1. Compute SHA-256 of OTSCanonicalRecord value → must equal OTSHash 2. Open OTSProofURL → extract Bitcoin block number → must equal OTSBitcoinBlock 3. GET OTSBitcoinBlockVerifyURL → block must exist at that height 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 0x6c0031eaef1954962d3d34486177d0cc337a8a5b7e0b4454b170e4bdef2ac632. Chain 2 (Bitcoin): anchored in block 953423 (2026-06-12T21:20:00Z). Bridge: the canonical record inside this Bitcoin proof contains the same CopyrightID. Verify: download https://artists.proofprofile.net/proofs/artist/245b45d8-4957-4dc0-b593-344b537b77ed.json and https://artists.proofprofile.net/proofs/artist/245b45d8-4957-4dc0-b593-344b537b77ed.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 → block OTSBitcoinBlock must exist at that height 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 0x567a1a01ac45fc415eca23c789ee319b63f0154a406535e376bdae49000506a5. 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/FR10S1402269.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xd07a9a310d2b4c87fa2da7e0a69a60a273fda5a8f40b364e5d17de822fe81299. Chain 2 (Bitcoin): anchored in block 956500 (2026-07-03T13:55:21Z), 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/FR6V82713573.
Desgarrada "As Mulheres" (Feat. Carlos Ribeiro)
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x7d398f49deca532059d4916692d1c58a8bd06a333577287ce64ff899d0c83c35. Chain 2 (Bitcoin): anchored in block 956420 (2026-07-03T00:42:11Z), 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/FR10S1402272.
Desgarrada "O Talho do Peixoto" (Feat. Marta Azevedo)
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x6b34918ec377640461800e5c1718229bd829a005f3ed3bbb9f29c7d1b50c8ed4. Chain 2 (Bitcoin): anchored in block 956576 (2026-07-04T02:06:47Z), 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/PTES11702501.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x42bb2cec6f94d7ebce3e6759300ba25f405c293d59fb6d5c709c40c0e8b56b1e. 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/PTES11705105.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x60f74c574eb87611bcd4f87d3d5ee34a2076fe387d60513a84c968c11a442df3. 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/PTES11705106.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xd2e51b0ee02796f7749988fccd7f29c4571c48973726c0b987ed6da3fcef7018. 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/PTES11905201.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x8dc2da71ecbfa0050a1f77b55e9691614fd448788acce9db7c6a6d250c175899. Chain 2 (Bitcoin): anchored in block 956822 (2026-07-05T18:48:28Z), 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/PTES12107501.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x20ae547cb1284769edee4d2694a6788d564766635c3b81f15b9bc7494e613262. Chain 2 (Bitcoin): anchored in block 956397 (2026-07-02T21:02:00Z), 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/PTES12303201.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x670647d9825f341776421bb26f118c6acdd3f457c19120d9b624b3e2c66c207a. Chain 2 (Bitcoin): anchored in block 956397 (2026-07-02T21:02:00Z), 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/PTES12407901.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xffc242e9a21ed7505eaa3070081dd1fce3e36adb853e99377b2ea7e696759ce9. Chain 2 (Bitcoin): anchored in block 958060 (2026-07-14T20:39:42Z), 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/PTES12407902.