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 0x84916d19ef63ebfcbc7ae80e1ec669be09c7b8e8b4cf33089ba46e71be8cef18. Chain 2 (Bitcoin): anchored in block 953423 (2026-06-12T21:20:00Z). Bridge: the canonical record inside this Bitcoin proof contains the same CopyrightID. Verify: download https://artists.proofprofile.net/proofs/artist/22ea2665-da78-4d75-9b81-fe0522232756.json and https://artists.proofprofile.net/proofs/artist/22ea2665-da78-4d75-9b81-fe0522232756.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 0x2e7e06dfffe25ec34de4827ec9b4c0b319cf638b4bbebc127f75c462d43cf4cc. Chain 2 (Bitcoin): anchored in block 957771 (2026-07-12T23:27:28Z), 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/BXU5P1700006.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x8cf80fce23b40dc3e8a10c4f2bce057a5f3b147e41190dc7287e89f2cdb71d0f. Chain 2 (Bitcoin): anchored in block 956420 (2026-07-17T03:59:17Z), 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/BXU5P1700007.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x4b331bf872bf59efc8ed220af0799629b8236756da275c5f727a4ce399414b86. Chain 2 (Bitcoin): anchored in block 957851 (2026-07-13T11:26:33Z), 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/BXU5P1700009.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x51b38eecb2817b0793136d6e970ed91be63de7a0ab1f39bc7c2d4b1485f8b86f. Chain 2 (Bitcoin): anchored in block 958083 (2026-07-15T01:50:31Z), 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/BXT622000082.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xcc3f1f923d93fcaa2a9b9acb2a6f100c018ebc78030b9713868ff4ef594cefa6. Chain 2 (Bitcoin): anchored in block 956474 (2026-07-03T08:56:35Z), 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/BXT622000083.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x987808019d9c91526bd68080f54fbc7a1e71f60d51bf7ca135e4e0f51c3e86a2. Chain 2 (Bitcoin): anchored in block 958142 (2026-07-15T12:39:42Z), 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/BXT622000085.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xb00ee4f7319b483d3db4caca3043dabde1e9fa33f5330d109d72e73505b9eceb. Chain 2 (Bitcoin): anchored in block 956430 (2026-07-03T02:22:42Z), 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/BXT622000090.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x96772a7773be66a8503a6db69257884026e447b6831306b696d70ffbe47e9999. Chain 2 (Bitcoin): anchored in block 956545 (2026-07-03T19:59:51Z), 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/BXT622000086.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x7f537cbf214f06ad97a227ed8f9fd6005aebb781a373a15351aade7e48fe71f7. Chain 2 (Bitcoin): anchored in block 956545 (2026-07-03T19:59:51Z), 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/BXT622000091.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x26fddd0e599fb3344c3579ae26df88ef7a45f89354d8cad61326bb43b68e2752. Chain 2 (Bitcoin): anchored in block 958373 (2026-07-17T06:09:33Z), 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/BXT622000087.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x98c366076ba506efbf56c00a082d888c96bf3af24ee2d0eabb91d3faef0fba24. Chain 2 (Bitcoin): anchored in block 956484 (2026-07-03T10:47:44Z), 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/BXT622000088.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xba099ab1c70829528694681df0623fd3a7f7b6b9164c00ad4a989ce2808f1705. Chain 2 (Bitcoin): anchored in block 958373 (2026-07-17T06:09:33Z), 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/BXT622000089.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x51b38eecb2817b0793136d6e970ed91be63de7a0ab1f39bc7c2d4b1485f8b86f. Chain 2 (Bitcoin): anchored in block 958650 (2026-07-19T03:36:41Z), 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/BXT622000082.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xcc3f1f923d93fcaa2a9b9acb2a6f100c018ebc78030b9713868ff4ef594cefa6. Chain 2 (Bitcoin): anchored in block 956772 (2026-07-05T10:01:46Z), 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/BXT622000083.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xfcad9d79b9431c6e2819cbc678cceff480766aec7ef8376cd70b7b79f8b81b15. Chain 2 (Bitcoin): anchored in block 958823 (2026-07-20T06:33:32Z), 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/BXT622000084.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x987808019d9c91526bd68080f54fbc7a1e71f60d51bf7ca135e4e0f51c3e86a2. Chain 2 (Bitcoin): anchored in block 958825 (2026-07-20T07:42:15Z), 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/BXT622000085.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xb00ee4f7319b483d3db4caca3043dabde1e9fa33f5330d109d72e73505b9eceb. Chain 2 (Bitcoin): anchored in block 956776 (2026-07-05T10:59:37Z), 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/BXT622000090.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x96772a7773be66a8503a6db69257884026e447b6831306b696d70ffbe47e9999. Chain 2 (Bitcoin): anchored in block 956772 (2026-07-05T10:01:46Z), 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/BXT622000086.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x7f537cbf214f06ad97a227ed8f9fd6005aebb781a373a15351aade7e48fe71f7. Chain 2 (Bitcoin): anchored in block 956772 (2026-07-05T10:01:46Z), 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/BXT622000091.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x26fddd0e599fb3344c3579ae26df88ef7a45f89354d8cad61326bb43b68e2752. Chain 2 (Bitcoin): anchored in block 958876 (2026-07-20T12:15:48Z), 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/BXT622000087.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x98c366076ba506efbf56c00a082d888c96bf3af24ee2d0eabb91d3faef0fba24. 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/BXT622000088.