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 0xeef5da67f29ea587abb3b5a8f5e1f01ed577433b451e7d61254b17797cbaa54a. 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/dda95dd3-1b7c-4962-b227-06f93cc61fd9.json and https://artists.proofprofile.net/proofs/artist/dda95dd3-1b7c-4962-b227-06f93cc61fd9.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 0xb381643f46de02d485c275e0bbe0ccccd86665cf521a1fed17782d762116045d. Chain 2 (Bitcoin): anchored in block 956551 (2026-07-03T21:18:05Z), 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/PECR22301658.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x486cb024f19ef2de0d45e269c8c9484ecd969581eab898e7c03b3444f92cc12f. 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/PECR22301659.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x5377983dbdefdd8d44592ba7daf151e1da91881df05e730c887a2ea7e18e73a7. Chain 2 (Bitcoin): anchored in block 958761 (2026-07-19T17:49:48Z), 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/PECR22301660.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x9619815f59c85ecdca2eb53f8e4f6efb56e5478486836a51c5da8b8391db2d92. Chain 2 (Bitcoin): anchored in block 957771 (2026-07-12T23:27:28Z), 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/PECR22301661.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x417d34630b58bdf8bb76f8b25aea917d057ccd49daa19bf1424963aa3f905ad9. Chain 2 (Bitcoin): anchored in block 958104 (2026-07-15T05:34:05Z), 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/PECR22301651.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x17543f939cabecb5d2cff57e2a3dd06616ea03d4667f09eb7115a97f81f0cf71. 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/PECR22301652.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x2f9b9f077551b435479afa82c245a114f9ad168794b53a05d31be9dfbd5145d4. Chain 2 (Bitcoin): anchored in block 958346 (2026-07-17T01:47:42Z), 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/PECR22301649.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x3fd6cf1ef67c0304cffceb5209d9c573eb429ef1bcb40b5df9bf56ad10250b85. Chain 2 (Bitcoin): anchored in block 958300 (2026-07-16T16:14:30Z), 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/PECR22301802.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x20563ecdd98aef970ae094fd82237b145ef37e904b22d9ddfc6cfa98ca41e955. Chain 2 (Bitcoin): anchored in block 958157 (2026-07-15T13:14:32Z), 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/PECR22301805.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xfc61dd3f16b6914871db5c2a2fa1beff5a152688bce136f5b071fc8dcd2cf05e. 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/PECR22301806.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x6d2268685906607d9508db85f28b927e56b8d9853d236513dd70a1d4cdc4469c. Chain 2 (Bitcoin): anchored in block 958377 (2026-07-17T06:48:00Z), 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/PECR22301830.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xbb999acd4f39c32743a264cebacd17551ede8cb306b7c0a73bf24f583b24eb79. Chain 2 (Bitcoin): anchored in block 957770 (2026-07-12T23:17:00Z), 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/PECR22301829.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xd6be94bae7464fc6d54cf5b1c89075c4fad7a70961f4741a3959ce7374eb7fc8. 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/PECR22401240.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x5f8a0f64a08dbfe26467a5e23d67f8281e0b8afa9799bb61189d5c6dec6b263d. Chain 2 (Bitcoin): anchored in block 958520 (2026-07-18T08:19:09Z), 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/PECR22401241.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x7d55747d1eb8862cfe287fb786cb971324acd18a15b5abdd182869c74d27b28d. 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/PECR22401243.
Quien Te Dijo Eso (Concierto En Vivo Tacna)
Pasajero Soy En Esta Vida (Concierto En Vivo Arequipa)
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x7e971cd54449ee737fa890b5d873eec48b79dbfed7f097be84edf5cf31c951dd. Chain 2 (Bitcoin): anchored in block 957778 (2026-07-13T00:08:48Z), 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/PECR22402224.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x7ea2e147678c5aab867bf4f393c88995069b475fdbde104dffe168ae455aa949. 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/PECR22402421.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x27cda032c4a27b003616f6d594046deefddedf7f0c22613b5ed3d9f39d8b8b0c. 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/PECR22502160.