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 0x96acfadcec833da5627b203e5cfba87c1539515da1db588e5450d3b86f93473b. Chain 2 (Bitcoin): anchored in block 953713 (2026-06-15T00:33:41Z). Bridge: the canonical record inside this Bitcoin proof contains the same CopyrightID. Verify: download https://artists.proofprofile.net/proofs/artist/7e969541-43ff-4331-afcf-3e868e650e22.json and https://artists.proofprofile.net/proofs/artist/7e969541-43ff-4331-afcf-3e868e650e22.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 0x63f0d1c4d7999ee4f66f48937609d408a10f03033ae4158daefd8dfecd68a601. 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/GX3Q92406078.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xfbc879a21edbcd93297be100af0352ba4e8656f83c31b08042371d2cbcad992a. Chain 2 (Bitcoin): anchored in block 958430 (2026-07-17T15:33:28Z), 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/GX3Q92406079.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x5aaad541d6b085c267291f8af981d3e6a96be2c1506ca58b62d5c5a6b1d3b596. Chain 2 (Bitcoin): anchored in block 958977 (2026-07-21T08:24:43Z), 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/GX3Q92406080.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xd3a75bb6c97d0d11542cf914954e8f38f4c8769d14c9e276045b44ca289cf8bb. Chain 2 (Bitcoin): anchored in block 956620 (2026-07-04T07:11:13Z), 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/GX3Q92406081.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x3e42da54532178e1ae9ebdf17d7fa83b6d63efe2d286b3016b4e6dac4c354033. 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/GX3Q92406082.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x8a83f1212b922c4cfd2d0f63e081cfb1c523b73a95c52eb78aa1ebeebeca4fbb. Chain 2 (Bitcoin): anchored in block 956742 (2026-07-19T22:38:53Z), 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/GX3Q92406083.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x84b1c3bd457665d969d63c5744e8bed4577f85dd9ee04d77a13ba148a07d7e4b. Chain 2 (Bitcoin): anchored in block 958331 (2026-07-17T00:17:30Z), 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/GX3Q92406084.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xb6311d87d52c161164dd5790d888a4c984749d401d489b20388b18ad9f678378. Chain 2 (Bitcoin): anchored in block 958276 (2026-07-16T13:07:49Z), 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/GX3Q92406086.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xe0f3a54bf312fe6403a6cc41266a43faa89e77e0a8b9ed02414656892b5e1d2e. 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/GX3Q92406087.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x340961f62ddbcd91980d8e6767fb9284b85ecd44934ad4f4f2121af0a60ffeb1. 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/GX3Q92406088.