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 0x6323c169235abc8919372fbcf4fa8752e5ef830391d1bbac7a19c51beba2face. Chain 2 (Bitcoin): anchored in block 954615 (2026-06-20T22:44:50Z). Bridge: the canonical record inside this Bitcoin proof contains the same CopyrightID. Verify: download https://artists.proofprofile.net/proofs/artist/c6ac9de4-4181-4223-9c84-373592b8a45a.json and https://artists.proofprofile.net/proofs/artist/c6ac9de4-4181-4223-9c84-373592b8a45a.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 0xe54ff780a34cc5d43c1f6f9034c4b70e9a54bc52119f1d0fb9e080ca00392f68. 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/USKRS0320101.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xdcd7e69dab6ba769726edf1c19c37e8c5c65a1a40bfa32d03dbf73c0ff04b329. 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/USKRS0320102.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x0ef1f809795a8e26c48b956bf8957e661c4c0db0dbf9dd09cfedff5d27c00790. 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/USKRS0320103.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xf6ce7f23004def336c9b46be73322b76a02dcb32d4138c0e68667dda3c54f282. Chain 2 (Bitcoin): anchored in block 956889 (2026-07-06T06:56:49Z), 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/USKRS0320104.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xc271f3574925f54763be478aaaa99b7fdf4f189d5a667e20aaeed27f17c94164. 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/USKRS0320105.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x71e863b18bb158461b7695c317277682f0252b10990f74b25cc36eae3943b591. 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/USKRS0320108.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xc0d53b255a702b4e71c9a61a52b96f9ef81dfb36309721f29f3fb6e1d7c16081. Chain 2 (Bitcoin): anchored in block 953513 (2026-06-13T12:47:07Z), 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/USKRS0320110.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x999b5051e9ff43cbceab68259f52201ab13a629d7cafa1377b596d3140351e70. 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/USKRS0320115.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xf1783bc78a98e5d39a35f9c430af0880b08aff9132d121a83539f30b64b9cd35. 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/USKRS0320117.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xc0bf7e0403bfe13bb05e95cc879d9075e626916c9e751bbf0b1b6cb3a0e80cc1. 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/USKRS0320118.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x580e9a8cb932cd65a229cb9019685e0a37f1502f4bd1e4b97260a4d837ac204b. 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/USK110403801.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x975af237fa0cde1954971864fe530e06d4f87e9779858fa6f1f7de3ff67f13ad. 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/USK110403807.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x1c0d79c78d34de0599eb3902e466e535729791ee64e408e81b8da56feac2b0ea. 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/USK110401401.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x6f51ea0e69905d185c6be5ffeb89913de250e8b24dd2cb1f1a8175f4f2402f77. 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/USK118800401.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x0e9659fb7922b1bbd1c8deef59b351354e09f16707688e50a0991fb2b53523b1. 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/USK118800403.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xea14590f78a259bf8e94b169e0df64152771305a1ab93de77685da34019ee9dd. 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/USK118800407.