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 0xa866a884d396ba3cfcc618c43c20d17a6b372fa3160726cdb5f2545846fec2b7. Chain 2 (Bitcoin): anchored in block 953407 (2026-06-12T19:24:56Z). Bridge: the canonical record inside this Bitcoin proof contains the same CopyrightID. Verify: download https://artists.proofprofile.net/proofs/artist/d66ab77a-37fa-4b0f-939a-419736606715.json and https://artists.proofprofile.net/proofs/artist/d66ab77a-37fa-4b0f-939a-419736606715.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 0x07d9e8c005a8c619672ecc8c30e2b234cd1837d9e2a553ad17e5c358b48c848f. Chain 2 (Bitcoin): anchored in block 956420 (2026-07-03T00:42:11Z), 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/GX8KD2416607.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xe04f029ada387a331a30977f2270877eb783afcb847fab08e5f4b2b862c0dadc. Chain 2 (Bitcoin): anchored in block 957766 (2026-07-12T22:25:04Z), 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/GX8KD2493912.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x5b8b8940e0f968d48d3232653e1045f8d20d5a16c7014c1f005a63a5c8f7f64c. Chain 2 (Bitcoin): anchored in block 958079 (2026-07-15T00:21:05Z), 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/GX8KD2475342.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x2fd7444e8557a2dfcc76c07d5ae29bd4470e5ac84c4939c5e7d45c05c01b8640. Chain 2 (Bitcoin): anchored in block 957766 (2026-07-12T22:25:04Z), 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/GX8KD2485337.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x1f0421508ebf159800953261d5607414b33c794e1460e41050e9908c9476d4bb. 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/GX8KD2486777.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x9a58a164364719d972f2dcb5693337dcfa68fc428215f27043185ea365d1b372. Chain 2 (Bitcoin): anchored in block 958087 (2026-07-15T02:56:49Z), 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/GX8KD2411752.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x82c67192f44a2b8817cf83dc8dae48fe7ccea9737fb614298d3b195c4421ac3d. Chain 2 (Bitcoin): anchored in block 958087 (2026-07-15T02:56:49Z), 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/GX8KD2434562.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x83fb1cbe400f94d61b96b06d7213551cf9ae618c3754b64f5401f871d53321e3. Chain 2 (Bitcoin): anchored in block 958152 (2026-07-15T12:00:27Z), 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/GX8KD2497534.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xc4456d7dcc14413ce9ffd7b10119fe7cb5a76b68b5ddbb471f76be1f1b6fca55. 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/GX8KD2458236.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xf099742ae7a487a41941444a0e77b59a00eb9cf2b3ca5aef399ec4cf622010cc. 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/GX8KD2482074.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x81e76d83e6c069ec11a12efcb92ee1f6bafa637fdbd4f88503475604313871a6. Chain 2 (Bitcoin): anchored in block 958095 (2026-07-15T04:30:08Z), 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/GX8KD2445375.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x7b75f046361a1c3fe9d04a2c274c0e132be369161d010cbaf1cb1260a7d354cb. Chain 2 (Bitcoin): anchored in block 958324 (2026-07-16T23:24:18Z), 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/GX8LE2520766.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x784b46b43499b0cdc6e9411d284538ad6a24fe905bc6b1674742df16e1706018. 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/GX8LE2583841.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x3fee04931d3b54cd046b06117f18145e3e4a7c9b8cb4868a21b45e42d2bbb1ee. Chain 2 (Bitcoin): anchored in block 958115 (2026-07-15T09:54:04Z), 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/GX8LE2572076.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xcfe35dcff43c938aa1c7890a761e4992ee076816ca2d41bde602feb7a7e5e47d. Chain 2 (Bitcoin): anchored in block 958228 (2026-07-16T05:43:01Z), 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/GX8LE2526654.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x07bfc25b98edec6054ae90e41b7da84cd62d0fb963534197e5dc244984a0ee9a. Chain 2 (Bitcoin): anchored in block 958276 (2026-07-16T13:02:13Z), 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/GX8LE2522197.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x80934e10f6140289a8cc7b4cc00a6d57f90aaf2f2ff7519328d617fcca91505e. Chain 2 (Bitcoin): anchored in block 956560 (2026-07-03T23:28:02Z), 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/GX8LE2565072.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x42708f4e6cefdef1dd928045783a62e0d2d5b7d6569c1b3cb6af111f77494db4. Chain 2 (Bitcoin): anchored in block 958086 (2026-07-15T02:55:47Z), 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/GX8LE2586875.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xa08fae144b29914f15fd1db0cb5a468da8b023de819bf9092ccce18918ed8d88. 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/GX8LE2568874.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xdae52a7ced66232c82307df3f02926b7cfa22b9963b8b3bd4612e72519a24eba. 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/GX8LE2566723.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xd9972ca6baf7a2d35f2c5518c54a7db7c732aa0f0f4b02af8b701a9d093ab332. Chain 2 (Bitcoin): anchored in block 958146 (2026-07-15T10:33:22Z), 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/GX8LE2525685.