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 0xb54c79225da74e093fce0987b4aa2aa959b295691afed713b4330416c1019327. 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/64729dd9-358d-45b7-8874-b6f4bc561e95.json and https://artists.proofprofile.net/proofs/artist/64729dd9-358d-45b7-8874-b6f4bc561e95.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 0xe865fa6af68b353ac6e70e5bf2082c4e611351b82208b37f3644f02aff8cb57f. 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/SE6HN2365377.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x94cb180b9ed4a060c911075317eb8da35dafc8dca095e467be72089684f3ed56. Chain 2 (Bitcoin): anchored in block 956302 (2026-07-02T03:30:09Z), 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/QZNWW2304926.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xb9fc0c51f8660086b000b0e39cfa8dd0a60be47f9783a898a2fd5abded86224c. Chain 2 (Bitcoin): anchored in block 957120 (2026-07-08T03:22:41Z), 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/SE6SA2365257.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x4b2644b982c0a0a7dd3f252046c6dfde235a0310fa9270e92612151739169992. Chain 2 (Bitcoin): anchored in block 957118 (2026-07-08T03:20:19Z), 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/SE6SA2341114.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xb4c43999f7df894e17f66713358252c7de915eca6ac03d21705141a917cb9739. Chain 2 (Bitcoin): anchored in block 957120 (2026-07-08T03:22:41Z), 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/SE6XW2348982.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xb8003b762e8dd0e4825ebcbdec45142676d97d81823d64ba87597eea213d2e91. Chain 2 (Bitcoin): anchored in block 956304 (2026-07-02T03:55:08Z), 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/SE6XW2301457.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xb592aace40e875a27c3f2a808fc3325b392ce22630374d29cc76acc53800997e. Chain 2 (Bitcoin): anchored in block 957075 (2026-07-07T18:50:38Z), 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/SE6TI2353944.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xe7f4562324dcba0f6ef85198b79b360358c405e3269994fe27e95797e5ea29d8. Chain 2 (Bitcoin): anchored in block 956304 (2026-07-02T03:55:08Z), 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/SE5BU2432758.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xd87e877e3f4abea92b545bf441427ee7a0de5cdbd390ad375846009f3b461344. 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/SE6I32388997.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xb0a0c7ffdb46823feae407a4a0ecb6bff8e8fb79a0edb75657a7d086bdf343c2. Chain 2 (Bitcoin): anchored in block 956889 (2026-07-06T06:56:49Z), 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/SE6XY2287961.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xa7d13a539e87c812d7c0bf3bd7e0234b783f56f1eb8a6b07918e4dccb9d7f5c1. Chain 2 (Bitcoin): anchored in block 956304 (2026-07-02T03:55:08Z), 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/SE6SA2244532.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x1498faf2a61bef96c8b94d0ecd14da8f970c5f13e9d860863c919bf9abca9370. 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/SE6I32257117.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x698ef81df3b585badff83098da94364ce5a5a3c177497e1961e23fe710abada5. Chain 2 (Bitcoin): anchored in block 956304 (2026-07-02T03:55:08Z), 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/SE6I32202299.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x15df09bb6116a39cf88edf73d5b171e7cfdebe9c4726f6ab4336fad91227d0df. Chain 2 (Bitcoin): anchored in block 956304 (2026-07-02T03:55:08Z), 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/SE6TI2389857.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x46b995bbe94f32c59b0bb2445bb7b79e4bedffca7fd87e5e4da44cd303f43b5a. Chain 2 (Bitcoin): anchored in block 957073 (2026-07-07T18:39:05Z), 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/SE6XY2148195.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x9efb8e536db4d84bf4e0bf4e77f507155fb555c2c3bdd01a1aa38efd8948a174. 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/SE6XY2148196.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xbc9442dd83a0342657b8b8e638c05ca6d92c47d30dbfac1d43eca72e2978d8d0. 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/SE6A91934255.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x76a328a65d0d254b1ff32b9b0060f8e3122fa0bdd216e15e2bbb5575da412b0b. Chain 2 (Bitcoin): anchored in block 957118 (2026-07-08T03:20:19Z), 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/SE5752051685.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xb39e2280a16463e57a18117370551fba601044f26f4f713803738d67ee6ab4ad. Chain 2 (Bitcoin): anchored in block 956304 (2026-07-02T03:55:08Z), 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/SE5752051686.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xfc6d08446ecece0be6756777af14d6a14e924b8dfce31de7e8722ed7ba1c378b. Chain 2 (Bitcoin): anchored in block 956302 (2026-07-02T03:30:09Z), 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/SE5BU2058957.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xcf3c236578d3325a2db24bd12c11510c20e6742fd9caa3c7c6d0c4696217b488. Chain 2 (Bitcoin): anchored in block 956304 (2026-07-02T03:55:08Z), 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/SE5752051689.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x14aa54c26fb55c5c1ecd09bb26a80782e14b74c8ba1d905896c57dda52bd8c40. Chain 2 (Bitcoin): anchored in block 957145 (2026-07-08T08:56:20Z), 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/SE6TI2149546.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xee6b5f9c47528b05056c5550abe271eaff49d8bdb896fc5882a1f7be02d7c39b. Chain 2 (Bitcoin): anchored in block 957046 (2026-07-07T14:04:01Z), 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/SE6HN2156196.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xa0189bfc8850251e854eee6bfff325f787539202a53268fb95509d46f5af3bdc. Chain 2 (Bitcoin): anchored in block 956894 (2026-07-06T07:53:57Z), 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/SE5752137504.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xc58dd5596f36825bf725707507d3366884f2bfc6674e5b214ef93b460f2c05b1. Chain 2 (Bitcoin): anchored in block 956304 (2026-07-02T03:55:08Z), 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/SE6QE2096426.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x01c397bfc76ebda4206552f5120ca8dc224c4224072f3bf1ac82adfe26166ec1. 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/SE5752028861.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xf06f71c8be0520ea7c61ea5daa443ad72da435ce8f1cc12cb5bb2504f42539f4. 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/SE6HN2051102.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xfc6d08446ecece0be6756777af14d6a14e924b8dfce31de7e8722ed7ba1c378b. Chain 2 (Bitcoin): anchored in block 957120 (2026-07-08T03:22:41Z), 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/SE5BU2058957.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xbc9442dd83a0342657b8b8e638c05ca6d92c47d30dbfac1d43eca72e2978d8d0. Chain 2 (Bitcoin): anchored in block 957124 (2026-07-08T03:53:27Z), 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/SE6A91934255.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x1cc3d5c6823c9154ef585d4914ef8d950d5690ac4b68de9a492aa37a6e70f793. Chain 2 (Bitcoin): anchored in block 957084 (2026-07-07T20:41:57Z), 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/SE6I31975310.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xa0657b42366769efa5f53ff81c1ab39f5f062f118b8df58d9d34c0e01fd65539. Chain 2 (Bitcoin): anchored in block 956304 (2026-07-02T03:55:08Z), 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/QZHN71974263.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x5776b2a742d8d13aa7902f336686330fb7e6d6fc59987efef834963b05728b32. Chain 2 (Bitcoin): anchored in block 956304 (2026-07-02T03:55:08Z), 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/QZHN72054876.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x1c7b7af2734a46014d5884c5349bde159bbba51cfb78ed5280ba25ca11960a5c. Chain 2 (Bitcoin): anchored in block 956349 (2026-07-02T11:34:59Z), 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/SE6XY2173454.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x59efac6bc8fa28279d69cf45f914c0e1b52594bb9bf58879366fa6ee44dc2e70. 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/QZZ792401152.