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 0xf206c8dfc72662ee17b6e599a92be41f899420ce0c19d4959d29eae1057b8efe. Chain 2 (Bitcoin): anchored in block 954667 (2026-06-21T07:29:20Z). Bridge: the canonical record inside this Bitcoin proof contains the same CopyrightID. Verify: download https://artists.proofprofile.net/proofs/artist/d2f4692b-e9d8-4249-a159-2e241b69d0b5.json and https://artists.proofprofile.net/proofs/artist/d2f4692b-e9d8-4249-a159-2e241b69d0b5.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 0xf8394c2c2508185bb42e5b3100f112625c80c3be69c15aa44da4dc1cddd2d8d9. Chain 2 (Bitcoin): anchored in block 957118 (2026-07-08T03:20:19Z), 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/ES18B1703328.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xf36ff33ea981460a99390727bb66744c8ec5ef4e68b8af5fbc254f1713e42a5e. 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/ES18B1703335.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x9d6e021a7eb2bbdb52f8e6bdcf4ccf74ae1497839b80931a384438326b451234. Chain 2 (Bitcoin): anchored in block 960207 (2026-07-30T04:47:22Z), 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/ES18B1703324.
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 0xd99ec23f672ae46f4e54592ee4348c8437f2910fd51e7e60602ccc8ffd00ff7a. Chain 2 (Bitcoin): anchored in block 960397 (2026-07-31T12:24:41Z), 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/ES18B1703325.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xc1706c7d17a545fdfc1ea75046a436621071bdce2eff2c0195f79e3d7d7f4ab2. Chain 2 (Bitcoin): anchored in block 960229 (2026-07-30T08:30:10Z), 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/ES18B1703326.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x3bfeadaeea0fe619c48523a8d43877533de85972528c3a9a10f40549a6fb7483. Chain 2 (Bitcoin): anchored in block 960340 (2026-07-31T03:15:04Z), 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/ES18B1703327.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x9de4550c954f5faa44c6f0b3cf3b7f36f32a3e6d6741aa5ec1f6d91d8c529e20. Chain 2 (Bitcoin): anchored in block 960368 (2026-07-31T08:26:41Z), 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/ES18B1703330.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x6901b107faab82246776ea57589993956fee213e9b85ad8101ad2e456a763a26. Chain 2 (Bitcoin): anchored in block 960455 (2026-07-31T19:53:13Z), 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/ES18B1703336.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x58390d76f5d3bf26912516d7fc017b183945bf4cdbf956a164fcaefe575275d0. Chain 2 (Bitcoin): anchored in block 960473 (2026-07-31T22:27:44Z), 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/ES18B1703337.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xe3b0836d9b1e67367edfba47abec2df6c3497521b06aa1adce9381289964de96. Chain 2 (Bitcoin): anchored in block 957124 (2026-07-08T03:53:27Z), 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/QM6MZ2489252.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xdb80e601e439f9901fdb030cfad3473ca2e86227a7736412bde4081d33a2a5e9. Chain 2 (Bitcoin): anchored in block 957145 (2026-07-08T08:56:20Z), 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/QM6MZ2489254.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x2342ca8318036ca5e2da41f6ea33dc6ad0f9f31e4d327310ec493731f209d2d5. 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/PYC842419926.
Recuerdo de Ypacarai, 70 años, Intérpretes varios con la OSN
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x7e8e85298026de01669ceba1f102c92be73b6bc6f2b14d4f38687f7041fb41d7. 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/ES18B1901262.
Mombyry ñaimé rire (Cuando estemos lejos
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x43ac209eb3511f83333770818837de9dab2e477139e5e1efd2c8a215b3f4b1cb. Chain 2 (Bitcoin): anchored in block 960121 (2026-07-29T15:22:21Z), 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/ES18B1901259.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xfea71a77ac92b8e82b21f2adc622aa77d547db36cf43c5f4e8a34a521fe4241f. 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/TCACC1461515.
Sublime Gracia (feat. Cynthia Ruiz Diaz)
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x132bed4ae289073d45c69e67890d11cdc2e049081714a899cc65bb6d3918c1da. Chain 2 (Bitcoin): anchored in block 957145 (2026-07-08T08:56:20Z), 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/TCACC1461521.
Todo Debo a El (feat. Cristhian Blaires)
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x8c55a84e691571a4adf153a596347d7fa138c9702cb4b7f8559668e887ba8ef2. Chain 2 (Bitcoin): anchored in block 957124 (2026-07-08T03:53:27Z), 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/TCACC1461523.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xe4dd78b07c92beb3eb9676f04238c5c5c125c46fa939bededbaeafdcd16e1e38. Chain 2 (Bitcoin): anchored in block 957124 (2026-07-08T03:53:27Z), 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/TCACC1461524.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x9fc7b151d93614adb7c5d55120ca223d28820581aeb64a1c245f1ddd48653f85. 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/PYA831900016.
Orquesta Sinfónica Nacional del Paraguay
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x1125664c9f56a0d3f0e9c1b24ab5962e7342a0cc4f46eef8d2cb4ce6ed5b0159. Chain 2 (Bitcoin): anchored in block 957124 (2026-07-08T03:53:27Z), 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/TCADP1816495.
La Batalla (Original Motion Picture Soundtrack)
Matar a Un Muerto (Original Motion Picture Soundtrack)