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 0xf3a4a43df1b889f70cbcbd0dd652b6156c4f8a0e8412ff3753728d9c65deac3d. 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/ece37685-a3a6-4c71-b87d-7d469edc28ab.json and https://artists.proofprofile.net/proofs/artist/ece37685-a3a6-4c71-b87d-7d469edc28ab.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 0x830f606a04927c01b5a41c875a7d30549d2638c819f0dfad30e542a96ab04ba6. 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/QZGLM2410229.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x45ea34b4cb06ccd4484161b0d9ee6698911f11f39b61f00eff053ac1c4e88d39. 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/US7VG2425724.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xb745cdb4ce96c7b1136488d867fa3e88fe5f5c26f63d2189c641080a65116ece. 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/QZ5AB2470213.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xf23e3a51a85bc54b4d615cc9b98954d3d92b56a49cd9f4ff9693ca1ded0756f1. 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/QZGLS2396066.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xbb850013ca09f7e23443233f47fc51074ea51e798c0903a57c36ed600058d4f0. 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/QZGLM2410230.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xba48d803179d28268edc376d111570f8da40568449132722e06c71a839e6b911. 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/QZGLM2410231.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xb745cdb4ce96c7b1136488d867fa3e88fe5f5c26f63d2189c641080a65116ece. 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/QZ5AB2470213.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x45ea34b4cb06ccd4484161b0d9ee6698911f11f39b61f00eff053ac1c4e88d39. Chain 2 (Bitcoin): anchored in block 953515 (2026-06-13T12:53:06Z), 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/US7VG2425724.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x5d73f998ed0b2f708bc7c7d043fd092be1a1890755a7bd95e205996796554701. 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/QZW9L2352765.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xf23e3a51a85bc54b4d615cc9b98954d3d92b56a49cd9f4ff9693ca1ded0756f1. 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/QZGLS2396066.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x5395eb723ee9e622ae09fded7031d6fdf79625e46b664f58790a461b4cefbcb5. 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/ES71G2246967.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x712d805d4335e913e20647f6117d985b57ddc354f97aea8903a6e4e355b243bd. 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/ES71G2239591.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xe357fdae308e8941540c94590ff0c8ff1a66329739a64703a7298e403bf5137c. 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/ES71G2304478.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xaacf5c89c6eaec0374d2dc76a205711313d95230c33c42b1e462665a1c5294b9. 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/ES71G2304480.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xcc7a39439abacb55ed24806f572388d7c985e61f1300119a4f3248e3cc4b934b. 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/ES71G2331679.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x0fc1fc6781fb92b93e8520483d12d5556c4c6eb7b224a062cd920be39e99f654. 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/ES71G2331682.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x8f7161e5eda2bc5fe229255e2d6b13815f2805c0735743e06094436e1edb5c00. 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/ES71G2331824.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x730325cd5f769b51dff7e1a4e6a1230a86ef4f0f3360aeeadfbfe484eddac3ca. 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/ES71G2331686.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x1812c263a80f356e7471c2c58d55dbf7d7168dc18d93c6a059c8969c426b9c27. 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/ES71G2244459.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x5395eb723ee9e622ae09fded7031d6fdf79625e46b664f58790a461b4cefbcb5. Chain 2 (Bitcoin): anchored in block 957075 (2026-07-07T18:50:38Z), 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/ES71G2246967.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x928e66acbf4cfdabe64acf55a23bddf242268979e272983ad9e5572e1e71b07a. 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/US7VG2557863.