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 0xd42614748ceb996b2b5afe8fcd02530a69e8e4ab8d21d2d82ac8f6f572d4c2c4. Chain 2 (Bitcoin): anchored in block 953807 (2026-06-15T16:39:18Z). Bridge: the canonical record inside this Bitcoin proof contains the same CopyrightID. Verify: download https://artists.proofprofile.net/proofs/artist/e4052985-b0a0-4b4f-bb63-3d6bfc56cfd8.json and https://artists.proofprofile.net/proofs/artist/e4052985-b0a0-4b4f-bb63-3d6bfc56cfd8.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 0x2bb2db93155d80ef0639bb5d6245ee2cc56de4bdc9f9ad9f5a35ae9ff38bc138. Chain 2 (Bitcoin): anchored in block 956894 (2026-07-06T07:53:57Z), 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/KRY661430751.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x661032644cedabe5835cc07317dfd8d472d699c989906cc471fae0d1f7f802c8. 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/KRY661430595.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x9bf62ff6f8893c936f0e73fee566b1b9c75c72ee7185e70040476b9a809d10f1. 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/KRY661430044.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x9d3e09c961e35b0a7c34fc454ef8e2423ca8bfede577487efd78e49d16a0090e. Chain 2 (Bitcoin): anchored in block 956302 (2026-07-02T03:30:09Z), 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/KRY661430987.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x3155b3c08936b81c452946805c674e11ae6ecf3146ab9f5df98c116d693c7c06. 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/KRY661430605.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xd50d18f7409f1354ff3f7b456f65aef3e3e1585551c0bf08c9802ffafaf3b427. 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/KRY661430825.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x8064b1c394a65437d93dbcc71f68bfcbf486c8e97b8991841a5a35a9811d8a51. 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/KRY661431095.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x070be3158e2c9e5b42aaae1170cf37a928f643306a3877f26c122159316c281b. 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/KRY661430753.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x2bb7a865e39e742c81e5d550680a8c13169d067691f2670b698760f118e92d32. Chain 2 (Bitcoin): anchored in block 957052 (2026-07-07T14:50:41Z), 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/KRY661430834.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x426a8f22fb0dcf5936cfae33f7491180c0568359df2abfffb40f5cf77b70146c. 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/KRY661431094.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x15d720185a5d2b31b94082a3e47cb7f70f5125b6370aec116279ebcad03f2b59. Chain 2 (Bitcoin): anchored in block 954130 (2026-06-17T19:07:14Z), 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/KRA380901549.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x490ae2a7af373cb6cd39c2d071c5a54d18aeb5110d445648609677749f4b406a. 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/KRA380900294.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xd3f36e468fba906498f58e51990dbf1aa3d6f1b26296d7ccf4df492e92964b78. Chain 2 (Bitcoin): anchored in block 956302 (2026-07-02T03:30:09Z), 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/KRA380901552.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x0ba871d5d48185e503fbdf055a65ad8bce86880f316e36e62c270e3db3265a00. 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/KRA380900296.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xcfb301370a5dd1711782cb6c45e2d481daed90ac95eaa594a6b5b64748c65574. 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/KRA380900298.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xcfb301370a5dd1711782cb6c45e2d481daed90ac95eaa594a6b5b64748c65574. 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/KRA380900298.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x34acd31d1a911cc86367d900b65fbc3c7d42a7e4daf6bdb51813e4d011379907. 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/KRA380900312.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xfdcb3d7dc401c8344b019cfeb5129cfbae5d0da851eab60b99fba38e4d860227. 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/KRY661430016.
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