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 0x6b5e99e4dfe1df8fe7295d7b84e34182593363ed2da3ff2be8a88027caa9e5a9. 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/d430dbe8-188d-4aec-9c37-fa34a8417533.json and https://artists.proofprofile.net/proofs/artist/d430dbe8-188d-4aec-9c37-fa34a8417533.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 0x86d03f1429b80e3957039f777b7dc5498f6e9e07e17fd102031a171865a9976b. Chain 2 (Bitcoin): anchored in block 958163 (2026-07-15T16:18:43Z), 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/MYKS18900001.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xd3413839fef7e1ade5a237028eb01fb1d7586fae42d177c64df3f258289b5f90. Chain 2 (Bitcoin): anchored in block 957688 (2026-07-12T09:52:21Z), 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/MYKS18900006.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xb9f2388e2a65baec87605a3400b00dc6da7114c85dcd949acd8c53370ca0ceae. 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/MYKS18900008.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x850739505f60ebc5e6dbb6beb22281252baa94195ef491746f26d3d88fce1a1b. Chain 2 (Bitcoin): anchored in block 957702 (2026-07-12T12:25:41Z), 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/MYKS19500033.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xdcc5a0c950bbb4dfa2657bd44133f1d8cbdec634ed563643b78c345453eab9e7. Chain 2 (Bitcoin): anchored in block 958705 (2026-07-19T08:43:25Z), 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/MYKS19500037.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x53570594519fb5a7f6d76e79d3ed2e83f9859fbeb70ff8a10a388a1d93813e5e. Chain 2 (Bitcoin): anchored in block 956484 (2026-07-03T10:47:44Z), 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/MYKS10200001.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x2f4ab1df96cf3e1d5e934843aaf417996147c06c63b8ec028bd1dd07b9a55957. Chain 2 (Bitcoin): anchored in block 958601 (2026-07-18T19:27:02Z), 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/MYKS10200006.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x06c6e4e07cb42f85f3777979a8cc667aea6e36ed9f490db0ddb286fb6a673643. Chain 2 (Bitcoin): anchored in block 958805 (2026-07-20T02:22:58Z), 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/MYKS10000162.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x24eac9c4162715467bb1dded767f21b7a7398857465c8f02a4ebf050b2952b07. Chain 2 (Bitcoin): anchored in block 958246 (2026-07-16T08:38:34Z), 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/MYKS10700021.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xd5388d1b12b1cc1a3fd4c86555079008793c155a2866beef055bca2a93671892. 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/MYKS10700017.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x4b3aaafc9554925e85e06075f6ac45fd94592defe07412849e507e7ee3ca803d. Chain 2 (Bitcoin): anchored in block 958251 (2026-07-16T06:29:25Z), 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/MYKS10800008.