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 0x9b2d77eb0b2ef8532967e315fde4d38ab55e04024c136fe28010a5128013daa9. Chain 2 (Bitcoin): anchored in block 953786 (2026-06-15T12:56:12Z). Bridge: the canonical record inside this Bitcoin proof contains the same CopyrightID. Verify: download https://artists.proofprofile.net/proofs/artist/dafba953-c458-441b-9da3-e253efe72c7f.json and https://artists.proofprofile.net/proofs/artist/dafba953-c458-441b-9da3-e253efe72c7f.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 0xa0f70e6dedecab4dc5c1f75def55d1ab0e15bceeae52b22d14372f7a18c8fab3. Chain 2 (Bitcoin): anchored in block 956656 (2026-07-04T14:03:39Z), 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/KRB921930879.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x4b8f02690249d5db95c64f64fae66df465ea7e073982c9ccb3411b48c17be68d. Chain 2 (Bitcoin): anchored in block 958489 (2026-07-18T04:13:26Z), 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/KRB921930880.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x43e7013f27278e4f24af08829e277cec15d36e53c2a8ee0af9e95f737b8a3f13. Chain 2 (Bitcoin): anchored in block 956656 (2026-07-04T14:03:39Z), 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/KRB921930881.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x2c96bc745eeecbfdf1aba6cd89fc7f4651cc0eb8ac255e6291cabbbea718fa3b. Chain 2 (Bitcoin): anchored in block 958857 (2026-07-20T09:45:25Z), 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/KRB921930882.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xdfe6307556dfdd41eb9527d0197dfbb4c45afae8db0b316b281bc43e7e41a5e7. 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/KRB921930883.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x30824855aee820362bbf102170154dde6002afdd85b0c2ac81e2a9643be1b07b. Chain 2 (Bitcoin): anchored in block 958455 (2026-07-17T21:28:36Z), 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/KRB921930884.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xbe1f901d7bb8d53548d08ed40a67100c31f7824aa074c914098fe31e3f6c24b7. Chain 2 (Bitcoin): anchored in block 958508 (2026-07-18T06:27:01Z), 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/KRB921930885.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x9eb5a4e4e38abb12c39712acb9f8b98e4f7d5ec707a1a36058402a0307251dde. 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/KRB921930886.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x9aedd99b0dff0d4e1cca5b1243098ef06852f14e790831370c24eb58608b6462. 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/KRB921930887.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x05b7aa8148c0842dc3016758a52d72004df5359c90b2acad6aa21b82c549f4dc. 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/KRB921930888.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xc6f64cedf37aea9452b9e04c84fa14504a3919300ada0dd00dbb84585ba24b95. 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/KRB921930889.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xfad3abd91b3cda7d786d3b1dcea5642a5fc7ddf9b16f45bba89a52e66f784b5d. Chain 2 (Bitcoin): anchored in block 958371 (2026-07-17T05:45:43Z), 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/KRB921930890.