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 0x28616fac37a5cf4952abda65c4663bc3b3c08dc411776561044fe7bc36652578. Chain 2 (Bitcoin): anchored in block 953742 (2026-06-15T04:47:56Z). Bridge: the canonical record inside this Bitcoin proof contains the same CopyrightID. Verify: download https://artists.proofprofile.net/proofs/artist/7d4acf90-9f49-4eb2-bfb8-ea0e5e281ce9.json and https://artists.proofprofile.net/proofs/artist/7d4acf90-9f49-4eb2-bfb8-ea0e5e281ce9.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 0x7e3293ab8ed55e17d47360d38dbbbe65229e73fd729395c9ab58c66475068fe2. Chain 2 (Bitcoin): anchored in block 958091 (2026-07-15T03:17:03Z), 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/ES71G2001945.
Mix Tropical: Perder un Amor / el Ejemplo
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x1983a9e50b0a889dbe0df5c1fdd7804d6c6f12cf6e78c3637047fcd2258c6840. Chain 2 (Bitcoin): anchored in block 956826 (2026-07-05T19:27:56Z), 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/ES71G2001946.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x03aff4344dabb8830a1c748579d6cb18579106f7d2bd742a08770be5be0113b8. Chain 2 (Bitcoin): anchored in block 956634 (2026-07-04T10:04:33Z), 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/ES71G2001947.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x6cd78e13f2a9b69ca5964c9a81f7450ad2126b36b324b7fd1e105536a3379844. Chain 2 (Bitcoin): anchored in block 958489 (2026-07-18T04:13:26Z), 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/ES71G2001951.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x581a2be88ca0e49ac541cbdcb8b4d2460da008e06f19586b887356886fd41b5e. Chain 2 (Bitcoin): anchored in block 956725 (2026-07-05T01:12:41Z), 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/ES71G2001953.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xfa5c8a85cb5a3dc3f92e883b9157ec633a9c807ee091bc35c064466ef5279a34. Chain 2 (Bitcoin): anchored in block 956725 (2026-07-05T01:12:41Z), 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/ES71G2231422.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x46b72fb242c37efc95b3f1a1708fb6cba057cd472c07ff78c8a0b9b89072fca5. Chain 2 (Bitcoin): anchored in block 956639 (2026-07-04T11:19:20Z), 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/ES71G2231421.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xd84955895c4147b49c62eecd4649f93b2e5e2d1bbabcb63511a8c14d61069dd7. Chain 2 (Bitcoin): anchored in block 958238 (2026-07-16T07:09:49Z), 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/ES71G2231423.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x0e77ad38da7e703d872f36896ec5705c9dabe8c7164f25f1c6aa28d736a109c7. Chain 2 (Bitcoin): anchored in block 958489 (2026-07-18T04:13:26Z), 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/ES71G2231425.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x0506cc5d2ea451e0a8cf5552f5deec9d124710b0a6317a9bfb71d501b6a1b0e2. Chain 2 (Bitcoin): anchored in block 958286 (2026-07-16T12:43:37Z), 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/ES71G2231427.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xd1f49fc7d4f0856fc31c1799112370bce129f7672dd9af3b8e4c6e908d7d95e3. Chain 2 (Bitcoin): anchored in block 956822 (2026-07-05T18:48:28Z), 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/ES71G2402568.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x218d40f7ad7d17d9f561cb40b564ad7b1332536afdf3d6ea521dd32d47dabc02. Chain 2 (Bitcoin): anchored in block 958251 (2026-07-16T06:29:25Z), 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/ES71G2402569.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x0febc379a9dd6427515e41954731576ca1767e9d59d874976f5f5493483afdaa. Chain 2 (Bitcoin): anchored in block 956620 (2026-07-04T07:11:13Z), 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/ES71G2402570.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xedf7ff72ca03925dd621ef7ef86d2de63b3cb37d497dd16023eb6e9a6c7e1f21. Chain 2 (Bitcoin): anchored in block 958839 (2026-07-20T07:01:59Z), 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/ES71G2402571.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xa47d87e3ac46893bba46b677bd18ff8bb2dcecb8ec2fe6e1125580c12a2402c3. Chain 2 (Bitcoin): anchored in block 956772 (2026-07-05T10:01:46Z), 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/ES71G2402572.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xd423639de337483a323928e0be2dcbaa797ab1b8f1b5568fc2e43e146332d6d7. Chain 2 (Bitcoin): anchored in block 958543 (2026-07-18T11:58:44Z), 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/ES71G2404804.