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 0xeea6c9ceb68c269bfd7d0f5a4d4a40b8a5d25f99d6a943876a30c56a13fb87cb. Chain 2 (Bitcoin): anchored in block 953407 (2026-06-12T19:24:56Z). Bridge: the canonical record inside this Bitcoin proof contains the same CopyrightID. Verify: download https://artists.proofprofile.net/proofs/artist/14a5d869-669f-4741-b616-dfffd97078d8.json and https://artists.proofprofile.net/proofs/artist/14a5d869-669f-4741-b616-dfffd97078d8.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 0x17f3e469c510fa53d8d858dab34457523145412dd9a6b12875dd797a0829541a. 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/GBPVV2300245.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xced9b0b521059b659a222bfcf465d400e414809f27e0ebae769014f80ed6225c. 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/QZGLM1912256.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xf8f7b049fbdbe04008b968e943a71950ffa059254d4265c6fac4e2a51bb7b2e1. 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/QZ5AB2251771.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xf8f7b049fbdbe04008b968e943a71950ffa059254d4265c6fac4e2a51bb7b2e1. 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/QZ5AB2251771.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xbf2151abdc94af5fec7d1363c55a635f219ccc4a355f9926f8459595ffb8da8c. 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/USCGH1815220.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xfc2aafac1bebe8be579789b83854673659558d971cf1550a476d6353c6127b88. 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/SE5752066598.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x97ed4c3b4b8cfcb5c80c94b42177da607084b5bbf732742e603af885ac5bc707. 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/QZHZ31934787.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xe44da60a502583e0677e8dd50f3fd568960137dc0df43328f1e695fe137b32a2. 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/MX2682100033.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x9e3835cd3ce145fb6fb080602db7dbaa4568674e504400810849aea50f5f9d86. 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/MX2682100013.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x5b06b8c0f51316c42b4e323e247e0cdeb04b7a1050b6c8cb8e4c9d3da95051cc. 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/MX2682200002.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x23d38880a011e98b14d46dfdfc22df8084231eed53240e0ab2e665b36d1b2257. 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/MX2682100035.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x2ad1c9a641e41587163fb4293d42aacb66159a426d1bd0ddaa621f0f7b288b45. 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/MX2682200003.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xcfc109d47ad90e418cc96a0d1869d986e809d124ae889da81ca9e80fe8eadd59. 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/MX2682200004.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x6a2c968ba5712f07362d8fa6383b7a0067e683ae1ad97913adb455240451ce88. 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/MX2682200001.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xe44da60a502583e0677e8dd50f3fd568960137dc0df43328f1e695fe137b32a2. 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/MX2682100033.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xc3f32e86d54fddd4a7770c8f724fa6e9f5e65fd25d7d9c361815a13c1fbb973d. 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/MX2682200005.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xb98b163a0ee669a9f6a1c030a938242ddc64107fb998e2bd3b1e026a0b8a227f. 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/MX2682200006.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xb53fffd3e99bfed032602d8f5260c8c445221ce7b216ac3643f1800649c145f9. 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/MX2682100029.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x1025c33f432e7f11ab05fe399ff5fe05871ad34010e54aab5c101a6a2d430ef1. 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/MX2682200008.