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 0xd593ee0749233c20ec21cab616d1f323d50d1b30eca2d83c0451aa8f4312bf83. 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/b60060fc-3919-45a3-95ba-2d044622448d.json and https://artists.proofprofile.net/proofs/artist/b60060fc-3919-45a3-95ba-2d044622448d.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 0xca305440036318d0ed4eae7084bfc9a574e6efb6fc1461a1d479d1d09c901570. Chain 2 (Bitcoin): anchored in block 956551 (2026-07-03T21:18:05Z), 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/DEC710500201.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x0ba41b0e285d20edc0f3e546a76d7c8dd3bf52fb00ace4fa504a20a6b862d662. Chain 2 (Bitcoin): anchored in block 958765 (2026-07-19T18:01:47Z), 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/DEC710500202.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xabe2eedef7b2d29c7259db47ccb6bee84e7922f70b49ae6e34ab2f213230ff29. Chain 2 (Bitcoin): anchored in block 957767 (2026-07-12T22:25:13Z), 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/QM6P42438401.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xfcecebe29a5bf2e2231123ff25bc8e5c4897077b048aad5e06c8c843cf32ab36. Chain 2 (Bitcoin): anchored in block 956476 (2026-07-03T09:04:44Z), 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/QM7282413713.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x4d4293aff1e956e485e97a0db8ade33966eafd80eff3e4e76b681e95724c82ac. 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/QMBZ92496664.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xe80c45aff013917503f3264b6405701f49c22956fd98ffbb00849cc1a6402822. 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/QM4TW2531933.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x92adeae78a637410ff82a9e6518834fc0517aa8f7eca52d51ac2db97cf524030. 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/QM4TX2531858.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x6530b98446d5b1114aa41b2d1a83b9c05e5eae92855c2382adc719472878cb17. Chain 2 (Bitcoin): anchored in block 956476 (2026-07-03T09:04:44Z), 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/QM4TX2531864.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xa361da786ac5da12f9d23cf582dfd8dc3e7ab3dd055dc177103ff69ee9287c4e. Chain 2 (Bitcoin): anchored in block 958083 (2026-07-15T01:50:31Z), 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/QM4TX2531859.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x16cc6709f0ac5516cb5c74690c682adc4f3208debc38e489a8af1295f9d55714. Chain 2 (Bitcoin): anchored in block 956484 (2026-07-03T10:47:44Z), 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/QM4TX2531857.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x90c6a7fc4d9bb60c0c188f67278af19da061c5e81abb25d58ef05490719487e6. 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/QMDA62497277.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xd585dfbcf2f9a56793c4019926a17d16dc68f671be9bdd77be70e12f72a47e4c. Chain 2 (Bitcoin): anchored in block 958622 (2026-07-18T22:58:55Z), 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/QM4TX2531860.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x632c43b5e6b8743678f8ae7edf2eb430a61e55d98e6d071289152f33587881f5. Chain 2 (Bitcoin): anchored in block 958977 (2026-07-21T08:23:22Z), 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/QM4TX2531863.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x9aca7188acb0581ee185c700d905acedce46c2673ccc030209db3cae6b847824. Chain 2 (Bitcoin): anchored in block 957122 (2026-07-08T03:39:04Z), 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/DEC760500232.