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 0xdfbba9fef43537d5082d3f21c165775a1cc7efbc52f249f17e359fcdd9346563. 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/f2245f44-d7d9-41cb-8dfb-84e0cb88e3ca.json and https://artists.proofprofile.net/proofs/artist/f2245f44-d7d9-41cb-8dfb-84e0cb88e3ca.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 0xf5749b8bcd367f6f0379428053a91402fe147747b40433298af86a4789f1d68d. Chain 2 (Bitcoin): anchored in block 958300 (2026-07-16T22:09:15Z), 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/FRX872159498.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x43094a879c08ae9ecb47cdea9c2bc089e3379370e40012d286a32daa34c23481. 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/DGA072225558.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x40837d12ea65add4757c3726d11a49a89c87f0c9ba9cc8ede9db77f87eb8338b. 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/DGA082376051.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x7e3e69bba6edf21886a3b474cdbb7dbca2670c094595e15c01fc3a2e42f6d006. 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/FR96X2439521.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xc781ff5055b8154cbdbafa02a72d932660cb43336bf5660cf7c3492a0c72dcbd. 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/HUA612303992.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x064c0e322264c90018c036191585e28d8caaad3b72717afd5228e1dd9bd03d90. 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/FRX872424496.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xbce2c53499aed221804755171c0bdfce10633d632db1732e18d5205be52fb4f8. 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/HUUM72200054.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x5f797fa628308543435b87dad8c9a366f88f537de02a8f79f40d8e28307f5d8c. 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/HUUM72200109.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x12c1d14e0686b22848b37618db076e17dca427f6e2faf02387c52ed5fc26ebe6. 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/HUA612302517.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x90b60051f7287f76150a06acd80b6d8b2e09e61cb038abb9e7b77931c1bc921d. 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/HUA612203245.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x66549fd3282afc747baa0c9475814737b8d3e8b7c1ac9091a5a55d2f97c9260b. 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/HUUM72100601.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x2027f503a273c1767060dee8388cccdc29ea5ee54d4340009feb5182a4841e46. 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/HUAMV2100228.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xc6e709853c0ff9197b3fea9b49dda00bbd3d8777262bcf0cbcf3837764534e16. 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/HUA612405702.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xd17f9b6da57fcf62b581f7ef62a1c3dae9c5b99c6e3ace2e303e622f4c9090bf. 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/HUA612400905.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xf11a24775b824b6b07562f7e057eb1adf64dc7c11b767009c436f90ae303092d. 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/HUA612304453.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x986f3cf09fbcbaa6572be8e95e3de1b834d66ea9b13664253a274c4c18ff2ab5. 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/QZK6P2342032.