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 0x4a7dd0fb522babb9f1b263031cd8d1e25d38b7f590f93f60543de2384f2dca15. 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/3ba7a340-564c-43f1-bddc-0aab9ae53818.json and https://artists.proofprofile.net/proofs/artist/3ba7a340-564c-43f1-bddc-0aab9ae53818.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 0xb221ad7be78a6fe76ba61bae74c11b7bcddd1371a5551b9c93b5386dad52a5a5. Chain 2 (Bitcoin): anchored in block 956420 (2026-07-03T00:42:11Z), 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/IDA141801751.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xd0f67f581a4dc77be2bbd44bff339957d38b4cbfcdc4483bd998f031f9e47cf4. Chain 2 (Bitcoin): anchored in block 957899 (2026-07-13T19:36:39Z), 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/IDA141801750.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x1eacd3c2b01ee57f8bc6bafa906426339c84a007f79b214eff17222cc129cae7. 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/TCADF1723188.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xb221ad7be78a6fe76ba61bae74c11b7bcddd1371a5551b9c93b5386dad52a5a5. Chain 2 (Bitcoin): anchored in block 956440 (2026-07-03T04:03:57Z), 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/IDA141801751.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x7add3e8c4cbbde34306154bff6b01bfb26e57c85a7a72493bc8e927c88b312c3. Chain 2 (Bitcoin): anchored in block 958805 (2026-07-20T02:22:58Z), 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/FR96X1859727.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x9767b0b084cc9adb7c43f43b48baa893487161579a1fa571162001cf0e96d2a1. 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/IDA141901183.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x0783f8a0a2ce3ac19427e3e183fffcd16a2929c90f9cc96a99bc19959f03e42e. 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/IDA141901184.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x0b4dc4fed2ab5789d7b690f0eb0547151a3f23d5b40bc519ac9fb7b8badc63c3. Chain 2 (Bitcoin): anchored in block 958447 (2026-07-17T19:47:19Z), 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/IDA141901185.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x7f3c2a9a0a57c3ba8264fba80995ddf91b495746420ff2ef32a8bc369ef6ff9f. 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/IDA141901186.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x58aa3ae73495c33e9408105e3736f3b9d5d04983b6eb1dc512601e628e9da132. Chain 2 (Bitcoin): anchored in block 958788 (2026-07-19T22:07:06Z), 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/FRX282174872.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x58aa3ae73495c33e9408105e3736f3b9d5d04983b6eb1dc512601e628e9da132. Chain 2 (Bitcoin): anchored in block 958480 (2026-07-18T02:58:58Z), 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/FRX282174872.