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 0x2c2667cac606203faaa1a8204b7e96ffc8e47c5c477fa9a2fde959dbf2d4135d. 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/7016c0a7-6be5-4cdc-934d-f96897894a87.json and https://artists.proofprofile.net/proofs/artist/7016c0a7-6be5-4cdc-934d-f96897894a87.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 0x402a42305a60fb0c870d5fb15da7079611204c7671753b67a2b9cdc2197cd4b2. 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/CAN112300229.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x81a4ee38a4c7f4e03498d57223dc9c747d747c8606a8cc2fcf807fcdce088dac. 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/CAN112300230.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xee53993b8115fcfac131aad4b1b4f5af2dd69588528a680cfb9c614189b6df03. 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/CAN112300231.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x886ee067bf63fbc0f9d3d54b32976fa6aed3a65ee6c51abc9baf00fd8ab00577. 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/CAN112300232.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xb95f21e07c6a9c498a1c9eed8ee9189554e3679cccc28adfb5ebadd95ad22595. 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/CAN112300233.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xf4918bddc1eafed26e84efbbff2d617284755642405226f9d08b677bcb785dc9. 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/CAN112300234.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x53675d1022fb6579ddd63839c03afe694e4c119518164481e75e1c56cbf7cf83. 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/CAN112300235.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x64331d27ced1071980ce5fc003f3ff05597dced53b26112b2a656760734725c7. 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/CAN112300236.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xd226a70534d49f44535eee8fe62490b8d2050e6d1208e7ff427632a8254746a5. 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/CAN112300237.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xc3da5ba8fbce2ff5f508ca1c73ec73a46f3a5c03d710437fe58dd9e23b4ec586. 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/CAN112300238.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x6b939cd7c6419362d3ead21b5e8feadc7a09e89d7eb359a6776254fabf2d50a7. 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/CAN112300239.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xbee4e91f985e6a9d2b2a3d0241222d3917bdb74d79a015549fdb242436c9a130. 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/CAN112302110.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xd5995d40e31b057de36e83f212d6c24a8cf4a95b473d61c182c2d5c645123fed. 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/CAN112302112.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x789ae911df3e2eb9379b89c4f81b857f990708852100d027f84a8138f5a91676. Chain 2 (Bitcoin): anchored in block 957046 (2026-07-07T14:04:01Z), 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/CAN112302113.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xaa3efffcf951202f433a362b581279d38706ce10ab5d4a4bb3cb2c74583525ed. 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/CAN112200491.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xf6c1b52dcf8effba063dd2fac4dcac56760f48f06b9e8d40eed9c29ab0b71170. 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/CAN112200494.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xeb4247bbd30afa2588588f0edc89b3043a346c8677d9c53f6ec27458edc5bd04. 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/CAN112200493.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x3172f5a78d8aa6cc9f8a43d398741fdf81da1c2004c8e0c4111dceee73240208. 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/CAN112200492.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x28e9253e1201c1d8a098350a96aeb7a1346c4d4ca7c2157b51211add5d779952. 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/CAN112200480.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xab7cba081030ee25f9d01b035a4015afd56e373531eecfa1029d6f5f3011e967. 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/GBKPL2155843.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x2b2e62ccef074e5f560937499a6fd6830b7e81ca8b736de61b2776939a0459d9. 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/GBKPL2162815.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x32ee56541ea13ff3c5ef305da8183c2d0a657c68ef04b2048b6863389f3ad4f3. 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/GBKPL2160479.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x22e19ddf43c9f2647c04c159b0d3b20fc745f8a0e3d5487b874bd2a7521ba329. 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/GBKPL2033564.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xff0d0edaf6d6e896c5bd63a03b62f36c44c4b3ecffd1ceb184ad3dd199e591bf. 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/GBKPL2025952.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x6208b2333b46c7a4e9b1b5d7ba8cdb440ac4de44ee7fbc592e209c5bdecacff2. Chain 2 (Bitcoin): anchored in block 956349 (2026-07-02T11:34:59Z), 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/GBKPL2143714.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xea9cbbc4a92740968a01af246337e7b5da30b9ad5249b0dc56993d2007d5e040. 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/GBKPL2142551.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x81b464e2d4ef15695cb7159f6c062bb5ea625bcce5b6f7c427bd116adb563972. Chain 2 (Bitcoin): anchored in block 957819 (2026-07-13T07:53:33Z), 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/GBKPL2143715.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x09b97ee2df1b1d2740f36f6d5a5ee299721eebb83d1932609f172153a3deaacf. Chain 2 (Bitcoin): anchored in block 956894 (2026-07-06T07:53:57Z), 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/TCAEX2005106.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x5b90dd8995019f1db0676b52bca6da78f547809af4130622c160a2cf6eb7f9c4. 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/QMDA62457463.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x5b90dd8995019f1db0676b52bca6da78f547809af4130622c160a2cf6eb7f9c4. 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/QMDA62457463.