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 0xe7108605ffb2a3179a4bfc384b242f0a6ecb6bb1c383a112323652e157cf2ca3. 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/f6983e28-ae97-4593-957b-5eb03dce4e50.json and https://artists.proofprofile.net/proofs/artist/f6983e28-ae97-4593-957b-5eb03dce4e50.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 0x57b30546644abcd3627ab9812aad5702bbc55825fcdbd1d9ab4fd73a9c2eca75. 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/QZYD92402297.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x461995790957f72e36b3c3eb456415d7dece8221172fa24001232d94a6d23d1a. 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/QZYD92401722.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xd25e84f6062744d136b7d6c5fcdcecee3348a9e586086a9c19b0394f6e5797df. 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/QZYD92401725.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xd642d3ce3a68f768c4ed2863f2534f6b9372d7aefabaed2d2927e245927fb526. 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/QZYD92401726.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x706c567d9220c29c715cbd60ed9d1292fc4409d68994013ee483cfa2b2a88302. 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/QZYD92401723.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x778c0c6948a627929c711aef1e20c466cf0ab9da4a19c96dae15ae7bd3d4bcdb. 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/QZYD92401721.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x2c03f623df34b2f429c09844e37069199be2e9f3164bb8a277e8e5987186c20a. 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/QZYD92401728.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x2a436222ccc5f3df3ccfc859966e8590dfafb06b42f2b4b8d546dbbc83af11b3. 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/QZYD92401724.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xbd08bbbf766c449152fa2d08cee75dcfc25634d048749638d4e687b048efbfbd. 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/QZAKB2134913.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xc0893a8c18d3849d8af3083d716f2cbffd5cbda723a01a10983671d39c473e85. 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/QZAKB2134914.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x5cf05157b0084e83496547e8044aadeb59e40394915161eb12b38b1b85ff25f1. 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/QZAKB2134915.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x2913ff079b45ccb268ab010bb28cf45281504828a5bbce890879bec970f8a7b5. 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/QZAKB2134916.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x4f13759c14e99e636a4481d229caaa2e8e7e49cd5ad93fcc451fb38c5e616fdf. 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/QZAKB2134917.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x20d8872ef1207eb565a51d7f6b1a4ec8e7eea8939326dcff39d207c0212f8e2e. 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/QZAKB2134918.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x48a0e96e4965b801e7174c23e963b48c7627299f0db7e57e0895bde3c8a485b4. 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/QZAKB2134920.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x5ab296d831715659d78c012030706e488f1c6a68af7e63f568e711e17dae0d32. Chain 2 (Bitcoin): anchored in block 957145 (2026-07-08T08:56:20Z), 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/QZAKB2173109.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x9bb97d4d872dd76232c9b71a4265d684cc7b7ad29b7b60173a3d28e94da29009. 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/QZAKB2155586.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x52d714147dd5c96ef77b5f89788bd86ed3f3e51fe61e34163409ce72073330ad. 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/QZAKB2155587.