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 0xc086c5016c8fd0be4fecdbe8ae8fd06c4bdf98eb6f35165cc894b5e9c19fa8eb. 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/590d5cd9-b2a3-43c6-be43-9c0001d2ecb4.json and https://artists.proofprofile.net/proofs/artist/590d5cd9-b2a3-43c6-be43-9c0001d2ecb4.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 0x823cdcbc93214e217c923cffc2d5de9acd3be8b8d7134c7a0b1c7badba60f7a7. 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/QZHNC2231061.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xbb45f223c02284af657b74bbf70eb1052b8ac8d257f06c2071dc8dd0832c7838. 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/QZFZ22492223.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x29f2ad3df5420d18f349bfb5ae9e31e9d2d14923cfdd424531c1a151b39245cd. 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/QZHN92497842.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x6961dd81d2c71fa0a218ab5493b838596c669cf819c3ce176dc5c93032874c47. Chain 2 (Bitcoin): anchored in block 958146 (2026-07-15T10:33:22Z), 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/QZK6L2469433.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xc20d520b944f50d297b0f944aebce68d7f20f6e88ba62ab11e6ae024097a760a. Chain 2 (Bitcoin): anchored in block 958329 (2026-07-17T00:19:11Z), 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/QZTB62421457.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xe2297e80cf951c942f911f35d608b217e30be8c37c805d7a3feda9d099c2ac4f. Chain 2 (Bitcoin): anchored in block 956776 (2026-07-05T10:59:37Z), 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/QZTBF2423730.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x7a7b48f9f03bc726d9a3532db37b77ad161bb68421dec52494060204595cb41a. 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/QZWFR2478900.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x68f00478291b87e5fa48a629fd0b9556e172ae4437b088be9cf92d38f00953d9. Chain 2 (Bitcoin): anchored in block 957118 (2026-07-08T03:20:19Z), 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/QZZ762471035.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xdd41e9438df1f7be0f74a9378bf4a52889201d4e5cc2a2c9993e929dd8d8aeeb. Chain 2 (Bitcoin): anchored in block 958388 (2026-07-17T09:14:21Z), 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/QT3EZ2433674.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x3d249c74b4916f8b6ed071130962457336444da389b59a9b4dd37f92589e88d8. 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/QZFZ42573019.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x63a51190ca59b501ccaf50b6dd95ff01f2c98e676c59e3d3067fb9835a64d6cf. 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/QZK6P2554893.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xab21bef22bbb2babf058e5ea7215314f52228569ebbc07fc2352e784206ba78a. 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/QZK6H2574175.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xf331b43b153b1226ab474c1121bcd768c58ba232c383b9b877f451f47822b6f4. Chain 2 (Bitcoin): anchored in block 957776 (2026-07-13T00:05:10Z), 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/QZNWX2558631.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xc33efc7c22e845c3a58993bccd051d10d2169339c73c53d606a06be6e1907fab. 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/QZFZ72442291.