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 0x46adcb642a82662b0ea6679183b9ea992d7b3738a1f475f46fe36404b8639da4. 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/8ccdff88-e355-44b2-b1de-ff157eff46c7.json and https://artists.proofprofile.net/proofs/artist/8ccdff88-e355-44b2-b1de-ff157eff46c7.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 0x853e5a1321f1676bd312819f3232dc8495f77b650ed935f8e3dedeb74edb450c. Chain 2 (Bitcoin): anchored in block 957774 (2026-07-12T23:51:20Z), 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/QZW9K2482050.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x2dd9129d7881cd88a443709ace95eb0a23de9c4506026b122aebe3096cf09169. 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/QZW9K2482039.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x54a984f4acb623f63793dbbcca4a1f8ff1a57c6821c7a157884c63f4242e1cc9. Chain 2 (Bitcoin): anchored in block 957776 (2026-07-13T00:05:10Z), 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/QZW9K2484196.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x1c8909307b7c48f39a8571aa25ccc8eebdc00186eb01509f737d7104f43ecca5. Chain 2 (Bitcoin): anchored in block 957774 (2026-07-12T23:51:20Z), 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/QZW9K2484194.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x3f97f5f9ee2b861be432ad5d8886336bbf1456451bd3c43b6133fb43404a9ea2. Chain 2 (Bitcoin): anchored in block 956422 (2026-07-17T04:25:01Z), 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/QZW9K2482040.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xed8ec9467630595fa09be6b496d5841967575e4a10cc5e5fa856d2959e58d94b. Chain 2 (Bitcoin): anchored in block 957774 (2026-07-12T23:51:20Z), 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/QZW9K2482122.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xc22d090ba5b5dad6521c5bf0365411ae0b562b48221ef62af46eb3a9b627ae50. 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/QZW9K2481989.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x523a86f11db9db5ec6b9637a512d5663e2851eadc5f37f5801047d12b418fe19. Chain 2 (Bitcoin): anchored in block 956422 (2026-07-17T04:18:21Z), 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/QZW9K2481987.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x3f4ed8079630cdb11905b4831b3266f97c8ab10797a2c5c588205b2f8110eae3. Chain 2 (Bitcoin): anchored in block 957776 (2026-07-13T00:05:10Z), 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/QZW9K2482046.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xb971ea29789edbae027191da71c51b50a6589346a732e441839ca88f32d97026. Chain 2 (Bitcoin): anchored in block 957779 (2026-07-13T00:19:08Z), 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/QZW9K2484174.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x3fa75fb50f60d2f88beb39a366ee75d7381813192f822bc12ae4ebeac83d7db4. Chain 2 (Bitcoin): anchored in block 957775 (2026-07-13T00:04:23Z), 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/QZW9K2482037.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xec0dca9589a4eab328a4de555515c7b21c4e1ff04d855ba0e5a90dd86b5d474a. 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/QZW9K2482031.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xa628f6dfb4f21346a83ca5b1ed5ab9c1a6cbfe5cc554f6c090046d808bb334d0. Chain 2 (Bitcoin): anchored in block 957770 (2026-07-12T23:17:00Z), 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/QZW9K2484163.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xa370efe830305c62c5b046f62d6d9ef4729054cba95f89af0b56e17629c8aeb1. Chain 2 (Bitcoin): anchored in block 956420 (2026-07-03T00:42:11Z), 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/QZW9K2481988.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xd6e76daaf4313cd286628d318221f11167680e71ecb843bcf81ca8e907eab01e. 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/QZW9K2481990.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xa05fb169a447474a4db8f1e01654dfa0895ae907efe4f1b2ec8164658a32bb8c. 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/QZW9K2482049.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x8ebdc25116636e96cb4c21b94b3e9ecc27a8320b8d3adf10c254099bb953ffe9. Chain 2 (Bitcoin): anchored in block 957770 (2026-07-12T23:17:00Z), 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/QZW9K2482123.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xa2a91ad852972d2d4ee6b5a849fe9e7b2739b20412115e390565bd3f836d3ba9. 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/QZW9K2484165.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xa393629cdb480cbf679ccb100ebfb1d8a278d9684b034116b20a8cbcacbe2be2. Chain 2 (Bitcoin): anchored in block 957775 (2026-07-13T00:04:23Z), 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/QZW9K2484162.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xb6c8372c45a370c65877bd9f9d21a19d76c7426a87259483f0924c7d4642ba95. Chain 2 (Bitcoin): anchored in block 957776 (2026-07-13T00:05:10Z), 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/QZW9L2468820.