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 0xec445dfa5d17bf59cbe6cee81ed7ef5bbd4c06b8d3af7ddba8c0504eae42a96e. 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/414ddd5e-e02f-4754-984e-48b8d97c7c6a.json and https://artists.proofprofile.net/proofs/artist/414ddd5e-e02f-4754-984e-48b8d97c7c6a.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 0x197e009bb1a5c6f7f7de89f7d14602d15c5f717a07850f9eaf46e1ad4c74445c. 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/GRIE11800021.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x010560d55452008ea52d333fdae26293ecd06ebf97a835a598bc7a96f74646a1. Chain 2 (Bitcoin): anchored in block 956728 (2026-07-05T01:43:49Z), 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/GRIE11800022.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xb38ff78b7ed25fb24e3de80cfebd396121b8a7be3e7d3ea19c10fc671efedb15. 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/GRIE11800025.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xabf61682e57085f1539fbb26ada010979eca09434976d229cf361086bf94d1b1. Chain 2 (Bitcoin): anchored in block 956484 (2026-07-03T10:47:44Z), 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/GRIE11800026.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x8c02c6f1e5db1aa6e088981ddc34084bbc0229e9a38e9026cbb5af08adbde032. Chain 2 (Bitcoin): anchored in block 958853 (2026-07-20T11:56:29Z), 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/QZES72072384.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x22ea8f05d189f2e073d0c9d2cb92745dcf5b66634f3d60bd57ba480c90ed9129. Chain 2 (Bitcoin): anchored in block 958870 (2026-07-20T11:19:23Z), 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/GRIE12000196.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x169cafffbc31572b8be6665a94df2584f6b28fa994330d1581523667754bce8f. Chain 2 (Bitcoin): anchored in block 958436 (2026-07-17T16:42:22Z), 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/GRIE12000202.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xabddebbfcb42f5b4f0edd67b5e8ff68882602b5f5e105244f9ddb66becb27de9. 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/GRIE12000203.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x638de9272c61e53ce8d9805ae0751c3a237bd9530b667cc4ab04c65acc6dc240. Chain 2 (Bitcoin): anchored in block 956484 (2026-07-03T10:47:44Z), 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/QZMEM2239811.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x039aaa56c69c12791ecefc418cb5c75aa714e325e3db12bfc101f24927148e62. 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/GRIE12400030.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x18a88c77630c440362878e74c6b29534f3142028de6f77ac66ccfbe7fc8f0e0d. Chain 2 (Bitcoin): anchored in block 958476 (2026-07-18T01:26:56Z), 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/GRIE12400021.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xe080ab144d70040dba59aeda205422396e250fe58f84ac5417f4566f536c796d. Chain 2 (Bitcoin): anchored in block 958448 (2026-07-17T19:49:21Z), 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/GRIE12400023.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x6cc367814c965598baa3b772767ce36127670eb016f009fa08783b831c2a9d32. Chain 2 (Bitcoin): anchored in block 958489 (2026-07-18T04:13:26Z), 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/GRIE12400024.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x7470d6dabfe0da0be45edf6d253a7c5a1fb70b3d275cf541160e8cc39ac26974. 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/GRIE12400025.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x38695a8bb02c8d003ebab749f1b97388d22c92ec62f9789b6ee564054afac807. Chain 2 (Bitcoin): anchored in block 958658 (2026-07-19T04:09:09Z), 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/GRIE12400027.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x406cefa39b329853cc0cadd3f561deb64e114f5009718b81c85615fba45cc2a7. 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/GRIE12400028.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x7239585323ab6365ea7829105f6ca425123f91cf4d50abdcdb3c279c8e909cf2. 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/GRUM72201145.