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 0x7f65ba85bef97178ed7bcd089ae53a3fbd98b84a863c1fb0472fdc4308309e17. Chain 2 (Bitcoin): anchored in block 953857 (2026-06-15T23:34:38Z). Bridge: the canonical record inside this Bitcoin proof contains the same CopyrightID. Verify: download https://artists.proofprofile.net/proofs/artist/02741f25-6771-415c-80bd-24a6d183b351.json and https://artists.proofprofile.net/proofs/artist/02741f25-6771-415c-80bd-24a6d183b351.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 0x72b6ef4665f085a07f2e316f3a7c0a48219b31e89eaa38c3647baf0de4d8aa01. Chain 2 (Bitcoin): anchored in block 956312 (2026-07-02T05:09:12Z), 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/DEH742009364.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x22f473e2d5db2ce27aa9da16fb1ab6989641fa3c07f616f8bd82557746226995. Chain 2 (Bitcoin): anchored in block 957120 (2026-07-08T03:22:41Z), 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/DEU672300142.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x654ae6cd6177bc070ec78ff292322219d808db1ece00568d59615562d09ea617. Chain 2 (Bitcoin): anchored in block 957124 (2026-07-08T03:53:27Z), 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/DEU672300143.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x6328aea8522f39340e9f43b3ca7ed3299a7054a9581f75b1a5c9c49ef6da898b. Chain 2 (Bitcoin): anchored in block 957124 (2026-07-08T03:53:27Z), 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/FR0ML2000340.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xb8ddb50e502929a86afd54d820da24a50184c6c910eb7c3e281d50c9f956c90d. Chain 2 (Bitcoin): anchored in block 957124 (2026-07-08T03:53:27Z), 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/FR0ML2000390.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xbddda6d9e6952b5b68dde3ffec3214d02fa4e67c3260e0a30d1678d85e6befb4. Chain 2 (Bitcoin): anchored in block 953520 (2026-06-13T13:32:09Z), 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/FR0ML2000410.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x7b74ec3fbf13aee3d34ee2e4fb8112ebeb3f87bc182bbfce9d2bf089c990c10b. Chain 2 (Bitcoin): anchored in block 956312 (2026-07-02T05:09:12Z), 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/NLCK41060818.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x1ed201d1df2e342703bf533a21ace0282024077b10759a2e03d9aa4cfd6bcfcc. Chain 2 (Bitcoin): anchored in block 957118 (2026-07-08T03:20:19Z), 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/NLCK41060819.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x089776b7cbf524b80955935f56d4b56efa7dff0516c43a6a8b46881bb98a56c2. Chain 2 (Bitcoin): anchored in block 957120 (2026-07-08T03:22:41Z), 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/FR0ML1700480.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x62df83f05b069f3cb45b8aeb840f40442cb1e809cde9ad33f6426a8de1b4d1c7. Chain 2 (Bitcoin): anchored in block 957145 (2026-07-08T08:56:20Z), 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/FR0ML1700500.
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