1. Compute SHA-256 of OTSCanonicalRecord value → must equal OTSHash 2. Open OTSProofURL → extract Bitcoin block number → must equal OTSBitcoinBlock 3. GET OTSBitcoinBlockVerifyURL → block must exist at that height 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 0xae912741548f4e0069605617ded312b634e0ab5a50c57e6409294198dcca2504. Chain 2 (Bitcoin): anchored in block 953997 (2026-06-16T20:07:57Z). Bridge: the canonical record inside this Bitcoin proof contains the same CopyrightID. Verify: download https://artists.proofprofile.net/proofs/artist/2411de61-b85a-45d9-b66a-db776ab7fd59.json and https://artists.proofprofile.net/proofs/artist/2411de61-b85a-45d9-b66a-db776ab7fd59.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 → block OTSBitcoinBlock must exist at that height 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 0xfef18b242d4952b41cf6ebf747d6e90d5e3d456dfeaef2ec598f9338c685de83. Chain 2 (Bitcoin): anchored in block 956422 (2026-07-03T01:01:38Z), 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/QZTB92547350.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x36bddf2b18c0e4f1988c054810b73bb8ad51aa422f933c6098dec8ea894b859a. Chain 2 (Bitcoin): anchored in block 956560 (2026-07-03T23:28:02Z), 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/QZTB92547387.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x2d912af1527ba51a59ef2c0c8d53903410ae8210364e19071c3c7ec0d49e2fbe. Chain 2 (Bitcoin): anchored in block 958194 (2026-07-15T22:45:18Z), 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/QZTB92545897.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x34650b9ee7fe95c3305a5f355091acf3655bcc369561bcbcbbad470657cae2b1. Chain 2 (Bitcoin): anchored in block 956420 (2026-07-03T00:42:11Z), 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/QZTB92547400.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x66149b5a5e8d422f36a0dc0bcdeac32219209d5cfc67fac9cc64ba10f5b341a3. Chain 2 (Bitcoin): anchored in block 956545 (2026-07-03T19:59:51Z), 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/QZTB92571089.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xd8263d301fa84b53e6f35ccedb3f015003291f07958461daf314bc675780ba47. Chain 2 (Bitcoin): anchored in block 958106 (2026-07-15T05:35:13Z), 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/QZTB92572840.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x6f3cfb9c5d4f069dfdf08f77317dc026c2b8e51af90d27d1a40ebbb6e157dca9. Chain 2 (Bitcoin): anchored in block 958196 (2026-07-15T22:19:49Z), 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/QZTB92572771.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xb4bdf02af409054c17cd71d4770bd1bc7d42cf671df53d4b48ac22342bc46650. Chain 2 (Bitcoin): anchored in block 956420 (2026-07-03T00:42:11Z), 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/QZWFS2511046.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x6a092474c383348986bc5ec9c845d769f09ed147a7534fc4bdd804cb253b05ce. Chain 2 (Bitcoin): anchored in block 957788 (2026-07-13T02:37:37Z), 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/QZWFS2511057.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x8031d754b2799485904bd72eeb8c0b05a613d2732859ed81e650124133ce7caf. 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/QZWFU2551038.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x2a61154b8412dee47d2bdcca498010ecd600a5a15e0d0a0d8681a250a7401427. Chain 2 (Bitcoin): anchored in block 958197 (2026-07-15T23:27:15Z), 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/QT3FB2590779.