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 0xdb22bf2db4213bbe49a92465962ed2093f47688ff60dde2a149460ab4159c5ea. 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/1edcd69b-86df-4213-8e56-b3852d38b361.json and https://artists.proofprofile.net/proofs/artist/1edcd69b-86df-4213-8e56-b3852d38b361.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 0x06cb262f3cbacae8c82876a21269b53f27f3b3044709a9fcf77e975ef5451a17. Chain 2 (Bitcoin): anchored in block 956304 (2026-07-02T03:55:08Z), 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/QZTAU2122610.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xddefc858abde47c56fb2707df8a64b350f1c80486c82badedb3a59f00124aede. 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/QZDA51913173.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x6381ce9dab75b0d1109f780bf2c0b36b1bb8c3a7e301ccf12cd6bd6cc0703769. Chain 2 (Bitcoin): anchored in block 956312 (2026-07-02T05:09:12Z), 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/QZDA51913174.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xc4c1bc0df01f182fb5e237e6444b7c474d628ad77bf6b88878e82322075f6d55. 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/QZDA61895864.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x5461468b34e335f9cd4166c591efef0315fe377d5c0a06b351cdff3305dbb555. 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/UST8K1779943.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x25f6aade98aec3af865adb15144e1e90a4d6b9ba9e29c31dfdad573e8377ca2f. 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/QZ22B2019840.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xe0c6616af2372f8d48f1e2378b441965d73ac3afd191a5b2b725cf8da9e029f1. 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/QZ22B2019842.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xda0c3a49e610a8d04fd1fd03234e18b70ab534749257d1ae50092002cc3ec634. 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/QZ22B2019843.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x063b6442c4da9c54ec03dab46d1e0bb6f9ee4b44f1c2e6b418ce473afed36973. 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/QZ22B1868360.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x13b8239fa306fd8c7c940ecc2c27b3b939fff71ea77cd7853114ea95de2df6ad. Chain 2 (Bitcoin): anchored in block 957122 (2026-07-08T03:39:04Z), 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/QZ22B1805147.
Skinny Girl Challenge Pt. 2 (Go Up Go Down)
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x72a9f5b98fb0014055b5278f62d7cbe0df416271cd64afbc3a6deed55128cccd. 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/QM42K1783043.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xfd283b5c819cb0c948049aaebccd86e932499d059e9ba20023e11125f571827b. Chain 2 (Bitcoin): anchored in block 956304 (2026-07-02T03:55:08Z), 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/QZBRF1831193.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x99cbba41672cd297014db3756a42620983e59d5e06733ab961572f74f5ca42dd. Chain 2 (Bitcoin): anchored in block 956312 (2026-07-02T05:09:12Z), 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/QZHN31933280.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x048eb258b8c7ba4b8ecf2a61d8bd2891577301afa7b2697bd18d9b19686e58f7. 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/QZGWW2008281.