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 0x4140714dc57d9deb1a40bd07808bed235252f2f1a3a07c6c07f562e101d5346f. Chain 2 (Bitcoin): anchored in block 953630 (2026-06-14T12:06:27Z). Bridge: the canonical record inside this Bitcoin proof contains the same CopyrightID. Verify: download https://artists.proofprofile.net/proofs/artist/309d43c7-420f-4fde-b804-1d543e599def.json and https://artists.proofprofile.net/proofs/artist/309d43c7-420f-4fde-b804-1d543e599def.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 0xf7d822e8f525be7d4fabc9dfef5d32c6c2915efb65196d61ab30a79345176898. Chain 2 (Bitcoin): anchored in block 956312 (2026-07-02T05:09:12Z), 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/FRIDO2010495.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xba90235a9284f8e6874ca016b3987536a1b45a3f5f6ad6fd7aaf2922bd8d0ee8. 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/FRIDO2010496.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x0059c8f532f95d0aefdaed3e8925ebeb659564e12a9d95ffc212c10b38fb3261. 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/FRIDO2010497.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xc830b940fd3d519d00932a9cc8fe45ec02d97065109b6656c7e1a18241fe83b9. Chain 2 (Bitcoin): anchored in block 953528 (2026-06-13T15:41:10Z), 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/FRIDO2010498.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x69337c33e0fddc14aa5da21d090c32431b799f8a4c5313d011ffa5f0774e1a1b. 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/FR4Y92000006.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xd957507f92211c8c75bb18da26225009408e1765edb20fc3532d3752e44d2ba7. 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/FR4Y92000007.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x63c3272aa1f650ce281ddf58c753a8a2af53e1927051a819f4abe7b5f4dd5bea. Chain 2 (Bitcoin): anchored in block 956312 (2026-07-02T05:09:12Z), 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/FRIDO2010500.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x71aa25e2d115244657d39c091222c7f2a30f6448bd29e065874301d81e523440. 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/FRIDO2010501.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xab204eb9904bdbb51cd54176aa4b250f1484abbe8cdf5ac06a3ee8c0e5ac3d33. Chain 2 (Bitcoin): anchored in block 957820 (2026-07-13T07:54:01Z), 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/FRIDO2010502.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x3e78c3e8a10da12b7721e522b78bc155faa58b68d45dfa4dcb8ea2a23fb02bd1. 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/FRIDO2010503.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x69ed92ff63044be1e92ad06a2900a425d7968ac0b8bc9c2c17fbaf883b328240. Chain 2 (Bitcoin): anchored in block 956312 (2026-07-02T05:09:12Z), 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/FRIDO2010439.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xd8c26310fb0e750909c91adec9953dcd998fb1c0fb82aa0691a66895d9db91d3. 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/FR4Y92000008.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xd72bbcfb8ca1dceb2d08d26731a36366e048a8994be578dd6e702f09092fea5e. 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/FRIDO2010505.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x920a4ea23461c9288011bc7b308ffdb9514784f7ae70699a8464eab8dcbd585c. Chain 2 (Bitcoin): anchored in block 956312 (2026-07-02T05:09:12Z), 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/FRIDO2010506.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x9765429b17192a60298193da7671468a034f510d19c01baf6bba7f928a897984. Chain 2 (Bitcoin): anchored in block 953520 (2026-06-13T13:32:09Z), 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/FRIDO2010507.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x89edfdae3851f9736417d820242cce46c970bfd9f418322d08e64ec068200fca. 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/FRIDO2010509.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x36e8a7cd9d1d53718475eca9a272dba44331b79d687b6fc7750e40abb194850f. Chain 2 (Bitcoin): anchored in block 956312 (2026-07-02T05:09:12Z), 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/FRIDO2010510.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xe85b6ed98ed95c4ae77635af15f188f93d7cc1d2dd949e67be9e9cdfe85b1465. 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/FRIDO2010511.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xacd8c11bbbdfa5cf3c2a831437414c1e8d5eb3947c2ace3fcd4b0ee170120ab4. Chain 2 (Bitcoin): anchored in block 959144 (2026-07-22T15:38:35Z), 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/FR4Y92000011.
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 Note: an OTS proof may carry multiple Bitcoin attestations; OTSBitcoinBlock is the earliest confirmed one — a later attestation inside the proof corroborates it and is not a mismatch
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x88a4883b6e05a5443db6efdc8474773a80e589bad606bdcdd32492dd2576ed51. Chain 2 (Bitcoin): anchored in block 959152 (2026-07-22T19:01:55Z), 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/FRIDO2010508.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x498b471f9477d1112c2e9455ff17ed93ee4d874d9dafa95ba544493cb6d6d699. Chain 2 (Bitcoin): anchored in block 960240 (2026-07-30T09:57:33Z), 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/FRIDO2010448.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x348fcf248116aad0b1c1ba032c473f1949b7e011ca141b712b4a30bcb3fccee1. Chain 2 (Bitcoin): anchored in block 960105 (2026-07-29T12:35:17Z), 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/FR4Y92000009.