thumb|Javiera Parra in 2019. Javiera Cereceda Orrego (born 19 May 1968), better known as Javiera Parra, is a Chilean musician and singer born in Santiago. She is the lead singer of rock band Javiera
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 0xaf277319280eadded4b0690fd7d8afa32a48b7b41fc4656bda34519095b90b03. 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/138bb43c-f9a7-42d7-8139-5e178615e2d7.json and https://artists.proofprofile.net/proofs/artist/138bb43c-f9a7-42d7-8139-5e178615e2d7.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 0xae134a48d8684c07bf02a1c52562ef9af551b9c73eaa49481cd352ed0ca68d1c. Chain 2 (Bitcoin): anchored in block 957888 (2026-07-13T17:43:59Z), 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/CLCC20400093.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x3a3e6a0f2dc9b5f668328a591788576af5d0ceb92ce243df2446d2c63c31a702. Chain 2 (Bitcoin): anchored in block 956776 (2026-07-05T10:59:37Z), 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/CLCC20400520.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xef8c2d5d7625fe220fbe7616759cb62826fab0d550ff09e6163ee3341ddc8262. 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/CLKT22103664.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xc40b48f410c3e28662007456310a2f1489fc6e4ea1f56a0ce6dd83ed73f58e21. Chain 2 (Bitcoin): anchored in block 956889 (2026-07-06T06:56:49Z), 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/CLCC20400098.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x5dc26e7288a253c3fc6b03770912e3f59560eb4860fa1c02c81f09a1c054fd10. 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/CLCC20400095.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x3c76030c337192f046ef99767dd57c3a70e6ef75455124ebb1f6001b272d970c. 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/CLPP20800154.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xcc3c56bb3061faad1a90d4086691ef2d51fcd2f49bcbd140f775b51c81e3b43e. 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/CLKT22404618.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xfd54c1de730a7b44b771dff553225d47c1f3a31f608fc13c1cf531e8d0959db4. 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/ES71G1308830.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x67449e8905b6c13226564edbe34fe9418c9cb0a34f0fb38247d43e482040f31a. Chain 2 (Bitcoin): anchored in block 953536 (2026-06-13T17:25:41Z), 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/CLKT21902098.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x41fa63a25c295628f8b316e9c3dacbaeb0f1f18ab3be8f95b9cade8f02fcbbb2. 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/CLCC20400515.
Run-Run Se Fue Pa'l Norte (Versión 1996)
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xfabc4bf4efbd8239b040748aec4b4fb2cb2637bcf36247e3c1d389636f755437. 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/ES71G2203812.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x4884dbcfa16cf7183f3623dfb2de5842213668bd95cbe119619a0b9f86215a86. Chain 2 (Bitcoin): anchored in block 953536 (2026-06-13T17:25:41Z), 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/ES71G2203816.
Inti-Illimani, Tributo A Su Música - A La Salud de la Música Chilena
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x2dfebae558629f11b7eab78a4bc600079cc4c3d09fc7cb78e273b183d74ca67f. 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/CLAB20902863.
Cantata Santa María de Iquique Vamos Mujer (En Vivo 50 Años)
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xfb48ae19ae7e0ef3980264365799b46a517d850e04870479fc3cad1bd4101382. Chain 2 (Bitcoin): anchored in block 957011 (2026-07-07T08:25:35Z), 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/ES71G2108001.
El Sol en Desierto Grande (En Vivo 50 Años)
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xd82c02f55623b1962d242a9fbad6d5e655eb28ef9a6cc59ffc9a05d7e1a7de1e. Chain 2 (Bitcoin): anchored in block 957075 (2026-07-07T18:50:38Z), 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/ES71G2107001.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xc6e047e08bd317bf8372937e63c7121bd90c466b3b49a072a8921c2eb7e3f4d0. Chain 2 (Bitcoin): anchored in block 953528 (2026-06-13T15:41:10Z), 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/ES71G2107004.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xb919973599f80377f2c16993d67fbfcca558dca0b131b7487f4846d04e54ed22. 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/ES71G2107006.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xa0daf7a9d1fd7a9f07036a99059722b4739e67c2bc1a9a7e626c75e3ab7e9db2. Chain 2 (Bitcoin): anchored in block 959163 (2026-07-22T20:49:54Z), 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/CLEP21400062.
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 0x14e4afe3f6f21865a51dbd328bf94a5381883abf2c2532086a7e2a40c83a60d8. Chain 2 (Bitcoin): anchored in block 960105 (2026-07-29T12:35:17Z), 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/CLCC20400099.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x218bd445d1d7f5d271aad1eb132b8e67311e04393645fd7880dff4261073a0c9. Chain 2 (Bitcoin): anchored in block 960209 (2026-07-30T05:15:54Z), 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/QM7281518138.