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 0x8b93fe860cc197a9bb8e70aae16975b94f40af8db27d0cba78f3920e8e069530. 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/3060f482-8b06-4e01-a981-3adbd6468611.json and https://artists.proofprofile.net/proofs/artist/3060f482-8b06-4e01-a981-3adbd6468611.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 0x345091045758d8edc7079cf1b650997ee26693d152145bc775f041f277eb2021. Chain 2 (Bitcoin): anchored in block 956656 (2026-07-04T14:03:39Z), 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/US3DF1819444.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x25afd68eff244034b34542f811dc9058ebe4cebe8b6bccd5bdc7a1bd9e7b8e01. 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/US3DF1819445.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x25386c44da7424d4b59753c48ca57fe0f13b633afce28fb9f12c5babbc8c5322. 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/US3DF1819446.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x97e339b88e3fc07f7e8cdf86828eed4537aa34a3f96f64935ba4648a5f2f1aa7. 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/US3DF1819448.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x8288ad645c6b1063b2137e0b75926f13a0a47054eacc98c664be8a76df970444. Chain 2 (Bitcoin): anchored in block 956560 (2026-07-03T23:28:02Z), 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/US3DF1819451.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x37cd7accb22b9a1f09d7dbc3f6c0fd6bdd42d5d079457c28d732e6cb895808cc. 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/US3DF1825330.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x5e296ee74625d3354233273ad24796a61361a7099913e85f76366b82935b34f3. 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/US3DF1825331.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x8239630956f6f5bc7463ac13f4e53693793c6809bfc3d4bdb0096ed081ce5081. 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/US3DF1825332.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xca2750425905dcd9cd47ca22fe5f134468a6375676e60141718d06db4bc64c21. Chain 2 (Bitcoin): anchored in block 956474 (2026-07-03T08:56:35Z), 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/US3DF1825290.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x046083dec8a10686d1a14fdb54dea5abc4a81f52e084d5709194f66384827166. Chain 2 (Bitcoin): anchored in block 957763 (2026-07-12T22:01:25Z), 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/US3DF1825291.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xdb93be0630747f941a164d8b46f2d8293db3871f5987d04f1d67240419a12805. Chain 2 (Bitcoin): anchored in block 958086 (2026-07-15T02:55:47Z), 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/US3DF1825292.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xe0124814ce8b751197461a461560f32174d235f2fa7a37679f73b84df4f91dea. 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/US3DF1825296.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xa7d7cb5372582807a7ab154046aa2b93187d280389dc6641f86b2efd03e32de2. Chain 2 (Bitcoin): anchored in block 958224 (2026-07-16T02:28:43Z), 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/US3DF1825299.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x464b4fedd06a0357417be44fd231742064048becb792a50ed5b4eb6814e28461. Chain 2 (Bitcoin): anchored in block 958276 (2026-07-16T12:20:33Z), 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/US3DF1825364.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x9db90a968132f062eec5c31971c28655c70fa7b8cc2f624aa0f7917e86c175ff. 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/US3DF1825366.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xf979e8930fcbd1f1b0a51a6bda720da9623bea06b7cefd529bc5881e3a910f81. Chain 2 (Bitcoin): anchored in block 957756 (2026-07-12T21:36:27Z), 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/US3DF1825369.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xc66755f1a434927fc68cdaa347f45290cc172742983e19d4d09de2e1a37f1f68. Chain 2 (Bitcoin): anchored in block 957754 (2026-07-12T21:26:22Z), 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/US3DF1825312.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x9852faebdd93b4927439d8fa8deeaa5336e14a1065b4daf159897e7aca1937c4. Chain 2 (Bitcoin): anchored in block 958816 (2026-07-20T06:34:26Z), 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/US3DF1825313.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x812f809512e63e1a2582a234651d2d0de42a37424a51ed8b9f18521c989e0339. Chain 2 (Bitcoin): anchored in block 958176 (2026-07-15T19:54:58Z), 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/US3DF1825314.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x311bafee0b7cc0692c4ea8d67c5c101030e3397b0be65f038bb330fdd4ac8655. Chain 2 (Bitcoin): anchored in block 957754 (2026-07-12T21:26:22Z), 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/US3DF1825315.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xc78c697849a8a9c3d0727b757cd27e46184037f92450d064690fa8facd8d53af. Chain 2 (Bitcoin): anchored in block 958832 (2026-07-20T08:32:11Z), 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/US3DF1825317.