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 0x554ad922e0ee56fc6da59e436494e764e9dfdecae4a79326d15bb13584478138. Chain 2 (Bitcoin): anchored in block 953742 (2026-06-15T04:47:56Z). Bridge: the canonical record inside this Bitcoin proof contains the same CopyrightID. Verify: download https://artists.proofprofile.net/proofs/artist/78d5aedc-9aed-408d-b949-1a79c5a948dc.json and https://artists.proofprofile.net/proofs/artist/78d5aedc-9aed-408d-b949-1a79c5a948dc.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 0x99bc0e835903d21e102b8d8de26952e5ea2a7295cde7616a00f29f0e71c5cbdc. 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/QMDA72261444.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x2092e97770564154da2e2d24fc29cf50230efc732cfbb7058959c996341094ac. 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/QMDA72261445.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x971500b95f60ea5c0277cc84924ec0d3edea42abb0875b2ae4e582e10f26f40b. 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/QMDA72261446.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x0737f121739b46e5452d074c85921016ba520180b1129f470d67ac4942b15b08. 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/QMDA72261447.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xb60e0acbd8c9da5e597e2e40b276ced669d1c6d39b004d4972575694fcbfe999. 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/QMDA72211365.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xb58965a47c2adbe6146e46b8b77754fdaac1ade2634a1e091f99d67c70e455c9. 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/QMDA72261449.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x624b2d8a6a4bf672f406487888941f78660456a2286d4f3efb95832621acd0d3. 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/QMDA72261450.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x832fbcb29c5005fe814123511094f31b655e8b21fd11cfbf1fd317362492839e. 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/QMDA72261451.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x86b1eb10367370957086b9a33bf8be40c1e14d91019fcc9cf02be28b724d4089. 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/QMDA72261452.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x59ba7155428946e93eda890c994ce1f87395b08f55530244b9e5b14f22750b95. 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/QMDA72261453.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x03d0f33a1072131ec251148bb639f2fc56711ba512c5c93452a841d7e3e5e3e9. 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/QMDA72261454.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x4e641f281c2dc9fb7f1275ec4ea04247b1d38c5bab347f49329a82372ee2a7ad. 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/QMDA72261455.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x2a9f240e48a7c28c977402f7493629f7f4e7df679e9033e3bd64ba2d8678f344. 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/USCGJ2190595.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xeeb7ed4100d93dd231cebeea8d8580dabf50ca433c24d0df2e5695d405756a27. 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/QM6P42213591.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x7c36e1f751a3a9c2a1b377997651cedcce0c43babca9db58de11953364619cb3. 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/QMDA72261459.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x580178e9ef460efee4986bbba6a569ba5c012e9137f9d47c982f5eb35abad2b9. 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/QMDA72261457.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x87623983bb8366cbf8d27b00c728cf2a60b3d0b1effcb741ea93f75bb5a7a255. 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/USDY42106538.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x98d2aa307574f580d9129df74d84f3e810954fcb185f936f00fb65342c0e53e4. 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/USHM92128126.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xe8f4988b913864b5b51056511d8c29d91d300dbc93e55fbc364db511b156327b. 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/QZWDD2374234.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xac14b60a69d1464c810dd3e980e5b16513166290cbb1d53f9193297d5bc68ee6. 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/QZZ8A2496129.