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 0x95892f10c3e94b9af09593ac5f165cc1432e3642939bfad6d6770e095227f1f2. 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/4b5e2a2b-d8b4-4154-a743-571975a203f4.json and https://artists.proofprofile.net/proofs/artist/4b5e2a2b-d8b4-4154-a743-571975a203f4.ots, run `ots verify -f record.json proof.ots` (https://opentimestamps.org).
Canción De Cuna Suave Para El Descanso Nocturno Del Bebé
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 0x1942e9cc1379d661e229bb74682c13e997af878b88539dd89ec8338614d78c63. 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/QZ5FN2589885.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xd6eebb30dc33c72a7498f2eac9d2c366ec6b030d688d9ba0710516087f362b0a. 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/QZ5FN2589893.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x994202056af7cb4c78f5849f96e021730b8e68825a376eef5f2f80c042b656c9. 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/QZ5FN2589902.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xb9dd01b16c9d51c81ceccfc900e21ecb5cb207a266e27090d94c2f8fd62786ca. 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/QZ5FN2589917.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xfcba19c09f12047a66f503a0373ca1dfbf30169d5e85c543cb50f67f5166f52a. 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/QZ5FN2589951.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xe365450b959488abac421bc57681f10881b17086f58307ce44250a73aee9cd37. 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/QZ5FN2589958.
Cuentos Del Bosque: Sueño Encantado Para Bebés
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x4bca8def35c52e3f47c289829ef5dd06eafbe450284b078cb5011437c12453b0. Chain 2 (Bitcoin): anchored in block 960240 (2026-07-30T09:57:33Z), 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/QZTRX2411126.
Los Helechos Se Despliegan A La Luz De La Luna
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x76d33920fb3ebe9baef25c9147f01014299f24a0caf4c5629304e8db8855bfb2. Chain 2 (Bitcoin): anchored in block 960284 (2026-07-30T17:23:26Z), 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/QZTRX2411135.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xbad24f2ff36dc25d2708c351dd27d9098c206001a2db186eaa8398f06766a89b. Chain 2 (Bitcoin): anchored in block 960321 (2026-07-30T22:27:30Z), 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/QZTRX2411150.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x0c3d3e0f98344b4a80c5de60c3dd475241bb9743fd959462e06dc6e4cc1221d6. Chain 2 (Bitcoin): anchored in block 960288 (2026-07-30T17:41:38Z), 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/QZTRX2411166.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xc3048b76211d0942298c98b0646ed20e259a1ddb0f03a6c7ebf204407467d150. Chain 2 (Bitcoin): anchored in block 960291 (2026-07-30T18:23:33Z), 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/QZTRX2411175.