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 0xa0610eeb9eb64e3101d5eee0d7bb5c4459194e8e4fd24beba3d4a75c56103f09. Chain 2 (Bitcoin): anchored in block 953408 (2026-06-12T19:28:13Z). Bridge: the canonical record inside this Bitcoin proof contains the same CopyrightID. Verify: download https://artists.proofprofile.net/proofs/artist/082018cc-1d14-4991-b901-3443cd722ea1.json and https://artists.proofprofile.net/proofs/artist/082018cc-1d14-4991-b901-3443cd722ea1.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 0x19134377a339afcb932455979bc834971bbea9a03631b315a2eeee60543ae3e2. Chain 2 (Bitcoin): anchored in block 957805 (2026-07-13T04:34:37Z), 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/INS7A1631574.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x645a650bc811ff95e53effc5d1ba9c99c7883cdd14b1eee4403d5f6985cad726. Chain 2 (Bitcoin): anchored in block 957891 (2026-07-13T18:21:04Z), 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/INS7A1631575.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x461c57173ec8c6f179acf4c0d3e7ce9b3b65bf1b7a8c0f543c319854d16df566. 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/INS7A1631576.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xcb52a7c29edeae143afeaadc86a494d4a85fc2d1b22d7582e9fc77a1deb3928a. Chain 2 (Bitcoin): anchored in block 958765 (2026-07-19T20:10:44Z), 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/INU252203610.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x7955391715d404cd261cd9834340a23bc3138ca0cc5446522a907eee78ba2bef. Chain 2 (Bitcoin): anchored in block 956772 (2026-07-05T10:01:46Z), 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/FRX202269117.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xc5b2ed8059cfa3fbd4de921eb1486fd0f0e5e2a258d860858c7283ee1e24d95f. Chain 2 (Bitcoin): anchored in block 956725 (2026-07-05T01:12:41Z), 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/DGA092215912.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xb0c76c7e0e71583892f15a54b2bf21f6cc84a266958f651842874655ad836c89. Chain 2 (Bitcoin): anchored in block 956551 (2026-07-03T21:18:05Z), 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/DGA072345321.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xb062e409bcf56f03d54b0b786079bc547c41b29e26e941355444d970c8d45f5d. Chain 2 (Bitcoin): anchored in block 956857 (2026-07-06T01:26:17Z), 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/DGA062377518.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x3ec4047abe180950ae87e6d2cb4224201879c1e7d159bce949554fe22214848b. Chain 2 (Bitcoin): anchored in block 956822 (2026-07-05T18:48:28Z), 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/DGA062377528.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xf84683389c71670c900d9704d7ac9568153ecd5e3d7ea4ae2a8c4f224577aeaf. Chain 2 (Bitcoin): anchored in block 958324 (2026-07-17T00:12:04Z), 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/INN242319294.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xe0f9fcb0e7413fb2fc91e9a3f6d558ac8c4a7332c5d71840fa7e988f107f39c2. 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/GBWUL2486853.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x6f197d6c6c4eeba894d6e519ffcedc743b8dd9749680afa00b65f066752f8028. 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/TCAIY2487800.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x86990b68fbc3f732a98177dd9f2a3f607896cf6f2b4d39a94a03106c0d9e82af. Chain 2 (Bitcoin): anchored in block 958224 (2026-07-16T02:28:43Z), 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/INDF22402673.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x2ea500d84a90fe57ad8101df4754b0e1892172b036d275d97e8a9b6692ee313f. 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/INDF22402754.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xa73a450de6e64b87fa7c75e48b6f2ff7b4ed0cd864b38e1e1cb26363eedfdc5e. Chain 2 (Bitcoin): anchored in block 958383 (2026-07-17T08:20:01Z), 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/INDF22500103.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xa6a380e86300f5f824c14a155e26470ad2dfb64eae30bc79271daa7d1b8dd6a9. Chain 2 (Bitcoin): anchored in block 958430 (2026-07-17T15:33:28Z), 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/FR59R2515309.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xfb2d3ea1b0b9035ba16c60a36b7af60f7dc69b10a0a5cd81aa69674e8f1a2a03. Chain 2 (Bitcoin): anchored in block 956725 (2026-07-05T01:12:41Z), 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/FRX452507008.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x30acfa6da3d6cd09f7fb4f9ebc18f82692b7f92efc4376a626ad3f9e0a440c96. Chain 2 (Bitcoin): anchored in block 958316 (2026-07-17T03:03:23Z), 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/INDF22500554.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xa1c36aee25f680193100e2fd5d7bb89fd3fdec0e70c35dd29415628710dfcf89. Chain 2 (Bitcoin): anchored in block 956790 (2026-07-05T12:31:54Z), 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/QZZ432434497.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x6ecc0ac3fba5baf36d4c4ec8b4b5152115c9c296848ea0119c5011f4d59b4929. 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/QZZ432436072.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x40de510ba636d5765e52c545a9003207cdf3aee476a091fb76aa1b3eeb97c308. Chain 2 (Bitcoin): anchored in block 958802 (2026-07-20T01:04:02Z), 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/INDF22500676.