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 0xd376e5c36b6a4f9a5dc9bfc08d0ec00fc8fd411a1210496d832e9240ce14a610. Chain 2 (Bitcoin): anchored in block 953423 (2026-06-12T21:20:00Z). Bridge: the canonical record inside this Bitcoin proof contains the same CopyrightID. Verify: download https://artists.proofprofile.net/proofs/artist/7e5138ca-bc10-4da7-bdb2-121a77df000d.json and https://artists.proofprofile.net/proofs/artist/7e5138ca-bc10-4da7-bdb2-121a77df000d.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 0x8dd63e5cecd3902418630482dfd4ece81034aa1e30ec96791ecc0effa6c4955b. Chain 2 (Bitcoin): anchored in block 958942 (2026-07-21T00:24:07Z), 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/SEBGA2000468.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x894f91dad3d362c24c5985084b42595a32db5e77023afc85f0269ea9c52e9774. Chain 2 (Bitcoin): anchored in block 956857 (2026-07-06T01:26:17Z), 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/SEBGA2000469.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xec02e8d8df1ef87f98b9629b0691d487cd3f4ca8ee2f6a7605d4c5fe177f57b8. Chain 2 (Bitcoin): anchored in block 958897 (2026-07-20T14:57:46Z), 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/SEBGA2000470.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x4873d30586fba4cdf4e31064be644511b6d861f2075214dd8c4ab44ff3d014f1. Chain 2 (Bitcoin): anchored in block 958211 (2026-07-16T01:30:41Z), 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/SEBGA2000814.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xad5878669dc76130453fba7dfb126764b7b7bee301582fe4b8a687ec8451a102. Chain 2 (Bitcoin): anchored in block 958246 (2026-07-16T08:08:20Z), 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/SEBGA2000816.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xf6e672b2aa80c45c95d6b0cfce88f0468c2226d45f33b5d37ec65550eb6788f7. Chain 2 (Bitcoin): anchored in block 956822 (2026-07-05T18:48:28Z), 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/SEBGA2000865.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x7cd26f83dc33499ac022b383a41f9f773f719dae5b1fb9f3fe47ef7c227e9261. Chain 2 (Bitcoin): anchored in block 956713 (2026-07-04T23:03:25Z), 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/SEBGA2000866.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x9c718166004ed40a810fe80366eb6cc5abe90c801fb805a27b2a783d8b5859cb. Chain 2 (Bitcoin): anchored in block 958943 (2026-07-21T03:21:46Z), 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/SEBGA2000867.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x3ce410543d3bc1a5a1fd0f2ffac57053c952baa81fc225d5bbee84f20dd8350b. 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/SEBGA2000868.