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 0xe237de71ac2d4a828dfa786aecb3b3c020825c20b8c8a554bbc3e9c772af78ed. Chain 2 (Bitcoin): anchored in block 953408 (2026-06-12T19:28:13Z). Bridge: the canonical record inside this Bitcoin proof contains the same CopyrightID. Verify: download https://artists.proofprofile.net/proofs/artist/21b57729-18d7-4ccd-a763-3a9c19ab90c3.json and https://artists.proofprofile.net/proofs/artist/21b57729-18d7-4ccd-a763-3a9c19ab90c3.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 0x0e496dcd6bd775b89231d1f972a7099b6c7a1df46d4ac260fce39c92f9f069d7. Chain 2 (Bitcoin): anchored in block 958362 (2026-07-17T04:32:48Z), 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/QZHN32242686.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xcd37ceb9a328e107b9a81535337f4c349f92e1d256c9eb3eef13208429558e79. Chain 2 (Bitcoin): anchored in block 956560 (2026-07-03T23:28:02Z), 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/QZHN32242605.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xe52571d73aaf8bc7aafeb6f773437f67650930ae9be99ec50a31a178ba1c3d13. Chain 2 (Bitcoin): anchored in block 958086 (2026-07-15T02:55:47Z), 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/QZHN32242606.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x391bc5d1fe6d0e5887256f16b2d51bb2899fe785b35df6f091d0dcbca7752952. Chain 2 (Bitcoin): anchored in block 956656 (2026-07-04T14:03:39Z), 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/QZHN32242608.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x9f68aa7d48a9278773fa1769b140dfb11597e5593bdad433f030f9e546a148b7. Chain 2 (Bitcoin): anchored in block 956476 (2026-07-03T09:04:44Z), 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/QZHN32242609.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x1ce7bfc3dfcfa371a783516d5caa5f5790ae8a02cca1d465d5115313e0da24b9. Chain 2 (Bitcoin): anchored in block 958544 (2026-07-18T12:14:37Z), 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/QZHN32242610.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xfb6faf982f0955804ac3a9dadfb491f8e39eed0e3cdfd56bd0532d6a2d2ff2b1. Chain 2 (Bitcoin): anchored in block 958341 (2026-07-17T02:14:30Z), 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/QZHN32242611.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xf4175226c4c6ebcabe88dd1a1a5a16958ef04f30070b24d12e9339d68580e9c9. Chain 2 (Bitcoin): anchored in block 958506 (2026-07-18T06:14:51Z), 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/QZHN32242612.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x1f3f6c24ab09214cccb8ce3eb0f56d0496db31946ba8b4dc1ec01fa93277a3cb. Chain 2 (Bitcoin): anchored in block 958176 (2026-07-15T19:06:28Z), 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/QZHN32242613.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x5950a9016ce0f67b70a093aa1b1753e62d3ef029afd5592e0cfc50ffada6ffa6. Chain 2 (Bitcoin): anchored in block 958234 (2026-07-16T03:46:09Z), 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/QZHN32240455.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x287aa7dedea30b03a154e005b52030db92b2c0cbfc163fc7b0c81bb93dba980d. Chain 2 (Bitcoin): anchored in block 957766 (2026-07-12T22:25:04Z), 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/QZHN32240464.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xcbae939838c24448f449cc95a3ffc95767266ace2b75d6d5f1d34103f04900b9. Chain 2 (Bitcoin): anchored in block 957852 (2026-07-13T11:25:45Z), 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/QZHN32240468.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x7a4fcd34ad4627d706c4939f3b4068e0f1fd774ac85ee3691f08c36ebd774aac. Chain 2 (Bitcoin): anchored in block 958316 (2026-07-16T19:42:29Z), 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/QZHN32242752.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xb643a0ccb57b605667f8549bb6cfba871fb13208fe236d57dfe1ac5a2321def0. 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/QZHN32242760.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xe3c087a76c35353d0503fe180835a844a4f3deec7d99939c3e59ca062a89ef42. 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/QZHN32242765.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x6515a4304aea07093a2b65af32e41375e08f97c55d2e3fb1c6f92e8f78be064d. Chain 2 (Bitcoin): anchored in block 956560 (2026-07-03T23:28:02Z), 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/QZHN32242767.
Yo Tambien (Un Billon de Veces) - En vivo
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xc7a79d1ab21119a253604ed289907d9265a8a6da0fbd115a2e7ca8d38b701455. 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/QZHN32394195.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x62017fb88efafa460f7ad43dbd52c7a051cceb91de7f73ad90ef6b70987fee56. Chain 2 (Bitcoin): anchored in block 958276 (2026-07-16T13:04:01Z), 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/QZHN32394198.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xa047c78094bccf6d50c41591e5cf4ac97c5d357989dd32b83c4aa009bbdf5010. Chain 2 (Bitcoin): anchored in block 956856 (2026-07-06T01:25:57Z), 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/QZHN32242573.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x0c9aabe4c1500ee680608d0b3165f67a8abd08895821fbf1d2e05804e5651a7b. Chain 2 (Bitcoin): anchored in block 956856 (2026-07-06T01:25:57Z), 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/QZHN32242576.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x2cfd69254a37c6c4b4473cd235038775b113002199b134d34a8a7794f162959d. Chain 2 (Bitcoin): anchored in block 958842 (2026-07-20T10:32:47Z), 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/QZHN32242579.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xdd2d5d3c073298efe578062f5aca1b45f8388bf86ef53d9854879694f4685eb5. Chain 2 (Bitcoin): anchored in block 958627 (2026-07-18T23:33:54Z), 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/QZHN32242581.