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 0x11f9bcdba3f823c8fd6814f81c8a303faa2ea81a22338c2e59f0555cea8ad64e. 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/b9bf9742-889d-4c50-ac51-a4d16d082783.json and https://artists.proofprofile.net/proofs/artist/b9bf9742-889d-4c50-ac51-a4d16d082783.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 0xb591140b0453132b1b0a23e37fd4a4fa2917502ae03d196c43c9f1788d4542e9. 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/AUGBT2362553.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xa2f66764c63b868999357cc7bd4cfd521cea59a60d274fdcbcbd2daace42c9e5. Chain 2 (Bitcoin): anchored in block 954130 (2026-06-17T19:07:14Z), 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/USX9P2394665.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x89f194e38ad26b5029ca7ec34b08552ff39d415bcd90a15091a8a731b60fdf9a. 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/QZWFG2362499.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x292641ab0f711aa0ffe0d7a0824a088d61130018a7d9a15d0663d08bc75d88fb. 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/QZTBE2350692.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x32c3b6f725c67516544c33e466ccd21e8237d973de4f4ca5e7f9dd21ef324ae6. 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/QZMEM2378790.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xe45036243064c50e2fb2aeb79061016ed3613f95f3c4a126286431be208302bd. 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/QZHNA2308651.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x4befb8d3996bf34e4aa8a09ecdba5378b85b6ef3da493acc759d44038b72d617. 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/QZES72341793.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xc55e1250a17c8ceed4dd700e6b3ba4cf111c62ed366352d480bfa017af9820a7. 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/QZDA72313667.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xa9a7ff64c25588118291e5ef15ea5b3573bce4476662fe22745b73e35ab35e24. 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/QZFZ32359511.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x1989f55a7b698f17a3b1faf8d2ca2b40d2a52acd82d782c574629a2d3e7deb0a. 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/QZTBA2203266.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xf423f51cd553eacaad13562c173673809634cf2763f5012b5f77006f5f686681. 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/QZTAW2283958.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xe50e11408b68a94d4702722595bfc3e5d49b674588abfecd270e9157597fed6c. 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/QZRP52281744.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x7524d6698e22204129f3e698de68c0e77eec28b1452c4e47ba61709a872a7fa3. 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/CH6541643628.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xaa862fd0fc19012b311a317e464f8050c49b6c29cb510ee761c43e60d6d7cf15. 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/QZNWS2263445.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x173d1d482de4411a383e03f80641e295605d50e3e1c2b011d52f31ea99681fa9. 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/QZMEP2237467.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x5e734b3590e54fea12ea68c42c0aadaa2d8c8aff258abc01157fb95ecefd614d. 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/QZK6H2231483.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x65ad6218e065f5817c7c4ccd8233aae0429b2fec4e25cafa02bb2de2fbbb141c. 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/QZHNA2220062.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xa8c32a8f128aedc7307352a837dfc696ca18b377e67ab2e59f94c6829e7c92f9. 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/QZHN82214917.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x6f238aa9ad2d588ebcb2ea89882d5acfe6eab06f09509b50d9210e56c3b1f2a6. 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/QZES52284563.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x593733ed50c005234d09899c7ddb0725cff5b212abf75dcf392952a70e22dbe2. 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/USA2P2161921.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xec29761fb4eb954cb26072f8869f662e28f55372794813d711712cd80986d097. 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/USA2P2139532.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x6542268e02403f967f52024e1debc222b080aa573ca6a78809858b2087fd0aa3. 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/CH6541665844.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x12610a07e5aea1fb16b78e47fc440bfb02a1b309c0fca1ec9d1f2eba844329b7. 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/QZTAS2416280.