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 0x5b3a352ecca11892fec6241a73382b7223bd6f1fccc1ba8cfae6f033681a3272. Chain 2 (Bitcoin): anchored in block 954066 (2026-06-17T08:11:48Z). Bridge: the canonical record inside this Bitcoin proof contains the same CopyrightID. Verify: download https://artists.proofprofile.net/proofs/artist/6bf35dd4-f44b-4d41-aa48-67953c8ed39b.json and https://artists.proofprofile.net/proofs/artist/6bf35dd4-f44b-4d41-aa48-67953c8ed39b.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 0x2b9ee61460f4db7e8c0e188441b6ade3b0048def819a5108f33b9fc8e34be5ee. Chain 2 (Bitcoin): anchored in block 956304 (2026-07-02T03:55:08Z), 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/QMDA61374360.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xd32308bf09f90592ed5d2d8246f01a0dc58751fcbb9fc4b5da1ab97443833a94. Chain 2 (Bitcoin): anchored in block 956304 (2026-07-02T03:55:08Z), 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/QMDA61374361.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xd8b1c1cb8e148caa68c75010e4b880faa0f0e5ae7f92160a3bc3860286c52564. Chain 2 (Bitcoin): anchored in block 957124 (2026-07-08T03:53:27Z), 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/QMDA71327408.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x63721a74ff3005a9b01d869933d76151a0c5e04aac00e9f0668b964c6e7d3690. 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/QMDA61374315.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xae63f4144cd4e9d5cd0697aa1a36489c8dfa469c8c8147b32bbd4f05f76ecbcd. Chain 2 (Bitcoin): anchored in block 956304 (2026-07-02T03:55:08Z), 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/QMDA61374358.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xd32308bf09f90592ed5d2d8246f01a0dc58751fcbb9fc4b5da1ab97443833a94. Chain 2 (Bitcoin): anchored in block 957124 (2026-07-08T03:53:27Z), 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/QMDA61374361.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xa4cf3d422589157d709250e04769d5e4dc9134422e65efdfa6c219b15defb078. Chain 2 (Bitcoin): anchored in block 957118 (2026-07-08T03:20:19Z), 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/QMDA61374313.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xff0f0015e032c0dd97d21e6e0e7dea948a92e772d1d02cb1d74e67becb49f6f9. Chain 2 (Bitcoin): anchored in block 957118 (2026-07-08T03:20:19Z), 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/QMDA61374362.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x378ddff8372da5e0b3e056d634c0808645a3d9a5734a6e40915a1b8c01ed7bdd. Chain 2 (Bitcoin): anchored in block 957124 (2026-07-08T03:53:27Z), 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/QMDA61374312.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xcc75fb679a82f6cae54ba05f5e38783a01d6fb10921fb96e68035103889a30b4. 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/QMDA61374327.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x46b37efb4404e90ea4ca5b3b3e77857cee3cd3392d37f5f31fd773a193dd4b1f. Chain 2 (Bitcoin): anchored in block 956349 (2026-07-02T11:34:59Z), 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/QMDA61374455.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x834d364dc44a9a589e1aba8fe7fc638a96a0c28e77b3a249727c87875d95e9d2. Chain 2 (Bitcoin): anchored in block 956304 (2026-07-02T03:55:08Z), 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/QMDA61374456.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xcc75fb679a82f6cae54ba05f5e38783a01d6fb10921fb96e68035103889a30b4. Chain 2 (Bitcoin): anchored in block 956351 (2026-07-02T11:38:34Z), 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/QMDA61374327.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xc1429667cca48e3f1d358369c43a91d084bdcee09258825e25b79f43beb7f5ab. 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/QMDA61374328.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xe1f4b131529d66ae926be6fc6874462689489619eb9db6a9f1140372603d3fd6. Chain 2 (Bitcoin): anchored in block 957124 (2026-07-08T03:53:27Z), 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/QMDA61374311.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xa3661ba4521d7a87bc5e5d2339bbe1cc9701009500bde39856c0786769c466a6. 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/GBRKQ2139462.