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 0xf097d104ba2f903962d07dc914cbc8476acfbe1e557ece097b2b7523825ea9a7. Chain 2 (Bitcoin): anchored in block 954066 (2026-06-17T08:11:48Z). Bridge: the canonical record inside this Bitcoin proof contains the same CopyrightID. Verify: download https://artists.proofprofile.net/proofs/artist/6d921f31-781a-4909-9df1-62a5fa6f0020.json and https://artists.proofprofile.net/proofs/artist/6d921f31-781a-4909-9df1-62a5fa6f0020.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 0x83651d179c4c70d32dbe2f1ba6489cf98f0a70d19cb4ffc6d5236f30ca4c65f4. 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/GBIOE2300002.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x8b2a15b97c01d7ac781d006db6f97cbb5a06a116917bc09d4db045ce721f84c6. 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/GBIOE2300003.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xc220b56b01e479a895aa3ac4ed25c5d66dcfa51fb9ae96f0dff19afbd88ce1df. 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/GBIOE2300004.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x959b02ff9610ffcc9d9fbb7c156936e7a388394cd33b5b6e72ceedc8f684d6fe. 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/QZFZ32498049.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x741e5befcbf779208c467dd19384d0bd21c1892fa79d5408c442a1314fd90fc3. 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/GBE911500002.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xedc915e9026ae3d7bbd6994586e08edad3bfb81ae25b0ed7c66c3aa101446b13. 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/GBE911500003.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x79934203dfda241fe2ce1e5db39ba354371a47294cb1abc201ac9e43d6d9b407. 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/GBE911500011.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xfda643e4831931bb431571528bc842f37a705d22fea4623abb30c27140457f97. 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/QZFZ62413051.