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 0xf8f38701ec1224443f8b7342d8532ffb9743c982deacd246c343ea6985ef49a0. 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/6ab9efa8-5b69-4e65-9bd4-3f8f531a0d5e.json and https://artists.proofprofile.net/proofs/artist/6ab9efa8-5b69-4e65-9bd4-3f8f531a0d5e.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 0xea55ebc78fc16eafc4745e4e718d9c5c523674b2074f643332b185b72cb59378. Chain 2 (Bitcoin): anchored in block 956772 (2026-07-05T10:01:46Z), 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/SEXNQ1700102.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xc5b864983f7913a3d0c86dc4ab84949ebfa82fbb6116072ae93848bbc6a3cfcd. Chain 2 (Bitcoin): anchored in block 958800 (2026-07-20T03:03:31Z), 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/SEXNQ1700103.
Suutoo Yé Diyaa (Good Night) - Instrumental
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x80dbc66cef2341dbee0f91d056f7921e0d8cf709b7b2835c5203aeb07e4db7d2. 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/SEXNQ1700111.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x4efb9afceb45e8c93f8d65a3b26579055b30fa48aa05e4515a7990ab4628d28e. 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/SEXNQ1700101.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xea55ebc78fc16eafc4745e4e718d9c5c523674b2074f643332b185b72cb59378. 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/SEXNQ1700102.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xc5b864983f7913a3d0c86dc4ab84949ebfa82fbb6116072ae93848bbc6a3cfcd. Chain 2 (Bitcoin): anchored in block 958373 (2026-07-17T06:09:33Z), 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/SEXNQ1700103.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x46fc3723a66278588e30b92053f69dc331d430958e7c5c971da128d02b0a03fe. 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/SEXNQ2100205.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xfb488641a9c10784fd0f902c84d3379608b92a2cc9e990638d9a265bce1ee68d. 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/SEXNQ2300110.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xa026c5f4b8885136728801c0a566c9365d0bbdbe3ee517435b589fbb2a449fee. Chain 2 (Bitcoin): anchored in block 959128 (2026-07-22T12:33:25Z), 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/SE5Q52001484.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xe07fbda2e58bf577961a69b9b3defa9ea7dbfa268f20cce0963a3126ed10f7bc. 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/SE5Q52001510.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xd25b9e44ea21c453fee30f90ae9c5029502a225352cce83f54478d3c2c42f0a3. 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/SE5Q52001491.