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 0xe45dc04cace3b48ae531c205c87f876375d58b468df01e12b4e51e2164952a8e. Chain 2 (Bitcoin): anchored in block 953423 (2026-06-12T21:20:00Z). Bridge: the canonical record inside this Bitcoin proof contains the same CopyrightID. Verify: download https://artists.proofprofile.net/proofs/artist/e805f684-1a74-4fd1-823a-ac0cfefc10d8.json and https://artists.proofprofile.net/proofs/artist/e805f684-1a74-4fd1-823a-ac0cfefc10d8.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 0x3a88b150e42df5c9ef93c6bea5f6bcfd3598b0835673ee0dcc02c09c1a4c9065. Chain 2 (Bitcoin): anchored in block 958749 (2026-07-19T18:36:04Z), 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/QZ4JJ1989407.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x0c554a2530fb4e779154d0d159283f1e0c1fd38cc2212d3f58668636baad5300. 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/QZ4JJ1989409.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xb12d97128348ad9e98ed402a6703693035604bfa027e7b67de8d94bae75a9200. Chain 2 (Bitcoin): anchored in block 958917 (2026-07-20T17:53:56Z), 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/QZ4JJ1989410.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x1cbe81ee95947d0fa021114b89328fbdf9fc2f19eb4cb718647cf959a5cb96dd. Chain 2 (Bitcoin): anchored in block 957899 (2026-07-13T19:36:39Z), 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/QZ4JJ1989411.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x66ba1d9c33efaf6d3515163b8152bd547b9de5b31a104627564c691891718993. 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/QZ4JJ1989412.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x261dd2dc275788d763bfaf6eb537e017f1c072d70effb30e963db6563754c545. Chain 2 (Bitcoin): anchored in block 958238 (2026-07-16T07:23:45Z), 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/QZ4JJ1989413.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xbc9f9c08fadde3cdb8dbe67f89e63d4fdfd06f16c6b8a414e672d5b8be9b23c4. Chain 2 (Bitcoin): anchored in block 958977 (2026-07-21T06:27:23Z), 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/QZDA71932548.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xd48e07c01c6c6a94a6d281ef2e169f8d212d227f6ea3b4980ca49233fab91701. 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/QZES61912338.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x82552ef3959abfa81a12c1db659a11ffbe83e0c44478c2f3eb1241463d0d0738. Chain 2 (Bitcoin): anchored in block 958203 (2026-07-15T23:58:19Z), 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/QZFYY1950931.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xef5cd45e34fa98f172477025652abea921c16f4134d9cf13444e542f281a0640. 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/QZFZ31964186.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x7aa7dd3a24a8fb4d5ae664c09da7635ab1fa53954e036a76ec2fa6cf9bd16401. Chain 2 (Bitcoin): anchored in block 958544 (2026-07-18T12:14:37Z), 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/QZFZ61961872.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x8db53c94124f026c7a78950eadaa9fe678f0604c87241d37d7b927528a83dec7. Chain 2 (Bitcoin): anchored in block 957540 (2026-07-11T08:19:50Z), 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/QZFZ61961875.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xbad69138789e15d338023428c08d8bfb216dcc35738f8a4d06aaf0fd790e05be. Chain 2 (Bitcoin): anchored in block 958331 (2026-07-17T00:52:22Z), 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/QZFZ61961877.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x03c251483d09a09a1f5daf21d8bda42e03c5d772915a5c1ed6bc0fefabb2246e. Chain 2 (Bitcoin): anchored in block 958357 (2026-07-17T03:33:42Z), 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/QZFZ52096172.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xd6a4f13d55a7f3390572e754a1be8ba2327b12182c04af91c59f3384e4126523. 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/QZHN92128874.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x0d2ebea097801f611d54632d6ae2e5c3f418f76cc86cf90987ae15df0a01a67b. Chain 2 (Bitcoin): anchored in block 958384 (2026-07-17T08:27:02Z), 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/QZHN92128876.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x51b6c04c2f298a7c8dc19cc5a985c60f8efdd69b118c94ab6e91356792d73f38. Chain 2 (Bitcoin): anchored in block 958211 (2026-07-16T00:12:15Z), 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/QZNWW2104223.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x538317e8ac9a0822dfa0ca40724471736d76f2d4c949a7daf8c8f0d44ad81a03. 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/QZDA42224490.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xe2c567a9d4cbf3965da71131ae04eb9210e877b9bc8247d0d3b77e3def4c6611. Chain 2 (Bitcoin): anchored in block 956302 (2026-07-02T03:30:09Z), 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/QZK6L2222694.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x8ec43747731983913e574c3fb21770f6f7d5af6dc0d0d7dcb4117a374f3fbb43. Chain 2 (Bitcoin): anchored in block 957540 (2026-07-11T08:19:50Z), 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/QZTB22295685.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x89c31ff7a9bbdca0fccd699b023df38068d7391bc276b4b2c1b36e4a12390069. Chain 2 (Bitcoin): anchored in block 958116 (2026-07-15T10:02:47Z), 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/QZTB22295686.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x71c746e099604672c1081641a6015bd4e21a4ca85066db636c4a78923051b781. 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/QZTB22295688.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x51b6c04c2f298a7c8dc19cc5a985c60f8efdd69b118c94ab6e91356792d73f38. Chain 2 (Bitcoin): anchored in block 958373 (2026-07-17T08:55:34Z), 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/QZNWW2104223.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x7b4d8edaeaadc8bd1df2c499a1c86831eae439332620f0a57b56bb64fa272140. 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/QZTB22295689.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x6e7eef1b527c17594b229b6df5638153158d953339d4a59d4b2074927b0eaed6. 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/QZTB22295690.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x78e78bc2ac3d13b379134f6f074f8f231136051464207c8830e8b662759d1ca4. Chain 2 (Bitcoin): anchored in block 959087 (2026-07-22T04:23:00Z), 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/QZTB22295692.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xc29b44f178ba68490d1e5bb17b0ae01af337e34cc4cc0a168cacf8055d23151c. 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/QZTB52363817.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xe297821b74f14b842462f72ec9a27ef1bc631efbe1e1f2eb5166d3b8fe7c1e18. Chain 2 (Bitcoin): anchored in block 957540 (2026-07-11T08:19:50Z), 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/QZK6H2421632.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x372c3788743b5d05aa2962076b882a7b13d9f32dad9894fd8f136bf0a15cbdc6. Chain 2 (Bitcoin): anchored in block 958058 (2026-07-14T20:20:34Z), 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/QZZ792473158.