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 0x58a159a55b49f8ccf34b0f84b35dee6d6bdf62f22a52b15e66a10d1bf0e9a3ac. 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/d319a25f-9de8-4d87-89a5-69fedd62873e.json and https://artists.proofprofile.net/proofs/artist/d319a25f-9de8-4d87-89a5-69fedd62873e.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 0xa6a1f78141bd5c5db4db9658e5e8d5661c9ad30367c5e3f1a3c9b06978fba73c. Chain 2 (Bitcoin): anchored in block 958170 (2026-07-15T18:59:19Z), 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/QZW9M2252056.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x30860f99e67bbd19dc9962c874ef34cc89db8b6dcb60e58964347acc701112bf. Chain 2 (Bitcoin): anchored in block 958622 (2026-07-18T22:58:55Z), 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/QZNJV2336754.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x67e8bff98f295668691155e46df8d7476ee717f2de73f561874709d42528ffe7. 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/QZNJV2336755.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x63f5151a34c8a9ca5a7057d7aa03814d4d2b7ed2fc746d37c35ce4ca20e3f811. Chain 2 (Bitcoin): anchored in block 958690 (2026-07-19T07:14:39Z), 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/QZNJV2336756.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xb68c73a4d28bce70723cbc18a34a74c6deb061579cb0faed3551d4e57ad06c7e. 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/QZNJV2336757.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x7015ef64e76df614c1da401cff47bcd9389591e9dc129f3323a13cec3d2de81b. Chain 2 (Bitcoin): anchored in block 957603 (2026-07-11T20:26:17Z), 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/QZNJW2386230.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x44638ddb4f581efb877e55ad8fda7af18e174e61a2bdcbd670df2b3b845a8526. 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/QZNJZ2304732.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x7015ef64e76df614c1da401cff47bcd9389591e9dc129f3323a13cec3d2de81b. Chain 2 (Bitcoin): anchored in block 958448 (2026-07-17T19:49:21Z), 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/QZNJW2386230.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x726639a6d87f0cec9ee17213d6866fa0a0595f3f0d6f9bd186f0672ba42fbbb1. 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/QZNJY2332021.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x3560b285fbc7c1d855ae7e304c19c5f00f3914b765493db99aef2af55eedc911. 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/QZW9K2208372.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xf7d50f11816968029c9820a444cf2205f7d1a4b79452d162f12d07f8e62b24cb. 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/QZNJX2269514.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x1292d743ddd23d9bf858248fb95ad05c3b4ba3dd723ad48c71c733131eb1db56. 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/QZNJZ2463666.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x1292d743ddd23d9bf858248fb95ad05c3b4ba3dd723ad48c71c733131eb1db56. 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/QZNJZ2463666.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xd1df500fc54da1e9942652fc460529c7791689d87d5e6d3a71eb8d08066e1407. 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/QZNJZ2465708.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xdaf6a468e5a36509cf453704a531dbf52f35f9d6436d06cbba5c09354c2cb3ff. 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/QZNJZ2465709.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xfc91835fec07ea5dc0b9c760ebb30f342a3948d8e3d4a76ee0015e81729a276f. 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/QZNJZ2465711.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x884baee9109937f626d15c0999e82d20fd0bec5d7e058c3855940e3687df16ff. Chain 2 (Bitcoin): anchored in block 958721 (2026-07-19T11:02:33Z), 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/QZNJZ2465712.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xed936e52fd327a72ff58818b434922ea451698d1a02f06de7b0d5bfeff7b65af. Chain 2 (Bitcoin): anchored in block 958823 (2026-07-20T06:54:13Z), 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/QZNJZ2465715.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xe3bd3dc413310267ce08e8c0acfb3fa6ccae698822dd5e303c5a9d523dc82568. Chain 2 (Bitcoin): anchored in block 953528 (2026-06-13T15:41:10Z), 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/QZW9K2415334.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x12a2cdd53412c9ac50ba8d38d98da9894db004ed34dc0d8f51d67992d5bf0599. Chain 2 (Bitcoin): anchored in block 953536 (2026-06-13T17:25:41Z), 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/QZGLM2491950.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xa6e37979d79c4b29bbe456367fd466e1851e7d4f0734626607bae3c2ec6eafdd. Chain 2 (Bitcoin): anchored in block 953528 (2026-06-13T15:41:10Z), 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/QZGLM2492441.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x350873ad1a7694eb69161bf9ba8af92334d2fc3df683b4e66caf1cb3f205b923. Chain 2 (Bitcoin): anchored in block 953515 (2026-06-13T12:53:06Z), 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/QZGLM2492487.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xb5bfcdaed8cc72f62e492606f08ab30b89d190524e3800bd28bb8d5e2a7969f2. Chain 2 (Bitcoin): anchored in block 953515 (2026-06-13T12:53:06Z), 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/QZNJV2431212.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x1beb17e8a3cd61d023f2c995f423fdf80a03065472d88231f109161deedc3f79. Chain 2 (Bitcoin): anchored in block 953520 (2026-06-13T13:32:09Z), 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/QZNJV2431213.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x232dd535a89eced3d2a6e6f3a9b3211bf12a98eca0a3f7108fe30c545904a7c7. Chain 2 (Bitcoin): anchored in block 953515 (2026-06-13T12:53:06Z), 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/QZNJV2431214.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x25d78d62085a7275285eea202729ab3cf3489a92213135ed1dfbd0e7fc5d38a2. Chain 2 (Bitcoin): anchored in block 956312 (2026-07-02T05:09:12Z), 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/QZNJV2431215.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xf67a9bf66cefa975e42092d4ec62ee56cbfcad9fb371fa573035123f93099d14. Chain 2 (Bitcoin): anchored in block 956349 (2026-07-02T11:34:59Z), 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/QZNJV2431216.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x86b5107be53f40277c87c636929634bc8431cbf81931620aedcacca48d75bc12. Chain 2 (Bitcoin): anchored in block 956349 (2026-07-02T11:34:59Z), 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/QZNJV2431217.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x5e67c39bfba5f289e790cd9b169f187e5e716d4dfa9f148bc4c166006249c230. Chain 2 (Bitcoin): anchored in block 956312 (2026-07-02T05:09:12Z), 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/QZNJV2431221.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x8fad29d4b0ff96fd58f0d79ea6102f56bd5afb48127294d02e52527340128a82. Chain 2 (Bitcoin): anchored in block 956304 (2026-07-02T03:55:08Z), 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/QZNJV2431222.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x5c5145cd3bfc4d576cc41b48a9e6cf0c07f1fd1d0bcaa1571e7783656790b2b6. Chain 2 (Bitcoin): anchored in block 956304 (2026-07-02T03:55:08Z), 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/QZNJV2431223.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x91391aa47eac82f4d41a68ecf7164c1dc9b5387b85d0590e785966f7d372437d. Chain 2 (Bitcoin): anchored in block 956312 (2026-07-02T05:09:12Z), 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/QZNJV2431224.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x62df652b8b7bb91000a87206711ca6e748d5cd4c2fa1b486cdbb2b322f8f972d. Chain 2 (Bitcoin): anchored in block 956304 (2026-07-02T03:55:08Z), 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/QZNJV2431225.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xae70c450ec81c82c6ffc7f776dd00a646e3884fcebfd512f2fd0a5dcde86c31b. Chain 2 (Bitcoin): anchored in block 953528 (2026-06-13T15:41:10Z), 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/QZW9K2425349.