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 0x3117067bd9351f07f839fc2dd98a7e9c3ce95a6bc9de1048f1900f1c0e7a821c. 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/1e8af6b6-c9ca-4ba3-9f19-a374548e6f79.json and https://artists.proofprofile.net/proofs/artist/1e8af6b6-c9ca-4ba3-9f19-a374548e6f79.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 0xa32d92b6f93c8400ad8a07a68b74b8023f22099a77c72d0da03a8484c74f1714. Chain 2 (Bitcoin): anchored in block 953513 (2026-06-13T12:47:07Z), 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/QZMEP2223703.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x952a1e91334907515e4eee10b7bc3b89ad6184183491f61b9421430cccad2c5f. Chain 2 (Bitcoin): anchored in block 953513 (2026-06-13T12:47:07Z), 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/QZMEQ2221836.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xee66e2da777b61270ad5afb38a0fc95b0d8677b3aec40d7989f86751a90f1fb7. Chain 2 (Bitcoin): anchored in block 953513 (2026-06-13T12:47:07Z), 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/QZMEQ2221837.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xa0136000b1283de8a3179b10c4eea3673d6fa7c0354bb0a48e04e22112601f87. Chain 2 (Bitcoin): anchored in block 953528 (2026-06-13T15:41:10Z), 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/QZMEP2223704.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x69c99aeffa6a86c90699d80eab831fa4385c6220ebbddeb9f0c8aa006bdff14f. Chain 2 (Bitcoin): anchored in block 953513 (2026-06-13T12:47:07Z), 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/QZMEQ2221838.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x0e055833daa513ca468cccb357bdd74044c2202ffab34c37b82d86385ebf940a. Chain 2 (Bitcoin): anchored in block 953528 (2026-06-13T15:41:10Z), 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/QZMEQ2221839.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xa177b049311ffbdea4ff297db88e2c1d266146a2640724b877c7810f1de1c2f8. Chain 2 (Bitcoin): anchored in block 953536 (2026-06-13T17:25:41Z), 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/QZMEQ2221840.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xf6e909ccad92c0ae4750499b86bbdfae0c963aac20684605d0da13c7197841b0. Chain 2 (Bitcoin): anchored in block 953528 (2026-06-13T15:41:10Z), 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/QZMEQ2221841.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x983d9acf3464ce87349b13ab7cbb5953ed406c2727beb0e8acf94d89ac442467. Chain 2 (Bitcoin): anchored in block 953528 (2026-06-13T15:41:10Z), 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/QZMEQ2221842.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xde34b680bef0590324043d11f38485bbf5e724985f9abfbf0d6dddc9fe07ba82. Chain 2 (Bitcoin): anchored in block 953513 (2026-06-13T12:47:07Z), 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/QZPJ32119230.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x224286164d5a3a04dd3c7a0bcaf0290cbad98287d8b79be4279252c5e213ec3d. Chain 2 (Bitcoin): anchored in block 953513 (2026-06-13T12:47:07Z), 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/QZPJ32119229.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xbffc7097a4ba85f0517026814fc07e00e850df2e1dce1f68676065835d595786. Chain 2 (Bitcoin): anchored in block 953536 (2026-06-13T17:25:41Z), 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/QZHNA2249540.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x8e9bce828e8ae424ee3d0f2647b1330026a070ef04b9fafe950f3a7a4ae35909. Chain 2 (Bitcoin): anchored in block 953513 (2026-06-13T12:47:07Z), 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/QZHNA2249541.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x58ea88d5f024ca3433099bca71c78c5d11e9d397314a78a8cedc9f43e624e8a0. Chain 2 (Bitcoin): anchored in block 953513 (2026-06-13T12:47:07Z), 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/QZHNA2249542.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x87b55a2f19a0cab3c011ed4f73a9f71c61a73778456d72ed57a6c0b4d257ef9f. Chain 2 (Bitcoin): anchored in block 953536 (2026-06-13T17:25:41Z), 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/QZHNA2249543.