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 0x1481d6f0703a2ad6b8a827212f805857ea51f79031743266d7c219fb1ba18e84. Chain 2 (Bitcoin): anchored in block 953407 (2026-06-12T19:24:56Z). Bridge: the canonical record inside this Bitcoin proof contains the same CopyrightID. Verify: download https://artists.proofprofile.net/proofs/artist/6dcea0a6-8f87-4921-8102-2865588dbe0d.json and https://artists.proofprofile.net/proofs/artist/6dcea0a6-8f87-4921-8102-2865588dbe0d.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 0xf4daaf960905e36908edb9994cf195be564277ebd4703489b9ad811eb97e2742. 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/SE5IB2299706.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x03c39783a76a509d2dc474f17268d2c1a47e1e825d51141b37c8c9b4f3e1565a. 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/SE5IB2302594.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x6318a069f512203c07e64c55ee9928e3ca05d8569391f51609df30bc28004c8f. 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/SE5IB2298858.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xce24d996dcbd305272e29af5b8826607ad933f6169e004c10a0999eef2f8031a. 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/SE5IB2298874.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x0c752758c77de4f44b0f792311fddf7e7c020d0c8b96b5fe972a917cbef5a833. 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/SE5IB2298807.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x39ee95b7dabbebf482bd0bf2707771629498e5683e3e4fbc4b9042ac68fe0a59. 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/SE5IB2299715.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xacd524866b17e940887b87592a421f5a40326f954271c231765da3aa1b454080. 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/SE5IB2298815.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x043a474e973ce5889b57d400baaea08d04a5e2d1202f8fd5352a11d1f4536f7c. 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/SE5IB2298866.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xbc9a7c221ee952ca6b46d81ebad3ca0003b8fbbfa453ab0cf09a89702e64acd6. 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/SE5IB2298875.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xccf56c597dae4305cb1d4c52a96ea6a21316291ed0d34e76e1ead584db390d56. 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/SE5IB2298816.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x5882cf8cf208ca81a6c3a92d5d9f2897a6ceaf377fe13701caa33ef9ed28e5bd. 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/SE5IB2298809.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x0118c436fae2bb3a69629e776bde56892d4587205aa609554a2a6e7f38cac646. 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/SE5IB2298823.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x448d8f50037a968d925bfd9753e0298b407c08b022b78b979bb766e9831a928c. 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/SE5IB2298876.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xaac9f66e62888198c425264ab310a3066f499975efbf3975ca9089260ace44bf. 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/SE5IB2298857.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xcbcd7b8faf5e0726aee19c1f32e049f10628c8be9e65c939aeab0bb689cc2c90. 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/SE5IB2298825.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xbe9fb053b81a99bdec82f484a33f04b3c71333b9358d8e20b862be398df4f84f. 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/SE5IB2298813.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x6dd46ad62f3ec84929423f46939311945d925583c365b70a8a4de2e750fc0dd2. 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/SE5IB2298819.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x24a9ba7ce698dbb2de63055c434f91aa7a0ce85c93e7e4e05068a70dc9a54925. 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/SE5IB2298806.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x6e22aa25920c819606516055827c47be28ad8b2baf19bb5be5cabeb5607ebbc8. 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/SE5IB2302399.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x4f68cd36fa65fabaf478ea8d45ade3701f10fe0b158fd22df5320d9c52776f8b. 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/SE5IB2299722.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x291863a593ccf032a6494095e155f8687e056b8dfb0b78990145c72b2b085c07. 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/SE5IB2298811.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xa369ce2c5d9cfa7ee4c97e3107791eb05c6806c5d9bf88db2ef64ef5eda69d0f. 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/SE5IB2298871.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x78430b44ff187df351381a0a9db4df84cee72a88c0f373da8c758349c41852d4. 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/SE5IB2298818.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xc0f38df32d2f3942d63e2bf2109dd71fd196d7209bee209feecb5e53fde90054. 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/SE5IB2298854.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x92e26687bc66f150e5cc2dc3c104f1aef7b1ccb8879993e9dce28ee432e6fb59. 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/SE5IB2298826.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xc3d156cea86805fd47d2afb7c44a5c0336567ae53c4816bdcfa02f040b597a44. 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/SE5IB2299719.
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Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x17ce23058fb3fcd70f31daa0dbae21d68e05ef52cc265acfbeb03ff8107ea9ed. 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/SE5IB2317391.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x6109b8a7cbe2caafb813dfc23580b1f6f1828a9491554b8cda1ff2e4a180c402. Chain 2 (Bitcoin): anchored in block 956891 (2026-07-06T07:16:32Z), 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/SE5IB2218035.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x1a16fff1590b8c25f8f3236ee864ab05a2a40b73f6449ab91504b95782fc2f33. 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/SE5IB2218036.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x093157bcd8f0551adb96243ec6b43cc25c95f667ba7024c3c7c6965b9f83ac36. 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/SE5IB2218037.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x18a8822c42b5fcc04ff7b0dcd5f390b97867e148af4001f19c8497947423e55c. 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/SE5IB2221560.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xc49a9b2011390c524eb49d0342a282bf2bebfc80519fd00dea8ab13504bd7d3c. 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/SE5IB2221562.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x7e0f9d5e557f79cceffa82c470215c7177ecb35b8347b243f49779571750c097. 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/SE5IB2287700.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x9638fb15ab394f9541badfe19abaa7e04873ac250ec510f3434b2aa50e22858f. 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/SE5IB2287702.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x448949259144ecbccb51e74a5f65119729191a042c11342e676cc6d21d8d327d. 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/SE5IB2298814.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xacd524866b17e940887b87592a421f5a40326f954271c231765da3aa1b454080. 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/SE5IB2298815.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xccf56c597dae4305cb1d4c52a96ea6a21316291ed0d34e76e1ead584db390d56. 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/SE5IB2298816.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x08803e03158ba8ee1f3430c9b4baf228fd62cc4c7d282b3f98fdd645ed9a968f. 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/SE5IB2293777.