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 0x584542317b3055d32d70c7c851c232e77f763cff59ebeea87890e4073b57c9f2. 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/05a0186b-5fb8-4df6-ad3a-ad4400d792e5.json and https://artists.proofprofile.net/proofs/artist/05a0186b-5fb8-4df6-ad3a-ad4400d792e5.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 0xc69c1a873fb7866070aaf5f4d30c9dac74d1b549172fcc97d1444f15f5299389. 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/US7VG1604609.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x82b198556cf33a62bb0b52f1ea3aa7315ca06307f0bc7790f8d61f0f17b29136. Chain 2 (Bitcoin): anchored in block 956738 (2026-07-05T04:47:21Z), 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/US7VG1604610.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xc24ceb90a80e208d3ba824cd18fdf53244426547b4e3087935f8edd1ba7f7463. Chain 2 (Bitcoin): anchored in block 956725 (2026-07-05T01:12:41Z), 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/US7VG1604612.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x6a62e0ac39e0331e6c75c7096a6d7165c12885b470e7d0990e9238b4622090c4. Chain 2 (Bitcoin): anchored in block 958349 (2026-07-17T04:41:20Z), 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/US7VG1604613.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x7370fba1ee22aab5b0b78ca00880f89384d0ead77481cbe9f374d48c8739e8fd. Chain 2 (Bitcoin): anchored in block 958761 (2026-07-19T20:45:16Z), 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/US7VG1604614.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x28d1f67ec667b42409488071fd158c0d6c485e8b8159b267834e9dd5f80fc17e. Chain 2 (Bitcoin): anchored in block 958783 (2026-07-20T00:06:38Z), 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/US7VG1604615.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x93dd24e56c03aab621a8c5f077721be41cfb145478dbece846395d4d2eebb28c. Chain 2 (Bitcoin): anchored in block 956639 (2026-07-04T11:19:20Z), 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/US7VG1604616.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xdab54fb2680d076335a5b90fe4a94b6d2e7bbbcabafbc756b4853bc3fb9039be. Chain 2 (Bitcoin): anchored in block 958700 (2026-07-19T08:09:50Z), 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/US7VG1604617.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xaa929b6859324972d5d9d0672671d00712c951a1ec8c48a4a93cbfa310aac558. 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/US7VG1604618.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x259a50523d44debe91a2390056b8759b9c1629fb07324cf568f7cd2dbdfd1886. Chain 2 (Bitcoin): anchored in block 956826 (2026-07-05T19:27:56Z), 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/US7VG1604620.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x3e1af9a3de391765629078396335a4b97d3802b6a5de05c86e83e7b5da8e79da. Chain 2 (Bitcoin): anchored in block 958346 (2026-07-17T03:56:16Z), 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/US7VG1604624.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x318de9cd1081637435bada2363cfad08a71a5bc9ea35d6e4d88b1227048df4db. Chain 2 (Bitcoin): anchored in block 958695 (2026-07-19T07:37:00Z), 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/US7VG1604625.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x5c80a8628c3b2bbc3022ddd649ae09168cb213b628c8ed8556dd8b9f0adaddbd. Chain 2 (Bitcoin): anchored in block 958703 (2026-07-19T08:36:12Z), 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/US7VG1604626.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x419f83ce98a3ff289ec8482a49371a39ca858976e6631ed98696a57caad941a8. Chain 2 (Bitcoin): anchored in block 958734 (2026-07-19T15:39:53Z), 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/US7VG1604629.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xac8b17d82fde73d98005f1d746dc7e81bfa58a81a96aaf891325e4252912aa99. Chain 2 (Bitcoin): anchored in block 958774 (2026-07-19T22:25:27Z), 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/US7VG1604630.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xf7aacb09b1512ba49fe0a2c0371c534789d85bd9463f0400c5b3d5aba87f1f14. Chain 2 (Bitcoin): anchored in block 958771 (2026-07-19T21:46:39Z), 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/US7VG1604632.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x18611dc2ae83f047c8a3621fadf4be62eced95d9c631a38fabd5401e138fba80. 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/US7VG1604633.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x956fb35731bd96c79ef192387584cdd6f6cf6ef393ba947979ad2c50a0c361b0. Chain 2 (Bitcoin): anchored in block 958350 (2026-07-17T04:25:11Z), 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/US7VG1604638.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x08aa13dbeed510fa74cc2f14ed1ff27273b0136a3f1147f72fb0857543b42ae2. Chain 2 (Bitcoin): anchored in block 956725 (2026-07-05T01:12:41Z), 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/US7VG1604639.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xa2ea5798cf0ae0cf31e61d4328bf7c7d76194bfb87a9a0ccd01aecc0fc9a0ce9. 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/US7VG1604641.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xd626e2f2bf02daad6370360c5cba1e5e1aa83f624a06897c194016fac74dc7d8. Chain 2 (Bitcoin): anchored in block 956725 (2026-07-05T01:12:41Z), 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/US7VG1604642.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x77a7b63758ed2dc8083ae6e76e5150604f4f6580bea7374e5c961af7f18b1d4d. 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/US7VG1604643.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x9d13f171de9056925b9740c2ba08496474a87126cb56d104c978e85d904752b9. Chain 2 (Bitcoin): anchored in block 958480 (2026-07-18T02:58:58Z), 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/US7VG1604645.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x4f8ae561aad1e628d435295e22805fbda9e2270460cb78b15433f38db46c4d14. 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/US7VG1604646.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x469c17c3e310ee9d0c7f2919f1a6385e666734448b1e70501f5bd0926899d2ef. Chain 2 (Bitcoin): anchored in block 958681 (2026-07-19T06:14:54Z), 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/US7VG1604647.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x37d53e94a2be8821a74ddde4b2312a8ba417374f5a8e55c45571f20a40dc355a. Chain 2 (Bitcoin): anchored in block 956738 (2026-07-05T04:47:21Z), 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/US7VG1604648.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x368e47d59c47e511b6d7121c47d366c7e4de7e7c706cf781a5b79e24ef899897. Chain 2 (Bitcoin): anchored in block 956725 (2026-07-05T01:12:41Z), 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/US7VG1604651.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x1de90df8f3d775bf8ebef6479ff7d4801971229a084f847d37462918dca5f91f. Chain 2 (Bitcoin): anchored in block 956826 (2026-07-05T19:27:56Z), 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/US7VG1604652.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x2d0f4126b96aff2dd85a79a41737f1766f6f4956a873e14262f45e080bfc07a9. Chain 2 (Bitcoin): anchored in block 956841 (2026-07-05T22:14:35Z), 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/US7VG1604658.