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xd1639d4edeca6644c607dda4848d84e9bd3766483bb7637bcffd4ec5fe0a64ba. Chain 2 (Bitcoin): anchored in block 953536 (2026-06-13T17:25:41Z), 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/QZPJ32119227.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x46cab5835d635a0aa6ba769a03437c0164628a784df38017f76b0015bac84993. Chain 2 (Bitcoin): anchored in block 953528 (2026-06-13T15:41:10Z), 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/QZPJ32119228.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x77892b383de4e793f3108dc01b75e2097c30d563f3761f1be7158f9998784374. Chain 2 (Bitcoin): anchored in block 953520 (2026-06-13T13:32:09Z), 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/QZES82494608.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x5cbfb194838100bc34bbd8d50ca69fbe1a50712efd60ca88a860d008d8f23f07. Chain 2 (Bitcoin): anchored in block 953528 (2026-06-13T15:41:10Z), 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/QZHN82455857.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x291dac53296bc1e0e4d28acdcb86822d6c3677761c33b68ef6f55b3dbc68d276. Chain 2 (Bitcoin): anchored in block 953515 (2026-06-13T12:53:06Z), 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/QZHNC2412025.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x188995e6d84beb9e94e159acba76d329487d7ab11943e98831f9901b922ae8a7. Chain 2 (Bitcoin): anchored in block 953528 (2026-06-13T15:41:10Z), 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/QZES52455147.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xff15647387f1c241d09c9e3b497c228824f10b8988726301a919869c4b0fdeea. Chain 2 (Bitcoin): anchored in block 953528 (2026-06-13T15:41:10Z), 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/QZDA62419086.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x33f01b25f5ea5476a328ca5a68ab1b919910d617a8715ecd63b96a05b9f5a143. Chain 2 (Bitcoin): anchored in block 953536 (2026-06-13T17:25:41Z), 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/QZTAZ2398619.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xcdfa8c377f9941bfe2af27f94e9d0d4e0498dccd074e3c26736b53b7a295a5a7. Chain 2 (Bitcoin): anchored in block 953528 (2026-06-13T15:41:10Z), 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/QZNWX2324729.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x9adfc209e845ed62ee6a6169741cb201c99301ac3b1d31dff5f676108b5f1615. Chain 2 (Bitcoin): anchored in block 953528 (2026-06-13T15:41:10Z), 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/QZMEN2352306.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xe86aac8718b02de6912576d1669b56e7a79f6ec385e76aab1d4f992ca26f5691. Chain 2 (Bitcoin): anchored in block 953513 (2026-06-13T12:47:07Z), 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/QZK6F2320692.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x803f805ee7314763bc554201bbf01ff2e51cbf3a2937b62be231b198d0728975. Chain 2 (Bitcoin): anchored in block 953528 (2026-06-13T15:41:10Z), 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/QZK6Q2370234.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x68cfc76addefe039ca8d51d4ca5e0bd33d02d0a465f515ed3d00a585a6415071. Chain 2 (Bitcoin): anchored in block 953528 (2026-06-13T15:41:10Z), 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/QZK6Q2370217.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x33c866da8ebad06615f25b59e89e35c351e369f555fe2d291cd1900adaaf284c. Chain 2 (Bitcoin): anchored in block 953536 (2026-06-13T17:25:41Z), 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/QZHN82346629.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xa0136000b1283de8a3179b10c4eea3673d6fa7c0354bb0a48e04e22112601f87. Chain 2 (Bitcoin): anchored in block 953513 (2026-06-13T12:47:07Z), 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/QZMEP2223704.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xa32d92b6f93c8400ad8a07a68b74b8023f22099a77c72d0da03a8484c74f1714. Chain 2 (Bitcoin): anchored in block 953528 (2026-06-13T15:41:10Z), 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/QZMEP2223703.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x46cab5835d635a0aa6ba769a03437c0164628a784df38017f76b0015bac84993. Chain 2 (Bitcoin): anchored in block 956312 (2026-07-02T05:09:12Z), 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/QZPJ32119228.