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 0xc302ef7391fd387f7a6c529250aecd39106e516048f4abaf29a465527d38142c. Chain 2 (Bitcoin): anchored in block 953408 (2026-06-12T19:28:13Z). Bridge: the canonical record inside this Bitcoin proof contains the same CopyrightID. Verify: download https://artists.proofprofile.net/proofs/artist/84252683-c63a-411b-b682-78341bd39c6d.json and https://artists.proofprofile.net/proofs/artist/84252683-c63a-411b-b682-78341bd39c6d.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 0x422130adb80e0d9f0f00c5d348dbff12db4f588a62c901000566bab717199fb2. Chain 2 (Bitcoin): anchored in block 958722 (2026-07-19T11:03:50Z), 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/USQY51498141.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x2e73ca257ed7beba5a6e5ba9a386775da46e73e833b07e00d3a9af61fc342cde. Chain 2 (Bitcoin): anchored in block 956500 (2026-07-03T13:55:21Z), 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/USQY51498145.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x8e12eaaf47e2da4f3bd61b0f620b7532b6a1efc8f0ccb864b0c01a13896c30a1. Chain 2 (Bitcoin): anchored in block 958185 (2026-07-15T18:19:04Z), 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/USA2P1602350.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xb17ec773a8136fdf04072373ddfd78d9c2fe3717d42839ed825ee6ed14e4f648. Chain 2 (Bitcoin): anchored in block 956772 (2026-07-05T10:01:46Z), 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/QZ4JJ1777488.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xcbdf4a206a54687a9f22b608ebd9c7cb3fdf71ab6eb27cd4e15c23c8ec5df87c. Chain 2 (Bitcoin): anchored in block 958489 (2026-07-18T04:13:26Z), 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/QZ4JJ1777489.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x0475c41b9c113f5c5a54c4c20bc125010677b0753b3e804f41a5a459efe2f08a. Chain 2 (Bitcoin): anchored in block 958897 (2026-07-20T14:57:46Z), 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/QZ8LD1777622.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xfefc948e751d95e926ac64436c2c4fa1994817b2e1bf12943151f7c3e33170fc. 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/QZFZ21906696.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x39f14682221d3d4abc48c0a5dd41df4f466dab7b3db8910c30100fbaf6bde74d. Chain 2 (Bitcoin): anchored in block 958430 (2026-07-17T15:33:28Z), 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/QZFYX2027345.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xd90bb89ec2e2ec04e940b9e2c893c719e7dd2d90715c86598b077ca6ee8a2fae. Chain 2 (Bitcoin): anchored in block 958300 (2026-07-16T16:14:30Z), 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/QZHN62058682.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xdddc5ae73f297de079c31084f0f1e0e0587ce01aabea1097c1eec7b77d23cd9c. Chain 2 (Bitcoin): anchored in block 958738 (2026-07-19T16:00:22Z), 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/QZHN62058683.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x4dd6f8effbb4367b37f62ea963740b6b329383c0f33be86c742fcf0482717e66. Chain 2 (Bitcoin): anchored in block 958517 (2026-07-18T07:54:29Z), 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/QZFZ62117732.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xcb8191429daa8c46c1b381415868e18f1a1fa381b3911831feadd6700b334151. Chain 2 (Bitcoin): anchored in block 958224 (2026-07-16T02:28:43Z), 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/QZMEN2174810.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x116325e3e3c621a2f6b3f5e74922578d6c28c70fbc069e6146cb44831502a8b9. Chain 2 (Bitcoin): anchored in block 956639 (2026-07-04T11:19:20Z), 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/QZMER2120717.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x633a8903e12307a7c3ea8eb1b9c8ff492e2aa23f1322a57ba42de5e93ed4740e. Chain 2 (Bitcoin): anchored in block 958644 (2026-07-19T02:21:25Z), 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/QZNWX2162725.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x7034f4e68d02d935dac13ce05d8e71dea95bffd7bbe7c050779c2ef9ad8e8b8d. Chain 2 (Bitcoin): anchored in block 958228 (2026-07-16T05:43:12Z), 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/QZFZ72275054.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x9ad5276dc54e2dd48d420f4db987ec642bc72394c87f182218e0a2c4cd6785d2. Chain 2 (Bitcoin): anchored in block 958489 (2026-07-18T04:13:26Z), 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/QZK6J2292400.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x2c8e93c0d1453e01aaffdbfe2e47b3bf6f4b6b720b8a37cd3833759a4904a785. Chain 2 (Bitcoin): anchored in block 957891 (2026-07-13T18:21:04Z), 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/QZHN82366438.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x210d20427afca15bb67794ff12b5b0f3e6c715d6c99c64ab45296a9869ae88c1. Chain 2 (Bitcoin): anchored in block 958650 (2026-07-19T03:36:41Z), 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/QZMER2363759.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x5c6d7b162af4838348f0e70e41559a3c81bcc4a6be22e8d5a92908671318408c. Chain 2 (Bitcoin): anchored in block 958142 (2026-07-15T12:37:00Z), 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/QZWFF2417102.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x1da3dd99b554cde7fbce65d20b204ef7d26185dec61ae13aa05e32e4c348bc0f. Chain 2 (Bitcoin): anchored in block 956375 (2026-07-02T16:51:38Z), 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/QZPJ32404905.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x5f4821cb22023265d0f37fbe25e767ab60c1931455ef10350405b0c73b5b6998. Chain 2 (Bitcoin): anchored in block 958690 (2026-07-19T07:14:39Z), 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/QZPJ32404906.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xe5754f1f7bf62d673afb2b87e7ae81f90775997f8b5068f21f636196df888812. 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/QZK6G2575010.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xe56c536a6932cbab1568583c1ad9acf1b6b52a8d1424d70de76615a848356d99. Chain 2 (Bitcoin): anchored in block 958256 (2026-07-16T07:22:18Z), 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/QZZ7R2542423.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x684da1f630fa8aabe19a0f0c5e6cf2d2c22c35743f97f483b81a16888e37537c. Chain 2 (Bitcoin): anchored in block 956894 (2026-07-06T07:53:57Z), 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/CA5KR2080671.