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 0x622614d71ca03ba7d964f4fffc59e159a74f95e36fe84542e865a03f05545ca8. 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/9379318c-0931-4b87-9226-1d4f3dcbfad1.json and https://artists.proofprofile.net/proofs/artist/9379318c-0931-4b87-9226-1d4f3dcbfad1.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 0x55de5d9af0f26f4fe854eb9b0ee6b5d56f169bcf9ee6a761533c18aa673739fa. Chain 2 (Bitcoin): anchored in block 958146 (2026-07-15T10:33:22Z), 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/QM24S1927767.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xf380389a56024e14650dc0dff97b4721efde73edf18de7bbe28a79a9c917a923. 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/QZES62009140.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xde66bfa93887636692667d3d2ba903759b0066507f3a1868d545e1287b977a35. Chain 2 (Bitcoin): anchored in block 958432 (2026-07-17T15:43:17Z), 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/QZHN42026843.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xe57ca225a24475f2a369ae1c4b2bb3238745dccee3eadc95f7928fecad520073. 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/QZMEN2075893.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x52717b49b304fcf13677a735aaf2a5e2fb9af700f46407f04643f47c67ec7ceb. 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/GBKPL2279709.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x8e05bd10842c9600f2a7a5c6f604a844ba0b59a1f0e15c6bc36743c337158f5f. 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/GBKPL2284431.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x3b1a5c08776cbdc4e600db7651af4b52f520b752ed1a54e88940ab957fb7bd99. Chain 2 (Bitcoin): anchored in block 956560 (2026-07-03T23:28:02Z), 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/QZK6H2201481.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xd979f02af5252553a6383edcde6c64929eb09a96eab12d659c080c422c393b1b. Chain 2 (Bitcoin): anchored in block 958325 (2026-07-16T23:58:59Z), 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/QZNWQ2245085.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xe385edd251c5876f81c2b32bcafceab3913d9390f37579279d57f2a85aa9ee17. Chain 2 (Bitcoin): anchored in block 958383 (2026-07-17T08:20:01Z), 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/QZNWZ2236369.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xafbbff1d50a1eff286c9ed3f23e16fe30daa158d9940dcebb8c36c261e09a033. Chain 2 (Bitcoin): anchored in block 958489 (2026-07-18T04:13:26Z), 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/QZHN62387691.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xb5bca0c278d43bb306525cfe95d81b115297b183601e1199f98b72cdde668f3a. 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/QZHN92396008.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x47e2f84f1b63fe4f3c9b96a792c6f1f29f060f24d9b14a442c453131ec031822. Chain 2 (Bitcoin): anchored in block 958383 (2026-07-17T08:20:01Z), 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/QZHN92394462.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x0215d576044758ebb4cc50d1d6413151283e3387897bd507c4e604f2fe0d55b7. Chain 2 (Bitcoin): anchored in block 956772 (2026-07-05T10:01:46Z), 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/QZTAT2321899.
It's ok, I'm okay (2yr Anniversary Edition)
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x0a29767c1782585241038e42df054bdda9934514d46d9c0561bce0aed701ef88. Chain 2 (Bitcoin): anchored in block 958110 (2026-07-15T06:57:12Z), 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/GBKPL2284430.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x7ffb79b328c35d7e71fbd8d03332b258de201c92c89f792eecdee2c7845db583. Chain 2 (Bitcoin): anchored in block 956776 (2026-07-05T10:59:37Z), 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/NL8RL2408331.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xace5b09de681cc3dee32f25f07502581c7c0525b522d7d7b1c39702d7ea39dcd. Chain 2 (Bitcoin): anchored in block 958774 (2026-07-19T22:33:29Z), 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/GBKPL2164060.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xfbb1a4a6216fbf5ba0c0dd6b16319f232ee769f54a504a05dd0db237c904d8a2. Chain 2 (Bitcoin): anchored in block 956725 (2026-07-05T01:12:41Z), 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/QZHNA2446624.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x47e2f84f1b63fe4f3c9b96a792c6f1f29f060f24d9b14a442c453131ec031822. Chain 2 (Bitcoin): anchored in block 958576 (2026-07-18T16:22:28Z), 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/QZHN92394462.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x4c79379cc50f1c5f94fbaf40e87392cddb3dff81723f50181af5c6885ae0b934. Chain 2 (Bitcoin): anchored in block 958662 (2026-07-19T04:43:15Z), 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/QZTAT2321900.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xb5bca0c278d43bb306525cfe95d81b115297b183601e1199f98b72cdde668f3a. 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/QZHN92396008.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x0215d576044758ebb4cc50d1d6413151283e3387897bd507c4e604f2fe0d55b7. 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/QZTAT2321899.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xd49caaa4a75d191aa70d5f98fc6dcb20e22edce669de57eb5c7d6d0181087644. Chain 2 (Bitcoin): anchored in block 957919 (2026-07-13T23:58:45Z), 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/QZK6K2415993.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xd66c19c9e44331d9e95d1997eb5825699bd90a975a2c57eb956f0e59aa6547bb. 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/QZNWS2444834.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xe25a8f8a8e639256d6ff716ff81cefb949ac7a50e4b296daf892fd21b39ebbc6. Chain 2 (Bitcoin): anchored in block 958300 (2026-07-16T16:14:30Z), 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/QZNWS2444835.