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 0x68f72bd41eeea1f336a4bd4991fd2d5c496cac0902f622889f700dde79ce9680. 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/d50be1ec-93da-4724-b7a9-1eae6b1eaa93.json and https://artists.proofprofile.net/proofs/artist/d50be1ec-93da-4724-b7a9-1eae6b1eaa93.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 0x4bbc88b4d40c7b220f57370a01dfbd61b5a2fa9be9ee6f5a4b5d68f52ae17530. Chain 2 (Bitcoin): anchored in block 956576 (2026-07-04T02:06:47Z), 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/ESA011948435.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x7bb3adeebae9dc4a89dc39dfc5097ce51706fa44677a704549e71be8c9bf14ba. Chain 2 (Bitcoin): anchored in block 959010 (2026-07-21T13:57:04Z), 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/ESA011857667.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x1fe1347ecd4f68ab7f6f24a9f0e3a9463c1150a1b4705f27a022bc3429332772. 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/ES47E2006424.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xba728bd5839038b84e44df806f5533e406bceaac4c9d40d5b58a4ebd4c9d747c. 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/CA5KR2322235.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xb4a7d5242c4ee18688d5fd5824203aa94679c6df6951544e004577852bb20b59. 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/GBLFP2378904.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x507a170bb8637b63256c32433b2d3d18b806228be9f081e66253040293cbb172. Chain 2 (Bitcoin): anchored in block 958622 (2026-07-18T22:58:55Z), 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/CA5KR2370550.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x75aa8bf335fd1db5586e671d62b62c4f39030387a6516e1fd98acebaf594cf40. Chain 2 (Bitcoin): anchored in block 958176 (2026-07-15T19:13:35Z), 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/CA5KR2370511.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x3c089048d790fb682a35310a0fb1d62d19bc49eae79fb95fb3c86bb5c93c25f4. Chain 2 (Bitcoin): anchored in block 958823 (2026-07-20T05:51:25Z), 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/UKXN22302656.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x377f76d3a281cb3ff1991a40ab2e0902b10d84fd34fa7d4c3e8608cca90b777d. Chain 2 (Bitcoin): anchored in block 956822 (2026-07-05T18:48:28Z), 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/ES75E2308333.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xe8da2cbeefc1606a9e55bfdcde787df10c41a7624d7f15e1b8340b93fecb3043. 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/CA5KR2455414.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x0164108cc3a43a5edb97ed0f64b6408afd8672c0cce56746c0ddabbf2696ad88. Chain 2 (Bitcoin): anchored in block 958724 (2026-07-19T11:19:01Z), 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/UKXN22413074.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x20291e076ed79513d5e00271371055286163ebd4446e524fd72c1c8c6e358152. Chain 2 (Bitcoin): anchored in block 956772 (2026-07-19T23:53:25Z), 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/UKXN22497340.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x6c403e474d9468b6144085360c9a5d42fc897deb5aa957a537ef4cccf3806394. 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/GX53U2314096.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x0ddf34682b0e78c45aebdecc97fe211f338d3701b2f26ae99514c02e8a6fe054. 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/ES75E2411668.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xebd4192433594576627196ae2b6f2e18b6f9b22e69bb1e13f343267c0d637574. Chain 2 (Bitcoin): anchored in block 958793 (2026-07-20T01:33:54Z), 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/ES75E2414565.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x648234f1ad33b720f84f6bd2b784382623dc78d17a1cbae4ce4c3e85715fa199. Chain 2 (Bitcoin): anchored in block 958444 (2026-07-17T19:12:23Z), 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/ES75E2501167.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x3ce82725de70457da22577a4953f497ee10aa469d3003ca7749a883dea748847. Chain 2 (Bitcoin): anchored in block 958377 (2026-07-17T06:48:00Z), 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/ES75E2505920.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xcecd705d58f32919cb508758fc05f2a90d19c54eca0661e36d64d90aefcebaba. Chain 2 (Bitcoin): anchored in block 958110 (2026-07-15T06:57:12Z), 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/ES75E2505922.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xbcd83c6229143dfcc8d21ab6e344808a593f08765397c4c5857af9dd191609ba. Chain 2 (Bitcoin): anchored in block 958383 (2026-07-17T08:20:01Z), 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/ES75E2505923.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xef27673a08007323f07a1f19d18b8d127adad4cb7dfd10d7d99f991a07c6e4b5. Chain 2 (Bitcoin): anchored in block 958106 (2026-07-15T05:35:13Z), 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/ES75E2505924.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xc83725b30917035f0ee62e2833084e85b904622db6c0e0c2505dd77f8f87c9da. Chain 2 (Bitcoin): anchored in block 958196 (2026-07-15T22:04:49Z), 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/ES75E2505918.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xd6b3b7429542f36a2d64dcc55e504a7f71d9fca64aaea96d2f21ff7055165c44. 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/ES75E2505919.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x3ce82725de70457da22577a4953f497ee10aa469d3003ca7749a883dea748847. Chain 2 (Bitcoin): anchored in block 958774 (2026-07-19T22:05:24Z), 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/ES75E2505920.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xcecd705d58f32919cb508758fc05f2a90d19c54eca0661e36d64d90aefcebaba. Chain 2 (Bitcoin): anchored in block 958774 (2026-07-19T22:28:14Z), 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/ES75E2505922.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xbcd83c6229143dfcc8d21ab6e344808a593f08765397c4c5857af9dd191609ba. Chain 2 (Bitcoin): anchored in block 958857 (2026-07-20T09:45:25Z), 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/ES75E2505923.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xef27673a08007323f07a1f19d18b8d127adad4cb7dfd10d7d99f991a07c6e4b5. Chain 2 (Bitcoin): anchored in block 958373 (2026-07-17T06:09:33Z), 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/ES75E2505924.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xe6840a4798b2e281a90f991e31f3c40eaa67ef85f481fa742cfed53d047e33bb. Chain 2 (Bitcoin): anchored in block 958397 (2026-07-17T10:29:45Z), 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/ES75E2505925.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x84db0700c561a09cf42d1842098da1b588f90d33e7a6c017172a60a086badd34. Chain 2 (Bitcoin): anchored in block 956889 (2026-07-06T06:56:49Z), 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/ES75E2505887.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x3f881b3d535005814e6d5176fa2c4304806978fd30e4136a8c7a51aeb24046a7. Chain 2 (Bitcoin): anchored in block 958185 (2026-07-15T18:19:04Z), 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/QZG2X2420769.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xd0d5ea09df8a2457791a1400f4039757005e9a1a830d561e0d7d242b6a95078c. Chain 2 (Bitcoin): anchored in block 958110 (2026-07-15T06:57:12Z), 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/QZG2X2421514.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x747ce386d6086edcd047095bb1d8bb1bbcddde1441e9a27fa4f63d2bea267534. Chain 2 (Bitcoin): anchored in block 957785 (2026-07-13T01:55:31Z), 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/ES75E2509774.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xe2e9d2e8fe08cbb31aa922695fb9f7687befb2a9d3ea13d7a12e8309b2522b11. Chain 2 (Bitcoin): anchored in block 958166 (2026-07-15T15:55:19Z), 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/ES75E2510487.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xfe12bbb5d8767e654c5cd58acc90099fe6cf38b3c0550d127b0ab2c262cffee0. 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/QMDA62253413.