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 0xdba2e4a2d2983dcb724f1ee41f456561dedaf1307089b7fe8467b2a077a742b2. Chain 2 (Bitcoin): anchored in block 953803 (2026-06-15T15:41:00Z). Bridge: the canonical record inside this Bitcoin proof contains the same CopyrightID. Verify: download https://artists.proofprofile.net/proofs/artist/e0b96d4b-c730-4599-ab8b-b5933008a850.json and https://artists.proofprofile.net/proofs/artist/e0b96d4b-c730-4599-ab8b-b5933008a850.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 0x2cefb098dbf85ac467e7da3a9c04c321388eee226f0e137d47b503f58330d560. Chain 2 (Bitcoin): anchored in block 957785 (2026-07-13T01:55:31Z), 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/QMDA61504963.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x7058d74ca28ae85a2e8d49442c92f8b6278a501015d383a4752b26a57bd1838d. Chain 2 (Bitcoin): anchored in block 958544 (2026-07-18T12:14:37Z), 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/QMDA61504964.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xeae90e27bc046905493c26b11882afc4959b1ebee1d791b21c4ff2815b6968a5. Chain 2 (Bitcoin): anchored in block 956545 (2026-07-03T19:59:51Z), 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/QMDA61504965.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xd22353d156e13b4c47106255adc74f8361248ee0e23cfddd7a24808ac9361dc1. Chain 2 (Bitcoin): anchored in block 956545 (2026-07-03T19:59:51Z), 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/QMDA61504966.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x503cb9f3c90ffb3efa8dd35c6452e25719174692101ddc1aa112f3e1c7380f9b. Chain 2 (Bitcoin): anchored in block 958373 (2026-07-17T06:09:33Z), 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/QMDA61504967.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x832f122c4b7461ceb98fc49d6010f1fa24b3788d78664994802771eaee692646. Chain 2 (Bitcoin): anchored in block 958377 (2026-07-17T06:48:00Z), 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/QMDA61504968.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x461f4c090f79fe2d0d5a0374cededd4a8c10c05d5bf2804e8571d64d8e10cc0d. Chain 2 (Bitcoin): anchored in block 958373 (2026-07-17T06:09:33Z), 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/QMDA61504969.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x15383e8fb66871c9cfd18d40702f1accae4583191c41525ba6d3684cecb2e86d. Chain 2 (Bitcoin): anchored in block 956560 (2026-07-03T23:28:02Z), 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/QMDA61504970.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x14d3a1f56253186163587d315bd5de568613a8c6ae2240b60cf053c9503afeb4. Chain 2 (Bitcoin): anchored in block 958601 (2026-07-18T19:27:02Z), 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/QMDA61504971.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x2cefb098dbf85ac467e7da3a9c04c321388eee226f0e137d47b503f58330d560. Chain 2 (Bitcoin): anchored in block 958377 (2026-07-17T08:53:14Z), 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/QMDA61504963.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x7058d74ca28ae85a2e8d49442c92f8b6278a501015d383a4752b26a57bd1838d. Chain 2 (Bitcoin): anchored in block 958377 (2026-07-17T08:53:06Z), 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/QMDA61504964.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xeae90e27bc046905493c26b11882afc4959b1ebee1d791b21c4ff2815b6968a5. Chain 2 (Bitcoin): anchored in block 956634 (2026-07-04T10:04:33Z), 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/QMDA61504965.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xd22353d156e13b4c47106255adc74f8361248ee0e23cfddd7a24808ac9361dc1. Chain 2 (Bitcoin): anchored in block 956484 (2026-07-03T10:47:44Z), 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/QMDA61504966.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x503cb9f3c90ffb3efa8dd35c6452e25719174692101ddc1aa112f3e1c7380f9b. Chain 2 (Bitcoin): anchored in block 958468 (2026-07-18T00:27:51Z), 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/QMDA61504967.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x832f122c4b7461ceb98fc49d6010f1fa24b3788d78664994802771eaee692646. Chain 2 (Bitcoin): anchored in block 958180 (2026-07-15T20:41:52Z), 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/QMDA61504968.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x461f4c090f79fe2d0d5a0374cededd4a8c10c05d5bf2804e8571d64d8e10cc0d. Chain 2 (Bitcoin): anchored in block 958180 (2026-07-15T20:46:46Z), 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/QMDA61504969.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x15383e8fb66871c9cfd18d40702f1accae4583191c41525ba6d3684cecb2e86d. Chain 2 (Bitcoin): anchored in block 958373 (2026-07-17T08:52:40Z), 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/QMDA61504970.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x14d3a1f56253186163587d315bd5de568613a8c6ae2240b60cf053c9503afeb4. Chain 2 (Bitcoin): anchored in block 958908 (2026-07-20T18:31:08Z), 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/QMDA61504971.