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 0xde13c22a303efbcd1fd302db33feefef8b06dde4b2b14aa8616e3f390da48685. Chain 2 (Bitcoin): anchored in block 953699 (2026-06-14T22:00:24Z). Bridge: the canonical record inside this Bitcoin proof contains the same CopyrightID. Verify: download https://artists.proofprofile.net/proofs/artist/65fbe315-170a-45b8-a6cd-b3b4a1bae5ee.json and https://artists.proofprofile.net/proofs/artist/65fbe315-170a-45b8-a6cd-b3b4a1bae5ee.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 0x487f5396bee23c32e70f552357adfbcfe6046fa9da91f61893a970425b422320. Chain 2 (Bitcoin): anchored in block 958384 (2026-07-17T08:27:02Z), 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/QZ5AB2453391.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x362b4cef357bf7376894c97926a2c7e2663c3f0db719a3155090d1abd802aa6f. 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/QZ5AB2453392.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x3eb311876472f884958bfa62841a6b747d2ae28f191797a02f4b597f26521606. Chain 2 (Bitcoin): anchored in block 958340 (2026-07-17T00:53:26Z), 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/QZ5AB2453393.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x276e8eb63326ab2558b487bd21e914c76d16aa2bf80dcf815d1485400223190f. 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/QZ5AB2453394.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x117c19f14caf65e3da6da59ef923ed45a24474c28027b98ab28e1a86f03592af. 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/QZ5AB2453395.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x80ebedd28e4dd5a52497afeba04c9bc4e02abcf41e9b4862bc23a013411a1b58. Chain 2 (Bitcoin): anchored in block 956738 (2026-07-05T04:47:21Z), 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/QZ5AB2453396.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x292b958dd3579dc2c6de9fbd67943fa597d27d9151d66c75a154e2d7706513b2. 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/QZ5AB2453397.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x83a2ebe38bede43155b41a44d6bc6128dc21382d91a04c58eb103a1136c7dfb2. 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/QZ5AB2453398.
Warma Anillo / Morohuasa Gallo / Oyso Oyso Pato
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x9d94319ab298cb58f908481c5e5dd5a8bdac723d4b3407b8d495c7c4bcfd0e5e. Chain 2 (Bitcoin): anchored in block 958256 (2026-07-16T07:22:18Z), 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/QZNJV2408944.
Las Estrellas / Santo del Compadre / Si Si Bailando
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x2d00822815790b7d4f265f92495348565bbe02299b6e206d2ca66a476df2dd19. Chain 2 (Bitcoin): anchored in block 957776 (2026-07-13T00:05:10Z), 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/QZNJV2408945.
Chiqui Simi Huaychau / Tusucuy Paisanita
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xb0025bd93a669e983bd259e6776dc46cb4af88800586aac24c44df11548933d7. 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/QZNJV2408946.
Vicuñita / Saracha Tumbischa / Manzana Durazno
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xf0a68a6d0d388f9de054726d2cf75b3b4fa60d15b639ddd36f38a541f91a9371. Chain 2 (Bitcoin): anchored in block 958245 (2026-07-16T08:38:12Z), 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/QZNJV2408947.
Rio Sondondo / Retrato Carta / Hualma Hualas
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x35d0e88cf98e4b9a552cf0e02a0af14a94801605b6fac16b9e5403f48a709446. Chain 2 (Bitcoin): anchored in block 958095 (2026-07-15T04:30:08Z), 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/QZNJV2408948.
Llorare por Tu Amor / Sigo Tomando / Accay Asiruconi
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xff14769d6847ff3e933cc811ae65f243c3651c3f2ae170c7b428f562fafde85d. Chain 2 (Bitcoin): anchored in block 957779 (2026-07-13T00:19:08Z), 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/QZNJV2408949.