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 0x5d3989f6caa4d598061760915e5858b3f8a186394197cd2cdb815f3a7cdaf8cc. 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/6e5ba216-4326-4df4-9471-dd94618bae7c.json and https://artists.proofprofile.net/proofs/artist/6e5ba216-4326-4df4-9471-dd94618bae7c.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 0x80444f5c4b50bbe4021f97dec1d4d28c433c784622b22b337ae3ef651a6d3035. Chain 2 (Bitcoin): anchored in block 956500 (2026-07-03T13:55:21Z), 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/QZW9K2424901.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x10ed1edcf56fcca2f034967ef1bb99c820a15dae6c59e437d3475e9b79d18d85. Chain 2 (Bitcoin): anchored in block 958157 (2026-07-15T14:57:58Z), 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/QZW9K2424846.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xa358fb28260c24d6d85debc8a648c3a6312843cf21fbc9b5b8f34b1007aa87d0. Chain 2 (Bitcoin): anchored in block 957642 (2026-07-12T02:46:48Z), 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/QZW9K2424856.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x21239574ca65765d1d43775c6f9a28f16beb32798abdf509136d9643428f44ad. Chain 2 (Bitcoin): anchored in block 957640 (2026-07-12T02:27:45Z), 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/QZW9K2424892.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x2d68d5b5486f46f5d919baacd2282141d8da9ee0e233b96ee2881bbae2e49ff1. Chain 2 (Bitcoin): anchored in block 958157 (2026-07-15T15:16:18Z), 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/QZW9K2424895.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xdd35dbc6cd9d23b1b2c650c93896bf766f538e86a5fd3f61ba22dd6bce91064a. Chain 2 (Bitcoin): anchored in block 958211 (2026-07-15T23:24:33Z), 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/QZW9K2424851.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xae060a5b9aa49d3ce08cad13de07ac325d43e20c4650cd01c1d5762f641751d6. Chain 2 (Bitcoin): anchored in block 958058 (2026-07-14T20:20:34Z), 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/QZW9K2424854.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x5d95bebb5680762fa0f9519125c5b74f3dbd7c3405d79a6fb44bd97343995612. Chain 2 (Bitcoin): anchored in block 958211 (2026-07-15T23:24:33Z), 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/QZW9K2424845.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xaece87cf76df4cbfa3f2bed52e204218bf90fa6eaca216e2cb43c196dabdcec8. Chain 2 (Bitcoin): anchored in block 956422 (2026-07-03T01:01:38Z), 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/QZW9K2424848.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xeded79d7931addbe8bc4232d255154c53d2ba32a3f4b95a36a03e01904ebb42a. Chain 2 (Bitcoin): anchored in block 956476 (2026-07-03T09:04:44Z), 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/QZW9K2424852.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x051be6aee88884af81fd081cf825216260dec6d6b1790d6ffb6a04b1c7516c62. Chain 2 (Bitcoin): anchored in block 956484 (2026-07-03T10:47:44Z), 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/QZW9K2424909.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x250294c58ae5087d63eb2f9df86832217e6418f8b096623cdbe93e04f7877067. Chain 2 (Bitcoin): anchored in block 958208 (2026-07-15T22:40:25Z), 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/QZW9K2424858.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xb50ed2316c782e4ac7d9fd5fe0ca69a959d8353ab9fafa9f6d56cd40db6b5702. Chain 2 (Bitcoin): anchored in block 958063 (2026-07-14T21:07:34Z), 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/QZW9K2424880.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xd633c728a0cd2bed1c63d566bc55499671cfb454ef74237a6b81d0b8f84b473b. 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/QZW9K2424832.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x0d47f85dc8ee23f5220cf420069ee17175c127a9ce5a3ab240e75c4227252d3f. Chain 2 (Bitcoin): anchored in block 957638 (2026-07-12T01:56:41Z), 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/QZW9K2424820.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x724edba2619e6d83d430920ad977d1eaeae9fabdd8cc51d8375b2675f4cd919c. Chain 2 (Bitcoin): anchored in block 958060 (2026-07-14T20:39:42Z), 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/QZW9K2422737.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x7e66d10f8204ca0a38de55ffa97fd8e451a0c0f7619a2404e5ed550266bdab27. Chain 2 (Bitcoin): anchored in block 958211 (2026-07-16T01:18:58Z), 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/QZW9K2422744.