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 0x36182bf0ffcaa66eccdd73c1b1996df62533b4869390913a6f301187caaae036. Chain 2 (Bitcoin): anchored in block 954014 (2026-06-16T22:46:20Z). Bridge: the canonical record inside this Bitcoin proof contains the same CopyrightID. Verify: download https://artists.proofprofile.net/proofs/artist/3457b03e-8fe3-4400-a761-31be76d90784.json and https://artists.proofprofile.net/proofs/artist/3457b03e-8fe3-4400-a761-31be76d90784.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 0xa6b67db08376df846980d38cc68f5d9709bd6b4e16b01b2b2da9c2cc838988fa. 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/QM4TX1742476.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x2b998e709231694f06fbd2c59d07cb20cbdda55236c491a1862b9c071ea7349d. Chain 2 (Bitcoin): anchored in block 957052 (2026-07-07T14:50:41Z), 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/QM4TX1742477.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x35cc59a1e9b7d131e1a956d821cccbd55dc07cf3d9d54f9cce20d9ebe38eb531. Chain 2 (Bitcoin): anchored in block 957122 (2026-07-08T03:39:04Z), 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/QM4TX1742479.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xebed824d750f0898e7e85552b7d78575cbdd568a943efd9c0e9e42436fec4996. Chain 2 (Bitcoin): anchored in block 957145 (2026-07-08T08:56:20Z), 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/QM4TX1742480.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x51c19b8251beeef63ca01f2abde85758a5429a014c7873ca9c421361da5ca7ed. Chain 2 (Bitcoin): anchored in block 957122 (2026-07-08T03:39:04Z), 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/GRCS11400004.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xab23952c5b3649e4b30ba2b6ed08e6b19a72c5666003ec9e19cb10647aff4abe. 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/GRCS11400006.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xe395098ea4ed8cd4abdfba370cc419cb5da6960967965874e20f5a484fa908db. 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/GRCS11400007.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x6b45c772805c01b7a1a0e609a4e9167797519a07ee731bfce6fc8ca61e63df17. 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/GRCS11400008.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x3cdaee6caf19e51a552477013af4ceba8aa5bf45f9fd373db7eae16e32b72ebd. 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/GRCS11400009.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x61fe0311d839e7b087124f7936935eae6da250d8a9baf4f9f51e40b9e09a9c34. 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/GRCS11400012.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xa07b2714cf76dfd7bd51bc3a768a1f5d01ebb630513082b46b1263aa270a027b. Chain 2 (Bitcoin): anchored in block 956302 (2026-07-02T03:30:09Z), 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/QM6MZ1955080.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x0b468fe506b455985d8ab3ea7156598057134651808d194c1f9a249a45f4be38. 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/QM6MZ1955082.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x27a5b655ae6bd2df6fe2b050256702e1a678911ad05a55710beb99b06c411aec. 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/QM6MZ1955083.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xc9d29344d3b8f795b69f7240bde6123326873114a3e4b35f33abfe69e8340e36. Chain 2 (Bitcoin): anchored in block 957145 (2026-07-08T08:56:20Z), 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/QM6MZ1955084.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x789a2d9f1796ac5d4a6626f61ccbd97a61a93f8a3f13f036d8f4a60e2b5dfe30. 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/QM6MZ1955085.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x774c759ee1cc04becd23e742d6534454df16321be24ee281ca588b04c4e9750e. 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/QM6MZ1955086.