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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 0xaec6d70901ae6154e567519951087119433386010bb43f7adc5c899cca3dac8e. 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/5883de6e-e923-4a2e-b1f1-021c2de915c6.json and https://artists.proofprofile.net/proofs/artist/5883de6e-e923-4a2e-b1f1-021c2de915c6.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 0xc078a7e43f609db6f003c3b6ab6297a0571ae51925d63787b3013e9498a85c04. 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/GBSMU6551243.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xf17292389d8eed1e019c206b3626ec796cfb7ee869d918915e7fc6dcbad46f7b. Chain 2 (Bitcoin): anchored in block 958935 (2026-07-20T22:08:19Z), 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/GBSMU6718749.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x72aed085bb8d39f26417d51bf7ae7936e8f589bc843f398bb11e0e950b64d09f. 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/GBSMU7061259.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x964cdcb9e4cebac7f265846b4b394e39335ba08efc3fb34276328d9499c34660. 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/GBSMU7151858.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x1979d50ec7af1016c574e558a42e20aa7c392b952f156117b22c54c2d7e0cbfa. 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/GBSMU7396249.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x39ce002e8c5ce5ae8a01f5783055d60f9dce65e7fbb94182486d4ba3f1d60218. Chain 2 (Bitcoin): anchored in block 958917 (2026-07-20T17:53:56Z), 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/GBSMU0054032.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x6b7838b98c5c43e05b7669bcde5318cac1e9c52df3fafda3e7be9ef5fc57dc39. 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/GX8LD2280190.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x504d353b15d104c1c28b0e3cf7d03141b9ac5cb80db25a594a9734ea63079736. Chain 2 (Bitcoin): anchored in block 958690 (2026-07-19T07:14:39Z), 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/GX8LD2244627.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xc725ada9a4d1107fe212bf80d54c93d8dc232598d09354f38c44eb26f86ba8bb. Chain 2 (Bitcoin): anchored in block 958931 (2026-07-20T21:15:01Z), 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/GX5MX2383187.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xdf19e7f64bc25f853c78dd5b35f029b07249886301d5b0cb2fb7f844867d3cdc. Chain 2 (Bitcoin): anchored in block 958543 (2026-07-18T11:58:44Z), 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/GX5MX2382989.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xe8a35c08d7c9b090fb54e43cc2d8dbd4c0f1def354909a678766cc55d0baa1d1. Chain 2 (Bitcoin): anchored in block 958276 (2026-07-16T12:38:58Z), 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/GX5MX2355661.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xa070e588561a1fe850f4e5f1fe122985baf6e7b9176ba4c113579730a0ae15ef. Chain 2 (Bitcoin): anchored in block 958865 (2026-07-20T13:17:31Z), 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/GX5MY2349515.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x9242e65016a30edf96acf246eacc6919a83be6b14e38c91ea5c759a6065f8a39. 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/GX89G2489752.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xc56bf0cb647e6bb47be2be500e47b2d338d106ef3d5bbd6bd2303860f91572f8. 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/GX89G2447270.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xcfc1736d525af3c0d5deb0479c7086be5a1427ed71496354cdfe9b9efc4a99c1. Chain 2 (Bitcoin): anchored in block 958303 (2026-07-16T22:04:17Z), 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/GX89G2573677.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x14762ec16929b2e0b8a42ce9a9ce3963f7e35cb0ac8dcc74b7c01c450ed4f964. Chain 2 (Bitcoin): anchored in block 958335 (2026-07-16T22:37:47Z), 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/GX89G2539343.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x848d40d3c9787af247aed74df07ec5eabe06ec0f3c1706b9dbe2be4561c26727. Chain 2 (Bitcoin): anchored in block 957898 (2026-07-13T19:28:48Z), 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/GX89G2577462.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x3d0e8a58d45fb53884343929ff286d81b722b9b3243f44e05544f6d44ef2b06d. Chain 2 (Bitcoin): anchored in block 958211 (2026-07-16T00:08:14Z), 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/GX8KD2500102.