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 0xf552480751eff8f84d1d952065cb748b477ef7610006e51a5ebba0abc07f8dd8. Chain 2 (Bitcoin): anchored in block 953778 (2026-06-15T11:57:35Z). Bridge: the canonical record inside this Bitcoin proof contains the same CopyrightID. Verify: download https://artists.proofprofile.net/proofs/artist/bdd8057a-c1d9-4499-8a4a-551ce892eaf3.json and https://artists.proofprofile.net/proofs/artist/bdd8057a-c1d9-4499-8a4a-551ce892eaf3.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 0x203667cc02a6b0e0cdd8948b4ec422e2496ed6d5facc00242165eb7a4775c339. 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/QZTBF2325120.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xbb62736ebdc952664d8d26b6c04ee96a98f21024072afb82b805dcf27cfa4741. 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/QZTBF2325122.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xe316ce7d1a5517a6d00f7a2e80a0f2cf00cdd8f3ef306f5bf5e2a2ba1a6846a4. 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/QZTBF2325123.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x5102be0405897586abf592c3397afec4998045a517177e66fad454e026304287. 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/QZTBF2325126.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x53e5a0b06c9d0c7969d729e3fa99a0e125d50f1041c80b0321d6098c16d7b197. 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/QZTBF2325128.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x3ebe56c1c185357d4821af46d8faf7c0f9bddab3084f1b4d9100fc9c66e1a27c. Chain 2 (Bitcoin): anchored in block 957122 (2026-07-08T03:39:04Z), 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/QZTBF2325129.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xa161868ebe5ac447c53d80696e1465e7f45e9c41ad272193e4001f49dfc8b1b4. 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/QZTB92378834.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xc819f2c6710016f7fcbae7be090938bd0e715b6a3889939b7012290225d6a951. 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/QZTB92378835.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xeae854e74b41f1c89783552f3d3fdd48fb73d6f1451495f800d141b61780e236. 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/QZTB92378837.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x842f17603203f346d5a810eea65cdec04896db62ab31b74f7de9a6cbf37a34e2. 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/QZTB92378838.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x0069c4ae2c8aad36174fe31051abd1ee683a2bddf342940bfd73281e1134fcd1. 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/QZTB92378840.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x431c83a463968f615c2e1758d7727c2574bf8ff24459d34612597db357f1b3d3. 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/QZWFH2478725.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x2715053a2e79bcd3725e4bcd9867ad81cd37b8d644f5726de2c77e02906bdbd4. 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/QZMER2435715.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xfcee59ec9aedd5dd87f0d5532de5f1a93322aca1ba5fb98660c782871ef1ada6. Chain 2 (Bitcoin): anchored in block 956375 (2026-07-16T23:44:50Z), 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/QZMEP2410251.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xf4a84d8ae710d9549f412bbdaec0542a09a43e7b468cd08dba63db3c0aaecc12. 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/QZK6F2492780.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x089071311c7383758677a2a6032fbeed2fc375b60c9eef6b92f9c73ba55250c8. 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/QZK6H2458125.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xd96a0f4a99918cd1c00296c509bcae851f523ad408a7676d9d05958bad8f2d36. Chain 2 (Bitcoin): anchored in block 956891 (2026-07-06T07:16:32Z), 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/QZFZ62479387.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x757346cb1ba639e5c933ba0ba2ce82cf36beb71810aa19f5756d701ea5e2e61f. 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/QZFZ42448422.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xf77dffdda9a88baa61feee42d52f564d570cfba12639df3b6852c8e25d4e40c2. 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/QZFZ42428530.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x8aecce890b3672c847a81df300defd6dcd72f33bca40d3cdadf9d8871c6bc09d. Chain 2 (Bitcoin): anchored in block 957122 (2026-07-08T03:39:04Z), 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/QZWFR2336393.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x283e9b3997280ee46e41bcbf57d6ebb1cab5d8d152d74cf170578c6a7555ca84. 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/QZTBE2376224.