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 0x9716b60effa39ab101f9790a94919a3de023ea283c357e3f13f20dace8782cd4. 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/baf1b90b-ec16-419e-83e5-7b54d747c3fd.json and https://artists.proofprofile.net/proofs/artist/baf1b90b-ec16-419e-83e5-7b54d747c3fd.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 0x15dc996f400ff5153a0d9d4f40e801590600ffa90c443882b6ae6c8978d7c20e. 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/PLUM72100076.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x1148d72b371e7204d0aaca441da93547693521b463d078a6359429b7b1a8fcba. 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/PLUM72100371.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x1ef8cf24aba64fa72da89a8a5fc98014bab62f7372b6a30b70d9c3363fa666ea. 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/PLUM72100452.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x69808b59b1e9dd2d1a7726237ca28021182fe352a5de68bceb016886fbd1395e. 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/PLB382300155.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x69808b59b1e9dd2d1a7726237ca28021182fe352a5de68bceb016886fbd1395e. 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/PLB382300155.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xf8199be7cae6b54be2534fc0c4930afe4144b55d5d8b4cdb6cadb57bdc08db70. Chain 2 (Bitcoin): anchored in block 958212 (2026-07-15T23:25:50Z), 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/PLB382400094.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x1b3d7d4d8557b49f30af58d109eddb2ed3a1d2205f62852462ee264730cf0c45. Chain 2 (Bitcoin): anchored in block 958350 (2026-07-17T02:31:22Z), 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/PLB382300188.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xf45700cec1004a41af18ac304b80c3d3c22f57eabcb2010c6639da82b55efce1. Chain 2 (Bitcoin): anchored in block 958211 (2026-07-15T23:24:33Z), 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/PLB382300618.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x43a9a57c0428ed82502b3263c7773c61c9c24af1c6b40f53b4d5c7e0bca1bb3d. 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/PLB382400095.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x5bb045852d0cfbcec71e6b7397cd60dcd1e5c61cc962e9a73b3d0aef265c03fd. Chain 2 (Bitcoin): anchored in block 958889 (2026-07-20T16:04:08Z), 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/PLB382300411.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xea4d4802870805339513b8da97c0c3d7373e484ccb4128cb82fdbabf22b9cf25. 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/PLB382300267.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xf26a94e102b4031dc890dd62a6cb7b9168750f2deafcf777e394299b7f584468. 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/PLB382400780.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xdf9cef796a8417c727b22c8be96c9de289e7964f61d13b58176ce6fece57d781. 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/PLB382400801.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xf26a94e102b4031dc890dd62a6cb7b9168750f2deafcf777e394299b7f584468. Chain 2 (Bitcoin): anchored in block 957061 (2026-07-21T21:31:20Z), 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/PLB382400780.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xb0413b5e4d66a0ec4d834bff18229e68c83db47b4da52d8c54487e2917b64ee5. 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/PLB382400815.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xdf9cef796a8417c727b22c8be96c9de289e7964f61d13b58176ce6fece57d781. 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/PLB382400801.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xf26a94e102b4031dc890dd62a6cb7b9168750f2deafcf777e394299b7f584468. 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/PLB382400780.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x92db031ebc6e12206f21d2adbfbefa263b877871c1859ab0920d8d580a453ce9. 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/PLB382400904.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xb0413b5e4d66a0ec4d834bff18229e68c83db47b4da52d8c54487e2917b64ee5. 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/PLB382400815.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xf26a94e102b4031dc890dd62a6cb7b9168750f2deafcf777e394299b7f584468. 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/PLB382400780.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x6fda22644501c5e9fcc4c316d508524a4166cd650153513f8973ec9acdd0f491. 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/PL86E2200001.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xbe293387a715ac6f29dc49dcd6479e5bd7f140c33ba2e2386ba14400358e4d05. 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/PLI292000203.