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 0x031f93e7c730b82f06a907476cc63cbf84de57b0212ff1d8475b558919fd0612. 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/293551a0-a437-42f8-af45-cef1d5a2921e.json and https://artists.proofprofile.net/proofs/artist/293551a0-a437-42f8-af45-cef1d5a2921e.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 0xf326354a6d54da5408ce855a4439f1d999e83094270d7e748eb1a2bd144e9623. 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/QZHN72177217.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x97217978ab202306d9542a4956270119b701358b2c4eb664bf377930d449004d. 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/QZK6N2103604.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xbbb2758c8612c99a8100ac7124ccad7c4e36784fdadf2fce940d6ac46cb193c0. 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/QZMER2186630.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xa801867c638c00ea0157a8f085667f014aa8e4f42a1f79206d12cc995f08743a. 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/QZPLR2157466.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x02dd90c9d533fcb37583af41ad0f3c0777779c91f64976cc40ee9ea5c25c2176. 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/QZPLS2139220.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x66dc66e1dc104af1f427bc2fbc39f1b650ea6fa64639f32fcaf66e8f4d8c90c9. 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/AUGBT2210987.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xd5995c75cd0236bc0a04c4fb3952e2c6a5c0abe4e1f6e7a77187ffa0d1365619. 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/IL6652205476.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xb14d5c3b19e2f859cb2f5f628f805c40510400d1c91a3d9b0705d00638996c05. 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/AUMEV2336396.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x6b2e15b6d4ce2fb5ece8081be08c8acf0c6192432a006c591d6677aa0d3151e6. 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/AUMEV2360047.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xb9dcdb0692b2f6e759a37850613f750106eeff344029facebd91886220c07146. Chain 2 (Bitcoin): anchored in block 958163 (2026-07-15T14:38:07Z), 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/AUMEV2371015.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xc220d48470aaa527c460b94034b8f7096bb2acecc279213ec16569d33974dc13. 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/AUMEV2371016.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x6fa2a5d98e4452db68c882fb4885a008998c2d6536b916183577e8e7f1afca84. Chain 2 (Bitcoin): anchored in block 958074 (2026-07-14T22:45:25Z), 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/AUMEV2371045.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x2f4ee600ff5e0bcce2f6bbca025154b5481517f91f2b5cda6f9ab71eee48eee3. 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/AUMEV2371053.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x894bb54062c402855a488821a98a3a174df0a5d4312ef23013ab044e556487d6. 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/AUMEV2389461.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x75466fb16fd974320597635f3b471f204591f614c57b52be80cd3d1da6025564. Chain 2 (Bitcoin): anchored in block 956402 (2026-07-17T03:59:49Z), 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/IL6652307329.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x223e40cee68d5b089118e20a6182e0e4aa7ca19142bd01741be43b6d0c536361. 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/QZWFK2313790.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xffea487af53fd01a19975d7196b149430c76046e6bf0937f2b8d41938211639e. 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/QZWFK2313809.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xc32e183f63183b3ec4dcd0d0d65a472e0fe1991a3b7ee53e71d94be310dfa228. Chain 2 (Bitcoin): anchored in block 958444 (2026-07-17T19:12:23Z), 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/QZHN32463245.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xd1a5c78ec14427b78d0c689834860b422272dfd8bfaa60cdf682fd343cc4e1cd. Chain 2 (Bitcoin): anchored in block 958444 (2026-07-17T19:12:23Z), 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/QZNWV2420684.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x01277770a38139d8fb79874cab411a6ac59d5acc1f410bc500309f8f32e4734e. Chain 2 (Bitcoin): anchored in block 956891 (2026-07-06T07:16:32Z), 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/QZWFH2494411.