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 0xc328516efb4f832b5a860492baaf2914df3501228cf524f8829a9b790966387e. 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/d1038da7-de55-4f74-aa6b-e5762ce85e5e.json and https://artists.proofprofile.net/proofs/artist/d1038da7-de55-4f74-aa6b-e5762ce85e5e.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 0x22c3945848a6ac1daf5eacc03cacab080e64736caa56a56b91248fc2d748626b. Chain 2 (Bitcoin): anchored in block 957650 (2026-07-12T04:18:57Z), 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/TCABW1459723.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x24b4997aa72958439438c66ac3ce68869d78e02b7bbb531090563928eeac81b4. Chain 2 (Bitcoin): anchored in block 956545 (2026-07-03T19:59:51Z), 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/TCABW1459727.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xe16e1878097c4730ccab946b870adb82b34fcea411c63b90d56eea0925740d01. Chain 2 (Bitcoin): anchored in block 956440 (2026-07-03T04:03:57Z), 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/TCABW1459704.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xb4410b38464c09fbf9c3dc511114db070b8ed7391de7a4903da8b61bfec7a586. Chain 2 (Bitcoin): anchored in block 957650 (2026-07-12T04:18:57Z), 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/TCABW1459712.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x4bb401d75b9e09f8c1313b0bbb8a8ecb2deaa99f4632dfd501c526283d8cc8f9. Chain 2 (Bitcoin): anchored in block 957650 (2026-07-12T04:18:57Z), 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/TCABW1459705.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xe9beb7484b6ca15c1930cc5538e413dab734738be2c9d3776f273494ed9115b5. Chain 2 (Bitcoin): anchored in block 958977 (2026-07-21T06:27:23Z), 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/TCABW1459708.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x2968c5412fbaa8fb959b8365e48ba53927211c0ce967478233ee946cfcdfacf8. Chain 2 (Bitcoin): anchored in block 958384 (2026-07-17T08:27:02Z), 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/TCABW1459710.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x229175e06e16e7ef90e8fe457bdc67fef6b8a47e3befd51ae8915c50b5955c77. Chain 2 (Bitcoin): anchored in block 956551 (2026-07-03T21:18:05Z), 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/CLLL21500286.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x899dc676aea2fcd8e417eddf39dc5171f3a94955b001b155a688c0e05561886f. 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/CLLL21600352.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x79b1ce7d415173ee005ec4331890c09f823af2b7a1d58bcde92d674f34106127. Chain 2 (Bitcoin): anchored in block 958765 (2026-07-19T18:01:47Z), 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/CLLL21600355.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x3f9b0f2892cb5d5d11ace8548fabf3e7c794200c4c13d6e75b9b680edc630040. 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/CLLL21600356.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x90d9c57e8168f63cb1f2d5f641783e82d4b9f5515b2bba6e479d75278c7aca2f. Chain 2 (Bitcoin): anchored in block 959047 (2026-07-21T21:29:19Z), 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/CLLL21600346.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x3a3969825bd0f82e157eb9399beac9eec5381659dfeeb8ebba5884665846f1a4. Chain 2 (Bitcoin): anchored in block 958390 (2026-07-17T09:35:49Z), 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/QZGLM2046569.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x9f597ba8da113bfe9c6a70693c9e79a03f17af3e8757b5fc7500ce1d366461d6. Chain 2 (Bitcoin): anchored in block 958716 (2026-07-19T10:15:55Z), 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/QZMZ92076676.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x3c30f8f50fe8752542ffbbd0e608fad40b688ab1b147c1152050a37704d175fc. Chain 2 (Bitcoin): anchored in block 958943 (2026-07-21T00:27:37Z), 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/TCABW1417528.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xd6ef2fac97a8a1c694deb74a1bb66d63be00c9d4c02aff311d434dcafd530a73. Chain 2 (Bitcoin): anchored in block 959043 (2026-07-21T21:09:25Z), 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/TCABW1417568.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x18b57fa09b323e6d45f9226b1d5478f736e57171a8d7ee35a0424233d63bfd91. Chain 2 (Bitcoin): anchored in block 958316 (2026-07-16T22:19:14Z), 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/TCABW1417571.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xa1b8a405fe98aa9caa9b385d7caf34ba1f44c62304042c9eec26e5fb2884deb2. Chain 2 (Bitcoin): anchored in block 957653 (2026-07-12T04:35:02Z), 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/TCADS1847939.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x3e702f031f098bb2707fb69b846b99e4214f86e752bf7f4ce30730dc5fe98ed2. Chain 2 (Bitcoin): anchored in block 958969 (2026-07-21T04:58:13Z), 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/QZMZ92153898.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x6c2b730e620143444d30dc741aa29e5b41072119a79e02c27f3cbd6b3e0deefd. Chain 2 (Bitcoin): anchored in block 958484 (2026-07-18T03:34:53Z), 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/QZNJW2108999.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xc86c0655092fd1f4adc3e78f3fd4e43dae8ab3d8a04931f375d655392e6ab9b7. Chain 2 (Bitcoin): anchored in block 958771 (2026-07-19T21:54:27Z), 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/QZW9L2366809.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x15d50bcf4280346bfd2bfc8c925064bf0a5a9d2f7914aba9e421962bf747bfb5. Chain 2 (Bitcoin): anchored in block 956776 (2026-07-05T10:59:37Z), 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/QZW9L2366810.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xa96785d3598b126d9f86f51b245d6547e67b62100635a5235693b0534e24ce81. Chain 2 (Bitcoin): anchored in block 958627 (2026-07-18T23:33:54Z), 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/QZW9L2366812.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x811527dd97d4aaedc7a4eaa811fa1c8df2540ffd14afebac26ab92dde69b1c07. Chain 2 (Bitcoin): anchored in block 958885 (2026-07-20T15:49:06Z), 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/ARIXB2208677.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x3a3969825bd0f82e157eb9399beac9eec5381659dfeeb8ebba5884665846f1a4. Chain 2 (Bitcoin): anchored in block 957852 (2026-07-13T11:25:45Z), 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/QZGLM2046569.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x6c2b730e620143444d30dc741aa29e5b41072119a79e02c27f3cbd6b3e0deefd. 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/QZNJW2108999.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x35cefd4f5a08615c826a69633154f71e26c79af32423aa2ef63c74c574701ec8. Chain 2 (Bitcoin): anchored in block 957782 (2026-07-13T00:52:48Z), 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/QZTPX2560463.