1. Compute SHA-256 of OTSCanonicalRecord value → must equal OTSHash 2. Open OTSProofURL → extract Bitcoin block number → must equal OTSBitcoinBlock 3. GET OTSBitcoinBlockVerifyURL → block must exist at that height 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 0xf18b23c872869f4506eb46cd724d61fa1dcfc8632b83fa916993ac5458174a98. 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/52032523-6497-4c5e-9439-fc4786b92251.json and https://artists.proofprofile.net/proofs/artist/52032523-6497-4c5e-9439-fc4786b92251.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 → block OTSBitcoinBlock must exist at that height 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 0x477b2384fa486f293857135c156b57b1199e26e60a5d2ebab4b124dd90d3b0df. Chain 2 (Bitcoin): anchored in block 958224 (2026-07-16T02:28:43Z), 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/QZNJW2416648.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x227a00099d122d8a4ee14e55448c516c90d17724f986567566dabd02e2dc01da. Chain 2 (Bitcoin): anchored in block 958362 (2026-07-17T04:32:48Z), 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/QZNJW2437589.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xcb2f2bf51c78ed46124338b3f6d67addeb294512f27ced4695320429a5ab2c84. 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/QZNJW2422752.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x450dcc5f34a56b9eead74c3de803cbf4695f3c14a0fac71e9e0045422386b0e5. 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/QZNJW2422940.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x656875d05d9ed53d7af61e503bbf65f2aca0f4d4d17347db027592c4191fd6d3. 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/QZNJW2437703.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x0fd228d4e92e3f0bc06e0333616f333df5995ba90d889cc600fad2c594fc181c. Chain 2 (Bitcoin): anchored in block 956551 (2026-07-03T21:18:05Z), 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/QZNJW2437592.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x9c0d88faf68d4fd502ce78269f365709bbf668140a7b75359869150b2956f517. 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/QZNJW2467498.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xbbf068c838f4aae0ccfb69d9d85ca89ac2dda3ab7e28e61fb06e0dfe1b17ba56. Chain 2 (Bitcoin): anchored in block 956440 (2026-07-03T04:03:57Z), 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/QZNJW2434977.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x777b28253742ebc28f01e32b7557db0839a4c8a94bf33170b42b98424f3b5a5a. 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/QZNJW2452749.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xa46b19ec22ae4baaa568b388259e4e52a2336fe48f6becf7b233dd487fc3aef5. 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/QZNJW2442698.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xf026f4c1e74d9031848ac87555b7fccc48dcfc41749263d243c9a795c3ba7965. Chain 2 (Bitcoin): anchored in block 958140 (2026-07-15T12:51:11Z), 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/QZNJW2435156.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x18d68668ce9d18367557ec868b8d96bf3be94b0e237802665717bddf3ea907de. 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/QZNJW2442735.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x30d1a61303d8e24d1761ccd45718b15b965748678d987841e4471b20d737172e. Chain 2 (Bitcoin): anchored in block 957756 (2026-07-12T21:36:27Z), 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/QZNJW2451847.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x0d79d132b9113108398e7c188d1988b2b4cf21aade4ac73593c0cd67803cb35b. Chain 2 (Bitcoin): anchored in block 956551 (2026-07-03T21:18:05Z), 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/QZNJW2467503.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xf99c67760343a070141d5df17b474e7d3168f9624c88eee18fdcb7cf9c6304ab. Chain 2 (Bitcoin): anchored in block 958350 (2026-07-17T02:31:22Z), 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/QZNJW2496722.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xd17f08a40cee9453b3792a1a3cb896ee10ba35a694c0fa8de64d8dccb9f417be. Chain 2 (Bitcoin): anchored in block 958176 (2026-07-15T17:14:36Z), 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/ARQIW2415907.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x9887e80dfbd4318a17f8a37896e1541577451ddcac5c277bc6e17439e78374d2. 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/QZNWT2438469.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xa8936d4ec2b08e1eab0fd7f469087e6e386a863079c3d42aac814bfb76225295. Chain 2 (Bitcoin): anchored in block 957756 (2026-07-12T21:36:27Z), 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/QZNWT2438491.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xf82c6fcb0f0c39ac853098daed180886e9286cfcc9b21bb2415fc933fa28bf42. Chain 2 (Bitcoin): anchored in block 956402 (2026-07-17T03:07:15Z), 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/QZNWT2438441.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xf3bc688a83c7abfedba24b0f0b399e71621557bf727051bc5cd7013896b23ed3. 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/QZJRC2581611.