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 0x37b8139d1143cd027ef46a7e2947385a73922130c4108904ace6d2b949283b7c. 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/955df93a-da6d-4d7d-85cf-526226374a1c.json and https://artists.proofprofile.net/proofs/artist/955df93a-da6d-4d7d-85cf-526226374a1c.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 0xe314152e4382ee1a383af5b60ea6727842f7c26f56ca23a6d2669fdc6e529ec9. 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/USDBB0602462.
Your Holiday Soundtrack (Cuba: Selected Latin Music)
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x38203ffdc4348bd5561e17b929656d3f42ba7d7186818342060837b849cc4ef7. 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/USPR39882349.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xda92e95c159e2c97fe6fa0d07a15cfd9bc37ada3b96c9c7987717557a08e9a1a. 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/USPR39882352.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xe55e844a69759f29f35a73dcdd428252962e67ac5e58ce72aeab5141674fa972. 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/ES7710901703.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x12c032920d3bb5da40076e3afa5f8c625e2ab2f98142260c62762dd2c73adfa4. 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/USDBB0601355.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x220dcdbc3cbb8469051a0ba8c06a44920114262acca123f34d1f9b428e51fcee. 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/US78T0507208.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xaef770dfa698e19537ba76617cba8d70dee1190c04c08cb09358a8578556a0f1. 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/US78T0507207.
Cha Cha Cha At the Palladium (Mono Version)
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x180730a803ec4ce1be79a847ff1e1699e075eb01daf5609c1e75c0cf31d28d3b. 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/USDBB0601701.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x7729bcf510f48920a5bb79b3fb8e942af28e6a275b1ddd7fdf91ea202eded844. 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/USDBB0600740.
Invitation to Cha-Cha and Mambo (Mono Version)
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x94b304cb15854d049bd39cd22448d07bb19f437d2c0859fbeec844e4bca950f8. 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/USDBB0992503.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x12c032920d3bb5da40076e3afa5f8c625e2ab2f98142260c62762dd2c73adfa4. 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/USDBB0601355.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x33b9999da60b0234a3b348ac88e500fd7646feaf73e80280b65b4d513f08879d. 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/GB4FX1405867.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x3d3133052808db47b2d9a88988b167a78fab69add6b5503b2dd0546724b35ff4. 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/GB4FX1405876.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x0cddd7a9e64673847d0f9e83a03c4a6b79802930792f87646906f29ccd66a968. Chain 2 (Bitcoin): anchored in block 959144 (2026-07-22T15:38:35Z), 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/GB4FX1405881.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x60ac38dc09c082603ebaaee0180569bff241c5e905ec4da811cf36448492d3ca. 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/USDBB0992147.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x75cec66a1201db077f994d6c8238492a04e1bccf177220f56a1cb2a1f6309e40. 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/USDBB0600294.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x6d951c17ca518d7a8c0cccaf610c085429051f0371532fdfb37a550e508120c6. 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/USDBB0600303.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xe61f7d6307af7daedf29aba9b33692494128b2f75c50b67893067900da91e3e8. 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/USDBB0601645.
The Only Salsa I Know Comes in the Bottle
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xe7f69819b13081b57095bff7923c0114d3ab986fdc68273982c6148af817c515. 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/GB4FX1409644.