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 0x0a88cb7ba63799b0f9d5d57fe6f2bde395abe00a523b5b6d9dda8fb49dda2126. 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/8b92b9b5-0199-4a26-ab34-6cec14a424e0.json and https://artists.proofprofile.net/proofs/artist/8b92b9b5-0199-4a26-ab34-6cec14a424e0.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 0xcf7c26b248de963354b3266c46cfb1a8763cd2a287b1bf9a0916a81326ba82eb. 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/FR79W2100110.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xa97449f3dab730ce83df2ec14bf0e626ffddcc7e13cd65b2a0745780f40c0d29. 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/FR79W2300200.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xcebf27cab119153eb3d018b740e182d8f2ab877e8f4e83bd87910093a367770e. 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/FR79W2000610.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xd17d5e6837261fd165cab3aa5ae7842ae3a6ad09b4d821c67fa5fde385a32a18. Chain 2 (Bitcoin): anchored in block 957061 (2026-07-07T16:07:00Z), 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/FR79W2100510.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x49fb22a2cd1d34a22e253ab82fab34f3876456a7ccce0bc2317e1a8174c1561e. Chain 2 (Bitcoin): anchored in block 957145 (2026-07-08T08:56:20Z), 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/FR79W2100640.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x542c347cb82600f5f209694edd99c20210b045b0767525d8f200aba1763d2588. 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/FR79W2100520.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xf6d71bb3f8ddf28d726d3a83db4a093f997ffd89397d51eddd9bbb2d2dfa82ec. Chain 2 (Bitcoin): anchored in block 957124 (2026-07-08T03:53:27Z), 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/FR79W2100660.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xcf7c26b248de963354b3266c46cfb1a8763cd2a287b1bf9a0916a81326ba82eb. Chain 2 (Bitcoin): anchored in block 957124 (2026-07-08T03:53:27Z), 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/FR79W2100110.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xe2319cd0c940d912df10ae7470ae7dc1f815ed272abe4149cdefdc46063045ef. 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/FR79W2100120.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xde42624b013afa1225a1c947c16ed032c05240c4dff872dccd30f6ef686252fb. 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/FR79W2100680.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x2f85f4c06f45a2e3f49441cc5a456be99d0722bc11b234af85fb4fc6b9e668c6. Chain 2 (Bitcoin): anchored in block 957061 (2026-07-07T16:07:00Z), 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/FR79W2100550.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xe220b9385527a1507dbdf2b9231b419de63dd9f8d4147baf7cd14d37b34498d1. Chain 2 (Bitcoin): anchored in block 957120 (2026-07-08T03:22:41Z), 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/FR79W2100700.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xca24a488087248af3d58d39edc10feb2085b285884dfedef1332595ac2bc4ece. 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/FR79W2100570.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xe3cdf05734a79f8c57a6d6d8f05b0ff2550336638e99068bcc404e9de40f2f84. Chain 2 (Bitcoin): anchored in block 957120 (2026-07-08T03:22:41Z), 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/FR79W2100710.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x3f6cc2d87c4cedcd116c030af2411f1911e8bc09940db1d766b711d6efc322ff. Chain 2 (Bitcoin): anchored in block 957032 (2026-07-07T11:43:09Z), 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/FR79W2100580.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x749d7e504bd2cef38d09a71dec952786c092ed29c3747c6bc1c5ef745d33d6c2. Chain 2 (Bitcoin): anchored in block 957052 (2026-07-07T14:50:41Z), 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/FR79W2100590.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x729fb33e98c174fd1de7cc6ed2ce28c8dd13fe32f9db1217b080f15f6b803266. Chain 2 (Bitcoin): anchored in block 957122 (2026-07-08T03:39:04Z), 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/FR79W2100730.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xcebf27cab119153eb3d018b740e182d8f2ab877e8f4e83bd87910093a367770e. 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/FR79W2000610.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xcebf27cab119153eb3d018b740e182d8f2ab877e8f4e83bd87910093a367770e. 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/FR79W2000610.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xe2319cd0c940d912df10ae7470ae7dc1f815ed272abe4149cdefdc46063045ef. Chain 2 (Bitcoin): anchored in block 957124 (2026-07-08T03:53:27Z), 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/FR79W2100120.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x3f6cc2d87c4cedcd116c030af2411f1911e8bc09940db1d766b711d6efc322ff. 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/FR79W2100580.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x49d9912417089dbbf844aabc026a181a94d1a0ec2f94f1f2d8ad3213fbb531bd. 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/FR79W2000820.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x1dba141416429088b2ec86a1c96cf1ccc24130d4d4996505aa90e5ad0ebf09c7. 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/FR79W2200110.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x6bc2342d452fca035127541cff8ca2626bcdcdb986d016806e575b8952b69044. 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/FR79W2200050.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x2520ca205c5c7ff8bdc98115aef4b3e5cb51d6ff8c2b4ed31018ba9d52604e5f. 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/FR79W2200060.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x8a983f09f8e968ece6618fd36e2284b8ef400cc90d74476d8480101c3e96a189. 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/FR79W2200080.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xbeb3866d7575f9de71bed34675546c07b6f030798a3209b57cda8e7107a35743. 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/FR79W2200090.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x90ad319d912f283a92db78938ebbd7b205eaabbe9d1f9772553ec10133f64bc1. 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/FR79W2200120.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x8b1080c361c9e1d6cb048d0d086f2dac448506d9c81a9e3f89d7333a39f39b8a. 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/FR79W2200070.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x75ac85ea8f6c274f4230e55f4420e6e0d43841f0ce06ed6368060ff0575fab9f. Chain 2 (Bitcoin): anchored in block 956894 (2026-07-06T07:53:57Z), 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/FR79W2200130.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xca2849fba50c02bab99d8a9f462ea6104aeac3b4164a3ef0b5b7f42e173e415a. 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/FR79W2200100.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x49478c3f837708a56cf1940beacb626f439e312f53c9563ef1860f6d8d0ef0da. 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/FR79W2200140.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x867bfa9856fb6c492dcd3de0dd3b0a92a11f2572dd1c257ac6fedab5b665dbdd. 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/FR79W2300140.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x8b1080c361c9e1d6cb048d0d086f2dac448506d9c81a9e3f89d7333a39f39b8a. 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/FR79W2200070.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xca2849fba50c02bab99d8a9f462ea6104aeac3b4164a3ef0b5b7f42e173e415a. Chain 2 (Bitcoin): anchored in block 957120 (2026-07-08T03:22:41Z), 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/FR79W2200100.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x49d9912417089dbbf844aabc026a181a94d1a0ec2f94f1f2d8ad3213fbb531bd. 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/FR79W2000820.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xe3cdf05734a79f8c57a6d6d8f05b0ff2550336638e99068bcc404e9de40f2f84. 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/FR79W2100710.