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 0x0f05ec5c5165f296980eb0af065b7d300774d234e5ba9ca969e8a121834a8392. 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/377e3d85-cefb-411e-a44c-291455058091.json and https://artists.proofprofile.net/proofs/artist/377e3d85-cefb-411e-a44c-291455058091.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 0xa2fba3a78b3268fc3971e4dd03cae71169735d4007377057dd9fbb367b46f379. 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/FIUM71201040.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x4d278852b10b48d2f44e2a110132068669f97934189661f6c4a3c4fc68775121. 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/FIUM71201041.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x5663cc7f72ae49b49a56082647caf054621779c5042bc7aa767da08ecd9ac817. Chain 2 (Bitcoin): anchored in block 958600 (2026-07-18T19:24:05Z), 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/FIUM71201043.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xc322ceccf93e9b2b69a0c77d9e6e176a18bd1ea661811d84b7bb8efa72b9ab29. Chain 2 (Bitcoin): anchored in block 958142 (2026-07-15T10:09:30Z), 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/FIUM71201044.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xeaaecadc4b4b575f54882960cc56a9f33ecb89477b3b94b5f22b6f0eabe3e1e8. Chain 2 (Bitcoin): anchored in block 958779 (2026-07-19T23:49:49Z), 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/FIUM71201045.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xe881c8cd823608ca63f717689077c197fdae405bc5046b2688b4a24e696c7824. 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/FIUM71201046.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xe44ff8f0e532e3bf7061868581525c0fe37dc1996833bfea49b37d73086bbcd4. Chain 2 (Bitcoin): anchored in block 956576 (2026-07-04T02:06:47Z), 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/FIUM71201047.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x443401efbdef44f4b00b532dd3c03ffbfa7d516ce49220288915655727c41768. Chain 2 (Bitcoin): anchored in block 958448 (2026-07-17T19:49:21Z), 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/QMGB71600402.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xe93622fbfdc8143c12d75c0f6c1a290f1896977bc26e9976da66a5ca66d4941f. 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/QMGB71600403.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xf7c29d297a84990da3305a92924e259adc0a53d75efcef81b8773ce8304d9129. 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/QMGB71600407.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x443401efbdef44f4b00b532dd3c03ffbfa7d516ce49220288915655727c41768. Chain 2 (Bitcoin): anchored in block 958770 (2026-07-19T21:09:57Z), 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/QMGB71600402.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xe93622fbfdc8143c12d75c0f6c1a290f1896977bc26e9976da66a5ca66d4941f. Chain 2 (Bitcoin): anchored in block 956790 (2026-07-05T12:31:54Z), 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/QMGB71600403.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xf7c29d297a84990da3305a92924e259adc0a53d75efcef81b8773ce8304d9129. 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/QMGB71600407.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x4894704e539125c8de3d92ef37d3fa24cbcc0551ab1f6a54296014456406a4d0. Chain 2 (Bitcoin): anchored in block 956634 (2026-07-04T10:04:33Z), 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/TCADR1857663.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xfa47fa8062a9aa3255a7d72f44c0da1be197508929c941cdc006c38bc8fa467b. Chain 2 (Bitcoin): anchored in block 958378 (2026-07-17T06:45:39Z), 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/TCADZ1884197.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x3df774987b8167544901be13966263e20a6b49eb5fcfb8e466e2746bfcc52e6d. 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/TCAFE2039854.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xa6ac445605148b14bb28182a6d409d6e0acc42e281b0eff80fcd6598ead01519. 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/TCAFE2039842.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x9756a47afa68d84f4f9b24ea9e3918b88c76841cc9c5b452567c7217b712a9e4. Chain 2 (Bitcoin): anchored in block 956351 (2026-07-02T11:38:34Z), 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/TCAFE2039885.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xa6ac445605148b14bb28182a6d409d6e0acc42e281b0eff80fcd6598ead01519. 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/TCAFE2039842.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x0d3309549aae50229aafc9ffe13207d281a3fefe596a7c4a2cbf6bc7dfd8f308. 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/TCAFE2039848.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xceb3e5dad9c0b02d4c7ffa1ac505a6525d4517468c92727d8a818b1ff684bdc1. Chain 2 (Bitcoin): anchored in block 956656 (2026-07-04T14:03:39Z), 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/TCAFE2039890.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x7d793077981b29c9c9dda856242ec5032d1a312349672af7f0976963c89277fb. 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/TCAGD2279663.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x90c43d976a41e1228214bfc0502546e4b0c7c8a70b96221a00fc7f6131f13e30. Chain 2 (Bitcoin): anchored in block 956656 (2026-07-04T14:03:39Z), 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/TCAGL2233577.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x97c608edc42321ae943887f8587a828782138dcdbd4aa0482e4120b6ad21a911. Chain 2 (Bitcoin): anchored in block 958420 (2026-07-17T13:33:01Z), 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/TCAGQ2287285.