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 0xd0cdc1204338db5e98775a75f5ddf02e10d838dd02ca2ab1eba49039ee9689b2. 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/9e236788-12bc-4dbf-92fc-e621c68ce846.json and https://artists.proofprofile.net/proofs/artist/9e236788-12bc-4dbf-92fc-e621c68ce846.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 0x804807152446f4c56bb2278694486ce5c4b62da084305122ec45b941725da30e. Chain 2 (Bitcoin): anchored in block 958870 (2026-07-20T13:31:23Z), 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/ES30I1200001.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xfd90f755438487183cdeed2b1cfe051167d9b5300db6948917dc46b3437dfe7f. Chain 2 (Bitcoin): anchored in block 958857 (2026-07-20T12:11:55Z), 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/ES30I1200002.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xc1d1a420dcdc4d3bfe1c9d9c1d7a915b834e070df4fc542549d840817224619d. Chain 2 (Bitcoin): anchored in block 958137 (2026-07-15T12:05:13Z), 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/USCGJ1400810.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xe76ac91cc56bef1552255f0654df988e6c27a2342c2fb4034d727b665ab049df. Chain 2 (Bitcoin): anchored in block 958800 (2026-07-20T03:10:43Z), 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/USCGJ1400814.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x8fe422a1323f70c50fa2762c751fbfc2f0194270a84ec2df7a805846d9a3ba5d. Chain 2 (Bitcoin): anchored in block 959023 (2026-07-21T15:22:58Z), 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/ES32D1700002.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x326c8c8654479e7256a7c00fa29c0656537affc4cf61e9a7a311c94f84939bf9. 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/ES32D1700004.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x997ee77ce85d32934000175144ffee38455d7fa6c180962e51d88dd8789610af. Chain 2 (Bitcoin): anchored in block 958985 (2026-07-21T08:39:15Z), 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/ES32D1700005.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x16dbdef73716654c9ebd1de245add6acf8723280c8064503df0ffdd45c441576. Chain 2 (Bitcoin): anchored in block 956500 (2026-07-03T13:55:21Z), 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/ES17D1900675.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x3839bd19a8509c9e5e3f73a33bfb764190381199825ea8aff85169f58ee75103. 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/ES17D2101363.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x9eb52c7205d136edace0a7fb04c05d12ffb9da5cd0d6eea6769f86bc32852618. 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/ES17D2101274.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x7d448b6cf97fca8f29b512e11284d0394544be4e9cf42d097a6314aa02398a96. Chain 2 (Bitcoin): anchored in block 958176 (2026-07-15T19:51:02Z), 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/ES17D2101385.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xb8d6d33364256a35926255e4cc17fa0ec5fa68ddd4512184629f878e5b528e3b. Chain 2 (Bitcoin): anchored in block 958690 (2026-07-19T07:14:39Z), 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/ES17D2101384.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x72d50280e875a3f2c847be33531bde4c6dc737d5eb6d38bd5a4cb87485b78bb0. Chain 2 (Bitcoin): anchored in block 958842 (2026-07-20T10:32:51Z), 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/ES17D2101388.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x64a7b34b5129f6d2d9afac362159dcb8690a979372f49cffbf144e36523b2fa1. Chain 2 (Bitcoin): anchored in block 958935 (2026-07-20T22:08:19Z), 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/ES17D2101387.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x0bd34de3561273c2366365fa38df4faaa46b70987342eca83fb9a68f162aa34f. Chain 2 (Bitcoin): anchored in block 957801 (2026-07-13T04:17:08Z), 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/ES17D2101393.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xadf2c0d1b955540cf8711eaf4fcd45574497bba6f5f3445da5a950d5e7e19cb2. 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/ES17D2101390.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xa6aefbb5208773ea06812ed4c09edba38359ae2099a25f92f50e117bbc8d9334. 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/ES17D2201905.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x6ee4fdab2a3e6e91466c7048f0ab5b2e5dc43e352f9018f1a5eb15f9ff06523a. Chain 2 (Bitcoin): anchored in block 959008 (2026-07-21T15:00:10Z), 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/ES17D2301953.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x62f7bd5c0b4926ab6afe5aaf33ebd310e6d0e044ba536b6afefce42143fb438e. Chain 2 (Bitcoin): anchored in block 956420 (2026-07-03T00:42:11Z), 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/ES17D2301958.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xc3bbc3465a47a88c823fb6ef78d764389c461e86053db5f72334de99e2f52d0b. Chain 2 (Bitcoin): anchored in block 956420 (2026-07-03T00:42:11Z), 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/ES17D2402312.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xd4534e4470dd4e99332ff1d361e6207519d0271ab7101c90fcca8db0090e3d3a. Chain 2 (Bitcoin): anchored in block 958137 (2026-07-15T13:00:07Z), 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/ES17D2402313.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x62b8f5d4bbc1bca54498f78a71ae0d750ff095925ec3a08ebfb298d8d7e79dd0. 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/ES17D2101386.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x3839bd19a8509c9e5e3f73a33bfb764190381199825ea8aff85169f58ee75103. 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/ES17D2101363.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xb28eb0f21e1df224ff3512c8038e23101754a53080f65b095f6d76a7278af14d. Chain 2 (Bitcoin): anchored in block 959052 (2026-07-21T19:50:27Z), 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/ES17D2201906.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x2bad112a7f42813c7599c4de411e1665c93e93a472477a6a330519dd445cc9fb. Chain 2 (Bitcoin): anchored in block 958544 (2026-07-18T12:14:37Z), 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/ES17D2301955.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x2b69a5a294c1f0dcdb845f75ba13e4601b98796536fa9b14856a39b50510c527. 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/ES32D1700008.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x734dfcc3aaafe3fb17109f6fd05a1429da4f91cca3c587f0123d3dd06052f97a. Chain 2 (Bitcoin): anchored in block 958203 (2026-07-16T00:26:58Z), 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/ES17D2502741.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x734dfcc3aaafe3fb17109f6fd05a1429da4f91cca3c587f0123d3dd06052f97a. 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/ES17D2502741.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xc88f7651f5e5e4afce85332b5ac86b6f5b9bb244b0c039732a988af10b225a32. Chain 2 (Bitcoin): anchored in block 958157 (2026-07-15T15:44:02Z), 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/ES17D2502785.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x84d04a5722015bfc219c85605edef637ecaeb69bf6c2b32e92ebabc5308da34d. 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/ES17D2502766.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x293232ba9bc755fb68472f705fb82fe14093121288d7ad679b2aa9e64543cb1e. 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/ES17D2502786.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x5954d3069b36791ec915bd8907958b840e90f973426caa58dc3a02cb9fcd9544. 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/ES17D2001215.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x4b93132a557220e2daf53e33ce4913a65368898b6360bd2af3fb78124f6ebfcd. 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/ES11D2100506.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x1357f1060d43781afab17bcbf9e9ab566c2de7f2e0de09d4b491293991308f4f. 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/ESA011925977.