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 0xcdd7c5b80a1abc4e946b9e50e56169afe4ab7cdf58b64de97f1cf83efa4d31f0. 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/22f524ea-27ae-4422-a422-9e7929a8d926.json and https://artists.proofprofile.net/proofs/artist/22f524ea-27ae-4422-a422-9e7929a8d926.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 0xf87032c80b1e746d5090c26b3d6b9e2c834932bc5059c90a127edda5c4991f0c. Chain 2 (Bitcoin): anchored in block 956856 (2026-07-06T01:25:57Z), 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/QM6P41433527.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x20039e5834e42f1f7cf1bf8a6e546fd0012c8b1a5cb68d567d08548979f1add0. 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/ESAAI0174742.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x2984da516d61c124fae804796a26ab5c3a9b4fbc710dec2bc821a604b739035e. Chain 2 (Bitcoin): anchored in block 958681 (2026-07-19T06:14:54Z), 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/ESAAI0174744.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xf7c69d0311d364e6369860138f4b1cf5e3dc05a86d25af98cc98f5d45d7dc8ec. Chain 2 (Bitcoin): anchored in block 958157 (2026-07-15T15:06:09Z), 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/ESAAI0174746.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xb9e628e6fffcd09ef1e6f2a9be56b7d7d4d331db28f4ce65d22783f4e023da64. Chain 2 (Bitcoin): anchored in block 957599 (2026-07-11T19:42:17Z), 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/ESAAI0174748.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x451645507ebf741010ded8bf8367e1f3acc623b2ef7ecac78c379be5b83bc243. Chain 2 (Bitcoin): anchored in block 958448 (2026-07-17T19:49:21Z), 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/ESAAI0174675.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xa36b9a170cab3b8e0728584413b51220596d30922ee37c4b0eea87f74c1f5a19. Chain 2 (Bitcoin): anchored in block 956728 (2026-07-05T01:43:49Z), 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/ESAAI0174678.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x8bceea2ca4936c00dfde86e754e6e48ee1a1e5571884d76f105f830e4e75c98d. Chain 2 (Bitcoin): anchored in block 958060 (2026-07-14T20:39:42Z), 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/ESAAI0174680.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xe53bd2f9d9ac488322ecea0040c0a91c3672beed9c580c9e888937bc5e99087d. Chain 2 (Bitcoin): anchored in block 956857 (2026-07-06T01:26:17Z), 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/ESAAI0174686.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x4df4292107db68d40d3763d8c7d0d27b8a92fd46d68385781b044d7aedba291d. Chain 2 (Bitcoin): anchored in block 956476 (2026-07-03T09:04:44Z), 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/ESAAI0174689.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x50dd6a2a1f89b9e2717663c2a3a61819dc9ce9c497a15ca8f2d53278aec80d5d. Chain 2 (Bitcoin): anchored in block 958060 (2026-07-14T20:39:42Z), 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/ES5590601900.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xce7a95ec338bc64afb7d0aaaf001cd63090ac72af7b5228f031d2988d925d50b. Chain 2 (Bitcoin): anchored in block 958667 (2026-07-19T05:04:54Z), 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/ES5590601902.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x51a9bfbb7134b881d5c04a2179be00b9addb15cd72ce7dcb922d85413a2bf21d. 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/ES5590601904.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x1252bd4093667b32756e035a9518eb3502a01e84d087ee163dee926623ac842e. Chain 2 (Bitcoin): anchored in block 958631 (2026-07-19T00:50:09Z), 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/ES5590601909.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xe981776de6c950b39c3cffc8e26b6e9cff5ca2fad9e5901a158caf215f9082ed. Chain 2 (Bitcoin): anchored in block 956738 (2026-07-05T04:47:21Z), 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/ES5590603088.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x608cc556b4a687b79f146d22188d38775862fc9cc30f61545e9606ee7f608c01. 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/ES5590603092.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x9aab615217556a617fa642ecd49d99cc808234272e3d568eef88554ca833b25b. 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/ES6119552809.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x3d8d0de24bdf6af8c6ea28cd6ef7eea6039f8c1fd5f014f71a9bf96827782609. Chain 2 (Bitcoin): anchored in block 956857 (2026-07-06T01:26:17Z), 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/ES7421500045.