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 0x353fc6def132cdbad6a5196aa83098f04b358a7d5253b2b7656cbd29126f9451. 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/4586e781-57ea-4159-b71b-37f6523687a1.json and https://artists.proofprofile.net/proofs/artist/4586e781-57ea-4159-b71b-37f6523687a1.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 0x023a408035e9ec3d1ed0f8aeebe854ff0ea1add3e6f07334f5d5e5c634e1ea50. Chain 2 (Bitcoin): anchored in block 956826 (2026-07-05T19:27:56Z), 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/PLU242000001.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x8b47a56906db50202815d9724e5d60c22d362fce5fcb46348a12783c056c0f12. 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/PLU242000004.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x2899c273366d67d48fe34dcc3e8ec74ef07d1b2b12f05e00ffea718380b0fd06. Chain 2 (Bitcoin): anchored in block 958137 (2026-07-15T11:10:28Z), 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/PLU242100022.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xba378e31482ca6f33a63e8bb5a016a6a4be7aab73f5f7d63d4f72c208c41ad05. Chain 2 (Bitcoin): anchored in block 958170 (2026-07-15T16:21:50Z), 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/PLU242100025.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x284aa15b8e5cd28267e24b767b3defa57e5a59680b40d941be13f8fc1ecf8023. 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/PLU242100027.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xdfb5fe5567eb9e0d888df0df4b8106e30a7c81207a558d31f7a78fb1ce144907. Chain 2 (Bitcoin): anchored in block 956576 (2026-07-04T02:06:47Z), 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/PLU242100028.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x9e7bd6a21663f3f623a67d49d3ea5ff1b0831607b76b0a393eeadf9756e5d580. Chain 2 (Bitcoin): anchored in block 956826 (2026-07-05T19:27:56Z), 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/PLU242100030.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x88c1d5e5bbec750cc8824a9194c5c8058bd90322103966f064ad45df7e96e351. Chain 2 (Bitcoin): anchored in block 958170 (2026-07-15T18:51:46Z), 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/PLU242100031.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x389372b9ea6add9bdace186d44f1b737b08f7d1998fbce47ef1e3befa9d86ab7. Chain 2 (Bitcoin): anchored in block 956738 (2026-07-05T04:47:21Z), 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/PLU242100032.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xe6b734b007ea8bfef202abee20f2eff2e58c8c7f0c5ee0fd64b7f2567a0cc03c. 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/PLU242300046.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x82b85ae816df31c81c0dfca302745d1abcabf204731ee460e8599e5b8c091a83. Chain 2 (Bitcoin): anchored in block 957863 (2026-07-13T14:41:15Z), 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/PLU242400023.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xc4da5b9d2fac10fc31874e38c79bde7d99026264539b02d750c26c6ab7b81df5. Chain 2 (Bitcoin): anchored in block 957863 (2026-07-13T14:41:15Z), 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/PLU242400025.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x9ff688c3629727eee00f203a74f9762f8ee27a209e094a920b3065767d96c440. Chain 2 (Bitcoin): anchored in block 958211 (2026-07-16T00:09:29Z), 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/PLU242400026.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x29c3b003397169ee8ceb30ea5fbbf98085e4c55f23313c2c8b740bad3603d7f9. Chain 2 (Bitcoin): anchored in block 956639 (2026-07-04T11:19:20Z), 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/PLU242500013.