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 0x7bcb19e9c86e081a3a5b40e131cfc1d74931457531154bb00598dac9cc07ff7c. 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/be69576e-7fa7-4e6b-812c-aa383cb502ba.json and https://artists.proofprofile.net/proofs/artist/be69576e-7fa7-4e6b-812c-aa383cb502ba.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 0x1332d3797c1dc89be02280666273b9f108fa64b6ee78294f3d8226059a299f33. 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/DEZB52440133.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x2964d99e23078f3121599b985b014ebb60193ddadced9ea191cbc5d47227eb60. Chain 2 (Bitcoin): anchored in block 953513 (2026-06-13T12:47:07Z), 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/DEZB52440134.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xcf2492af2ba3093671a9cdb6c3df0b4d6ad5aedcddc595a00bce1512d7251721. 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/DEZB52440135.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xd2bd498fa30621cd94cdeb93c1fc001c9934c0c5b591aec69d842200b2cd9793. 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/DEZB52440136.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xe7e5360e71149ac38b365f57dbb50719e2ac5377abe9f9ca6e37e904d2d1ecde. Chain 2 (Bitcoin): anchored in block 953515 (2026-06-13T12:53:06Z), 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/DEZB52440070.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x7a21c1b75b3bed0ec5ef07fb52784d716859049cf6d7a846faaa93c6ed7a4799. Chain 2 (Bitcoin): anchored in block 953515 (2026-06-13T12:53:06Z), 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/DEZB52440071.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xab838d8e79ff067e7d469fa50b679c5f9f76840b8a808041f7a94b302f72f87c. 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/DEZB52440072.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xd29e61f09d570befab2c819ec65de8f629302bff63c52836b3b1c77f314b0d9f. 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/DEZB52440010.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xf5dfe3b4f3cd99239ce65dd2884f741358ffdc73aba811c4b83a2fa0d3e33f97. 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/DEZB52440011.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x65fc16a738f7966271bc4fd042aaa2c8e5bdb6bfac7114786d2cacab660dd864. 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/DEZB52440012.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x525520b143e7077e5ebcc1a9c21add70751ddcc3daed2e4842612f9d7ef3f777. 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/DEZB52540016.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xa68edf80cee53655522ef925aec4d957f1a3780ac28b2cf931decb45c4f80d3d. 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/DEZB52540017.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x3b2daa4e3fd9527bbfefaacbe7f2deb64555709a44042ecd015a54f50ac901f2. 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/DEZB52540018.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xe74cd3cee6f186ee4b34a8d286d7350f065028557fed92fb3f4d3a6bd3536e60. 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/DEZB52540019.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x8b62710284c17d196d81a699ae7eb92c304b615d4d9807ab0af809f152a8cc14. 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/DEZB52540020.