743b11f640f719caef6075bc07efe1e. 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/UAMB12311001.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x8268930ed5fe197700dafd5a5e4aedaa092651f1aa2691ec320bedfec62e34b1. Chain 2 (Bitcoin): anchored in block 957676 (2026-07-12T08:20:25Z), 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/UAMB12411002.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x96c533329e81da4d66b48d7d7448fba815fb4919cc3d7263de53f0c32d9cce82. Chain 2 (Bitcoin): anchored in block 958063 (2026-07-14T21:07:34Z), 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/UAMB12411005.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xf11bc05547ecbd6506af4be67349540be0555ff33253d2af975c7b435cd16b74. Chain 2 (Bitcoin): anchored in block 956656 (2026-07-04T14:03:39Z), 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/UAMB12511001.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x2a290678bdfe62e6cee8e214d548bef706caaca7ec8af7f48c8ba77171ea7194. Chain 2 (Bitcoin): anchored in block 956422 (2026-07-03T01:01:38Z), 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/FRX452501611.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x77e80caf3d8d55f9984cd92afdb2179b0bcf7140162c6370e82f817d2c6e663c. Chain 2 (Bitcoin): anchored in block 956545 (2026-07-03T19:59:51Z), 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/FRX452501612.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x98fac581d138164913e972fffe4aab9bcf70f406de0692a99eb06b10dda9c8f5. Chain 2 (Bitcoin): anchored in block 956545 (2026-07-03T19:59:51Z), 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/FRX452501614.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x7fba30e9f063b3dc66ad680712cf20710491e0f6002c83ce49eaa5bb61611201. Chain 2 (Bitcoin): anchored in block 958526 (2026-07-18T09:09:53Z), 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/FRX452501616.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xf3472f8ab392ef03a6993891ea44b957c242a60fee14f3d4ebff9997c67ee470. Chain 2 (Bitcoin): anchored in block 958388 (2026-07-17T09:14:21Z), 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/FRX452501617.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xe1fc9921b388ef489943b8e7e8896e7dd60539a4f4c48da4335f45b95a0a4501. 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/FRX452501618.