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 0xaee1eca424220c30ab23440b0fb97cee59ace8a3328630ae34365d023febfb0e. 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/c3cb2326-7656-4567-869f-e1e76f3f6500.json and https://artists.proofprofile.net/proofs/artist/c3cb2326-7656-4567-869f-e1e76f3f6500.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 0xbcfae53ff31dec85f236ea6db63cda883459ee99eb51130b325da08e0922c139. 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/PL70D2300277.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x5eea2d419f942c600998fe4573da805243926b06d9361a3ee382507fa962a6b0. 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/PLI292400869.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x02babe9df07c757d489f18c3b390b3dee5b729b405be77e692c89801c44e75c1. 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/PLI292200618.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xe81f66715fd65a20a1dbb4ba193619108e34e9fae89babc77cc616cbfcec8711. 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/PL2DY2200093.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xab1b31088e8d949258b14fbbb5f2ec3760187ced141ab7a7c0c5922d56837d73. 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/PLI292200550.
Non Serviam Tom II / Ważne Są Rzeczy Ważne
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x986b1c357d9e3b388353ec186493a58a989ba1f043b40aa99917ba370be9ee93. 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/PLC062418896.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x0809299423c017a165a87aee09cb25ae48511cb0a5f278021edad618d321d0c7. Chain 2 (Bitcoin): anchored in block 957120 (2026-07-08T03:22:41Z), 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/PLF242411842.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x427ce92fc7ffe7a6454683e04a70a5ca6fb240bd321d8cf823cb7feb8d0b2f4a. 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/PL86E1900010.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x9ec752913a0922e1e2c3ebf4a531d7f4f36e1996f9ed780a7e403718405ecfc7. 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/PL59G2400424.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x0809299423c017a165a87aee09cb25ae48511cb0a5f278021edad618d321d0c7. 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/PLF242411842.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xbc1fd76bb552b42d23f69990e1737844a7a4eccdee05480d236f5be5fe9ef1d8. 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/PLB382400863.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x0809299423c017a165a87aee09cb25ae48511cb0a5f278021edad618d321d0c7. 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/PLF242411842.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x427ce92fc7ffe7a6454683e04a70a5ca6fb240bd321d8cf823cb7feb8d0b2f4a. 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/PL86E1900010.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x04062334799ba9854624284212a46abb0c4856d42d961778073e93af20703511. 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/PL2E52400010.