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x22479d39c8c6881130101edb52412e8875e106670a4ff1af3c264ad6ef51cbb9. Chain 2 (Bitcoin): anchored in block 957633 (2026-07-12T00:19:47Z), 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/QZW9K2422743.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x55fba3e754aa1d3b9a95a7a9b74170181cbdf574823e926c282bd2aa9f7c076c. Chain 2 (Bitcoin): anchored in block 956396 (2026-07-17T02:59:23Z), 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/QZW9K2424052.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xbefa2dd497b9b96145a1aaf6f1d3e8198aaf3bdcfe8c823a8a77fda583218aa0. Chain 2 (Bitcoin): anchored in block 958163 (2026-07-15T16:27:25Z), 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/QZW9K2422734.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x05877e179cf757e28fbf95249f19f23fef42b6a6f86a241382c1ef520e67921f. Chain 2 (Bitcoin): anchored in block 956396 (2026-07-02T21:01:51Z), 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/QZW9K2422735.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x41a6d92a8ed726cedc57f6658ec40a0fdd6c02cb1c1902722c883c62d9851304. Chain 2 (Bitcoin): anchored in block 957638 (2026-07-12T01:56:41Z), 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/QZW9K2424050.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x575fc09a41abfb0219306d7887874b93a942ac7776d40e29b4485287191ac5bf. Chain 2 (Bitcoin): anchored in block 957638 (2026-07-12T01:56:41Z), 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/QZW9K2424051.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x28d60b067864d5bfafb6b60ba4af8f8ae9865d24aae29f2ce20c6d42b9fa4905. Chain 2 (Bitcoin): anchored in block 956397 (2026-07-02T21:02:00Z), 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/QZW9K2422745.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xd7050bbc9e1a655061308ad732f9b7909d3ba8f331460db7708e85f582b25c76. Chain 2 (Bitcoin): anchored in block 957633 (2026-07-12T00:19:47Z), 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/QZW9K2424036.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xd470604b996bf0c88ca7930cff09978e3f583e9963df18da04881cd38d505193. Chain 2 (Bitcoin): anchored in block 958157 (2026-07-15T14:50:12Z), 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/QZW9K2424819.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x3d61836c590d9dfa2818d713ead1c5701623544ec03d9037a3cd57753a0a0ac5. Chain 2 (Bitcoin): anchored in block 956397 (2026-07-17T03:09:47Z), 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/QZW9K2424040.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x7416c1573b13a5a5f5e3e15fef68ae9bb970cde53e19b0df7d8d6f0065374987. Chain 2 (Bitcoin): anchored in block 958157 (2026-07-15T15:06:00Z), 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/QZW9K2422738.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x8e4b456dbeeb7353af9b027caf525afd5bdf25575ae77107e758bb7ec65741af. Chain 2 (Bitcoin): anchored in block 958111 (2026-07-15T09:55:21Z), 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/QZW9K2422742.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x32950a882f78cfe2ddcbced9b490a8ec81332cbe4715422e5f04db8203a84c20. Chain 2 (Bitcoin): anchored in block 958060 (2026-07-14T20:39:42Z), 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/QZW9K2424037.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x2895c13f38e55b30b65a6f93f76a35d1cb205c64ece07fb41b07dbec4367acd9. Chain 2 (Bitcoin): anchored in block 958060 (2026-07-14T20:39:42Z), 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/QZW9K2424038.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xb90006ca3bb3726036d399356e66c522c6d14bde38a19eaafa4222b6aa06f05f. Chain 2 (Bitcoin): anchored in block 957638 (2026-07-12T01:56:41Z), 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/QZW9K2424032.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x9b9b169685dc0b481c36d20424f315e4b0a69d830d983ce3ab97af367e2afdc4. Chain 2 (Bitcoin): anchored in block 956397 (2026-07-17T02:36:53Z), 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/QZW9K2424033.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x751a5e1c20e5534845a0d358349323f4fa70989e1f81634b3ea7e54e46937e27. Chain 2 (Bitcoin): anchored in block 958341 (2026-07-17T03:28:14Z), 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/QZNJW2553849.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x56dd17079684754f7a1e08d4596f98ba5610e2170249c4c1742e8782aa0815b7. Chain 2 (Bitcoin): anchored in block 958303 (2026-07-16T16:39:24Z), 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/QZNJW2577629.