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 0xb10a7ded134465bf4f1bbae5989b3a283d6bee8850311caaa22957f5388fe4bf. Chain 2 (Bitcoin): anchored in block 954513 (2026-06-20T06:31:18Z). Bridge: the canonical record inside this Bitcoin proof contains the same CopyrightID. Verify: download https://artists.proofprofile.net/proofs/artist/9d9d93c2-7790-4d50-a76c-6aafe10df581.json and https://artists.proofprofile.net/proofs/artist/9d9d93c2-7790-4d50-a76c-6aafe10df581.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 0x86148215268becb436567c5e62f122377deb95d6354382027d958e387f4bfdd7. 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/QM6P42585902.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xe5fce9a54f2d6a16a87c37fefb4a0fbca2db0866b90379d88a7cbac1f0edcb7d. 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/QM6P42585903.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x6082de2cb4095ff720ffe148aebf30a7ad2a8e40b2a0b5095d1748cc2b4ee860. 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/QM6P42585904.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x246706afdc150f60924b9675f23e686277854fd26407933f1cbe24e2627020ce. 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/QM6P42585905.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x19191bdc261df4b2884922f30db0e5d4f9541a9e9c4f4df70848bacbaf4f4ce1. Chain 2 (Bitcoin): anchored in block 958612 (2026-07-18T21:29:37Z), 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/QM6P42585906.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x179a55bc1d038f1331f79c7c4d108fda1b3f453ff0eb6a86aa3db4621a5b0419. 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/QM6P42585907.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x7c2182e44a231101a21105393332b7d568cd2fa43eca9ce84c14c1a04aafb156. 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/QM6P42585908.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x1e13d0be4c60ca1a5a54b91595f5115df077ca05ee4b8c8ffb3df537945d328d. Chain 2 (Bitcoin): anchored in block 958601 (2026-07-18T19:27:02Z), 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/QM6P42585909.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x3c9d7d4046f1ad51238f5bf9ea354258a06a2311008d14120584c7d8889b2166. 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/QM6P42585910.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x9c8ca993410f3e624234f06df4aad085e8b1668d0867d98578afe5f33461db04. 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/QM6P42585911.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x7aecdb6c920baac9a42a6c238b510ce19ecbf45b009229e0bc735e91f26cacc6. Chain 2 (Bitcoin): anchored in block 958639 (2026-07-19T01:18:30Z), 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/QM6P42585912.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xc3ca5b2ca6749b4df1e15371ac0961453ed787cc90627240dc8112498b4e2fd9. Chain 2 (Bitcoin): anchored in block 958601 (2026-07-18T19:27:02Z), 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/QM6P42585913.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x06524f87706327ea72ed75525b3e49e0113c056bc06fae938bf9b94b14e9d0c4. 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/QM6P42585914.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x2cebd63c67bbf1aa9f2fc657756225012adadc4a13420432980c30284edd6c66. Chain 2 (Bitcoin): anchored in block 958601 (2026-07-18T19:27:02Z), 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/QM6P42585915.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x97174bd6fe48429e24658981a8645e0b7141a9fc347c3f36e1749cf4caf20f74. 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/QM6P42585916.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x2b87e3f3fc114911138c886c2ea6a0a4512ff6a334ff7eb6fa8ac1ee11bef82b. Chain 2 (Bitcoin): anchored in block 958690 (2026-07-19T07:14:39Z), 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/QM6P42585917.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x8a676f186ea592ba9ff735086a35ddea18393f92c8e5964377fa39f77595445f. 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/QM6P42585918.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x91b74c2faaa866ce1ac279cff6c412c77d21aaf9039ffb3b767a697082cc2d9a. Chain 2 (Bitcoin): anchored in block 958601 (2026-07-18T19:27:02Z), 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/QM6P42585919.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xae27c6c0ab1d46332371fc58680bc2de95800caa07e4fa956a10b5a0a1f76544. 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/QM6P42585920.