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 0x015170e1df11b1c311bb6ed1b72274302342040d62e33ee4076728be32eeec3b. 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/3cbae4af-fddf-47b8-937c-cbd416f4f965.json and https://artists.proofprofile.net/proofs/artist/3cbae4af-fddf-47b8-937c-cbd416f4f965.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 0x51218c542528359f2669faed9edfe2d85f505224f0f667a4fd61cd83ebb3c05a. Chain 2 (Bitcoin): anchored in block 956545 (2026-07-03T19:59:51Z), 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/UKZJ72300503.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xce24ce423dbd4054f4903507dbdff024d6b77b1847005306134dc65cc945f021. 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/UKZJ72300504.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x1a25b39b9e10caa7445ebb2e70082cc9214e289d657469d540edd607e694ee26. Chain 2 (Bitcoin): anchored in block 958157 (2026-07-15T15:11:36Z), 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/UKZJ72300507.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xd710f68f43ef605377a2d03955018a493711c67c7dbac870e9c4ff59a25a6c42. 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/UKZJ72300518.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x0249dd1ee4df39e3bba7eb5343f6985e895d2652df60de479791d7825c1eec48. Chain 2 (Bitcoin): anchored in block 956545 (2026-07-03T19:59:51Z), 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/UKZJ72300517.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x83f0243ed69bc72e4885cbd14bb95a3061363157cfe047450f3fb2df911e450f. 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/UKZJ72300509.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xb272806a2df22164d6a5acae6a33eaba4e323999ff5ed9326bf55a419d580ba3. Chain 2 (Bitcoin): anchored in block 958680 (2026-07-19T06:04:14Z), 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/UKZJ72300516.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xc93a0b8bfa6a6738c47f51f9baf62c4cbf2588196d479beb85abb1c4147c1961. 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/UKZJ72300513.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xb3224c811d02c95a214ba7fea1f2319322f1a7cad6d4e47bfd4094fe10793c1f. 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/UKZJ72300514.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xd640f0d7e4b6c7407a20e31e326d548d119c627155427a72babd6e9c149141e2. 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/UKZJ72400029.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x967b2da2d50f61f9d94abb64439e7992ab65791509768b098b97fc7f49d1a0bf. Chain 2 (Bitcoin): anchored in block 956349 (2026-07-02T11:34:59Z), 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/UKZJ72400036.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xd78001477995e5b147c0391c58041fdaa13158443bdf51aa0ea380b08d362e6d. 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/UKZJ72400025.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xbd19df03422a21a338571a33bb34307063988252c6eb974c70842c2f800e40b3. 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/UKZJ72400033.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xc8cbf3921b16a7ba51d8a31d257af720c6e686ad036069e7e9da2f67e7d23442. 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/UKZJ72400026.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xa2459440e4f684f1212f74daf7dbab4c956c2b90aa329c744f92d0fd1bcd3102. 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/UKZJ72400030.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xffa5509de4f9cf7feb5f88f1176ae525ca327518f6e540ca8f19ac48d470772e. Chain 2 (Bitcoin): anchored in block 957073 (2026-07-07T18:39:05Z), 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/UKZJ72400027.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x94dbb169fe6a3691552ed2b80e298ebaaf800901e5c6ab71daaf6fcfb957e4aa. 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/UKZJ72400023.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x7190fb8bcead2aba500255554de2a8a71ad0d3e65a5b62c311579154f83dafcc. 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/UKZJ72400035.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x07f8541e6c92f942a5faf88653e70005611ef92a8208c916ecd9c0210049b8e4. 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/UKZJ72300592.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xf4aaf8de6ce2e32d2beff3282b75d3a96b37c8ff955fc0c23223e51250b9ad43. 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/UKZJ72300605.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x70620e0f617f1d4db76413575077a6aec32f8609d4e1ba8dd29172279998badf. 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/UKZJ72300604.