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 0x1c0f8553e034ce3491546966d59a0c0c7b4ae9999bb126a177ff2838747f1db7. Chain 2 (Bitcoin): anchored in block 953670 (2026-06-14T18:07:12Z). Bridge: the canonical record inside this Bitcoin proof contains the same CopyrightID. Verify: download https://artists.proofprofile.net/proofs/artist/5921d096-58a7-4ef8-bfe1-6ff31b386397.json and https://artists.proofprofile.net/proofs/artist/5921d096-58a7-4ef8-bfe1-6ff31b386397.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 0xe8bced7989911144385920eab81be64de7726e7e82df9320530cb7a364c2c4cd. Chain 2 (Bitcoin): anchored in block 958383 (2026-07-17T08:20:01Z), 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/TR2611000836.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x94ba75c6024c1406c9e8467b0e9fb63579e10d507b96d727499b389d18ad3585. Chain 2 (Bitcoin): anchored in block 958373 (2026-07-17T08:52:23Z), 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/TR2611000839.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x88d6e04e02d6c24d3b499e9b02d71d79fc8ab776a2c30f373d170dfd39be30bd. Chain 2 (Bitcoin): anchored in block 956639 (2026-07-04T11:19:20Z), 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/TR2611000848.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x737ae5600b10edb7c53de514d47336be724d8acd3ea398db70d405a82395cc87. 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/TR2611000865.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xad93bd4c079b12f53a3bc55f9e6fab9b1c021e12a4a9889f8e819f7bb3a6e7fc. 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/TR2611000866.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x3e307bdae9f16ff670f1135269ff03c44d522848785961fd9c261a5902c9e816. 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/TR2611000867.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xad0e965b1ff0c2a753fe4c5424e8f44ded6fb5db3497734713a3ed2d9a9c4e17. 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/TR2611000868.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x420907fff79ed8109f71838a3a82879fb4139203613da2df53e65780d67443b5. Chain 2 (Bitcoin): anchored in block 957118 (2026-07-08T03:20:19Z), 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/TR2611000869.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xa180b6c906e43c2fdeb1a5e8dda0f1a7062085c794a878b59554add687295fe6. 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/TR2611000873.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x87430f8cb353c1810e450a4a61fab0765879258cc7c52e8bf1bf9a0e08e3b556. Chain 2 (Bitcoin): anchored in block 956889 (2026-07-06T06:56:49Z), 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/TR2611000874.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x821fc116b8afb54b7754f381e0541145e93ee1ce7691333c53944bd5d926d9c6. 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/TR7911300163.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xad93bd4c079b12f53a3bc55f9e6fab9b1c021e12a4a9889f8e819f7bb3a6e7fc. 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/TR2611000866.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x3e307bdae9f16ff670f1135269ff03c44d522848785961fd9c261a5902c9e816. 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/TR2611000867.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xad0e965b1ff0c2a753fe4c5424e8f44ded6fb5db3497734713a3ed2d9a9c4e17. 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/TR2611000868.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x420907fff79ed8109f71838a3a82879fb4139203613da2df53e65780d67443b5. 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/TR2611000869.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xa180b6c906e43c2fdeb1a5e8dda0f1a7062085c794a878b59554add687295fe6. 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/TR2611000873.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x87430f8cb353c1810e450a4a61fab0765879258cc7c52e8bf1bf9a0e08e3b556. 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/TR2611000874.