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 0x7c01e9e951c5da711424c8e5c280ae8fd4e253e8d6edca807da5e1c755c1b641. 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/966a2f6d-31e1-4897-8269-b9e0195f13c2.json and https://artists.proofprofile.net/proofs/artist/966a2f6d-31e1-4897-8269-b9e0195f13c2.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 0xa14cadeec365da11ae76cc582756e415e85a4bf559ee387db886cdf5349ba21e. Chain 2 (Bitcoin): anchored in block 958415 (2026-07-17T12:50:13Z), 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/QZ5AB2300911.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xfc28b74702e7235827cc9d22526b13d76c7c1e8281c5b9b6be1129096e6355bf. 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/QZ5AB2300912.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x92bcf23c2a23b91b5b085eeb439263ce3ac97017d640e50b3e9c963ffc4ebae6. Chain 2 (Bitcoin): anchored in block 958234 (2026-07-16T03:46:09Z), 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/QZ5AB2300913.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x26770013a7dc28e5ade676cda4a6444c60e7891aca5bd45859c8411490d8d6e0. 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/QZ5AB2300914.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xa96f0c3518304edbb5060ecdf7671562739ebdfd634765ee27a32a75c782b9dc. Chain 2 (Bitcoin): anchored in block 958969 (2026-07-21T04:58:13Z), 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/QZ5AB2300915.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xba6e3b2afb63e25f9cf46277f3cd12927d29e9841bd659ad8598cfe123057724. 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/QZ5AB2300917.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x9c93ca622af8013fcf1f2d1ef3fa7881acf27757ac3037a0c1ab344ab42e95a4. Chain 2 (Bitcoin): anchored in block 958170 (2026-07-15T17:53:56Z), 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/QZ5AB2300918.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x54de78320ba6de528cbcdec53f0e89948d3a4886d9fea151f795fd87d2adc2c5. Chain 2 (Bitcoin): anchored in block 958992 (2026-07-21T12:25:54Z), 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/QZ5AB2300919.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x9e7f512140a33bedebdcb6a2908a449e2ec36a81ea5cda2ae580999a298e0b6a. 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/QZW9K2382527.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x7e93030153c1d542f5dd7839834b52b88b9f638f15d5a8b011085de2efa52bef. 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/QZW9K2382528.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x1cd4150fc9696ec353b8071371bd44f9c82adf206fe5245d31c1d7e07d167586. Chain 2 (Bitcoin): anchored in block 957754 (2026-07-12T21:26:22Z), 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/QZW9K2382529.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x98c721cc30eb360074ed0100d3b2b0b6b4ef654ca92607c4f8cbb0914bf3520c. Chain 2 (Bitcoin): anchored in block 958350 (2026-07-17T04:02:09Z), 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/QZW9K2382530.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x6c920c371c794ccc0ad0bc492764138dc09f7d823874850abbac68f07483b773. Chain 2 (Bitcoin): anchored in block 958734 (2026-07-19T12:54:58Z), 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/QZW9K2382531.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x1816dc558c247902202518282d203cd5f0ecb94c42eb989661e5d4fe554aa022. Chain 2 (Bitcoin): anchored in block 958602 (2026-07-18T19:28:16Z), 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/QZW9K2382532.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x4f7e767ec63e852bab428bff4f7ffc7b1e4a6fec8b661196fd300daebacd25a2. 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/QZW9K2382533.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xb1f7954fa1264baebd6119553c0781520fd3464385ed57c47db57418af8ab369. 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/QZW9K2382535.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xb44756cf4499ebb4d4492c437f300854e868d354aa0299e9de493c659ecacc59. 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/QZW9K2382536.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xe01514d47d96ddbdb973395c701ad41a57071884af9b045c0a1fdffd64b51b37. Chain 2 (Bitcoin): anchored in block 958734 (2026-07-19T15:47:22Z), 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/QZW9K2382538.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xc44eb5e69beb397ea7018775298d1b653143acb6432d6b94fec14ebe3cbfb96d. Chain 2 (Bitcoin): anchored in block 958496 (2026-07-18T04:43:53Z), 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/QZW9K2382541.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xa5727c8d279e98021750f4fb0052db0def2feb6eaed55e62d76145019319d1cc. 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/QZW9K2382542.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x58a8c54f41ee572f093379f910f4f82a1e18a602eb2eae2968e7086bc3242431. 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/QZNJW2453605.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x7fc51f228f515f940d38c71cf2635281d9a56d1df5dbd2751fcd67df88ad1c17. 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/QZNJW2453606.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xc43abdf639bf7930acb8455b982d7400cd6942374f2d222ab5f7b0edd4e0e237. Chain 2 (Bitcoin): anchored in block 958461 (2026-07-17T23:18:11Z), 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/QZNJW2453607.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x8a667cac80f1608096d72e2f47897ecb00f4daa8471ed721c1e9b53d6ac55431. Chain 2 (Bitcoin): anchored in block 958271 (2026-07-16T09:16:54Z), 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/QZNJW2453608.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x4cde165de0a785895c560605967148ae07b0320c4b88680f487bf673f81fa052. Chain 2 (Bitcoin): anchored in block 958568 (2026-07-18T15:23:47Z), 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/QZNJW2453609.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x94268ed73114a24a0a38da7b8315100bc93e9b9493df63fe61f1ad0d9db7f60e. Chain 2 (Bitcoin): anchored in block 958945 (2026-07-21T00:35:28Z), 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/QZNJW2453610.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xc968e352176d5de3d7416c5e5ec2b73f2ac1db6b3ba2e3b01f2d6c38104edda5. Chain 2 (Bitcoin): anchored in block 958300 (2026-07-16T16:14:30Z), 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/QZNJW2453611.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x626ffc41bcd3f361f66727a459f2f5e84a77dd80259f85b116a65e006918d253. 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/QZTVM2448806.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x14b5b7c9ac2b5d42b37405718f0c2772dbd1b9c50c00e1d1b842c55fa75c2db8. Chain 2 (Bitcoin): anchored in block 958742 (2026-07-19T16:29:19Z), 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/QZTVM2435168.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x802ae1fb0a5b6b6ab841f8b8ff716045147f72e62c550d93852a8ebfe4570355. Chain 2 (Bitcoin): anchored in block 958316 (2026-07-16T21:28:20Z), 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/QZW9K2459549.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x435c51f454575189fad57ac923601d74b5cf2f28c3d8299ec8cb9381853220cd. Chain 2 (Bitcoin): anchored in block 958110 (2026-07-15T06:57:12Z), 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/QZMZ92576567.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x16778390faaf199ae2537eec0c5d58785d6333824c640fa68f65c591881aec9e. 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/QZNJY2586381.