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xca9e7af6c60592f32d05c23c18f6fc8ec1af270ab0fd4b358d56a639c7fdb8f1. Chain 2 (Bitcoin): anchored in block 956772 (2026-07-05T10:01:46Z), 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/US3DF1825321.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x5b637c81ed4ecf38a3ec8f6565be22f538433fe9cc74706eb6c13e52ec53ed47. Chain 2 (Bitcoin): anchored in block 958357 (2026-07-17T03:33:42Z), 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/US3DF1825323.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x894dd31103a9af40a931a051f35352c8d73b7c129266fcb94e29d5a6d73d6b94. Chain 2 (Bitcoin): anchored in block 956375 (2026-07-02T16:51:38Z), 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/US3DF1825324.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x7159bb23490426fd61c78d1c3deb463e828f1d1541d38626a0d675bc2920edfd. Chain 2 (Bitcoin): anchored in block 956474 (2026-07-03T08:56:35Z), 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/US3DF1825326.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x0d3729c570476601376de6cd7283117cad19c08b87b41f826f8154f22833a1c1. Chain 2 (Bitcoin): anchored in block 958142 (2026-07-15T12:52:55Z), 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/US3DF1825327.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xd484aa523b54ebad2d57a4df13db2accc0d6503431c544cf316425481bb0736d. 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/US3DF1825333.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x33fd5d25c98a8943cc2d6d74ba637c93113222ef1e50bfde422362d7df79826f. Chain 2 (Bitcoin): anchored in block 958300 (2026-07-16T16:14:30Z), 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/US3DF1825334.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x8d44634feb61755fe519c1df3a433132f28e3086877fe2fe2144ecf88c5b0005. 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/US3DF1825335.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xc845845d7471215abf094aea270478e719ce6749ce5727c031a78ad0e0232d94. Chain 2 (Bitcoin): anchored in block 958355 (2026-07-17T03:11:50Z), 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/US3DF1825336.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x763a006937f77b0318e1d481ee5c776f7f37df77aa323dc12db0614fe73d7886. Chain 2 (Bitcoin): anchored in block 958271 (2026-07-16T11:06:47Z), 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/US3DF1825337.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x353f9888317d40f0a59191759e38b083933cd5fa00afd1059138c2487ec2df8f. 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/US3DF1825338.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x952d34fe6eaa540a191527a2d3a8614d1785cc21a221d1a6d9848ca5565eab49. Chain 2 (Bitcoin): anchored in block 958749 (2026-07-19T16:11:48Z), 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/US3DF1825339.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xa3823f570946bd0b5ad3acc1c5cf1e9e5e5f17d0562855b39c0db0f2d705b9d2. 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/US3DF1825342.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xda1a978e2d664bb8460142385b3a546745c550af766f18d3bce6a36130e6bdb7. Chain 2 (Bitcoin): anchored in block 958489 (2026-07-18T04:13:26Z), 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/US3DF1825301.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xb883cd718283a0a5a1d3ab764c3f08044b107101e35e1d17e5e425519dcf8166. Chain 2 (Bitcoin): anchored in block 956474 (2026-07-03T08:56:35Z), 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/US3DF1825302.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x6de556d44cb268f754f3e8b25d1ae726603c132bef3bcf3fdff36c85d9a920d7. Chain 2 (Bitcoin): anchored in block 958079 (2026-07-15T00:21:05Z), 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/US3DF1825303.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x469e5ceedd738102716ace1759b70cc41f78583109693752c7d4ff41e26aca8e. 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/US3DF1825304.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x4220bfd4aa7e86dabc3b922e72ab82a562a5bf88b74867477c6e5b88b2a854f3. Chain 2 (Bitcoin): anchored in block 958455 (2026-07-17T21:28:36Z), 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/US3DF1825305.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x4380f2d7ccb562377a9488b98484dcfbeac4fe63706f5d9007f041106143ab6e. Chain 2 (Bitcoin): anchored in block 958086 (2026-07-15T02:55:47Z), 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/US3DF1825308.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x22f132a89cd7cdb362e7484bef7b546f607b0d81a8fe8f6131c987e7b0e2f22a. 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/US3DF1825310.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x4ea0268d320b83bb29d926992b300e7332e56c39345cff5dd8b8b8a97ccea31e. Chain 2 (Bitcoin): anchored in block 956402 (2026-07-17T04:22:47Z), 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/US3DF1825311.