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 0xc815c247493fc6595ce12a2d37363d9de6436b15cd40f58f626608e9db2a3f94. 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/ad58394c-62ae-4a97-bcf5-81a9272b91b1.json and https://artists.proofprofile.net/proofs/artist/ad58394c-62ae-4a97-bcf5-81a9272b91b1.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 0xc004bd4e502af9f93e734bb9afa3a2765153b4be40739fda582351896ac01e50. 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/UKSP82200008.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x6e6083223473b722c5ae304536453deebe3b1010b122cf6c66cdb021f10cedbb. Chain 2 (Bitcoin): anchored in block 957120 (2026-07-22T01:31:45Z), 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/UKSP82200009.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x2056b0919e0c815add0151f08828ca473a1d5fe4cc549b0a9cbe47aa2072cb88. 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/UKSP82200010.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x0c0c285072c080dd657311f2d6fc1911ec34ba49450257c1aebb2120223f1032. 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/UKSP82200011.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xaa94b18ffc525ae67eed3bf1c816639152e4e34620f5599ff251a367ddc3e314. Chain 2 (Bitcoin): anchored in block 957061 (2026-07-07T16:07:00Z), 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/UKSP82200012.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x3d22bf6d98394b93dd62e36c7614c036acd55157b510e4ac39e6f4e7cc399ba9. 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/UKSP82200014.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xc734ae266a2b287a12c97abdc8d88846fdf990eed6309e6b021ec0e028899f84. 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/UKSP82200015.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x85b4f5d2d65f3e79ff61d0cda71dcbf6cba433bbe35d194a249b4c15ae8cde5d. 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/UKSP82200016.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x141cb2b43ad1043904a3c8ca49b46a003ac5edc411a06ce8802104e19bab673b. 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/UKSP82200017.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x7ac5293f32f59f9635008ef89f88cc2700af7da312d48e5ef0c50ac538136c76. 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/GB9Q62400012.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x8b3173c2b06def2975e221b50fdb4b52a01c6f36d76eb0beb33443591d20eb79. 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/GB9Q62400013.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x9c38c3011b20bb260713cb6a3abffeed4bc96dd86ad91e546607bfa6dacbf54a. 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/GB9Q62400014.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x23f2e14c5e30c11099b6608a004ef4809280f0ca64a8c1e9a856eee7ca5261b0. 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/GBKQU2433699.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x67a6e6a5b0b490900fb0ed5ca835587f0abba0dddf7b5acf36e44981273a0b94. Chain 2 (Bitcoin): anchored in block 957073 (2026-07-07T18:39:05Z), 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/GBKQU2435615.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xbe9734fdfc565cb2b94acd2fee34efc8023bc09166b745bfa38a008d6d5230cc. 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/GBKQU2290174.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xaa94b18ffc525ae67eed3bf1c816639152e4e34620f5599ff251a367ddc3e314. 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/UKSP82200012.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x2865e4b0066672bdab7cad6b420f1d6fd4bb9b1b14dd46830dababfbffc18da5. 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/UKSP82200002.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x5696cdaf87403f93cf1164e87c2519f0b82fd9ad5a25846031bd0ec1ad1b4183. 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/UKSP82100011.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x0fd96baf811929519df9d20895b6e7253cd14e5ae1d25662a0fe54661e8f7363. 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/UKSP82100005.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x72d88566b9ddda0af67e9c6b09d2e5c04c0db2a26cc2bd3e45de9428c8714790. 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/UKSP81900032.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x38a389cff7182fd2af703c76205ac3a6a828931a9882542481443464a98cba60. Chain 2 (Bitcoin): anchored in block 958041 (2026-07-14T18:13:17Z), 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/GBQGW1300165.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xebdaaff7311c6e1e66271b2cd7b7efa4c4f0f315a2f375884be0178026f537c9. 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/GBQGW1300166.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x32c4bc300ae3d67b8ff85c9eca55e10b7389bfed85ec813251c72cdbdc78a652. 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/GBQGW1300012.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x87777318b61eeefe10e3f99143fb8d2d78089312d85d34e5c76fefa80cd6afde. 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/GBQGW1300011.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x40f390a50ef038f3f8e9f9f9e886029cfa87ec38577350bfccf3f815ceeec4b2. 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/GBQGW1200102.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x26eaf4414cf9a914575495a5a763ad0b82b4b900865f39c62f021863822888cf. Chain 2 (Bitcoin): anchored in block 957122 (2026-07-08T03:39:04Z), 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/GBTHS0900016.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xbe9734fdfc565cb2b94acd2fee34efc8023bc09166b745bfa38a008d6d5230cc. 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/GBKQU2290174.