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 0xafeaf7cf874cd73999181e4062e3a722787c7c9b1e81e76973868890c8fc8814. 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/e3fec374-5dfa-43db-b59e-296ab59b31a4.json and https://artists.proofprofile.net/proofs/artist/e3fec374-5dfa-43db-b59e-296ab59b31a4.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 0x11255c53fa3d0468d409c21111633d0666965bdb13f0a713772a8bf547251ea4. 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/QMJMT1801871.
What You Came For (feat. Zack & Jim Jones)
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xed0ec760caab8538be25ccc4534d863420d640c7117002eee8f606b05190ddb4. 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/QM6P42317755.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xab63ca4678343a6389c8322abfd16b0e84718726cff891eba27460d3e953b1e0. 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/QMDA72227540.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xab63ca4678343a6389c8322abfd16b0e84718726cff891eba27460d3e953b1e0. 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/QMDA72227540.
Don't Wanna Talk (feat. French Montana & Zack)
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x9bf37e88b5d02417f6f93c7f87358253f5ba24f673e7d04b8ea2db460cb7e977. 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/QMDA72227549.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xcc1d5a260358b4a8a7acc5187592c2ad064934db2239d1645f5566fd50b0a31c. 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/USKO11501089.
Die Young (feat. Meet Sims, French Montana and Zack)
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x147c4343ed381205cb3e0a7905cfb853af6ab19ce972a4ee636a0b78adcb3b1b. 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/USKO11501090.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x2e4d8ae2a26362b2956e4a2927e0650b2c18b4cb76a384d994c8fa319fad32b9. 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/QM6N21406369.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x593cd4bcc29067f47536c850523ce5ed17291cec82fd415fac2a9ae61dd924cc. 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/QMFMG1432253.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xd0c15ff339a021896cb1fc08703a7ed77da29cd55a7667b1120ade6952cdd613. 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/QMFMG1432255.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x2aa231e2d3dbed88b6bc2f0a2c89f65567405b9a1ec3072a2ed2f8f56222e43b. 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/QMFMG1432260.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x147c4343ed381205cb3e0a7905cfb853af6ab19ce972a4ee636a0b78adcb3b1b. 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/USKO11501090.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x0fd9a22dea0cf8f3f01cbf71a006ac9f17c0cc8ba1aaef22e31a153df9867a04. 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/USRC11702075.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x38ed0263d82a602bbc59ca120e6f88f3c95edad8770148892499deb210c5d88d. 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/QMJMT1601059.