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 0x249f01862bec3a5567a43a15f84649b40ac6fc960859a07c43a2ea0682063269. 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/74dae9e0-e069-4dc9-aba6-d7d869535e42.json and https://artists.proofprofile.net/proofs/artist/74dae9e0-e069-4dc9-aba6-d7d869535e42.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 0xb4a62310210dc62ec38162a4a033f3c5c0baa469a97ac227013c6c1e60c4d5b9. Chain 2 (Bitcoin): anchored in block 957891 (2026-07-13T18:21:04Z), 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/UKGP91600006.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x19f1276b60aa6a1273223884ce398a16bf7de70b972f7056dd2ec820414f2b54. Chain 2 (Bitcoin): anchored in block 956375 (2026-07-02T16:51:38Z), 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/UKGP91700009.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x38d222f23eea704bebb2cbf5299e54b956bd3f99b1b4e2b00ada48a228670945. Chain 2 (Bitcoin): anchored in block 958690 (2026-07-19T07:14:39Z), 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/UKGP91700011.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x42e08546445c3707ca9ad81d57b8baaeb1e3a2ba638c3f4b1dddee294220820d. Chain 2 (Bitcoin): anchored in block 957891 (2026-07-13T18:21:04Z), 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/UKGP91700013.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xe76552e6ede9ed1f4d3b425bbd4ec28964247050c78ce50f9b3e22d737871422. Chain 2 (Bitcoin): anchored in block 956375 (2026-07-02T16:51:38Z), 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/UKGP91800003.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xe94bcd3f56be0d10d83236cab0872454ab35f45d49ae6b5a09ac7587544a67b5. Chain 2 (Bitcoin): anchored in block 958535 (2026-07-18T09:42:49Z), 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/UKGP92000006.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xc031c04d018cd20d853c219ebacb95b1dac460ec20746fc326d5e88e8276f8d8. Chain 2 (Bitcoin): anchored in block 958514 (2026-07-18T06:54:37Z), 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/UKGP92200002.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x7ad30bc401655e12ea7b29bf13b6355abd8b09a370d2879a5f1cdb2a86e30144. Chain 2 (Bitcoin): anchored in block 958846 (2026-07-20T10:37:21Z), 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/UKGP92200003.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xe3f0ab90cbfda7ec847fe3eb98212c7f0616bd0277c428b555a8072a861680b7. 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/UKGP92200006.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x1bd77fbb6f4a1ca74fbd1cc6ef60b7b9469d84f2175d85b30e5156f666438bbd. Chain 2 (Bitcoin): anchored in block 956856 (2026-07-06T01:25:57Z), 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/UKGP92400002.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xbdade8c8053bd85af761efab1eafa31372aee0de9eeb98452b45b59de079ab7b. 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/UKGP91800001.