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 0x673604aee690c7046c77df67267896acbb62d1334bfb67ebb01e7a8d55f6fafe. 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/800ac4cf-0812-49a0-b09d-280f5579f43c.json and https://artists.proofprofile.net/proofs/artist/800ac4cf-0812-49a0-b09d-280f5579f43c.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 0x088ecffc59e8582d0826cc2638606374ae87da4624dcbda03075ea45d557585e. Chain 2 (Bitcoin): anchored in block 953513 (2026-06-13T12:47:07Z), 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/TCACJ1512543.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xef0998b3ee8d54e84b71844111c962e1798e5bc8e254efce8611290cece06e0f. Chain 2 (Bitcoin): anchored in block 953513 (2026-06-13T12:47:07Z), 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/TCACJ1512545.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xe0a21756be8bad916cc46dd6f48f97fd85a3fa0a55d9a1af9066db9870274600. 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/TCACJ1512546.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x9f3653b139b1a32f63c789783ffb4d9a65b8fb1d3213c3898fa659c55aa4507b. 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/TCACJ1512547.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xf4fa277b21358d8095876ef652a7f10ea8fdeee6db67b413a7c4bf89fa392c5b. 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/TCACJ1512549.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x55d7ce94695ddd49a102ec5f4ca0489da23a08c07071c3fdeb6473044f9f501d. Chain 2 (Bitcoin): anchored in block 953513 (2026-06-13T12:47:07Z), 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/TCACJ1512551.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xd678ca02c391e0545e578617cd845d2b63afaff8b95a882d6fa848d74c055a75. 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/TCACJ1512552.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x4b1653687cc0adcfdb559cd4a761ad0308d1becac31df34aa71e9e5ca77e3530. Chain 2 (Bitcoin): anchored in block 953513 (2026-06-13T12:47:07Z), 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/TCACJ1512555.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x0ee5cbe9bbb7dddf9c99213daa2cb125198133732ed663d1547bd6eab4020008. 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/TCACJ1512557.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x5dbff7704d6e75f616dd9951a319d3885c6e53f50e02ddcd798ff6419dbc2c47. 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/TCACJ1512559.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x5c7ca84efa41bb9e27bceb29759f4aa504d2f37fa899cab35974e6124f6d7294. Chain 2 (Bitcoin): anchored in block 953513 (2026-06-13T12:47:07Z), 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/TCACJ1512560.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xfebd0acb3ca37ee3ce563e304945c169e032f32f4838f9be058a10706ca8940a. Chain 2 (Bitcoin): anchored in block 953513 (2026-06-13T12:47:07Z), 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/TCACJ1512562.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x92fe5d3e4236e5f2a94bcebcab4107de17628c612773ce9919460d04d2298cb6. Chain 2 (Bitcoin): anchored in block 953513 (2026-06-13T12:47:07Z), 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/TCACJ1512563.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xe6669e35a5decfa9bb94a187650ed9cf7dcc47241af44c672e8c43066bd1d868. 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/TCACJ1512564.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x2171c519a86b0f78974276e114c647a8f223e522983d7e08470b233b1cd80df9. 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/TCACJ1512565.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x13e1d34eb686500faa214007a8e9e5f75d562cebf25d8430e763af542a012187. 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/TCACJ1512566.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x4a79fd0a10ee7c5bb70ca7fbfd92e995099bb795360b9a87c5e8f408768c2031. 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/TCAEQ2042934.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xa2c342f0ea68ecf6eb0d734c2c55f638b3dc1fc204a6aa6fe4a0b80646804386. 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/TCABS1366131.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xc92be39de745fd4683f8b7fe9a999234747d3f5dd8005453dd84d620b1192b92. 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/TCAEQ2042947.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x379be9726366081a51f27ef9e41c2a4ced2ec63da01cfaac690b17373a56673d. 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/TCAEQ2042953.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xaf67405e2ea0fbc679b3b874e952a2739297a37576ee9e038891d0bb2a5732df. 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/TCAEQ2042961.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x2c263dfb8ffeae95534b2b17bd0bfa49c8e839d64a7e87dc310e0a9d2c6f2640. 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/TCAIA2458950.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xecd64731e764b50b131135a016da697d60c00128694456551f035e4d251d0cd3. 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/TCAEJ1963129.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xcaf76e70f12b007dad649ea5edc94065d7b59a4015cfbb55126fab37d9f19f26. 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/TCAEJ1963132.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xe088bab5269af9980f581df82898aa374a0d67ecced74680fa7ed06e72efa123. 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/TCAEJ1963134.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xb6fa652195c4bd20178e1b19a2d1cf6a56d4600ab23f10916daf12dfcbb69850. 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/TCAEJ1963141.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xc0357ba0679b6fd4204f27c32dea2069566b73c867e5d5ce6b83b53c180606cb. Chain 2 (Bitcoin): anchored in block 957124 (2026-07-08T03:53:27Z), 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/TCAEJ1963143.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x3ca64f21ac6c828ac79dff2dba465e0ccf668bb4f880a6d28bdca2d3292029a1. 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/TCAEJ1963146.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xa2c342f0ea68ecf6eb0d734c2c55f638b3dc1fc204a6aa6fe4a0b80646804386. Chain 2 (Bitcoin): anchored in block 956891 (2026-07-06T07:16:32Z), 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/TCABS1366131.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x71a1581e9b4e752d6455416fec2f8e9a5c1116338722066303ea00605c22e13d. Chain 2 (Bitcoin): anchored in block 956351 (2026-07-02T11:38:34Z), 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/ES17E2401829.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xe01bd68a3eac7fee64b5129db4852b9fefd08aecb09714ab617d3546cc49464e. Chain 2 (Bitcoin): anchored in block 956302 (2026-07-02T03:30:09Z), 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/ES17E2301807.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xeed4102f97bf9e3e1c97c290b96a3627f40a8d01a8f6f8199bef4bceadd956b5. 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/ES17E2301808.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xfcb9d0a9c97c92cb075128e8bb0548986612944f9bba78170663ea5a66210818. 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/ES17E2301809.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x04fa49162d2719954ec5d24ada1139ebb6d789976474e12ac5394a8c868d2092. Chain 2 (Bitcoin): anchored in block 956302 (2026-07-02T03:30:09Z), 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/ES17E2301810.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x08e72c2e5b4bf9135c248e042065fa0daea067c934c788e16c73dc4937367b56. Chain 2 (Bitcoin): anchored in block 956351 (2026-07-02T11:38:34Z), 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/ES17E2301811.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xc5b50b6eda6dc95c829fa4cfffd41bfcbbb2ec6f3fabe3e9f96175eafebae6a9. 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/ES17E2301812.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x6cd705a03e518faab37002fa5c4fca68985ec34d055f4231d25ebae30d43271e. 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/ES17E2301813.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x36e4174a0d920a8a2f45161bd81b8f8d419088907d24c5001ea1428f3044e533. 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/ES17E2301814.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x17058f03cebd37e9dd6f97115648229dd533fa4533f4e93e24f2f3460bfb5581. Chain 2 (Bitcoin): anchored in block 956302 (2026-07-02T03:30:09Z), 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/ES17E2301815.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x76befcf9986ffcb057864c96d8f9ec40ebcf1303f0868e8b734ca8942e0f2a77. 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/ES17E2301816.