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 0xf33e9d5e33e603bb74cef398ad7cf3eca3e58d6daf3edb001159f0e0c680499c. 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/a46d6b30-5be9-4fd8-a9a1-e4521d71dbba.json and https://artists.proofprofile.net/proofs/artist/a46d6b30-5be9-4fd8-a9a1-e4521d71dbba.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 0x11af0ac0a1c0b8080e75eab8d7c3986fc995cc0d51610951119c48b4fb4890cb. 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/MYSL11301049.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xf207909b116045a6052bfb45743f047f413b26d5ba22e8d565dbe20488a451d5. 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/MYSL11301075.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x17b4136464595c0cd91df1d64ee9258e7c4ffb2dccc9acd71e658b0708d0dda7. 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/MYSL11300792.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x0e797ff23d9eb179945b63128c1cadc74dae0652b043bb4ea9885a63a8e71011. 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/MYSL11300795.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x4ef1493f4c4f75271c8a1f04f7f6974eca4be20617fe87da416ee5d488f96600. 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/MYSL11300799.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xb0271bd91b513f6e5760c715d4a7f6075a51453ecef3573ab9f378d46724aebc. 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/MYSL11300801.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x93c79ca35d2a83695bdc6f1c43214fb1642f57c3fae02827aac7a5cccb969c56. 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/MYSL11200687.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xd06ff659d42b7451e908f11c7e0de569855ed00083f855926962ead3fa2037c4. 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/MYSL11100270.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xbbf2b7d3ded6b90456a570d15c74018300c8b510f913b35009b0545db1a2b0fb. 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/MYSL11100274.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xeb567bbc0b35385b3a88225ec34c80edd787c4e70e34c8169710dfe5b5257d5d. 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/MYSL11100276.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x77e81329422ea6e5cd6cc72b37808cbd1ca0f75de281d64ebac4a7e9a9f17a55. 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/MYSL11100278.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x0da340a64ffb281f0cb9075fa879f19477978e4477688e4fff3cf472f29e3434. 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/MYSL11100282.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xc8f56652c75419ac941bc924b41ac9918ffcbe13b407db99c80cb949ffa21352. 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/MYSL11001959.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x608f0eec00bd29a6fd77f7a541085cf1389ba65a486890086d9aeb0f7b71654b. 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/MYSL11001960.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x86093bb9d5ff67358f8b2991eb62b987c2573eb3f6614c4b71a8162b8697f8ee. 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/MYSL11001962.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x45ebecc6a69f6bcf22f91d1911f605c127b12dd0c66673d1521553d5e5ae468b. 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/MYSL11001965.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x1f8dbe00de41ce115dccdd22e969e2c5f34ff15c94d88d9c986168bf50c7bc93. 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/MYSL11001972.