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 0x6dac909af77b48f4de1fb0970097e91305ed2d15c48566fc8a759d1680a5ca4b. 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/c1a84b35-e152-49e3-b934-956f5611678c.json and https://artists.proofprofile.net/proofs/artist/c1a84b35-e152-49e3-b934-956f5611678c.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 0x9462fe4a982f054fae96307dcce959c813017b1c3df3595433017c0c48cea8aa. Chain 2 (Bitcoin): anchored in block 959026 (2026-07-21T18:34:33Z), 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/US3DF2406601.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x310023ce4d293903ae310f72bdb9040a8144db413794b246fa34ecbfe5661367. Chain 2 (Bitcoin): anchored in block 958228 (2026-07-16T05:19:27Z), 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/US3DF2406604.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x97635ca1bc994fba2474638a5104a0ec790a2575762cb43c166059b9e317948e. 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/US3DF2406606.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x230c1cb4c7d8cbbe1908a14af25705592c9d06ddbdf1d8b94db107168fa7d446. Chain 2 (Bitcoin): anchored in block 958303 (2026-07-16T23:02:17Z), 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/US3DF2406607.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x1d1674b38cb8a05d682eac582e30f62790beb20dd2be08516ef808c54e13ad8b. Chain 2 (Bitcoin): anchored in block 959034 (2026-07-21T16:34:25Z), 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/USY251510241.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x401114c15d6d3be003cae5e2573044d939c2ebd0cf286dd658c595a02d9f147e. 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/USY251510242.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x0d64099729542e3c60721efffdde03fc0b10dc84a670116ff21a7b0cc2a8a5b0. 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/USY251510243.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xff7907b7aef37ea4bc4689a568d9d8fc3f8c49b54ec5520546f36399c89e2429. Chain 2 (Bitcoin): anchored in block 958955 (2026-07-21T03:03:40Z), 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/USY251510244.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x75fd366f9a240490934eb42d1c57056d56dffc7ba9be4c0691e7c9a50c168855. 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/USY251510246.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x23b43a5b5fd55a6cf49b043b3ab86e733a176323c9c64116433b9ff61ae04b7c. Chain 2 (Bitcoin): anchored in block 958541 (2026-07-18T11:37:54Z), 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/USCGJ1871623.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xf7dda6e1891550197fd035753e8c10444358a3f5d97b9e3255bbfef5e91bb3f1. Chain 2 (Bitcoin): anchored in block 957531 (2026-07-11T06:55:18Z), 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/QZDPF1801487.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x46afd6f573f2f1bb103c033791ab689e8da608d13e6a13f41f47bd54531c650f. Chain 2 (Bitcoin): anchored in block 958631 (2026-07-19T00:50:09Z), 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/QZDPF1801483.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xe7610e1f895ffaeb9fb266d115426c7f81f5a8820c9a6d887d87193bdd265d14. Chain 2 (Bitcoin): anchored in block 957546 (2026-07-11T09:35:53Z), 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/QZDPF1801485.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x9f4c36158ba27cb05e2561a63cfc7cee25f30a597869a742c371dc22c83d83de. 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/QZDPF1801486.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x99accf3b9f63670f16531de2e02338ba2e55775401100bd133a654a96ed5a417. Chain 2 (Bitcoin): anchored in block 958245 (2026-07-16T07:00:13Z), 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/QZDPF1801488.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x37c4387497d87ee9d44769b51263e637b025a1ebd954fdc2c0a098e45dd7bdff. Chain 2 (Bitcoin): anchored in block 958208 (2026-07-16T00:35:26Z), 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/QZDPF1805757.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x5eb514824a6a28c0b4880d7a3a4325bdfdcdaae10771084b0bfe292b178bc710. 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/QZDFP1839071.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xafd55fb78a777bc023acd3887fe0576f5e26175b647877b7fdee24a9191fbc1f. 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/QM3DF2114382.