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 0xfa0652b975e224aa2af46d14d37a6cf3da7289324bf40e6e1cf6d350997e8334. 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/143f81b2-b3c2-4073-9ad9-afc3f84fdce8.json and https://artists.proofprofile.net/proofs/artist/143f81b2-b3c2-4073-9ad9-afc3f84fdce8.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 0x5288e6714240a579bcf2c9e998afcfa8d202a1d87e25789ed36a2bf94428b2eb. Chain 2 (Bitcoin): anchored in block 956551 (2026-07-03T21:18:05Z), 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/BRLQX0900019.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xc8871a41cd0272ec6030736eccdda4bf570647e233a75b3e5b10121b669ce18e. 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/BRATT1000102.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x2a943a5953007782cef43f50c1b599b074dfda225ede3ea58b3fe683d155b67f. Chain 2 (Bitcoin): anchored in block 958271 (2026-07-16T09:16:54Z), 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/BR4GA1200003.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x354ffd14296d81b4555054c66cc02a974a2c50d92640700fe4153a4114fb285b. Chain 2 (Bitcoin): anchored in block 958554 (2026-07-18T13:17:01Z), 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/BR4GA1500077.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x89ad8e82a77807ed4f0f2027ee794a8bd7e9901594cb276d58746548318c8298. 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/BR4GA1500080.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x20d7d8d1c666b81c6d32d660cca67b53812028dac25255f9265f2acf19007e81. Chain 2 (Bitcoin): anchored in block 958319 (2026-07-16T22:00:49Z), 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/BRLQX1700006.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x87c658009b957807cf12c0228174cb057de090417fdaf5d6bb90d0d914a283bb. Chain 2 (Bitcoin): anchored in block 957884 (2026-07-13T16:55:06Z), 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/BC80X2200005.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x6aec3095509663a8c60e57631706b7a19707d60698fb7275bf3c2ee45a07834a. Chain 2 (Bitcoin): anchored in block 953515 (2026-06-13T12:53:06Z), 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/BRLQX1800020.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x9c0b70712631c190b2b3a7663105318c70fed7dc9899c542f2e7a0c3ccadeb35. 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/BX3QP1900326.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x61b9abc05de83cea121ef10e783712e46f64463f6023f499ee6ba14099a6f77b. Chain 2 (Bitcoin): anchored in block 958286 (2026-07-16T12:43:37Z), 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/BCSIU2100021.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x834f17174d47c82604543d04dfa1f888654fc5b17359db5be94b46fdb2974e67. Chain 2 (Bitcoin): anchored in block 958612 (2026-07-18T21:29:37Z), 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/BR4TF2302735.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x82da3b45d1f6c0c0b72a091ba7a4a897a9e5b78571706a4ab15ec48b852c0a67. Chain 2 (Bitcoin): anchored in block 958544 (2026-07-18T12:14:37Z), 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/BRLQX2100001.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x7c696d1df00cf4928d6e89c9e9f037322e1feb70d324c61ddc153979c71cd944. 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/BRLQX2100002.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xfae2f035b64f3a1d6a48aba218bb2aeae79dd710a47a123a85970674f0affba9. Chain 2 (Bitcoin): anchored in block 958428 (2026-07-17T15:15:14Z), 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/BRLQX2100005.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x55ca5cb8bca8cdea81c77bc6607e6e32e4a5c40acd3822ac77153d0033519f0f. Chain 2 (Bitcoin): anchored in block 958316 (2026-07-16T21:54:30Z), 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/BRLQX2400009.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xc36f4c1c270265a4819937dff19ba0fab8efae9cd523f34799b9056b3220db4b. Chain 2 (Bitcoin): anchored in block 953515 (2026-06-13T12:53:06Z), 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/BR9NO1300010.