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 0xeecee286b55a03f507432bf101648d7fd476d12e9ac168cfd7c2c6de8445f758. Chain 2 (Bitcoin): anchored in block 953423 (2026-06-12T21:20:00Z). Bridge: the canonical record inside this Bitcoin proof contains the same CopyrightID. Verify: download https://artists.proofprofile.net/proofs/artist/bfbd8f3f-8bd0-41fc-8e55-418196fe1116.json and https://artists.proofprofile.net/proofs/artist/bfbd8f3f-8bd0-41fc-8e55-418196fe1116.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 0xbc587205491b1bce94992fb6378c2b3bd65e1f8b8f80995c6033b1419b8af63d. 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/DKAZA2300253.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xdb6c3c3c4cf9a63f1b5f26b8597031f1be2cf31c2854528ff10278af8b4dc19d. Chain 2 (Bitcoin): anchored in block 953536 (2026-06-13T17:25:41Z), 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/DKAZA2200359.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x31db4081148840b0b45d5046bea02390adc40598a83bc7414eda634d10bf7d2f. Chain 2 (Bitcoin): anchored in block 953536 (2026-06-13T17:25:41Z), 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/QM6N22136993.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x5a85d94a25c5187bb56f41fd7d0a9a162708e84c13aaae7aa345eaef04c8e493. 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/QM4TW2180552.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x6da6ece4ba30dcc4d859b184c92fc3775360b40c68a88bf6beafd617ff436bf4. 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/DKAZA2300255.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xfe6b565b80197d12793a7d90dea9957445efd4757f0496bd842ea0411791058a. Chain 2 (Bitcoin): anchored in block 953536 (2026-06-13T17:25:41Z), 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/DKAZA2300098.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x35330fa619f011a8c3d69ac36772b6e3bc18ad5e3a1e13d2c826a2c0157e646a. 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/DKAZA2100253.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x9f4c7953335ff40804621182775baf6e2fad8f46e08fdb5e992afd23f6f9678c. 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/DKAZA2300256.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x6cd93d914aa21c5790577d77497918a2f2f74dbb55a2c82444b6a0e358b35106. Chain 2 (Bitcoin): anchored in block 953536 (2026-06-13T17:25:41Z), 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/DKAZA2200222.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xcb9cfd0c875cd87dc2531fac92fd5ab76e78c56f9224204a3c02c8302b90d9ce. 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/DKAZA2300257.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x3cb458fcc798f11a64eaf1fc35fdb4e6717ea1676b7e4120296db10b8a1d21fe. Chain 2 (Bitcoin): anchored in block 953536 (2026-06-13T17:25:41Z), 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/DKAZA2200194.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x289ff54228b3590d12e953b1094fcc9fa4d80ab375d405741d1005bd900bbdb5. 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/DKAZA2300259.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x494fc907ab03d0da094bc47111eee6a2f86fddd8a2bd3d154cf6583a8fa83366. 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/DKAZA2100266.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x7de09fe4aa46c26c82a8132fb4277abce4087bce7552a135f23cd4b5aaa9b011. 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/QM6P42028831.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xe8a521ef1472ca48f6f7d194433f15b8751a583df35d933cdcaea3ffbc0e8c73. 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/QM6N21976509.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x6e2792039693ea00549017aa523951fc502c73a8808bf7724f4c9dfeb4e074d8. 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/QMFME1983317.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xecebad52f06bae267b6b84f7193206f934daed6c4f218fac669187820264e91e. 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/QM6P42020305.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x6ce3f30909241e5c02a295afc5a103494158e97e5a8cc2fd9f6268d2a78ddf37. Chain 2 (Bitcoin): anchored in block 953536 (2026-06-13T17:25:41Z), 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/QM6MZ2088382.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x560402fa50d1daf6016be2f91b3f4c08afd415282b46cadc9a447f7bacaac68d. 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/QM6MZ1937988.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x98c08d9ee7735c9741f5ac864ee30922c72437aec584b6974fd8dd49f2b17a9e. 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/QM6N21976513.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x2c1a5fab7af6c854f268d67c94a453787cbbcb4c5a744e71478f6ce53d279119. 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/QMBZ91907143.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xfe6b565b80197d12793a7d90dea9957445efd4757f0496bd842ea0411791058a. 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/DKAZA2300098.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xdb6c3c3c4cf9a63f1b5f26b8597031f1be2cf31c2854528ff10278af8b4dc19d. 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/DKAZA2200359.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x3cb458fcc798f11a64eaf1fc35fdb4e6717ea1676b7e4120296db10b8a1d21fe. 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/DKAZA2200194.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x7d0a89e789c1f18241241ac43141e18a42dfdd93b824b203948df4620116dde8. 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/DKAZA2200004.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x35330fa619f011a8c3d69ac36772b6e3bc18ad5e3a1e13d2c826a2c0157e646a. 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/DKAZA2100253.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xb3255667fd979b38ca9eac8e9e3f7be55542202b7cfdaf9a48fff7dd335c4d78. 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/DKAZA2200079.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xb3255667fd979b38ca9eac8e9e3f7be55542202b7cfdaf9a48fff7dd335c4d78. 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/DKAZA2200079.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x7d0a89e789c1f18241241ac43141e18a42dfdd93b824b203948df4620116dde8. 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/DKAZA2200004.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x35330fa619f011a8c3d69ac36772b6e3bc18ad5e3a1e13d2c826a2c0157e646a. Chain 2 (Bitcoin): anchored in block 953536 (2026-06-13T17:25:41Z), 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/DKAZA2100253.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x31db4081148840b0b45d5046bea02390adc40598a83bc7414eda634d10bf7d2f. 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/QM6N22136993.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x5a85d94a25c5187bb56f41fd7d0a9a162708e84c13aaae7aa345eaef04c8e493. Chain 2 (Bitcoin): anchored in block 953536 (2026-06-13T17:25:41Z), 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/QM4TW2180552.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x6082f1e806ea88c0a1447f38d91b3291d60eb28197f40d680348df0f92e8968b. 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/QMFMF2013651.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x848ba983f5bf41a4ac605be704953a9254c50edbd834a5c7a35f80486cd939ad. 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/DKUM71700250.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x7ce30275ced77eb836468f0e9e78de8c6a38324d97e1b2680a6a6b7f47569add. 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/DKUM71700218.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xf5ccb6d57451d15ac71c8162e932c3b0244b1991819e56713098120b4eede059. 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/DKUM71700001.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x08cc1e2ad5a3be6d488d429b46eeb3edcb76bc7f038b9116bfdc6cd630836552. 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/DKUM71600287.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xae4618a4f98328d524ce920032479fa82ce0277b9105540e4752ef87200cdfb0. 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/DK7Z32400105.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x4115c3db35f22e733c7283ceab9eef6374290cfa13b98dee2fb694e57a0de3a5. 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/DK7Z32400103.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xe2b1972692171fdd4f9eec299be236d0b88b27c374b453e647a1c35a6f6694e7. Chain 2 (Bitcoin): anchored in block 953536 (2026-06-13T17:25:41Z), 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/DK7Z32400101.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x591dc6b9a2b2dadb98f72aae578942073bfb052b536a4f9b6ad5f56600d706bd. Chain 2 (Bitcoin): anchored in block 953536 (2026-06-13T17:25:41Z), 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/DKK4P2400101.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x494fc907ab03d0da094bc47111eee6a2f86fddd8a2bd3d154cf6583a8fa83366. 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/DKAZA2100266.