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 0xbeb484687ecc66932997e790b7952104f5713f6511942950a00a29a7961b6b6f. 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/66c20827-dd09-452b-b507-c1797549b213.json and https://artists.proofprofile.net/proofs/artist/66c20827-dd09-452b-b507-c1797549b213.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 0x94855aef34c7cbad6a406e93bb3f7a0eea92319e18b95678306b3e2060cd7e95. 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/SE6XW2336196.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x3a35c59e6596e963272263d4a7251083c54c360717c13ad30a12ffee8da351fa. Chain 2 (Bitcoin): anchored in block 957647 (2026-07-12T03:57:41Z), 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/SE6TI2393789.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x94199fe5432a510bbfe9b9a8a615fd262556743c49770f72048f35090cce404f. Chain 2 (Bitcoin): anchored in block 958943 (2026-07-21T00:27:37Z), 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/SE6QE2384384.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x475edf0481001bcd204e3a2dc27c4fe5882fc3cd35785144ed5b347e09a35533. 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/SE5752459272.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x9336b076c586299d6b0eb653c488cbddc269d152fc0e1af4c267e0156060c868. 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/SE5752459265.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xd1eb7b26b1df1838c3bd6a7200c7ddc08effc8a49fefb89669eff4fb8864640d. Chain 2 (Bitcoin): anchored in block 958880 (2026-07-20T15:23:42Z), 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/SE5752459266.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x6d24dc4abbad1ec047b1093736592da95f3fed72aeab479325bea5700d9e9c7d. 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/SE5752474888.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x6489a815415b74238260f7d5c9feb7bf052310db8d94caa2ae0ea9fbf61dbe62. Chain 2 (Bitcoin): anchored in block 958600 (2026-07-18T19:24:05Z), 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/SE5752474889.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xa27931f82c5bd81b977034b47d1b37022ca8d5b3eb50a9610ac7609c765faf5a. 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/SE6SA2490263.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x2fc0b75cf0043cd32d15a1274d05c5821767947af083a784f95a8dc6cd5eb217. Chain 2 (Bitcoin): anchored in block 958111 (2026-07-15T06:58:20Z), 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/SE6XX2537947.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xd4eaece4582e18c1e09a94dcd8ad0fb702f326a31bee94878eccbcc3c0fb163b. 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/SE6I32538258.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xecb12ac7ead342b1aa5c1af84fb2f0e074e4f5a19ead7b3bdfd85657b37a1bdc. Chain 2 (Bitcoin): anchored in block 957120 (2026-07-08T03:22:41Z), 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/DGA062403555.