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 0xd9be476c8674ccf5a6edfc390d84b44637be7bf807c5502b304f9e41065d7a81. 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/b1bf117c-9bfe-498b-b99d-60f7574467be.json and https://artists.proofprofile.net/proofs/artist/b1bf117c-9bfe-498b-b99d-60f7574467be.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 0x63356076bba34f6f3e52c359bfaaa40693ba55566b2075a936bd72404903ba2f. 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/DK4YA2017101.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x0cad72168f8760abfc3eddf21f9ab94a684b05cdd4746d393b4eb12f0ad14e7c. 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/DKAZA2200051.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xa0c9689b1d3f4998ca29f2f1e57606bd66ec298f8035bced811cde4453f8ab55. 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/QM4TX2231576.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xbca08649f9b642ef928c9a97502fa64372a3785162387ca07ebfdec26a3efbdc. 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/NLT2H2100495.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x34bd8250f8eb7dabe8a34b328b12f14d6978482ca66e2ffe88e742c626d8a9c3. 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/QZK6J2488576.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xab2b0aba99adaa80bbafbe3d3c34a50bf99ffc03ce9b77e7c6bd291db97547e9. 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/QZHN82469442.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x56fb6c85c3f3326395606bbfe12576f6e0e3f9b2c869c5d3929baf92d134bf96. Chain 2 (Bitcoin): anchored in block 957052 (2026-07-07T14:50:41Z), 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/QZK6J2488579.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xab2b0aba99adaa80bbafbe3d3c34a50bf99ffc03ce9b77e7c6bd291db97547e9. 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/QZHN82469442.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x43b725397401d6f50c6f6cd1a7e123e99d56f60066f4087831cbeb9896e4db58. 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/CA6D22400041.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xd162d000710ead2043538c579f737a4566422ed63a88cfe700164b6a23aa67d8. 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/QZTV32370465.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x89bc3d4e344e03cc2f8a0564d69d1a126d327e6630ab8eb0871abc3f79d11a3b. 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/QZTRX2390687.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xefaf9ee76542e4e901f80a3a4157ad1d6a1acb0b1b542a1a6e97c73addbe4e6a. 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/USLZJ2331960.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x5f4afeead5f07df73cad410c04c00d3c15b03df9987b56d802885149a4259f5b. 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/USCGJ2352296.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xf09e6739452ba6939befaba88b967cf23c34beb5ac3e9197579602b7b7203989. 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/QZD7E1800335.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x89a8ff7a8692516e8f3ff9f5a8ca3ef3e85bf6889e67eed7a540971dccad7d06. 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/GBJX32266501.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x29b27444997111d6fd70420c87db5507875da4159a8cbf3cee3a0f95cecca80c. 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/GBWUL2275479.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x650b6e2b98bbd122775e719d1455d6c29b23a80ab0b6b2d079ee2f61a4bc1f23. 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/GBRKQ2269651.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x26fdb83a80a09d5e12e0fbef36454e4c0eee1a9992801d79ed6d431c5d37502f. 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/CA6D22200361.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xe5665ffa69d54c621eca45e60455032d46ce633636e687daec17c47afcbeed58. 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/CA6D22200395.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x97315d04a9495a28fb19ec384c9e1cc0823089115a145ae3b0b3dc5220fcf449. 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/QZ5FN2288174.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x4e0f90eea435e230cf70ae9dd15ab53c581cbba269f72dcfb26c045142688b95. 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/QZ5FN2286789.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x043949b4208799753880b8715412e393491fae36e3fa86e8fc51c828aa8810c8. 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/QM24S2105319.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x49b259840981aba51a176431567355523faa3d2d3bbbe74814f720b84dbeb127. 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/QMRSZ2101904.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x3bf4977195998a63b62f9620992a1b1e16431a9d51a6d1dc3411a1009e633123. 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/QM24S2102858.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x0a4b39925975f0df7ef9bbe1384a5a5ac3e280cdf51796d5383fe65c804b0543. 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/QM24S2101958.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x2bfa0e25a8aa8a4cec30bd0f22cff861b3fa02afb85729d6dbd636053dc4c158. 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/GBJAJ2100304.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x57d246a7e36f6ce25036a95054d45972afe587f855e17e73c9b8804d24b8d7ea. 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/NLT2H2100758.