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 0xf7213c11aab9b0b8818f43b29dbf790779fa1fe778ec7320bc27bacf68d22958. 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/18e18a69-b81a-4d58-ac05-77fbb85e8565.json and https://artists.proofprofile.net/proofs/artist/18e18a69-b81a-4d58-ac05-77fbb85e8565.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 0x330231b0dced078923af064e0a618c240e3b8cd165fc31b465314dd432a114a2. 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/AUMEV2486319.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x6ded8d6d3fd97acb5f5fc93a2cca14e199869e2ed47596428166235de0af7b20. Chain 2 (Bitcoin): anchored in block 958124 (2026-07-15T11:00:22Z), 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/AUMEV2486320.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xc29c007be6a3cc3aa37bcba94b3ebf439733f64a18be153b47fca23f04ccfe67. Chain 2 (Bitcoin): anchored in block 958256 (2026-07-16T07:22:18Z), 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/AUMEV2486326.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x3ea2a616e5ee61c22d05da67da4ecbc7194d3618e3043c5766734ffbea4f41cb. Chain 2 (Bitcoin): anchored in block 958271 (2026-07-16T11:01:15Z), 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/AUMEV2486327.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xf0bf8200410bb55f341ed9891a6761486b7043f1399b14d6c626c233ea1a5281. Chain 2 (Bitcoin): anchored in block 958319 (2026-07-17T00:06:24Z), 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/AUMEV2486331.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xa2116f05723d15bbc59fe06be83ee011b6dc31a93f5c184ed6e101f26394cbd0. Chain 2 (Bitcoin): anchored in block 958340 (2026-07-17T02:39:01Z), 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/AUMEV2486336.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x8c98c58e99f40f282b1657412ce53ea78a5d1a708646877fa7fd7f17b023a17c. 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/AUMEV2486338.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x4055cb91d0be614e09b0dabe68ef5df56090e71595cf9ce18f47ec03c18bbc16. Chain 2 (Bitcoin): anchored in block 958340 (2026-07-17T03:09:32Z), 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/AUMEV2497557.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xc345601f0c0eab01ff240af3b2d1e5d1cb58022a20cca06d5261bcb7495f7eb1. 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/AUGBT2402319.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xcf24c13b564dfe4c043ca5cf20e3ad0581382c2abd0b488fb5778325eb643b2f. Chain 2 (Bitcoin): anchored in block 958067 (2026-07-14T21:26:15Z), 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/AUGBT2432794.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xdfcb741bd9f364f6071b21bdd26ac2c26cb5cf37f531efe02d647e69c26e51d5. Chain 2 (Bitcoin): anchored in block 958489 (2026-07-18T04:13:26Z), 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/AUGBT2445155.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x94292ff9dca66df82f937ce1363185a1c4e6d02a63cc5efe317c3880ab3bd109. Chain 2 (Bitcoin): anchored in block 958256 (2026-07-16T07:22:18Z), 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/AUGBT2445185.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x7d11a63fbccf451b1d9340ec1c7be97e647c86bdd933c5a05ab3b0e608991ce4. 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/AUGBT2445778.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xc5765b6d910fac4b1b9ca2d2ed6c68a4f5221db1a80fa503d1ebc87090526950. Chain 2 (Bitcoin): anchored in block 957741 (2026-07-12T18:30:59Z), 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/AUGBT2445798.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x7e88b259a0814377d9dc7efb48ec262c74219227ef5ebd43bd246fc184f487e3. 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/AUGBT2446260.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xda08b22602de56d68f529aebc7a7f08c321e6ae4e9e533eac5388902be908730. Chain 2 (Bitcoin): anchored in block 958342 (2026-07-17T03:50:21Z), 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/AUGBT2476229.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xb8401d7f2383bd60074f0141374e6b1a226d21dd82b9447a6e2ffed5c839d456. Chain 2 (Bitcoin): anchored in block 958256 (2026-07-16T07:22:18Z), 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/AUGBT2476231.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xa654aedc28fddd10404a69c3cd85f2466361230993d9daa652429648f992dc00. 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/AUGBT2476237.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xbd7ca6a6a284ae1c9fe215f68e3ceb362bfaf603ccd1a42349d2ad07df027bc1. Chain 2 (Bitcoin): anchored in block 957730 (2026-07-12T16:41:26Z), 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/AUGBT2476238.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xa0c4cda448097325563c1dbea620419009dfcc546e1a758be0052326d7802b85. Chain 2 (Bitcoin): anchored in block 958075 (2026-07-14T22:55:31Z), 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/AUQ9D2400518.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x41ae8d330a99032011de1a551a4b97ad0354bcab7156756a892d792d23935e6b. Chain 2 (Bitcoin): anchored in block 958631 (2026-07-19T00:50:09Z), 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/AUQ9D2400519.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x7207107f0260dff6b1de8ff85e49a3c94922477bc41ef7920163b6c57f5b6af2. Chain 2 (Bitcoin): anchored in block 956420 (2026-07-03T00:42:11Z), 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/AUMEV2534845.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xb2e9ccf73b238fbe0821ad8f28a53e4e7bdc83993cab440d461b74d94ab047b7. 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/AUGBT2402321.