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xfa2b1cf5cb5a6af0f93271b6295005455342cb6d86d05a82a19e02af497b2f1a. Chain 2 (Bitcoin): anchored in block 958601 (2026-07-18T19:27:02Z), 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/GX8KD2545856.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x15b82a8d5c666292bdf9557a18b448b3702d0f823e8083ff8b11276cbc2775b7. Chain 2 (Bitcoin): anchored in block 958690 (2026-07-19T07:14:39Z), 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/GX8KD2518855.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xfc195dab8f8c30acbf51f2cc3713c0aa37c333b91d79c43bbc2ff68495f0d750. Chain 2 (Bitcoin): anchored in block 956728 (2026-07-05T01:43:49Z), 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/GX8KD2566488.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x536e862f02dc9740ade0722a091141330d67eba277bc5a1b5b86e3040e0cec56. 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/GX8KD2567280.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x69048d5584a095fdfc32e5fe630fd4945ed9f1a8cc8431a3e523b9e016492856. Chain 2 (Bitcoin): anchored in block 957771 (2026-07-12T23:27:28Z), 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/GX8LE2529657.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x66dc8ec26df66e6abac8de1ce97f061b9b8ddad3c6e2e9ec700855b029cce0e1. Chain 2 (Bitcoin): anchored in block 957772 (2026-07-12T23:31:17Z), 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/GX38U2598764.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x7c1e2f4219e0e5b3935f216a0f28a87ca09fbead97640ecb9941ec0c5f28be5f. 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/GX38U2561290.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x82144c333f3fb414cace948cfbd39b4567ccdf6c22ab549975ec7ac590a83969. Chain 2 (Bitcoin): anchored in block 957772 (2026-07-12T23:31:17Z), 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/GX38U2550625.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x4fe8972f53e804b6011f01c649b9749ca86e89429e2d91d21f518a58862d765a. 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/GX5MX2598837.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x2555b75676348d39e254a94e7ccc61ea5cf42073d10da1053c09c988ce0f8190. 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/GX38U2544304.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xcbd8bd7feb385b2aa1ba31dcbd7a94cc6b3019389c09b6c0946547e699251463. Chain 2 (Bitcoin): anchored in block 958340 (2026-07-17T00:53:26Z), 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/GX8LE2533681.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xe7705d2d312027da3f64c628d6ea90fdb1693c16d150743606a0bcaaf5526740. Chain 2 (Bitcoin): anchored in block 958377 (2026-07-17T06:48:00Z), 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/GX38U2515693.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x2d6d29139ab08e870979b852e9c00263732f9fb3b91a106bc95660cfa3942f51. 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/GX38U2566497.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xdb7b861aeaf43deb5a708804f880679e5b0955fad4491700d054de6b781e4be6. 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/GX38U2572496.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x49e27b8b5260644bd93adb9fae4394b7b064415f76df949cb759ed0408c7cd96. Chain 2 (Bitcoin): anchored in block 956728 (2026-07-05T01:43:49Z), 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/GX38U2592666.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x17ab525d6e16682c3cad677fc4f426f4b7ab7e7143c49b38dd5f62d8c8ec53a4. Chain 2 (Bitcoin): anchored in block 956728 (2026-07-05T01:43:49Z), 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/GX38U2523660.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x1f7f340626c774cfd248a95f81fa3243deb787ec34ce5bcc077b6a1e819992eb. 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/GX38U2526582.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xe150c8ee15d90610395cfd075c5e493cd3c9579b6962b728264281ed8ba7c1fa. 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/GX38U2509839.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xe19398df62d280603a6a07890f579bac4965ed16e61d06545587a7cae47beb5d. Chain 2 (Bitcoin): anchored in block 958846 (2026-07-20T10:55:40Z), 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/GXBDS2476420.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x195616be3d5c52a1b48a0ce7184cc17003553ae0c8d478953c609b0fb82b0fd5. Chain 2 (Bitcoin): anchored in block 956728 (2026-07-05T01:43:49Z), 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/GX38U2560713.