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 Note: an OTS proof may carry multiple Bitcoin attestations; OTSBitcoinBlock is the earliest confirmed one — a later attestation inside the proof corroborates it and is not a mismatch
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x4d01cec967f28a28aca3419b59c5d19f0d0d1bbf3ee015bce0f90e2d71dc9405. 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/5a8b1e4b-cdc7-444d-87e1-7b040fe3c1b4.json and https://artists.proofprofile.net/proofs/artist/5a8b1e4b-cdc7-444d-87e1-7b040fe3c1b4.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 Note: an OTS proof may carry multiple Bitcoin attestations; OTSBitcoinBlock is the earliest confirmed one — a later attestation inside the proof corroborates it and is not a mismatch
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x1978e87aa1c415c40f4136c83d147742933cd52b3d51a566506463df47a15c47. 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/QMBZ92201184.
I Think That I Love You (feat. ROMderful)
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x0f5c9dfbdbcdefc4511cbd71678fb281d81a9842e0f2189af93a0cb50062b92d. 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/QMDA62186521.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x31e4e3194c207ac858c9c9ff3e9dfd3adb42d5fece1d7c31e19fdf86a6790bf1. 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/QZHN72072327.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x31e0aadb4a87446cba4c418e372d012265771cdfc0e91413e9958981f38750e9. 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/USUYG1347291.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xd7a253b502b132114ff7be1aca97499c9e4955d57f3543014edd0b9fac110636. 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/USUYG1348105.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x4c4d60cb81c87abe93106f54af5bf6643c3027ed9422a7bb95e47170937f00ba. 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/USUYG1348106.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xc55205dc4e9ce49a8de642b6e88b7863008cc2392100b8cf5d6242ba1ba0b7b4. 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/USUYG1348107.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xf23d25a2ad686504b1be942c2f1b7a295300b9945a3bcd79a6326bab653d687d. 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/USUYG1348108.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x3dcf87fb34ee71f482a572bfc1454bc0836c7c6108e9a3053d42220d385977e2. 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/USUYG1348109.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x8047e6c2973c1c8bcac3bb167a782a90329253ffcf3cf58b7a0852243d809707. 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/USUYG1348110.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x051d2da75a82d190eab7dbdd4b43d05f87367c49931fb2800f7c7b9b78a68796. 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/USUYG1348111.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x240f50c2c647bbdf55a608f3b3651efed93f89c487671b82cbaf7af5942dce17. 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/USUYG1348112.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xf3c32d25095e5f716fb9e93846c3ff50ef936701293205421ce16ce29958d1d3. 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/USUYG1348113.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x2a51a806568939d4c5369b9888654d9683643145a8a3438ee4399e797cacc952. 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/USUYG1348117.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xabc9603694dfb93caaba62829ac794a3f4f20eaa5608b14fe62ed9aba54d4677. 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/USUYG1348118.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x02267bc1e4f22de7128c66f3c306c22bb043b07b965849c66066c4b0d8d1efc7. 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/USUYG1348128.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xc8203343c8ff7bebc7500169c1b4f91956252c33da49fe5eaa627ad765a306a7. 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/USUYG1348129.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xa0923e91f45b304947f3eafe4838d68cf87069d9e6dba915e2af6935aa903702. 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/USUYG1348132.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xb1b4f56956dca5d2714d4c9202c22a927d4d696224fb19007da9bc2d3cb52509. 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/GBKPL1981131.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xd60cf1c9ee517307a68ad801ee1a1faa6be86fe7c46feeabb71d65d10e811089. 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/USUYG1343654.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xdaaa5fa9267fd3bae57c326ca559230e9623d56daeb3f572f49e5d6907f3fc26. 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/USUYG1343655.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xee65bd321cd4394618f7104a3d7573a1f6832fa6320e6891d40aaae0e012e5b4. 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/USUYG1343656.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xda7386e9d189e50dfcf99ff672f153bb2f1fb5fd70c08c29208fdf23de9dbb09. 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/QZVRC2200018.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x08f49bb2d730d557e9f2e40c2e9ad545ab7a797d38700c71fc520c32a1e3047a. 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/FRIDO2414905.