1. Compute SHA-256 of OTSCanonicalRecord value → must equal OTSHash 2. Open OTSProofURL → extract Bitcoin block number → must equal OTSBitcoinBlock 3. GET OTSBitcoinBlockVerifyURL → block must exist at that height 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 0x1a09e6a67783d4444a412161b82e3b9a245e6621e845a9fbdc826cee4d64fb13. Chain 2 (Bitcoin): anchored in block 953423 (2026-06-12T21:20:00Z). Bridge: the canonical record inside this Bitcoin proof contains the same CopyrightID. Verify: download https://artists.proofprofile.net/proofs/artist/c68806c0-8202-47cc-aeec-b34457366734.json and https://artists.proofprofile.net/proofs/artist/c68806c0-8202-47cc-aeec-b34457366734.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 → block OTSBitcoinBlock must exist at that height 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 0x01d5da1163e6d82606d7498760c9eee25398713cc4d948bab3fe3b7e8397d26b. 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/USA370980037.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x026e4e8beb83ad43ca073fb4b00e30dfcac04697542e2fe8667ff5f4e868b921. Chain 2 (Bitcoin): anchored in block 956485 (2026-07-03T10:53:04Z), 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/USA370980038.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x51ac8d5609ba3994723a446218360b1976a541ad68d441492552289e15013a3a. Chain 2 (Bitcoin): anchored in block 956634 (2026-07-04T10:04:33Z), 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/USA370980041.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x14987797d19fa5e9753cfcf04ee4bcb9a7365fafbff1283d3994923bbe09d715. Chain 2 (Bitcoin): anchored in block 956856 (2026-07-06T01:25:57Z), 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/USA370980042.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xb22c3e799a7e596ab0074ffca6deb9caae379032591d12891fdf482f5e7d267d. 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/USA370980044.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x9b4444ea6221e54e381a35910f74f2b571a6285b2146990ff53a0f1f8092d7d5. Chain 2 (Bitcoin): anchored in block 958319 (2026-07-16T20:12:32Z), 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/USA370980046.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xf86d5d5f2a985927e3519d96cbc779e098f3b1c275f32ec6780dc1cb23da394b. 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/USA370980047.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x70bb1080d0eb4c60a785e2ad12bbb4c495f8d31cff11b8c42cc3291a37728c39. 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/PTVI11000207.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xbad502e8efa1994376c2f9f234b46c13f7a5ecb63f394406af9a600bd12f26e0. 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/PTVI11000208.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x746145ae02d45c12ea2baaa62d1a46942e1fa7299073bb938f618246378d49ec. 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/PTVI11000203.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xf91c36e8df996e0e04f781361c10c90252ebf8afb310625e895c88941fec3819. 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/PTVI11000210.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x0c8518c0bad002185245fb65197c7da2204cd017d78bcd975c5b63cffe1e0750. 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/PTVI11000211.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xe3112912b13a94cee3e0da4cecf1454ba1fa4231590da3fdb9f012408297c80f. 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/PTVI11000209.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x7b34ff7f24a19df075928fe4b98cc936bb8682083ccecd52a55f78c7c8fe2cc6. 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/PTVI11000202.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xfcd535d5c8b5c01dcebf4fb7310675d40614151d3bb6db117c76385d3b81664f. 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/PTVI11000199.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x26e740656efe96aef8da971f8f0778aca0ea05ea9fe34175fd579ca7975704a8. 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/PTVI11000200.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x807a1481a3d361fb1595f12485b842a73e79d1f675d1f38958b2161f14112208. 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/PTVI11000201.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xbcd4d8e4f7ebd86e89da8f26394a6c507fd8a2cf1cd55339912ee70980ef7f94. 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/PTVI11000205.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xb8a349c39619a84ee04d806ffd87ea93ba959a0eaa4277a1320874473a16e115. 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/PTVI11000204.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x5dcf4ec3c925b288380cc837345def085415e5168d8c92667088be2bf96f688b. Chain 2 (Bitcoin): anchored in block 957899 (2026-07-13T19:36:39Z), 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/PTVI11300677.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xdf245bf16f9e844d17d73aacc4142c5a8691b49da2f31676f11023c3a7b7ff16. Chain 2 (Bitcoin): anchored in block 958234 (2026-07-16T03:46:09Z), 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/PTVI11300684.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xf66150a5047123871e29732cd1f9420675052d8bf6c0ef3acc9846f1da48334f. 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/PTVI11300680.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x7ac7a6d1594233926590a2724ebe887face481398cf24064e4039ec90d2e68cf. Chain 2 (Bitcoin): anchored in block 956857 (2026-07-06T01:26:17Z), 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/PTVI11300686.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x8ec3082b63f3f76c545870acd8eff419a71a854a4b3c3af047148bdc6b14cf1c. Chain 2 (Bitcoin): anchored in block 956440 (2026-07-03T04:03:57Z), 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/PTVI12300207.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x2b4967f40af67b85bf4b641385bf11fda8ce912f586d55f3d3de3411577f4705. Chain 2 (Bitcoin): anchored in block 956440 (2026-07-03T04:03:57Z), 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/PTVI12300209.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x1c2367ee37ea1b1795c4271c06a6c3d7b3d318467a8074af149d35c9490129d2. 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/PTVI12300211.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x05476d333f180340c67ba08d0708d59932be93cf4e3658d36f568a3d2b24aa71. Chain 2 (Bitcoin): anchored in block 958194 (2026-07-15T20:32:27Z), 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/PTVI12300214.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xb2af2df26de913abc88671ffffa405246444fdf864899d9d8b884ebc59291e96. 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/PTVI12300215.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x746145ae02d45c12ea2baaa62d1a46942e1fa7299073bb938f618246378d49ec. Chain 2 (Bitcoin): anchored in block 957120 (2026-07-08T03:22:41Z), 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/PTVI11000203.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xe3112912b13a94cee3e0da4cecf1454ba1fa4231590da3fdb9f012408297c80f. Chain 2 (Bitcoin): anchored in block 957120 (2026-07-08T03:22:41Z), 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/PTVI11000209.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xbad502e8efa1994376c2f9f234b46c13f7a5ecb63f394406af9a600bd12f26e0. 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/PTVI11000208.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x084c5cf5384e2397ff2dfe6f4e2706e44572a054154635e1620b7c12680a0bc8. 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/USA371026023.