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 0xe0d1731467a812e6c563e87edab72ff9639bc75241bf3a409ad3f0748a7e4a86. 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/88143798-7a22-4e42-ab96-d7fd523fdb87.json and https://artists.proofprofile.net/proofs/artist/88143798-7a22-4e42-ab96-d7fd523fdb87.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 0x4d025bf4ecf37053555ff6d8f68ff40980c235f7d984433e652a1e5eb325bda8. Chain 2 (Bitcoin): anchored in block 956576 (2026-07-04T02:06:47Z), 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/AULI02355780.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x9989bf63d89b758c09e767766184dda38ac8967408899831274579ea495e4d1e. Chain 2 (Bitcoin): anchored in block 956738 (2026-07-05T04:47:21Z), 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/AULI02144440.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x9989bf63d89b758c09e767766184dda38ac8967408899831274579ea495e4d1e. 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/AULI02144440.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x9b19fd96ec97a43491e757ab027d7bfa54949d1d2633d8bbe375aec9c52d4a60. Chain 2 (Bitcoin): anchored in block 958432 (2026-07-17T15:43:17Z), 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/AULI02144370.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x9b19fd96ec97a43491e757ab027d7bfa54949d1d2633d8bbe375aec9c52d4a60. Chain 2 (Bitcoin): anchored in block 958377 (2026-07-17T06:48:00Z), 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/AULI02144370.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x9989bf63d89b758c09e767766184dda38ac8967408899831274579ea495e4d1e. 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/AULI02144440.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x6173a336d87c30d1de5360783b3b6168e0d4166a74545eddbabbb03c4acffa04. 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/AULI02144410.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x753f950aede44fed48f9b3e67d80c5bfe97722b6bb766dec0c86ca886ad35238. Chain 2 (Bitcoin): anchored in block 958176 (2026-07-15T20:05:28Z), 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/AULI02245980.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x9989bf63d89b758c09e767766184dda38ac8967408899831274579ea495e4d1e. Chain 2 (Bitcoin): anchored in block 956822 (2026-07-05T18:48:28Z), 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/AULI02144440.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x753f950aede44fed48f9b3e67d80c5bfe97722b6bb766dec0c86ca886ad35238. Chain 2 (Bitcoin): anchored in block 957891 (2026-07-13T18:21:04Z), 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/AULI02245980.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x0884d18d2b8092fd6aa782a82851a12c3c00d198905557fa51f9a5a1c2a2a8cd. 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/AULI02355160.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x1e9c4b92ec881382b56b581b9e781679c526f3150546e50e26a65b4b4dcf62fc. Chain 2 (Bitcoin): anchored in block 958377 (2026-07-17T06:48:00Z), 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/AULI02561640.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x1e9c4b92ec881382b56b581b9e781679c526f3150546e50e26a65b4b4dcf62fc. Chain 2 (Bitcoin): anchored in block 958601 (2026-07-18T19:27:02Z), 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/AULI02561640.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x7c9cc03f8b625da58460e1a22f8888756a49dfd8ea059b700ad352f489e95187. 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/TCAIT2452710.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x21a00a1712c4fa1bfec5d4adc4618d7fde5b1fa4ccc276c48e59a49f9e5802b1. 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/TCAIT2481692.