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 0x17c338d310392f90b6817917bbac8bbed6b2f625232edc5e29aea97b05a123d4. 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/146e428e-9ef1-46b2-b666-04762af0a174.json and https://artists.proofprofile.net/proofs/artist/146e428e-9ef1-46b2-b666-04762af0a174.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 0xd9d011a27709e497d9d941757f4fe04faffa182cf2e8c0a0b413235c6d74d3a7. Chain 2 (Bitcoin): anchored in block 958407 (2026-07-17T12:08:48Z), 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/PEOC11400016.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x9df5f29baa37ffa9224eb8ad30258683c72afead1a3e32727e03e61a4577e680. Chain 2 (Bitcoin): anchored in block 956375 (2026-07-02T16:51:38Z), 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/PEOC11710638.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x3585129aa4cf6b0779d39420c63e674039545476cc1a9ce6ce8e620469b28657. Chain 2 (Bitcoin): anchored in block 958561 (2026-07-18T14:22:01Z), 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/PEBQ91895770.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x313e072acf9e0d74015e8837dc85fce2e93a866ae68f3bf108e862a398409252. Chain 2 (Bitcoin): anchored in block 958695 (2026-07-19T07:37:00Z), 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/PEBQ91895774.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x0f3f6cf38ac96d451bccf5b6cd733dfcf5898e18a850963cdcaa45ceafdfb502. Chain 2 (Bitcoin): anchored in block 956545 (2026-07-03T19:59:51Z), 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/PEBQ91895781.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x7f48c27fcbcaf493771eb2f399789bc254346fdc2051779e4c0a0262d8be60ac. Chain 2 (Bitcoin): anchored in block 956474 (2026-07-03T08:56:35Z), 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/PEBQ91895834.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x41513f89c1b4d3e8f0003a22fbc15a4a574f74ae37103df3daf8bef00f021091. 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/PEBQ91895835.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x0aa6b0bb54d0368daa67c210927bf2311fa27c20f48a5e82a569d58fd3f50687. Chain 2 (Bitcoin): anchored in block 958415 (2026-07-17T12:50:13Z), 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/PEBQ91895837.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x0cf48bc48a51ff65e26143f8bf7727f7b3486596dc59fe63336b73ef9942da67. Chain 2 (Bitcoin): anchored in block 957872 (2026-07-13T15:39:45Z), 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/PEBQ91895832.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x4f002fee5d8b0838fea98a23dd71b4eee89f28f715b9e11d287bd0db02dfe907. Chain 2 (Bitcoin): anchored in block 956711 (2026-07-04T22:48:52Z), 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/PEBQ91895828.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x8b6055e308f0ca5f9c4131c3cf88434c0f2ccc134cc6421838000f3076a9eaed. Chain 2 (Bitcoin): anchored in block 958897 (2026-07-20T14:57:46Z), 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/PEBQ91895830.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x7c9010b61d52e759f67804e8e8b3f3d5885da564f61d7cfd85a6cc2096f1ecb5. Chain 2 (Bitcoin): anchored in block 958322 (2026-07-16T20:44:14Z), 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/PEBQ91895825.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xa7b991a943e8295d550195d046715784c86902c50d571ade529409fd82b1bd16. Chain 2 (Bitcoin): anchored in block 956375 (2026-07-02T16:51:38Z), 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/PEOC11901011.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xba63b8342897d0a11842720279c1d04fd0214810b90753ae50ddd5388f4f4ca8. Chain 2 (Bitcoin): anchored in block 958631 (2026-07-19T00:50:09Z), 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/QM6N22003045.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x81297d52383ef12ca06d23a4235bdb2109ff30919ef279e495ddbbd6d8657813. Chain 2 (Bitcoin): anchored in block 956545 (2026-07-03T19:59:51Z), 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/QM6P42104952.
Me Vas a Extrañar / Lejos de Ti / Sin Testigos - En Vivo
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xbe4a1a9ca52ae0b4a9e9ca21f8acc4eb5268dbe98f82df43ff3a1a39201cb44d. Chain 2 (Bitcoin): anchored in block 958185 (2026-07-15T18:19:04Z), 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/QMDA72194537.
Nunca Es Suficiente / No Te Vayas / Angustia / Sueña / Cuando Te Enamoras - En Vivo
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x3458ee529c2679ddfe110a5208be546025e952c4f1d0c5afa4918889d2d934ee. Chain 2 (Bitcoin): anchored in block 956742 (2026-07-05T05:07:15Z), 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/QMDA72194552.
No Me Mientas / Parranda Provinciano / Esta Noche - En Vivo
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x7984eb4380f6bc76d9975c2ce0b7fffe5aa88ec88ed26a0d52ea9d7bf71e3ae4. 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/QMDA72194555.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x612bee04ce22fe10ebcf1b40bd13a969bff299e1e4505e08ad5fecc6b276231d. Chain 2 (Bitcoin): anchored in block 959054 (2026-07-21T20:19:31Z), 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/QMDA72194557.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x88c30bf7cc3041d58c2c51b4a268c14ff0d1057b0fa5a26ee693de5a83e4dcc0. Chain 2 (Bitcoin): anchored in block 958987 (2026-07-21T09:04:56Z), 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/QM4TW2362898.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x2d9c550378a960dd43a00051b952674007e150b32839b7d7e00aa4c7976c7554. Chain 2 (Bitcoin): anchored in block 958991 (2026-07-21T10:04:40Z), 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/QZW9M2373730.
Mix Víctor Yaipén: Marioneta de tu Amor / Yo Conozco a Claudia / Con la Pata Pelá
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x513c428469de50e7888f214985709ee7af83f4ce319098d49ec853ec3da79624. Chain 2 (Bitcoin): anchored in block 956474 (2026-07-03T08:56:35Z), 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/QM4TX2508829.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x6086f2deccb6c6f09304443a5b15931e3784557c63fd4946e7bfdc9298df4fda. Chain 2 (Bitcoin): anchored in block 956545 (2026-07-03T19:59:51Z), 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/QMDA62566041.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x6397b1ec8fd5bec2ae904f01d5cb4f1a9cb85f45682a80b89b31e4febae66c05. Chain 2 (Bitcoin): anchored in block 960155 (2026-07-29T22:13:32Z), 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/QZW9N2205747.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xf828f0a985dbcbca19a08b6ea89e547d3328c9b7ae207415c66600111b015b70. 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/ES71G2028522.