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 0x4519cc6f2bb65ca7524640d93896ff93e9308243f8a779240c18bc6adb44ae77. 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/6ef80872-3b0f-42db-af55-100dd09caa45.json and https://artists.proofprofile.net/proofs/artist/6ef80872-3b0f-42db-af55-100dd09caa45.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 0x8168b88bfab0790e64daa7e2ecec11e2ae99724eb843f03345e1135978c2b464. 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/JPJ491700030.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xf3406343e3d61f6a3ad4b018ab8db956c7c749b91fed9ed14c73a2accf8b3ac6. Chain 2 (Bitcoin): anchored in block 958447 (2026-07-17T19:47:19Z), 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/JPJ491700031.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x75f488b8ee5041ea8866984ca9ea5c4dd770261d6f3c3781356079125dfb4485. 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/JPJ491700032.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xee478cff0b34704267aea5d510a1ad33bdbc46853c71e075701f1baf587c75ab. Chain 2 (Bitcoin): anchored in block 958462 (2026-07-17T23:17:53Z), 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/JPJ491700033.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xfe914d120071b55039d2fabf41612bf16d334b2ac85b0fdff0c55f94ba5e49ec. 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/JPJ491800008.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xafbf5fe8de31b91d27cec9ecc50779d317244484fc8bf67fc6dcf134e6caf4ac. Chain 2 (Bitcoin): anchored in block 958716 (2026-07-19T10:15:55Z), 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/JPJ491900111.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x504c62d96a4881ca2137420b94b5b944e3fef1293b109779f719d0408318e947. Chain 2 (Bitcoin): anchored in block 958216 (2026-07-16T00:00:34Z), 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/JPJ491900110.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x3232c67d66473f07f0ee4429d920105c6a92449434954dfa0df73aee281eb310. Chain 2 (Bitcoin): anchored in block 956404 (2026-07-17T03:49:23Z), 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/JPJ491900112.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x8d3237a2db43099e337268665c1c5bccab22accfbff6caaa3aa777dda82d028c. Chain 2 (Bitcoin): anchored in block 958137 (2026-07-15T11:48:21Z), 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/JPJ491900113.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x072282208579dc2d0ee2561eb6b6fa73b13b101d609070c43b87692b47af6ad5. 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/JPJ492000030.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xa74baabdc378552227fff587471833c64d476f664cf07f9d22878b83e9ff31e6. Chain 2 (Bitcoin): anchored in block 958340 (2026-07-17T03:30:53Z), 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/JPJ492000080.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x769ef92861d090b1e30dd51df2c87ec804e0ed16e56d8d54654ec0bab00fff12. Chain 2 (Bitcoin): anchored in block 958783 (2026-07-19T21:20:45Z), 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/JPJ492100227.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x721a4d39674c6e534da25cfa50fc9970a05515eab6efc1510d3dda5b80fd14cb. Chain 2 (Bitcoin): anchored in block 957745 (2026-07-12T19:20:20Z), 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/JPJ492100230.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x3ee376d654b8d98cfa8f4ba920c2600931cffde39d8c4a5c3d49eaaf72ecd904. Chain 2 (Bitcoin): anchored in block 958798 (2026-07-20T02:43:40Z), 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/JPJ492400027.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x5172d3a273c3adbdf2223709e13f0d916a8e09cbbf0dc60ebe4069cfe77d14f2. Chain 2 (Bitcoin): anchored in block 958316 (2026-07-16T19:42:29Z), 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/JPJ492400031.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xe145c8c3990b62cfd2525234dc46f3e2038bb848f84538bc50c8dec442a41863. Chain 2 (Bitcoin): anchored in block 958867 (2026-07-20T13:51:09Z), 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/JPJ492500061.