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 0x4a3aa5bcbaa2a4c8ee9955cbaded9ecc73fcb110c9a38c52bb3b10fa448509ee. Chain 2 (Bitcoin): anchored in block 953408 (2026-06-12T19:28:13Z). Bridge: the canonical record inside this Bitcoin proof contains the same CopyrightID. Verify: download https://artists.proofprofile.net/proofs/artist/42356859-67f4-424e-810b-0028ea553517.json and https://artists.proofprofile.net/proofs/artist/42356859-67f4-424e-810b-0028ea553517.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 0x3f21e0af7b244bd17aec4370de0fdeca4a3c4d8cc685934fc5195cd6258b6b5f. 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/CAM460418335.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x2e752da2095556de579f5942361556f15be6e1e7bfec87a93d496a96d3717136. Chain 2 (Bitcoin): anchored in block 956375 (2026-07-02T16:51:38Z), 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/CAM460409700.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x3c6212d637ee2e526e1f9002d2ae86afde7e9954747ed6e862ece308a0d2cea3. Chain 2 (Bitcoin): anchored in block 956375 (2026-07-02T16:51:38Z), 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/CAM460403017.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x414d9d38091374294ec54f8cc30bfbc4c3c50b3d82fdf57ef9e6f32d3b621d9e. Chain 2 (Bitcoin): anchored in block 958203 (2026-07-15T23:06:15Z), 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/CAM460413987.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x8ac9daa564356e0734fa08b49da187bc92261766364bc7ec4643c0315825e3e4. Chain 2 (Bitcoin): anchored in block 958324 (2026-07-17T00:12:48Z), 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/QMVRR1301333.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xc06d68c9e45eb5d9f560b16de5082b3bc2fa7508f884905460d19146df6a9575. Chain 2 (Bitcoin): anchored in block 956634 (2026-07-04T10:04:33Z), 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/CAM460405595.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x4816a5d5e9d6dbe35de8ecc1353b39460c4acd640b3ac30cb8cec6c3409d65f0. Chain 2 (Bitcoin): anchored in block 956639 (2026-07-04T11:19:20Z), 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/CAM460423443.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x81cfec176c3f0f127958871eec61ab1be4902ae9429e89aaa85917117187304c. Chain 2 (Bitcoin): anchored in block 956656 (2026-07-04T14:03:39Z), 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/CAM460407894.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x0f82634881a7d7069fd9e6726b43bdab22d3494c9cc51d6d3a9d3c38a8cc4aaf. Chain 2 (Bitcoin): anchored in block 958541 (2026-07-18T11:37:54Z), 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/CAM460413039.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x9fef45f167b1474013acd4ead90e10699bbeff4e7360b24b38eca8c73376cdb1. 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/QMVRR1100273.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x4473f2fa531fdaa48285ae73320f27f28cf4c9fbce3411475991235b27716632. Chain 2 (Bitcoin): anchored in block 958920 (2026-07-20T18:14:22Z), 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/CAM460405154.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x7df7297f7df27ee1f7d5e2dc13690f356b54b2dc315918abda3cc2a615403fd8. Chain 2 (Bitcoin): anchored in block 958543 (2026-07-18T11:58:44Z), 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/CAM460403826.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x524ba264ad0e8cb06dc6495a9b809b38bfece7a5a2f7bcc0040ff863779556e9. 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/QMVRR1301281.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x4abe7e67c0cf97def0e924bb3ccdbb115bccb7626ca7b6b63eace7d7142073b2. Chain 2 (Bitcoin): anchored in block 956822 (2026-07-05T18:48:28Z), 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/CAM461002049.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x4501ff79755d4b72576f57613ff7bab474f431dfbecebac1aa7adab074b651d2. Chain 2 (Bitcoin): anchored in block 956822 (2026-07-05T18:48:28Z), 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/CAM460418325.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x35448077191e3ad94a4011655ec60f074d16b7b5a7b2dcbd08717cc0ecdc1c42. 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/CAM460901741.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x584fff9c7b915586ab5eb7429c2c7006fd4afb44bcbacfea0566da0619c42c48. Chain 2 (Bitcoin): anchored in block 958576 (2026-07-18T16:22:28Z), 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/QMVRR1301277.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x3f21e0af7b244bd17aec4370de0fdeca4a3c4d8cc685934fc5195cd6258b6b5f. Chain 2 (Bitcoin): anchored in block 956826 (2026-07-05T19:27:56Z), 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/CAM460418335.